TY  - JOUR
AU  - Milovanović, Dubravka
AU  - Rajčić, Boris
AU  - Ranković, Dragan
AU  - Stankov, Biljana
AU  - Čekada, Miha
AU  - Ciganović, Jovan
AU  - Đurđević-Milošević, Dragica
AU  - Stević, Zoran
AU  - Kuzmanović, Miroslav
AU  - Šibalija, Tatjana
AU  - Petronić, Sanja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12723
AB  - This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.
T2  - Micromachines
T1  - Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process
VL  - 15
IS  - 1
SP  - 5
DO  - 10.3390/mi15010005
ER  - 

@article{
author = "Milovanović, Dubravka and Rajčić, Boris and Ranković, Dragan and Stankov, Biljana and Čekada, Miha and Ciganović, Jovan and Đurđević-Milošević, Dragica and Stević, Zoran and Kuzmanović, Miroslav and Šibalija, Tatjana and Petronić, Sanja",
year = "2024",
abstract = "This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.",
journal = "Micromachines",
title = "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process",
volume = "15",
number = "1",
pages = "5",
doi = "10.3390/mi15010005"
}

Milovanović, D., Rajčić, B., Ranković, D., Stankov, B., Čekada, M., Ciganović, J., Đurđević-Milošević, D., Stević, Z., Kuzmanović, M., Šibalija, T.,& Petronić, S.. (2024). Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines, 15(1), 5.
https://doi.org/10.3390/mi15010005

Milovanović D, Rajčić B, Ranković D, Stankov B, Čekada M, Ciganović J, Đurđević-Milošević D, Stević Z, Kuzmanović M, Šibalija T, Petronić S. Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines. 2024;15(1):5.
doi:10.3390/mi15010005 .

Milovanović, Dubravka, Rajčić, Boris, Ranković, Dragan, Stankov, Biljana, Čekada, Miha, Ciganović, Jovan, Đurđević-Milošević, Dragica, Stević, Zoran, Kuzmanović, Miroslav, Šibalija, Tatjana, Petronić, Sanja, "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process" in Micromachines, 15, no. 1 (2024):5,
https://doi.org/10.3390/mi15010005 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Petrović, Jelena
AU  - Nemoda, Milica
AU  - Ciganović, Jovan
AU  - Krstulović, Nikša
AU  - Ognjanović, Miloš
AU  - Živković, Sanja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10859
AB  - Pulsed laser ablation in liquids (PLAL) is an approach for the direct synthesis of nanoparticles from the bulk material. In the present work, silver and gold nanoparticles (NPs) were synthesized using the PLAL technique, and obtained water colloid suspensions were characterized by TEM–EDX, ICP-OES, UV–VIS, and DLS methods. On the other hand, Laser-Induced Breakdown Spectroscopy (LIBS) is a well-recognized and versatile analytical technique for the element analysis of solid samples. However, obtaining improved spectral intensity and detection sensitivity are still great challenging tasks, especially for an alternative and cost-effective LIBS setup based on TEA CO2 laser. Considering these demands, this work aimed to investigate a promising approach to signal enhancement based on the deposition of noble NPs on the plastic sample. The effect of NPS on the enhancement of the LIBS signal has been investigated. LIBS experiments were carried out in air at atmospheric pressure and obtained spectra with a high signal-to-background (SBR) ratio. This study shows that signal enhancement can be achieved followed by the lower limits of detection by increasing the ablation amount rate.
T2  - Applied Physics. B: Lasers and Optics
T1  - Laser ablation in water for silver and gold nanoparticle synthesis and their application for improvement of TEA CO2 LIBS setup performance
VL  - 129
IS  - 4
SP  - 62
DO  - 10.1007/s00340-023-08007-w
ER  - 

@article{
author = "Momčilović, Miloš and Petrović, Jelena and Nemoda, Milica and Ciganović, Jovan and Krstulović, Nikša and Ognjanović, Miloš and Živković, Sanja",
year = "2023",
abstract = "Pulsed laser ablation in liquids (PLAL) is an approach for the direct synthesis of nanoparticles from the bulk material. In the present work, silver and gold nanoparticles (NPs) were synthesized using the PLAL technique, and obtained water colloid suspensions were characterized by TEM–EDX, ICP-OES, UV–VIS, and DLS methods. On the other hand, Laser-Induced Breakdown Spectroscopy (LIBS) is a well-recognized and versatile analytical technique for the element analysis of solid samples. However, obtaining improved spectral intensity and detection sensitivity are still great challenging tasks, especially for an alternative and cost-effective LIBS setup based on TEA CO2 laser. Considering these demands, this work aimed to investigate a promising approach to signal enhancement based on the deposition of noble NPs on the plastic sample. The effect of NPS on the enhancement of the LIBS signal has been investigated. LIBS experiments were carried out in air at atmospheric pressure and obtained spectra with a high signal-to-background (SBR) ratio. This study shows that signal enhancement can be achieved followed by the lower limits of detection by increasing the ablation amount rate.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Laser ablation in water for silver and gold nanoparticle synthesis and their application for improvement of TEA CO2 LIBS setup performance",
volume = "129",
number = "4",
pages = "62",
doi = "10.1007/s00340-023-08007-w"
}

Momčilović, M., Petrović, J., Nemoda, M., Ciganović, J., Krstulović, N., Ognjanović, M.,& Živković, S.. (2023). Laser ablation in water for silver and gold nanoparticle synthesis and their application for improvement of TEA CO2 LIBS setup performance. in Applied Physics. B: Lasers and Optics, 129(4), 62.
https://doi.org/10.1007/s00340-023-08007-w

Momčilović M, Petrović J, Nemoda M, Ciganović J, Krstulović N, Ognjanović M, Živković S. Laser ablation in water for silver and gold nanoparticle synthesis and their application for improvement of TEA CO2 LIBS setup performance. in Applied Physics. B: Lasers and Optics. 2023;129(4):62.
doi:10.1007/s00340-023-08007-w .

Momčilović, Miloš, Petrović, Jelena, Nemoda, Milica, Ciganović, Jovan, Krstulović, Nikša, Ognjanović, Miloš, Živković, Sanja, "Laser ablation in water for silver and gold nanoparticle synthesis and their application for improvement of TEA CO2 LIBS setup performance" in Applied Physics. B: Lasers and Optics, 129, no. 4 (2023):62,
https://doi.org/10.1007/s00340-023-08007-w . .

TY  - JOUR
AU  - Petrović, Jelena
AU  - Marinković, Jelena
AU  - Živković, Sanja
AU  - Radenković, Marina
AU  - Ciganović, Jovan
AU  - Marković, Dejan
AU  - Momčilović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11369
AB  - The purpose of this study is to evaluate the feasibility of using the originally developed Laser Induced Breakdown Spectroscopy (LIBS) laboratory setup for the qualitative analysis of human tooth tissues and tooth restorations. Plasma was induced by the infrared TEA (Transversally Excited Atmospheric) CO2 laser in the air under atmospheric pressure. Optical emission spectra with sharp and well-resolved spectral lines and a negligibly low background were obtained. The results of the qualitative analysis showed the presence of various elements in the tooth tissues (P, Ca, and Mg), as well as trace elements within restorations such as Zn, Sn, Cu, Ag, and Hg. The estimated temperatures of plasma for composite, dentin, and amalgam were 21,000 K, 16,200 K, and 13,300 K respectively. The electron density deduced from the Stark-broadening line profiles varies from 8.5 × 1017 cm− 3 for amalgam, 2 × 1018 cm− 3 for composite, and 1.9 × 1018 cm− 3 for dentin. The surface of the tooth tissue was imaged with a scanning electron microscope (SEM), showing that dentin contains pores, cavities and bubbles. The results indicated that the alternative and cost-effective LIBS system can be used as a useful tool for further research on laser-induced plasma in dentistry. These insights are useful in the field of laser dentistry, where lasers are commonly utilized to treat teeth. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - The TEA CO2 Laser as a Promising tool for Elemental Analysis of Restored Teeth and Evaluation of Restoration Constituent Penetration into Dental Tissues
DO  - 10.1007/s11090-023-10348-5
ER  - 

@article{
author = "Petrović, Jelena and Marinković, Jelena and Živković, Sanja and Radenković, Marina and Ciganović, Jovan and Marković, Dejan and Momčilović, Miloš",
year = "2023",
abstract = "The purpose of this study is to evaluate the feasibility of using the originally developed Laser Induced Breakdown Spectroscopy (LIBS) laboratory setup for the qualitative analysis of human tooth tissues and tooth restorations. Plasma was induced by the infrared TEA (Transversally Excited Atmospheric) CO2 laser in the air under atmospheric pressure. Optical emission spectra with sharp and well-resolved spectral lines and a negligibly low background were obtained. The results of the qualitative analysis showed the presence of various elements in the tooth tissues (P, Ca, and Mg), as well as trace elements within restorations such as Zn, Sn, Cu, Ag, and Hg. The estimated temperatures of plasma for composite, dentin, and amalgam were 21,000 K, 16,200 K, and 13,300 K respectively. The electron density deduced from the Stark-broadening line profiles varies from 8.5 × 1017 cm− 3 for amalgam, 2 × 1018 cm− 3 for composite, and 1.9 × 1018 cm− 3 for dentin. The surface of the tooth tissue was imaged with a scanning electron microscope (SEM), showing that dentin contains pores, cavities and bubbles. The results indicated that the alternative and cost-effective LIBS system can be used as a useful tool for further research on laser-induced plasma in dentistry. These insights are useful in the field of laser dentistry, where lasers are commonly utilized to treat teeth. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "The TEA CO2 Laser as a Promising tool for Elemental Analysis of Restored Teeth and Evaluation of Restoration Constituent Penetration into Dental Tissues",
doi = "10.1007/s11090-023-10348-5"
}

Petrović, J., Marinković, J., Živković, S., Radenković, M., Ciganović, J., Marković, D.,& Momčilović, M.. (2023). The TEA CO2 Laser as a Promising tool for Elemental Analysis of Restored Teeth and Evaluation of Restoration Constituent Penetration into Dental Tissues. in Plasma Chemistry and Plasma Processing.
https://doi.org/10.1007/s11090-023-10348-5

Petrović J, Marinković J, Živković S, Radenković M, Ciganović J, Marković D, Momčilović M. The TEA CO2 Laser as a Promising tool for Elemental Analysis of Restored Teeth and Evaluation of Restoration Constituent Penetration into Dental Tissues. in Plasma Chemistry and Plasma Processing. 2023;.
doi:10.1007/s11090-023-10348-5 .

Petrović, Jelena, Marinković, Jelena, Živković, Sanja, Radenković, Marina, Ciganović, Jovan, Marković, Dejan, Momčilović, Miloš, "The TEA CO2 Laser as a Promising tool for Elemental Analysis of Restored Teeth and Evaluation of Restoration Constituent Penetration into Dental Tissues" in Plasma Chemistry and Plasma Processing (2023),
https://doi.org/10.1007/s11090-023-10348-5 . .

TY  - CONF
AU  - Petrović, Jelena D.
AU  - Marinković, Jelena
AU  - Radenković, Marina
AU  - Živković, Sanja
AU  - Ciganović, Jovan
AU  - Momčilović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12438
AB  - У овом раду се испитује примена спектроскопије ласерски индуковане плазме (LIBS) за анализу елементног састава зуба и пломбе. Коришћењем CO2 ласера као извора побуђивања, добијени су емисиони спектри са оштрим спектралним линијама и ниском позадином који су омогућили идентификацију елементног састава ткива зуба и пломбе. Испитивани су и параметри плазме, температура и густина електрона, што је важно за разумевање процеса током LIBS анализе. Добијени резултати показују да LIBS техника са CO2 ласером може пружити корисне информације о елементном саставу зуба и пломбе, што је значајно за стоматологију, археологију и форензику [1].
AB  - This study investigates the application of laser-induced breakdown spectroscopy (LIBS) for analyzing the elemental composition of teeth and dental fillings. Using a CO2 laser as the excitation source, emission spectra with sharp spectral lines and low background were obtained, allowing for the identification of the elemental composition of tooth and filling tissue. Plasma parameters, including electron temperature and density, were also examined, which is important for understanding the process during LIBS analysis. The results show that the LIBS technique with a CO2 laser can provide useful information on the elemental composition of teeth and fillings, which is significant for dentistry, archaeology, and forensics [1].
PB  - Belgrade : Serbian Chemical Society
C3  - 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
T1  - Елементна анализа и дијагностика плазме хуманих зуба применом LIBS-a
T1  - Elemental analysis and plasma diagnostics of human teeth using LIBS
SP  - 118
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12438
ER  - 

@conference{
author = "Petrović, Jelena D. and Marinković, Jelena and Radenković, Marina and Živković, Sanja and Ciganović, Jovan and Momčilović, Miloš",
year = "2023",
abstract = "У овом раду се испитује примена спектроскопије ласерски индуковане плазме (LIBS) за анализу елементног састава зуба и пломбе. Коришћењем CO2 ласера као извора побуђивања, добијени су емисиони спектри са оштрим спектралним линијама и ниском позадином који су омогућили идентификацију елементног састава ткива зуба и пломбе. Испитивани су и параметри плазме, температура и густина електрона, што је важно за разумевање процеса током LIBS анализе. Добијени резултати показују да LIBS техника са CO2 ласером може пружити корисне информације о елементном саставу зуба и пломбе, што је значајно за стоматологију, археологију и форензику [1]., This study investigates the application of laser-induced breakdown spectroscopy (LIBS) for analyzing the elemental composition of teeth and dental fillings. Using a CO2 laser as the excitation source, emission spectra with sharp spectral lines and low background were obtained, allowing for the identification of the elemental composition of tooth and filling tissue. Plasma parameters, including electron temperature and density, were also examined, which is important for understanding the process during LIBS analysis. The results show that the LIBS technique with a CO2 laser can provide useful information on the elemental composition of teeth and fillings, which is significant for dentistry, archaeology, and forensics [1].",
publisher = "Belgrade : Serbian Chemical Society",
journal = "59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings",
title = "Елементна анализа и дијагностика плазме хуманих зуба применом LIBS-a, Elemental analysis and plasma diagnostics of human teeth using LIBS",
pages = "118-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12438"
}

Petrović, J. D., Marinković, J., Radenković, M., Živković, S., Ciganović, J.,& Momčilović, M.. (2023). Елементна анализа и дијагностика плазме хуманих зуба применом LIBS-a. in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
Belgrade : Serbian Chemical Society., 118-118.
https://hdl.handle.net/21.15107/rcub_vinar_12438

Petrović JD, Marinković J, Radenković M, Živković S, Ciganović J, Momčilović M. Елементна анализа и дијагностика плазме хуманих зуба применом LIBS-a. in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings. 2023;:118-118.
https://hdl.handle.net/21.15107/rcub_vinar_12438 .

Petrović, Jelena D., Marinković, Jelena, Radenković, Marina, Živković, Sanja, Ciganović, Jovan, Momčilović, Miloš, "Елементна анализа и дијагностика плазме хуманих зуба применом LIBS-a" in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings (2023):118-118,
https://hdl.handle.net/21.15107/rcub_vinar_12438 .

TY  - CONF
AU  - Cvijović-Alagić, Ivana
AU  - Laketić, Slađana
AU  - Momčilović, M.
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe
AU  - Bajat, Jelena
AU  - Kojić, Vesna
AU  - Rakin, Marko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11343
AB  - Modern hard tissue replacements, used in orthopedic and dental surgery, are most commonly produced using commercially pure titanium (CP-Ti) and the (α+β) Ti-based alloys since their biomechanical compatibility is superior in comparison to other metallic biomaterials. However, these materials are still unable to meet all implantation requirements primarily due to their somewhat limited resistance to degradation in harsh bio-environment and/or presence of cytotoxic elements in their composition that can cause adverse health effects. Therefore, the potential biomedical application of the β-type Ti alloys, which contain non-toxic elements, is considered since these alloys can exhibit lower elastic modulus and improved biocompatibility compared with other Ti-based materials. The β-type Ti-45Nb (wt%) alloy shows significant potential for application as hard tissue implant material. Nevertheless, an additional improvement of its response in the bio-environment is necessary to maximize its medical applicability. Modification of the alloy’s microstructural and surface characteristics through the careful selection of the appropriate processing parameters can ensure the obtainment of favorable alloy biocompatible properties. High-pressure torsion (HPT), as a processing method for the obtainment of ultra-fine grained (UFG) microstructure with higher compatibility with biological systems, and laser surface scanning, as an easy-to-apply surface modification technique for the obtainment of developed bio-active surface, are singled-out as potential methods for the attainment of more durable orthopedic and dental implants. Having all this in mind, the present research aimed to attain improved corrosive and biocompatible response of the Ti-45Nb alloy in simulated physiological conditions through the alloy grain refinement and the formation of protective surface scales by the alloy combined HPT and laser irradiation processing. For that purpose, the alloy microstructural, electrochemical, and in vitro testing were conducted before and after its additional processing. Attained results indicated that the achieved grain size reduction from 2.76 µm to ~200 nm during HPT processing and the appearance of laser-induced morphologically altered and highly oxidized surface led to the significant improvement of the alloy corrosion resistance and the cellsimplant interaction. Moreover, an additional increase of the laser pulse energy from 5 mJ to 15 mJ during the alloy irradiation in air led to an increase in oxygen content at the alloy surface from 13.64% to 23.89% accompanied by an increase of cell viability from excellent 127.18% to superior 134.42%. Furthermore, as a result of the controlled alloy microstructural and surface morphological and chemical modifications, the formation of a thick, compact and protective bi-modal external scale, composed of mixed Ti- and Nboxides, was enabled in the simulated body conditions. Presence of this surface oxide scale, which consists of inner barrier and outer porous layer, enhanced the alloy’s resistance to corrosion deterioration and simultaneously boosted the cell viability and proliferation. Results of the present study showed that the additional HPT and laser surface processing can be successfully utilized to improve the biometallic’s response to a bio-environment
PB  - Slovak Republic : Institute of Inorganic Chemistry, SAS
C3  - EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics
T1  - Laser-modified Ti-45Nb alloy’s response to bio-environment
SP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11343
ER  - 

@conference{
author = "Cvijović-Alagić, Ivana and Laketić, Slađana and Momčilović, M. and Ciganović, Jovan and Veljović, Đorđe and Bajat, Jelena and Kojić, Vesna and Rakin, Marko",
year = "2023",
abstract = "Modern hard tissue replacements, used in orthopedic and dental surgery, are most commonly produced using commercially pure titanium (CP-Ti) and the (α+β) Ti-based alloys since their biomechanical compatibility is superior in comparison to other metallic biomaterials. However, these materials are still unable to meet all implantation requirements primarily due to their somewhat limited resistance to degradation in harsh bio-environment and/or presence of cytotoxic elements in their composition that can cause adverse health effects. Therefore, the potential biomedical application of the β-type Ti alloys, which contain non-toxic elements, is considered since these alloys can exhibit lower elastic modulus and improved biocompatibility compared with other Ti-based materials. The β-type Ti-45Nb (wt%) alloy shows significant potential for application as hard tissue implant material. Nevertheless, an additional improvement of its response in the bio-environment is necessary to maximize its medical applicability. Modification of the alloy’s microstructural and surface characteristics through the careful selection of the appropriate processing parameters can ensure the obtainment of favorable alloy biocompatible properties. High-pressure torsion (HPT), as a processing method for the obtainment of ultra-fine grained (UFG) microstructure with higher compatibility with biological systems, and laser surface scanning, as an easy-to-apply surface modification technique for the obtainment of developed bio-active surface, are singled-out as potential methods for the attainment of more durable orthopedic and dental implants. Having all this in mind, the present research aimed to attain improved corrosive and biocompatible response of the Ti-45Nb alloy in simulated physiological conditions through the alloy grain refinement and the formation of protective surface scales by the alloy combined HPT and laser irradiation processing. For that purpose, the alloy microstructural, electrochemical, and in vitro testing were conducted before and after its additional processing. Attained results indicated that the achieved grain size reduction from 2.76 µm to ~200 nm during HPT processing and the appearance of laser-induced morphologically altered and highly oxidized surface led to the significant improvement of the alloy corrosion resistance and the cellsimplant interaction. Moreover, an additional increase of the laser pulse energy from 5 mJ to 15 mJ during the alloy irradiation in air led to an increase in oxygen content at the alloy surface from 13.64% to 23.89% accompanied by an increase of cell viability from excellent 127.18% to superior 134.42%. Furthermore, as a result of the controlled alloy microstructural and surface morphological and chemical modifications, the formation of a thick, compact and protective bi-modal external scale, composed of mixed Ti- and Nboxides, was enabled in the simulated body conditions. Presence of this surface oxide scale, which consists of inner barrier and outer porous layer, enhanced the alloy’s resistance to corrosion deterioration and simultaneously boosted the cell viability and proliferation. Results of the present study showed that the additional HPT and laser surface processing can be successfully utilized to improve the biometallic’s response to a bio-environment",
publisher = "Slovak Republic : Institute of Inorganic Chemistry, SAS",
journal = "EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics",
title = "Laser-modified Ti-45Nb alloy’s response to bio-environment",
pages = "12",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11343"
}

Cvijović-Alagić, I., Laketić, S., Momčilović, M., Ciganović, J., Veljović, Đ., Bajat, J., Kojić, V.,& Rakin, M.. (2023). Laser-modified Ti-45Nb alloy’s response to bio-environment. in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics
Slovak Republic : Institute of Inorganic Chemistry, SAS., 12.
https://hdl.handle.net/21.15107/rcub_vinar_11343

Cvijović-Alagić I, Laketić S, Momčilović M, Ciganović J, Veljović Đ, Bajat J, Kojić V, Rakin M. Laser-modified Ti-45Nb alloy’s response to bio-environment. in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics. 2023;:12.
https://hdl.handle.net/21.15107/rcub_vinar_11343 .

Cvijović-Alagić, Ivana, Laketić, Slađana, Momčilović, M., Ciganović, Jovan, Veljović, Đorđe, Bajat, Jelena, Kojić, Vesna, Rakin, Marko, "Laser-modified Ti-45Nb alloy’s response to bio-environment" in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics (2023):12,
https://hdl.handle.net/21.15107/rcub_vinar_11343 .

TY  - JOUR
AU  - Zlatić, Gloria
AU  - Martinović, Ivana
AU  - Pilić, Zora
AU  - Kodranov, Igor
AU  - Ciganović, Jovan
AU  - Sokol, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10921
AB  - The protective effect of A. annua against microbiologically influenced corrosion (MIC) of A36 steel caused by P. aeruginosa (PA) in a simulated marine environment was investigated using electrochemical, spectroscopic, and surface techniques. PA was found to accelerate the local dissolution of A36 which led to the formation of a porous α-FeOOH and γ-FeOOH surface layer. 2D and 3D profiles of treated coupons, obtained by optical profilometer, revealed the formation of crevices in the presence of PA. On the contrary, adding A. annua to the biotic medium led to the formation of a thinner, more uniform surface without significant damage. Electrochemical data showed that the addition of A. annua prevented the MIC of A36 steel with an inhibition efficiency of 60%. The protective effect was attributed to the formation of a more compact Fe3O4 surface layer, as well as the adsorption of phenolics, such as caffeic acid and its derivatives on the A36 steel surfaces, as detected by FTIR and SEM-EDS analysis. ICP-OES confirmed that Fe and Cr species more readily diffuse from A36 steel surfaces incubated in biotic media (Fe; 1516.35 ± 7.94 μg L-1 cm−2, Cr; 11.77 ± 0.40 μg L-1 cm−2) compared to the inhibited media (Fe; 35.01 ± 0.28 μg L-1 cm−2, Cr; 1.58 ± 0.01 μg L-1 cm−2).
T2  - Bioelectrochemistry
T1  - The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa
VL  - 152
SP  - 108447
DO  - 10.1016/j.bioelechem.2023.108447
ER  - 

@article{
author = "Zlatić, Gloria and Martinović, Ivana and Pilić, Zora and Kodranov, Igor and Ciganović, Jovan and Sokol, Vesna",
year = "2023",
abstract = "The protective effect of A. annua against microbiologically influenced corrosion (MIC) of A36 steel caused by P. aeruginosa (PA) in a simulated marine environment was investigated using electrochemical, spectroscopic, and surface techniques. PA was found to accelerate the local dissolution of A36 which led to the formation of a porous α-FeOOH and γ-FeOOH surface layer. 2D and 3D profiles of treated coupons, obtained by optical profilometer, revealed the formation of crevices in the presence of PA. On the contrary, adding A. annua to the biotic medium led to the formation of a thinner, more uniform surface without significant damage. Electrochemical data showed that the addition of A. annua prevented the MIC of A36 steel with an inhibition efficiency of 60%. The protective effect was attributed to the formation of a more compact Fe3O4 surface layer, as well as the adsorption of phenolics, such as caffeic acid and its derivatives on the A36 steel surfaces, as detected by FTIR and SEM-EDS analysis. ICP-OES confirmed that Fe and Cr species more readily diffuse from A36 steel surfaces incubated in biotic media (Fe; 1516.35 ± 7.94 μg L-1 cm−2, Cr; 11.77 ± 0.40 μg L-1 cm−2) compared to the inhibited media (Fe; 35.01 ± 0.28 μg L-1 cm−2, Cr; 1.58 ± 0.01 μg L-1 cm−2).",
journal = "Bioelectrochemistry",
title = "The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa",
volume = "152",
pages = "108447",
doi = "10.1016/j.bioelechem.2023.108447"
}

Zlatić, G., Martinović, I., Pilić, Z., Kodranov, I., Ciganović, J.,& Sokol, V.. (2023). The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa. in Bioelectrochemistry, 152, 108447.
https://doi.org/10.1016/j.bioelechem.2023.108447

Zlatić G, Martinović I, Pilić Z, Kodranov I, Ciganović J, Sokol V. The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa. in Bioelectrochemistry. 2023;152:108447.
doi:10.1016/j.bioelechem.2023.108447 .

Zlatić, Gloria, Martinović, Ivana, Pilić, Zora, Kodranov, Igor, Ciganović, Jovan, Sokol, Vesna, "The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa" in Bioelectrochemistry, 152 (2023):108447,
https://doi.org/10.1016/j.bioelechem.2023.108447 . .

TY  - JOUR
AU  - Vujin, Jasna
AU  - Huang, Weixin
AU  - Ciganović, Jovan
AU  - Ptasinska, Sylwia
AU  - Panajotović, Radmila
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11213
AB  - Tungsten disulfide, a transition metal dichalcogenide, has numerous applications as active components in gas- and chemical-sensing devices, photovoltaic sources, photocatalyst substrates, etc. In such devices, the presence of water in the sensing environment is a factor whose role has not been well-understood. To address this problem, the in situ probing of H2O molecule adsorption on WS2 films supported on solid substrates has been performed in a near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) setup. Instead, on the individual nanoflakes or spray-coated samples, the measurements were performed on highly transparent, homogeneous, thin films of WS2 nanosheets self-assembled at the interface of two immiscible liquids, water and toluene, transferred onto a solid substrate by the Langmuir-Schaefer technique. This experiment shows that edge defects in nanoflakes, tungsten dangling bond ensuing the exfoliation in the liquid phase, represent active sites for the WO3, WO3-x, and WO3·nH2O formation under ambient conditions. These oxides interact with water molecules when the WS2 films are exposed to water vapor in the NAP-XPS reaction cell. However, water molecules do not influence the W-S chemical bond, thus indicating the physisorption of H2O molecules at the WS2 film surface. © 2023 American Chemical Society.
T2  - Langmuir
T1  - Direct Probing of Water Adsorption on Liquid-Phase Exfoliated WS2 Films Formed by the Langmuir-Schaefer Technique
VL  - 39
IS  - 23
SP  - 8055
EP  - 8064
DO  - 10.1021/acs.langmuir.3c00107
ER  - 

@article{
author = "Vujin, Jasna and Huang, Weixin and Ciganović, Jovan and Ptasinska, Sylwia and Panajotović, Radmila",
year = "2023",
abstract = "Tungsten disulfide, a transition metal dichalcogenide, has numerous applications as active components in gas- and chemical-sensing devices, photovoltaic sources, photocatalyst substrates, etc. In such devices, the presence of water in the sensing environment is a factor whose role has not been well-understood. To address this problem, the in situ probing of H2O molecule adsorption on WS2 films supported on solid substrates has been performed in a near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) setup. Instead, on the individual nanoflakes or spray-coated samples, the measurements were performed on highly transparent, homogeneous, thin films of WS2 nanosheets self-assembled at the interface of two immiscible liquids, water and toluene, transferred onto a solid substrate by the Langmuir-Schaefer technique. This experiment shows that edge defects in nanoflakes, tungsten dangling bond ensuing the exfoliation in the liquid phase, represent active sites for the WO3, WO3-x, and WO3·nH2O formation under ambient conditions. These oxides interact with water molecules when the WS2 films are exposed to water vapor in the NAP-XPS reaction cell. However, water molecules do not influence the W-S chemical bond, thus indicating the physisorption of H2O molecules at the WS2 film surface. © 2023 American Chemical Society.",
journal = "Langmuir",
title = "Direct Probing of Water Adsorption on Liquid-Phase Exfoliated WS2 Films Formed by the Langmuir-Schaefer Technique",
volume = "39",
number = "23",
pages = "8055-8064",
doi = "10.1021/acs.langmuir.3c00107"
}

Vujin, J., Huang, W., Ciganović, J., Ptasinska, S.,& Panajotović, R.. (2023). Direct Probing of Water Adsorption on Liquid-Phase Exfoliated WS2 Films Formed by the Langmuir-Schaefer Technique. in Langmuir, 39(23), 8055-8064.
https://doi.org/10.1021/acs.langmuir.3c00107

Vujin J, Huang W, Ciganović J, Ptasinska S, Panajotović R. Direct Probing of Water Adsorption on Liquid-Phase Exfoliated WS2 Films Formed by the Langmuir-Schaefer Technique. in Langmuir. 2023;39(23):8055-8064.
doi:10.1021/acs.langmuir.3c00107 .

Vujin, Jasna, Huang, Weixin, Ciganović, Jovan, Ptasinska, Sylwia, Panajotović, Radmila, "Direct Probing of Water Adsorption on Liquid-Phase Exfoliated WS2 Films Formed by the Langmuir-Schaefer Technique" in Langmuir, 39, no. 23 (2023):8055-8064,
https://doi.org/10.1021/acs.langmuir.3c00107 . .

TY  - CONF
AU  - Cvijović-Alagić, Ivana
AU  - Laketić, Slađana
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe
AU  - Rakin, Marko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11326
AB  - Hard-tissue replacements are most commonly made from the Ti-based materials, such ascommercially pure titanium (CP-Ti) and Ti-6Al-4V (mass%) alloy, because of their exceptionalbiocompatible properties combined with the excellent corrosive and mechanical characteristics [1].More recently, efforts have been made to additionally enhance the properties of the metallicimplants through the careful selection of the alloy composition and surface modification technics[2,3]. As a result, second-generation β-type Ti alloys, containing non-toxic elements, have beendeveloped. One of the promising β-type implant alloys is Ti-13Nb-13Zr (mass%). Even though thecorrosion resistance and mechanical properties of this alloy are improved in comparison to thecommonly used metallic implant materials, its biocompatible and osseointegration properties canand must be additionally enhanced. For that purpose several surface modification technics can beused, however, laser irradiation stands out as the most promising one. Because of that scope of thepresent research was to investigate the possibility of successful surface modification of the mostcommonly used implant material, i.e. CP-Ti, and the second-generation Ti-13Nb-13Zr alloy byutilizing the easy-to-apply laser irradiation method in order to obtain improved implant tribocorrosiveproperties and enhanced biointegration and bioactivity.Laser surface modifications were conducted using the Nd:YAG system in the air and argonatmosphere under different laser output energies. Implant materials surface morphologies after thelaser irradiation treatment were investigated using the field-emission scanning electron microscopy(FE-SEM) and optical profilometry, while the impact of the laser irradiation on the implantmaterials surface characteristics were examined using the energy dispersive spectrometry (EDS)and microhardness measurements.Conducted research showed that utilization of the Nd:YAG laser irradiation resulted in significantalterations of the CP-Ti and Ti-13Nb-13Zr alloy surface chemistry, morphology and microhardness.Laser irradiation of both investigated materials led to the formation of visible microcracks andhydrodynamic effects in the central part of the irradiated area, while traces of melted and solidifiedmaterial were observed at its periphery. More pronounced morphological changes were inducedduring the laser irradiation in an argon atmosphere, while a higher degree of texturing was recordedat the surface of the Ti-13Nb-13Zr alloy. At the irradiated surfaces, the formation of the oxide layer,predominantly composed of Ti-oxide particles, was detected. Surface oxides are desirable sincetheir presence can improve the implant material bioactivity with a simultaneous increase of thetribo-corrosive properties through the formation of the hard corrosion resistance surface film. Laserinducedchemical and morphological alterations were more distinctive in the case of the Ti-13Nb-13Zr alloy.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement
SP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11326
ER  - 

@conference{
author = "Cvijović-Alagić, Ivana and Laketić, Slađana and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe and Rakin, Marko",
year = "2022",
abstract = "Hard-tissue replacements are most commonly made from the Ti-based materials, such ascommercially pure titanium (CP-Ti) and Ti-6Al-4V (mass%) alloy, because of their exceptionalbiocompatible properties combined with the excellent corrosive and mechanical characteristics [1].More recently, efforts have been made to additionally enhance the properties of the metallicimplants through the careful selection of the alloy composition and surface modification technics[2,3]. As a result, second-generation β-type Ti alloys, containing non-toxic elements, have beendeveloped. One of the promising β-type implant alloys is Ti-13Nb-13Zr (mass%). Even though thecorrosion resistance and mechanical properties of this alloy are improved in comparison to thecommonly used metallic implant materials, its biocompatible and osseointegration properties canand must be additionally enhanced. For that purpose several surface modification technics can beused, however, laser irradiation stands out as the most promising one. Because of that scope of thepresent research was to investigate the possibility of successful surface modification of the mostcommonly used implant material, i.e. CP-Ti, and the second-generation Ti-13Nb-13Zr alloy byutilizing the easy-to-apply laser irradiation method in order to obtain improved implant tribocorrosiveproperties and enhanced biointegration and bioactivity.Laser surface modifications were conducted using the Nd:YAG system in the air and argonatmosphere under different laser output energies. Implant materials surface morphologies after thelaser irradiation treatment were investigated using the field-emission scanning electron microscopy(FE-SEM) and optical profilometry, while the impact of the laser irradiation on the implantmaterials surface characteristics were examined using the energy dispersive spectrometry (EDS)and microhardness measurements.Conducted research showed that utilization of the Nd:YAG laser irradiation resulted in significantalterations of the CP-Ti and Ti-13Nb-13Zr alloy surface chemistry, morphology and microhardness.Laser irradiation of both investigated materials led to the formation of visible microcracks andhydrodynamic effects in the central part of the irradiated area, while traces of melted and solidifiedmaterial were observed at its periphery. More pronounced morphological changes were inducedduring the laser irradiation in an argon atmosphere, while a higher degree of texturing was recordedat the surface of the Ti-13Nb-13Zr alloy. At the irradiated surfaces, the formation of the oxide layer,predominantly composed of Ti-oxide particles, was detected. Surface oxides are desirable sincetheir presence can improve the implant material bioactivity with a simultaneous increase of thetribo-corrosive properties through the formation of the hard corrosion resistance surface film. Laserinducedchemical and morphological alterations were more distinctive in the case of the Ti-13Nb-13Zr alloy.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement",
pages = "20",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11326"
}

Cvijović-Alagić, I., Laketić, S., Momčilović, M., Ciganović, J., Veljović, Đ.,& Rakin, M.. (2022). Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 20.
https://hdl.handle.net/21.15107/rcub_vinar_11326

Cvijović-Alagić I, Laketić S, Momčilović M, Ciganović J, Veljović Đ, Rakin M. Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:20.
https://hdl.handle.net/21.15107/rcub_vinar_11326 .

Cvijović-Alagić, Ivana, Laketić, Slađana, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe, Rakin, Marko, "Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):20,
https://hdl.handle.net/21.15107/rcub_vinar_11326 .

TY  - CONF
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe
AU  - Cvijović-Alagić, Ivana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11328
AB  - Titanium alloys are finding increasing use as biomaterials due to their low elastic modulus and high damage tolerance. However, the somewhat inadequate alloy surface performance can impede their biomedical application. Surface modification methods have been therefore developed to improve the alloys' surface bioactivity and osseointegration. Laser treatment allows the alloy surface to be modified, providing it with new functionalized surface chemistry and morphology, without compromising the rest of the material properties. Thus, the aim of the study was to examine the laser-induced alterations generated on the Ti-45Nb alloy surface by an ultrashort pulsed laser. The obtained results reveal that laser beam interaction with the target material led to the formation of significant alterations in surface morphology. Surface craters, microcracks, and surface features in the form of periodic and rippled structures and solidified droplets can be observed in the irradiated area. Also, it was found that the higher damage degree along with the material depth and the higher surface roughness were achieved during the irradiation in the argon atmosphere due to the formation of the more pronounced morphological changes on the alloy surface that are induced by higher laser ablation. Furthermore, obtained results showed that alloy surface modification in air, argon, and nitrogen atmosphere additionally caused changes in the surface chemical composition. Namely, after irradiation, the presence of oxygen was observed in the central irradiated area indicating the formation of bioactive Ti-oxide surface film with content that varies with the irradiation parameters variation. Therefore, laser beam irradiation can be singled out as the surface modification method for efficient inducement of the specific surface characteristics that can provide titanium alloys with enhanced osseointegration properties.
PB  - Belgrade : Materials Research Society of Serbia – MRS-Serbia
C3  - 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts
T1  - Laser-induced chemical and mophological changes of the titanium alloy surface under different irradiation parameters
VL  - XLV
SP  - 92
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11328
ER  - 

@conference{
author = "Laketić, Slađana and Rakin, Marko and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe and Cvijović-Alagić, Ivana",
year = "2022",
abstract = "Titanium alloys are finding increasing use as biomaterials due to their low elastic modulus and high damage tolerance. However, the somewhat inadequate alloy surface performance can impede their biomedical application. Surface modification methods have been therefore developed to improve the alloys' surface bioactivity and osseointegration. Laser treatment allows the alloy surface to be modified, providing it with new functionalized surface chemistry and morphology, without compromising the rest of the material properties. Thus, the aim of the study was to examine the laser-induced alterations generated on the Ti-45Nb alloy surface by an ultrashort pulsed laser. The obtained results reveal that laser beam interaction with the target material led to the formation of significant alterations in surface morphology. Surface craters, microcracks, and surface features in the form of periodic and rippled structures and solidified droplets can be observed in the irradiated area. Also, it was found that the higher damage degree along with the material depth and the higher surface roughness were achieved during the irradiation in the argon atmosphere due to the formation of the more pronounced morphological changes on the alloy surface that are induced by higher laser ablation. Furthermore, obtained results showed that alloy surface modification in air, argon, and nitrogen atmosphere additionally caused changes in the surface chemical composition. Namely, after irradiation, the presence of oxygen was observed in the central irradiated area indicating the formation of bioactive Ti-oxide surface film with content that varies with the irradiation parameters variation. Therefore, laser beam irradiation can be singled out as the surface modification method for efficient inducement of the specific surface characteristics that can provide titanium alloys with enhanced osseointegration properties.",
publisher = "Belgrade : Materials Research Society of Serbia – MRS-Serbia",
journal = "23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts",
title = "Laser-induced chemical and mophological changes of the titanium alloy surface under different irradiation parameters",
volume = "XLV",
pages = "92-92",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11328"
}

Laketić, S., Rakin, M., Momčilović, M., Ciganović, J., Veljović, Đ.,& Cvijović-Alagić, I.. (2022). Laser-induced chemical and mophological changes of the titanium alloy surface under different irradiation parameters. in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts
Belgrade : Materials Research Society of Serbia – MRS-Serbia., XLV, 92-92.
https://hdl.handle.net/21.15107/rcub_vinar_11328

Laketić S, Rakin M, Momčilović M, Ciganović J, Veljović Đ, Cvijović-Alagić I. Laser-induced chemical and mophological changes of the titanium alloy surface under different irradiation parameters. in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts. 2022;XLV:92-92.
https://hdl.handle.net/21.15107/rcub_vinar_11328 .

Laketić, Slađana, Rakin, Marko, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe, Cvijović-Alagić, Ivana, "Laser-induced chemical and mophological changes of the titanium alloy surface under different irradiation parameters" in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts, XLV (2022):92-92,
https://hdl.handle.net/21.15107/rcub_vinar_11328 .

TY  - CONF
AU  - Ciganović, Jovan
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Stašić, Jelena
AU  - Trtica, Milan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12094
AB  - The interaction of lasers with metals has been studied for decades, and has been especially intensified lately, due to the development of new, efficient pulsed lasers. Titanium has a number of excellent properties, making it applicable in various modern technologies. Treatment and processing of titanium is possible with various techniques, and the application of lasers gives a special quality, such as high precision machining or obtaining specific structures on the surface which cannot be generated by other methods. During our research, surface processing of titanium was conducted by various pulsed lasers: nanosecond CO2 laser, picosecond Nd:YAG laser and femtosecond Ti: sapphire laser. In order to find the optimal conditions for surface modification of titanium, the influence of different laser parameters (wavelength, pulse duration, pulse energy, etc.), as well as the influence of the ambient, was examined. The titanium samples were irradiated in different environments, ie. in air, oxygen, nitrogen, carbon dioxide, helium and in vacuum, which affected the chemical composition and morphology of the target surface.
C3  - SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts
T1  - Action of pulsed lasers on titanium target: surface effects
VL  - 102
SP  - 77
EP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12094
ER  - 

@conference{
author = "Ciganović, Jovan and Momčilović, Miloš and Živković, Sanja and Stašić, Jelena and Trtica, Milan",
year = "2022",
abstract = "The interaction of lasers with metals has been studied for decades, and has been especially intensified lately, due to the development of new, efficient pulsed lasers. Titanium has a number of excellent properties, making it applicable in various modern technologies. Treatment and processing of titanium is possible with various techniques, and the application of lasers gives a special quality, such as high precision machining or obtaining specific structures on the surface which cannot be generated by other methods. During our research, surface processing of titanium was conducted by various pulsed lasers: nanosecond CO2 laser, picosecond Nd:YAG laser and femtosecond Ti: sapphire laser. In order to find the optimal conditions for surface modification of titanium, the influence of different laser parameters (wavelength, pulse duration, pulse energy, etc.), as well as the influence of the ambient, was examined. The titanium samples were irradiated in different environments, ie. in air, oxygen, nitrogen, carbon dioxide, helium and in vacuum, which affected the chemical composition and morphology of the target surface.",
journal = "SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts",
title = "Action of pulsed lasers on titanium target: surface effects",
volume = "102",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12094"
}

Ciganović, J., Momčilović, M., Živković, S., Stašić, J.,& Trtica, M.. (2022). Action of pulsed lasers on titanium target: surface effects. in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts, 102, 77-77.
https://hdl.handle.net/21.15107/rcub_vinar_12094

Ciganović J, Momčilović M, Živković S, Stašić J, Trtica M. Action of pulsed lasers on titanium target: surface effects. in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts. 2022;102:77-77.
https://hdl.handle.net/21.15107/rcub_vinar_12094 .

Ciganović, Jovan, Momčilović, Miloš, Živković, Sanja, Stašić, Jelena, Trtica, Milan, "Action of pulsed lasers on titanium target: surface effects" in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts, 102 (2022):77-77,
https://hdl.handle.net/21.15107/rcub_vinar_12094 .

TY  - CONF
AU  - Aćimović, Danka
AU  - Brdarić, Tanja
AU  - Vasić Anićijević, Dragana
AU  - Simić, Marija
AU  - Ciganović, Jovan
AU  - Momčilović, Miloš
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12808
AB  - In this study, surface modification of the graphite plate electrode induced by laser
irradiation treatment is presented. The electrode was irradiated in air and argon
atmosphere using the Nd:YAG laser. Surface modifications were analyzed by
profilometric measurements. The influence of irradiation atmosphere on electrochemical
active surface of graphite electrode was observed using cyclic voltammetry. The results
indicate that electrochemical active surface area of graphite electrode was increased using
laser irradiation, and highest value was obtained by laser irradiation in air atmosphere.
These cognitions can be useful for application of laser-treated electrode in environmental
chemistry for detection or removal of organic pollutants.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - Modification of graphite electrode surface by laser irradiation-role of irradiation atmosphere
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12808
ER  - 

@conference{
author = "Aćimović, Danka and Brdarić, Tanja and Vasić Anićijević, Dragana and Simić, Marija and Ciganović, Jovan and Momčilović, Miloš",
year = "2022",
abstract = "In this study, surface modification of the graphite plate electrode induced by laser
irradiation treatment is presented. The electrode was irradiated in air and argon
atmosphere using the Nd:YAG laser. Surface modifications were analyzed by
profilometric measurements. The influence of irradiation atmosphere on electrochemical
active surface of graphite electrode was observed using cyclic voltammetry. The results
indicate that electrochemical active surface area of graphite electrode was increased using
laser irradiation, and highest value was obtained by laser irradiation in air atmosphere.
These cognitions can be useful for application of laser-treated electrode in environmental
chemistry for detection or removal of organic pollutants.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "Modification of graphite electrode surface by laser irradiation-role of irradiation atmosphere",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12808"
}

Aćimović, D., Brdarić, T., Vasić Anićijević, D., Simić, M., Ciganović, J.,& Momčilović, M.. (2022). Modification of graphite electrode surface by laser irradiation-role of irradiation atmosphere. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_12808

Aćimović D, Brdarić T, Vasić Anićijević D, Simić M, Ciganović J, Momčilović M. Modification of graphite electrode surface by laser irradiation-role of irradiation atmosphere. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_12808 .

Aćimović, Danka, Brdarić, Tanja, Vasić Anićijević, Dragana, Simić, Marija, Ciganović, Jovan, Momčilović, Miloš, "Modification of graphite electrode surface by laser irradiation-role of irradiation atmosphere" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings (2022),
https://hdl.handle.net/21.15107/rcub_vinar_12808 .

TY  - CONF
AU  - Popović, D. M.
AU  - Kushima, A.
AU  - Zekić, A. A.
AU  - Kasalica, B.
AU  - Stašić, Jelena
AU  - Ciganović, Jovan
AU  - Bogdanović, M.
AU  - Trtica, Milan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12095
AB  - Silicon-based nanoparticles (SiNPs) attract authors’ attention due its application prospects in a mutual field, from energy storage to bio-imaging. One of the most prominent methods for synthesis of SiNPs is pulsed laser ablation in liquid media (LAL), because it is simple, and it provides the minimum of contamination of the sample produced. Employed pulsed lasers in LAL are ns- and ps-, and the usage of fs- lasers are reported recently, as well. The objects of the LAL analyses are ablated craters on the Si target surface and, predominantly, the ablated material. Here, SiNPs are synthesized by ps- laser (150 ps, 1064 nm) ablation of Si single-crystal plates in de-ionized water. The focus of the work is the impact of the additional continuous wave (CW) laser (532nm) on the properties of the ablated material, i.e. SiNPs produced. The comprehensive analyses were performed, including the SiNPs’ size distribution, agglomeration abilities, aging, chemical properties (amount of oxygen and its distribution within the particles), and photoluminescence (PL) properties of the solution produced. It is demonstrated that PL properties of obtained SiNPs solution are impacted by introducing the CW laser in the ablation process. The peculiarity lies in the fact that such impact depends on both the PL excitation wavelength and the power of the introduced CW laser, which might open the possibility of successful tailoring of SiNPs produced by LAL.
C3  - SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts
T1  - Picosecond pulsed laser ablation of silicon single crystal
VL  - 102
SP  - 81
EP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12095
ER  - 

@conference{
author = "Popović, D. M. and Kushima, A. and Zekić, A. A. and Kasalica, B. and Stašić, Jelena and Ciganović, Jovan and Bogdanović, M. and Trtica, Milan",
year = "2022",
abstract = "Silicon-based nanoparticles (SiNPs) attract authors’ attention due its application prospects in a mutual field, from energy storage to bio-imaging. One of the most prominent methods for synthesis of SiNPs is pulsed laser ablation in liquid media (LAL), because it is simple, and it provides the minimum of contamination of the sample produced. Employed pulsed lasers in LAL are ns- and ps-, and the usage of fs- lasers are reported recently, as well. The objects of the LAL analyses are ablated craters on the Si target surface and, predominantly, the ablated material. Here, SiNPs are synthesized by ps- laser (150 ps, 1064 nm) ablation of Si single-crystal plates in de-ionized water. The focus of the work is the impact of the additional continuous wave (CW) laser (532nm) on the properties of the ablated material, i.e. SiNPs produced. The comprehensive analyses were performed, including the SiNPs’ size distribution, agglomeration abilities, aging, chemical properties (amount of oxygen and its distribution within the particles), and photoluminescence (PL) properties of the solution produced. It is demonstrated that PL properties of obtained SiNPs solution are impacted by introducing the CW laser in the ablation process. The peculiarity lies in the fact that such impact depends on both the PL excitation wavelength and the power of the introduced CW laser, which might open the possibility of successful tailoring of SiNPs produced by LAL.",
journal = "SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts",
title = "Picosecond pulsed laser ablation of silicon single crystal",
volume = "102",
pages = "81-81",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12095"
}

Popović, D. M., Kushima, A., Zekić, A. A., Kasalica, B., Stašić, J., Ciganović, J., Bogdanović, M.,& Trtica, M.. (2022). Picosecond pulsed laser ablation of silicon single crystal. in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts, 102, 81-81.
https://hdl.handle.net/21.15107/rcub_vinar_12095

Popović DM, Kushima A, Zekić AA, Kasalica B, Stašić J, Ciganović J, Bogdanović M, Trtica M. Picosecond pulsed laser ablation of silicon single crystal. in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts. 2022;102:81-81.
https://hdl.handle.net/21.15107/rcub_vinar_12095 .

Popović, D. M., Kushima, A., Zekić, A. A., Kasalica, B., Stašić, Jelena, Ciganović, Jovan, Bogdanović, M., Trtica, Milan, "Picosecond pulsed laser ablation of silicon single crystal" in SPIG 2022 : 31st Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers and abstracts, 102 (2022):81-81,
https://hdl.handle.net/21.15107/rcub_vinar_12095 .

TY  - CONF
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11327
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
C3  - 14th EcerS Conference for Young Scientists in Ceramics, CYSC
T1  - Surface damage caused by laser irradiation of the Ti45Nb alloy processed by high-pressure torsion
SP  - 53
EP  - 53
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11327
ER  - 

@conference{
author = "Laketić, Slađana and Rakin, Marko and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe and Cvijović-Alagić, Ivana",
year = "2021",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "14th EcerS Conference for Young Scientists in Ceramics, CYSC",
title = "Surface damage caused by laser irradiation of the Ti45Nb alloy processed by high-pressure torsion",
pages = "53-53",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11327"
}

Laketić, S., Rakin, M., Momčilović, M., Ciganović, J., Veljović, Đ.,& Cvijović-Alagić, I.. (2021). Surface damage caused by laser irradiation of the Ti45Nb alloy processed by high-pressure torsion. in 14th EcerS Conference for Young Scientists in Ceramics, CYSC
Novi Sad : Faculty of Technology, University of Novi Sad., 53-53.
https://hdl.handle.net/21.15107/rcub_vinar_11327

Laketić S, Rakin M, Momčilović M, Ciganović J, Veljović Đ, Cvijović-Alagić I. Surface damage caused by laser irradiation of the Ti45Nb alloy processed by high-pressure torsion. in 14th EcerS Conference for Young Scientists in Ceramics, CYSC. 2021;:53-53.
https://hdl.handle.net/21.15107/rcub_vinar_11327 .

Laketić, Slađana, Rakin, Marko, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe, Cvijović-Alagić, Ivana, "Surface damage caused by laser irradiation of the Ti45Nb alloy processed by high-pressure torsion" in 14th EcerS Conference for Young Scientists in Ceramics, CYSC (2021):53-53,
https://hdl.handle.net/21.15107/rcub_vinar_11327 .

TY  - JOUR
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe N.
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9735
AB  - The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti-13Nb-13Zr alloy in air and argon atmospheres were studied under different laser output energy values. During the interaction of laser irradiation with the investigated materials, a part of the energy was absorbed on the target surface, influencing surface modifications. Laser beam interaction with the target surface resulted in various morphological alterations, resulting in crater formation and the presence of microcracks and hydrodynamic structures. Moreover, different chemical changes were induced on the target materials' surfaces, resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy absorption. Given the high energy absorption at the site of interaction, the dimensions of the surface damaged area increased. Consequently, surface roughness increased. The appearance of surface oxides also led to the increased material hardness in the surface-modified area. Observed chemical and morphological changes were pronounced after laser irradiation of the Ti-13Nb-13Zr alloy surface.
PB  - Springer, New York
T2  - International Journal of Minerals Metallurgy and Materials
T1  - Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser
DO  - 10.1007/s12613-020-2061-9
ER  - 

@article{
author = "Laketić, Slađana and Rakin, Marko and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe N. and Cvijović-Alagić, Ivana",
year = "2021",
abstract = "The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti-13Nb-13Zr alloy in air and argon atmospheres were studied under different laser output energy values. During the interaction of laser irradiation with the investigated materials, a part of the energy was absorbed on the target surface, influencing surface modifications. Laser beam interaction with the target surface resulted in various morphological alterations, resulting in crater formation and the presence of microcracks and hydrodynamic structures. Moreover, different chemical changes were induced on the target materials' surfaces, resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy absorption. Given the high energy absorption at the site of interaction, the dimensions of the surface damaged area increased. Consequently, surface roughness increased. The appearance of surface oxides also led to the increased material hardness in the surface-modified area. Observed chemical and morphological changes were pronounced after laser irradiation of the Ti-13Nb-13Zr alloy surface.",
publisher = "Springer, New York",
journal = "International Journal of Minerals Metallurgy and Materials",
title = "Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser",
doi = "10.1007/s12613-020-2061-9"
}

Laketić, S., Rakin, M., Momčilović, M., Ciganović, J., Veljović, Đ. N.,& Cvijović-Alagić, I.. (2021). Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser. in International Journal of Minerals Metallurgy and Materials
Springer, New York..
https://doi.org/10.1007/s12613-020-2061-9

Laketić S, Rakin M, Momčilović M, Ciganović J, Veljović ĐN, Cvijović-Alagić I. Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser. in International Journal of Minerals Metallurgy and Materials. 2021;.
doi:10.1007/s12613-020-2061-9 .

Laketić, Slađana, Rakin, Marko, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe N., Cvijović-Alagić, Ivana, "Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser" in International Journal of Minerals Metallurgy and Materials (2021),
https://doi.org/10.1007/s12613-020-2061-9 . .

TY  - JOUR
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe N.
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9747
AB  - In the present study surface alterations of the high pressure torsion (HPT)-deformed Ti[sbnd]45Nb (mass%) alloy induced by laser irradiation treatment are presented. The alloy was irradiated in air, argon, and nitrogen atmosphere using the Nd:YAG laser. Laser-induced surface modifications were analyzed by field-emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), profilometric analysis, and Vickers microhardness measurements. Alloy irradiation under a low laser output energy and a low number of accumulated pulses resulted in the formation of shallow surface craters. An increase of these irradiation parameters caused the appearance of more pronounced surface craters with microcracks and hydrodynamic effects in the form of wave-like structures, ripples, and solidified droplets and consequently caused an increase in the surface roughness. The highest value of the surface roughness of 3.062 μm was attained during the alloy irradiation in argon atmosphere under 15 mJ with 150 accumulated pulses. Interaction of the laser beam with the alloy surface was accompanied by plasma formation and surface ablation due to the irradiation energy absorption. The maximal ablated target material volumes of 5.5 × 1014 nm3 and 2.6 × 1014 nm3 were observed after the irradiation under 15 mJ with 150 accumulated pulses in argon and air atmosphere, respectively. Moreover, attainment of high temperatures at the alloy surface induced its chemical composition alterations. Formation of mixed Ti- and Nb-oxide surface film and absence of nitride particles at the alloy surface was detected irrespective of the irradiation atmosphere. Irradiation in air resulted in the appearance of the most pronounced surface oxide layer with the highest microhardness value which can in great merit influence an increase of the alloy bio-integration abilities and its tribo-corrosion resistance. © 2021 Elsevier B.V.
T2  - Surface and Coatings Technology
T1  - Influence of laser irradiation parameters on the ultrafine-grained Ti45Nb alloy surface characteristics
VL  - 418
SP  - 127255
DO  - 10.1016/j.surfcoat.2021.127255
ER  - 

@article{
author = "Laketić, Slađana and Rakin, Marko and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe N. and Cvijović-Alagić, Ivana",
year = "2021",
abstract = "In the present study surface alterations of the high pressure torsion (HPT)-deformed Ti[sbnd]45Nb (mass%) alloy induced by laser irradiation treatment are presented. The alloy was irradiated in air, argon, and nitrogen atmosphere using the Nd:YAG laser. Laser-induced surface modifications were analyzed by field-emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), profilometric analysis, and Vickers microhardness measurements. Alloy irradiation under a low laser output energy and a low number of accumulated pulses resulted in the formation of shallow surface craters. An increase of these irradiation parameters caused the appearance of more pronounced surface craters with microcracks and hydrodynamic effects in the form of wave-like structures, ripples, and solidified droplets and consequently caused an increase in the surface roughness. The highest value of the surface roughness of 3.062 μm was attained during the alloy irradiation in argon atmosphere under 15 mJ with 150 accumulated pulses. Interaction of the laser beam with the alloy surface was accompanied by plasma formation and surface ablation due to the irradiation energy absorption. The maximal ablated target material volumes of 5.5 × 1014 nm3 and 2.6 × 1014 nm3 were observed after the irradiation under 15 mJ with 150 accumulated pulses in argon and air atmosphere, respectively. Moreover, attainment of high temperatures at the alloy surface induced its chemical composition alterations. Formation of mixed Ti- and Nb-oxide surface film and absence of nitride particles at the alloy surface was detected irrespective of the irradiation atmosphere. Irradiation in air resulted in the appearance of the most pronounced surface oxide layer with the highest microhardness value which can in great merit influence an increase of the alloy bio-integration abilities and its tribo-corrosion resistance. © 2021 Elsevier B.V.",
journal = "Surface and Coatings Technology",
title = "Influence of laser irradiation parameters on the ultrafine-grained Ti45Nb alloy surface characteristics",
volume = "418",
pages = "127255",
doi = "10.1016/j.surfcoat.2021.127255"
}

Laketić, S., Rakin, M., Momčilović, M., Ciganović, J., Veljović, Đ. N.,& Cvijović-Alagić, I.. (2021). Influence of laser irradiation parameters on the ultrafine-grained Ti45Nb alloy surface characteristics. in Surface and Coatings Technology, 418, 127255.
https://doi.org/10.1016/j.surfcoat.2021.127255

Laketić S, Rakin M, Momčilović M, Ciganović J, Veljović ĐN, Cvijović-Alagić I. Influence of laser irradiation parameters on the ultrafine-grained Ti45Nb alloy surface characteristics. in Surface and Coatings Technology. 2021;418:127255.
doi:10.1016/j.surfcoat.2021.127255 .

Laketić, Slađana, Rakin, Marko, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe N., Cvijović-Alagić, Ivana, "Influence of laser irradiation parameters on the ultrafine-grained Ti45Nb alloy surface characteristics" in Surface and Coatings Technology, 418 (2021):127255,
https://doi.org/10.1016/j.surfcoat.2021.127255 . .

TY  - CONF
AU  - Živković, Sanja
AU  - Petrović, Jelena
AU  - Ciganović, Jovan
AU  - Momčilović, Miloš
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10763
AB  - Laser-Induced Breakdown Spectroscopy (LIBS) has become a very popular analytical method given some of its unique features such as applicability to any type of sample, practically no sample preparation, stand-off sensing capability, speed of analysis, and a possibility to analysis even the light elements. In this paper, we present a unique laboratory LIBS setup developed in our research group. This system uses infrared TEA CO 2 laser as the excitation source and time-integrated spatially resolved (TISR) signal detection. In our recent publications, we have demonstrated the potential of using the cost- effective TEA CO 2 based LIBS system not only for the fast elemental analysis but also for the simultaneous determination of hardness of materials.
C3  - 30th Summer School and International Symposium on the Physics of Ionized Gases
T1  - Analytical capabilities of TEA CO2 laser based - LIBS setup
SP  - 151
EP  - 151
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10763
ER  - 

@conference{
author = "Živković, Sanja and Petrović, Jelena and Ciganović, Jovan and Momčilović, Miloš",
year = "2020",
abstract = "Laser-Induced Breakdown Spectroscopy (LIBS) has become a very popular analytical method given some of its unique features such as applicability to any type of sample, practically no sample preparation, stand-off sensing capability, speed of analysis, and a possibility to analysis even the light elements. In this paper, we present a unique laboratory LIBS setup developed in our research group. This system uses infrared TEA CO 2 laser as the excitation source and time-integrated spatially resolved (TISR) signal detection. In our recent publications, we have demonstrated the potential of using the cost- effective TEA CO 2 based LIBS system not only for the fast elemental analysis but also for the simultaneous determination of hardness of materials.",
journal = "30th Summer School and International Symposium on the Physics of Ionized Gases",
title = "Analytical capabilities of TEA CO2 laser based - LIBS setup",
pages = "151-151",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10763"
}

Živković, S., Petrović, J., Ciganović, J.,& Momčilović, M.. (2020). Analytical capabilities of TEA CO2 laser based - LIBS setup. in 30th Summer School and International Symposium on the Physics of Ionized Gases, 151-151.
https://hdl.handle.net/21.15107/rcub_vinar_10763

Živković S, Petrović J, Ciganović J, Momčilović M. Analytical capabilities of TEA CO2 laser based - LIBS setup. in 30th Summer School and International Symposium on the Physics of Ionized Gases. 2020;:151-151.
https://hdl.handle.net/21.15107/rcub_vinar_10763 .

Živković, Sanja, Petrović, Jelena, Ciganović, Jovan, Momčilović, Miloš, "Analytical capabilities of TEA CO2 laser based - LIBS setup" in 30th Summer School and International Symposium on the Physics of Ionized Gases (2020):151-151,
https://hdl.handle.net/21.15107/rcub_vinar_10763 .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Petrović, Jelena
AU  - Ciganović, Jovan
AU  - Cvijović-Alagić, Ivana
AU  - Koldžić, Filip
AU  - Živković, Sanja
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8570
AB  - The application of an alternative laser-induced breakdown spectroscopy (LIBS) method based on transversely excited atmospheric (TEA) CO2 laser was investigated for the first time for estimating the hardness of metallic materials. The human eye-safe (TEA) CO2 laser, operating at 10.6 µm, was used for plasma generation. The LIBS spectra were recorded by employing a cost-effective CCD camera for the time-integrated and spatial resolved measurements. The cast iron and aluminum alloys samples with different hardness have been tested. The ratio between the magnesium ionic and neutral lines in LIBS spectra was applied for estimating the material hardness. In addition, the hardness of all samples included in this study was determined using the conventional method for material hardness determination, i.e. Vickers hardness test. The linear dependence of magnesium lines intensity ratio on the sample’s hardness was obtained for both kinds of materials. Profilometric measurements were used to verify that the newly-introduced method is almost nondestructive for the investigated metals. The results obtained in the present work confirmed the potential of using this original LIBS system not only for the fast elemental analysis but also for the direct estimation of the hardness of metals and alloys. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach
VL  - 40
IS  - 2
SP  - 499
EP  - 510
DO  - 10.1007/s11090-020-10063-5
ER  - 

@article{
author = "Momčilović, Miloš and Petrović, Jelena and Ciganović, Jovan and Cvijović-Alagić, Ivana and Koldžić, Filip and Živković, Sanja",
year = "2020",
abstract = "The application of an alternative laser-induced breakdown spectroscopy (LIBS) method based on transversely excited atmospheric (TEA) CO2 laser was investigated for the first time for estimating the hardness of metallic materials. The human eye-safe (TEA) CO2 laser, operating at 10.6 µm, was used for plasma generation. The LIBS spectra were recorded by employing a cost-effective CCD camera for the time-integrated and spatial resolved measurements. The cast iron and aluminum alloys samples with different hardness have been tested. The ratio between the magnesium ionic and neutral lines in LIBS spectra was applied for estimating the material hardness. In addition, the hardness of all samples included in this study was determined using the conventional method for material hardness determination, i.e. Vickers hardness test. The linear dependence of magnesium lines intensity ratio on the sample’s hardness was obtained for both kinds of materials. Profilometric measurements were used to verify that the newly-introduced method is almost nondestructive for the investigated metals. The results obtained in the present work confirmed the potential of using this original LIBS system not only for the fast elemental analysis but also for the direct estimation of the hardness of metals and alloys. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach",
volume = "40",
number = "2",
pages = "499-510",
doi = "10.1007/s11090-020-10063-5"
}

Momčilović, M., Petrović, J., Ciganović, J., Cvijović-Alagić, I., Koldžić, F.,& Živković, S.. (2020). Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach. in Plasma Chemistry and Plasma Processing, 40(2), 499-510.
https://doi.org/10.1007/s11090-020-10063-5

Momčilović M, Petrović J, Ciganović J, Cvijović-Alagić I, Koldžić F, Živković S. Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach. in Plasma Chemistry and Plasma Processing. 2020;40(2):499-510.
doi:10.1007/s11090-020-10063-5 .

Momčilović, Miloš, Petrović, Jelena, Ciganović, Jovan, Cvijović-Alagić, Ivana, Koldžić, Filip, Živković, Sanja, "Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach" in Plasma Chemistry and Plasma Processing, 40, no. 2 (2020):499-510,
https://doi.org/10.1007/s11090-020-10063-5 . .

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Stoiljković, Milovan
AU  - Pavkov, Vladimir
AU  - Ciganović, Jovan
AU  - Cvijović-Alagić, Ivana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9526
AB  - Surface modifications of metallic biomaterials can in great merit, improve the properties of the hard-tissue implants and in that way contribute to the success of the surgical implantation process. Coating deposition stands out as one of the many surface-modifying techniques that can be used to improve implant surface properties and, in turn, induce successful osseointegration. Deposition of the TiO2 layer on the surface of the metallic implants has a great potential to enhance not only their osseointegration ability but also their biocompatibility and corrosion resistance. In the present study, the possibility of successful deposition of the TiO2 layer on the surface of commercially pure titanium (CP-Ti), as the most commonly used metallic implant material, by spraying the colloidal nanoparticles aqueous solution in the electric discharge plasma at atmospheric pressure was investigated. To characterize the colloidal TiO2 nanoparticle solution, used for the coating deposition process, transmission electron microscopy (TEM) was utilized, while scanning electron microscopy (SEM) and optical profilometry were used to investigate the deposited surface layer morphology and quality. Estimation of the deposited film quality and texture was used to confirm that the arc plasma deposition technique can be successfully used as an advanced and easy-to-apply method for coating the metallic implant material surface with the bioactive TiO2 layer which favors the osseointegration process through the improvement of the implant surface properties. The TiO2 coating was successfully deposited using the arc plasma deposition technique and covered the entire surface of the CP-Ti substrate without any signs of coating cracking or detachment.
T2  - Metallurgical and Materials Engineering
T1  - Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution
VL  - 26
IS  - 4
SP  - 341
EP  - 348
DO  - 10.30544/587
ER  - 

@article{
author = "Maksimović, Vesna and Stoiljković, Milovan and Pavkov, Vladimir and Ciganović, Jovan and Cvijović-Alagić, Ivana",
year = "2020",
abstract = "Surface modifications of metallic biomaterials can in great merit, improve the properties of the hard-tissue implants and in that way contribute to the success of the surgical implantation process. Coating deposition stands out as one of the many surface-modifying techniques that can be used to improve implant surface properties and, in turn, induce successful osseointegration. Deposition of the TiO2 layer on the surface of the metallic implants has a great potential to enhance not only their osseointegration ability but also their biocompatibility and corrosion resistance. In the present study, the possibility of successful deposition of the TiO2 layer on the surface of commercially pure titanium (CP-Ti), as the most commonly used metallic implant material, by spraying the colloidal nanoparticles aqueous solution in the electric discharge plasma at atmospheric pressure was investigated. To characterize the colloidal TiO2 nanoparticle solution, used for the coating deposition process, transmission electron microscopy (TEM) was utilized, while scanning electron microscopy (SEM) and optical profilometry were used to investigate the deposited surface layer morphology and quality. Estimation of the deposited film quality and texture was used to confirm that the arc plasma deposition technique can be successfully used as an advanced and easy-to-apply method for coating the metallic implant material surface with the bioactive TiO2 layer which favors the osseointegration process through the improvement of the implant surface properties. The TiO2 coating was successfully deposited using the arc plasma deposition technique and covered the entire surface of the CP-Ti substrate without any signs of coating cracking or detachment.",
journal = "Metallurgical and Materials Engineering",
title = "Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution",
volume = "26",
number = "4",
pages = "341-348",
doi = "10.30544/587"
}

Maksimović, V., Stoiljković, M., Pavkov, V., Ciganović, J.,& Cvijović-Alagić, I.. (2020). Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution. in Metallurgical and Materials Engineering, 26(4), 341-348.
https://doi.org/10.30544/587

Maksimović V, Stoiljković M, Pavkov V, Ciganović J, Cvijović-Alagić I. Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution. in Metallurgical and Materials Engineering. 2020;26(4):341-348.
doi:10.30544/587 .

Maksimović, Vesna, Stoiljković, Milovan, Pavkov, Vladimir, Ciganović, Jovan, Cvijović-Alagić, Ivana, "Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution" in Metallurgical and Materials Engineering, 26, no. 4 (2020):341-348,
https://doi.org/10.30544/587 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Stašić, Jelena
AU  - Limpouch, Jiri
AU  - Gavrilov, Peter T.
AU  - Chen, X.
AU  - Ciganović, Jovan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8608
AB  - The behavior of 16Cr3Al ODS steel (oxide dispersion strengthened steel), widely employed structural fusion material, under high-intensity laser radiation with intensity up to 10(14)W/cm(2) was investigated in air, helium and vacuum surrounding. Employed system was 65 fs laser at 804 nm, with applied pulse energy up to 5.25 mJ. Morphological effects were studied - cracking, crater parameters (depth, cross-section), LIPSS (laser-induced periodic surface structures) formation at the crater periphery, hydrodynamic effects, as well as chemical variations on the surface. Ablation thresholds were also determined for all three ambiences (for 100 applied pulses), and they were 0.30 J/cm(2), 0.23 J/cm(2) and 0.39 J/cm(2) in air, helium and vacuum, respectively. Plasma occurred in all experiments and it was most prominent in vacuum due to strongest laser-material coupling.
T2  - Fusion Engineering and Design
T1  - Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum
VL  - 150
SP  - 111360
DO  - 10.1016/j.fusengdes.2019.111360
ER  - 

@article{
author = "Trtica, Milan and Stašić, Jelena and Limpouch, Jiri and Gavrilov, Peter T. and Chen, X. and Ciganović, Jovan",
year = "2020",
abstract = "The behavior of 16Cr3Al ODS steel (oxide dispersion strengthened steel), widely employed structural fusion material, under high-intensity laser radiation with intensity up to 10(14)W/cm(2) was investigated in air, helium and vacuum surrounding. Employed system was 65 fs laser at 804 nm, with applied pulse energy up to 5.25 mJ. Morphological effects were studied - cracking, crater parameters (depth, cross-section), LIPSS (laser-induced periodic surface structures) formation at the crater periphery, hydrodynamic effects, as well as chemical variations on the surface. Ablation thresholds were also determined for all three ambiences (for 100 applied pulses), and they were 0.30 J/cm(2), 0.23 J/cm(2) and 0.39 J/cm(2) in air, helium and vacuum, respectively. Plasma occurred in all experiments and it was most prominent in vacuum due to strongest laser-material coupling.",
journal = "Fusion Engineering and Design",
title = "Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum",
volume = "150",
pages = "111360",
doi = "10.1016/j.fusengdes.2019.111360"
}

Trtica, M., Stašić, J., Limpouch, J., Gavrilov, P. T., Chen, X.,& Ciganović, J.. (2020). Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum. in Fusion Engineering and Design, 150, 111360.
https://doi.org/10.1016/j.fusengdes.2019.111360

Trtica M, Stašić J, Limpouch J, Gavrilov PT, Chen X, Ciganović J. Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum. in Fusion Engineering and Design. 2020;150:111360.
doi:10.1016/j.fusengdes.2019.111360 .

Trtica, Milan, Stašić, Jelena, Limpouch, Jiri, Gavrilov, Peter T., Chen, X., Ciganović, Jovan, "Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum" in Fusion Engineering and Design, 150 (2020):111360,
https://doi.org/10.1016/j.fusengdes.2019.111360 . .

TY  - JOUR
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Ciganović, Jovan
AU  - Petrović, Jelena
AU  - Savović, Jelena
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0584854719300849
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8204
AB  - Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses
VL  - 157
SP  - 37
EP  - 46
DO  - 10.1016/j.sab.2019.05.006
ER  - 

@article{
author = "Kuzmanović, Miroslav M. and Ranković, Dragan and Trtica, Milan and Ciganović, Jovan and Petrović, Jelena and Savović, Jelena",
year = "2019",
abstract = "Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses",
volume = "157",
pages = "37-46",
doi = "10.1016/j.sab.2019.05.006"
}

Kuzmanović, M. M., Ranković, D., Trtica, M., Ciganović, J., Petrović, J.,& Savović, J.. (2019). Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157, 37-46.
https://doi.org/10.1016/j.sab.2019.05.006

Kuzmanović MM, Ranković D, Trtica M, Ciganović J, Petrović J, Savović J. Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2019;157:37-46.
doi:10.1016/j.sab.2019.05.006 .

Kuzmanović, Miroslav M., Ranković, Dragan, Trtica, Milan, Ciganović, Jovan, Petrović, Jelena, Savović, Jelena, "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157 (2019):37-46,
https://doi.org/10.1016/j.sab.2019.05.006 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Petrović, Jelena
AU  - Cvijović-Alagić, Ivana
AU  - Ciganović, Jovan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8620
AB  - This study was carried out to examine the applicability of original laser-induced breakdown spectroscopy (LIBS) setup for determination of the surface hardness of lead glass as a function of its chemical composition. For this purpose, a set of five lead glass samples with different amount of ZrO2 was prepared. The LIBS measurements were carried out using TEA CO2 laser in the air at atmospheric pressure and without sample preparation. A ratio of the intensity between the Zr(II) 355.66 nm and Zr(I) 360.12 nm emission lines has been used to examine the hardness of the material. In addition, the surface hardness of glass samples was determined by Vickers’s indentation tests. Obtained results indicate a linear relationship of the measurements of hardness in glass samples between the LIBS and Vickers method. To show that LIBS based on TEA CO2 laser is an almost nondestructive technique, profilometric surface analysis was used. The proposed LIBS system is suitable not only for a spectrochemical analysis but also as an easy to use and cost-effective way to measure the surface hardness for all types and shapes of glass samples which are in some cases difficult to examine by standard Vicker’s method. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Applied Physics. B: Lasers and Optics
T1  - An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness
VL  - 125
IS  - 11
SP  - 222
DO  - 10.1007/s00340-019-7329-2
ER  - 

@article{
author = "Momčilović, Miloš and Živković, Sanja and Petrović, Jelena and Cvijović-Alagić, Ivana and Ciganović, Jovan",
year = "2019",
abstract = "This study was carried out to examine the applicability of original laser-induced breakdown spectroscopy (LIBS) setup for determination of the surface hardness of lead glass as a function of its chemical composition. For this purpose, a set of five lead glass samples with different amount of ZrO2 was prepared. The LIBS measurements were carried out using TEA CO2 laser in the air at atmospheric pressure and without sample preparation. A ratio of the intensity between the Zr(II) 355.66 nm and Zr(I) 360.12 nm emission lines has been used to examine the hardness of the material. In addition, the surface hardness of glass samples was determined by Vickers’s indentation tests. Obtained results indicate a linear relationship of the measurements of hardness in glass samples between the LIBS and Vickers method. To show that LIBS based on TEA CO2 laser is an almost nondestructive technique, profilometric surface analysis was used. The proposed LIBS system is suitable not only for a spectrochemical analysis but also as an easy to use and cost-effective way to measure the surface hardness for all types and shapes of glass samples which are in some cases difficult to examine by standard Vicker’s method. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Applied Physics. B: Lasers and Optics",
title = "An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness",
volume = "125",
number = "11",
pages = "222",
doi = "10.1007/s00340-019-7329-2"
}

Momčilović, M., Živković, S., Petrović, J., Cvijović-Alagić, I.,& Ciganović, J.. (2019). An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness. in Applied Physics. B: Lasers and Optics, 125(11), 222.
https://doi.org/10.1007/s00340-019-7329-2

Momčilović M, Živković S, Petrović J, Cvijović-Alagić I, Ciganović J. An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness. in Applied Physics. B: Lasers and Optics. 2019;125(11):222.
doi:10.1007/s00340-019-7329-2 .

Momčilović, Miloš, Živković, Sanja, Petrović, Jelena, Cvijović-Alagić, Ivana, Ciganović, Jovan, "An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness" in Applied Physics. B: Lasers and Optics, 125, no. 11 (2019):222,
https://doi.org/10.1007/s00340-019-7329-2 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Kuzmanović, Miroslav M.
AU  - Ciganović, Jovan
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Savović, Jelena
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8158
AB  - Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation
VL  - 39
IS  - 4
SP  - 985
EP  - 1000
DO  - 10.1007/s11090-019-09987-4
ER  - 

@article{
author = "Momčilović, Miloš and Živković, Sanja and Kuzmanović, Miroslav M. and Ciganović, Jovan and Ranković, Dragan and Trtica, Milan and Savović, Jelena",
year = "2019",
abstract = "Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation",
volume = "39",
number = "4",
pages = "985-1000",
doi = "10.1007/s11090-019-09987-4"
}

Momčilović, M., Živković, S., Kuzmanović, M. M., Ciganović, J., Ranković, D., Trtica, M.,& Savović, J.. (2019). The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing, 39(4), 985-1000.
https://doi.org/10.1007/s11090-019-09987-4

Momčilović M, Živković S, Kuzmanović MM, Ciganović J, Ranković D, Trtica M, Savović J. The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing. 2019;39(4):985-1000.
doi:10.1007/s11090-019-09987-4 .

Momčilović, Miloš, Živković, Sanja, Kuzmanović, Miroslav M., Ciganović, Jovan, Ranković, Dragan, Trtica, Milan, Savović, Jelena, "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation" in Plasma Chemistry and Plasma Processing, 39, no. 4 (2019):985-1000,
https://doi.org/10.1007/s11090-019-09987-4 . .

TY  - CONF
AU  - Trtica, Milan
AU  - Stašić, Jelena
AU  - Batani, D.
AU  - Benocci, R.
AU  - Narayanan, V.
AU  - Ciganović, Jovan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11886
AB  - Titanium target was irradiated by picosecond lasers with pulse length of 40 ps i.e. 150 ps in air and water environment. The goal was studying of the induced surface features in both ambiences, as well as synthesis of Ti-based nanoparticles in liquid. Morphologies of the target at both pulse lengths were studied by standard techniques, e.g. scanning electron microscope (SEM) and profilometry, while chemical analysis of the surface was done by energy-dispersive spectrometry (EDS). Interaction ps laser-Ti depends on a number of parameters – laser parameters, condition of the target surface, working ambience, etc. Irradiation conditions in this work were as follows: τ = 40/150 ps, wavelength 1064 nm, pulse frequency 10 Hz, pulse energy 2-20 mJ, pulse count 3000-9000, irradiation in focusing regime. Generally, induced features differ in air and water surrounding – damage is more diffuse in water, with characteristic wavy surface. In both media laser-induced periodic surface structures (LIPSS) are observed on the damage periphery, however they appear at lower pulse count in water. Irradiation of Ti in water led to creation of nanoparticles (NPs) in most cases as established by UV-Vis spectrophotometry, while their size distribution was determined by DLS (dynamic light scattering) analysis. These were, as expected, Ti-oxide NPs as laser ablation in water always leads to formation of oxide particles except in case of noble metals. The size and shape of NPs obtained using laser ablation in liquid (LAL) method depends strongly on the liquid medium used, as well as laser parameters. In our case NPs were spherical, sized from few tens to few hundreds of nanometers, with occurrence of smaller particles in case of 150 ps laser. With further optimization of conditions obtaining of smaller NPs can be expected.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Titanium target irradiation by picosecond laser in air and water – surface morphology and synthesis of nanoparticles
SP  - 163
EP  - 163
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11886
ER  - 

@conference{
author = "Trtica, Milan and Stašić, Jelena and Batani, D. and Benocci, R. and Narayanan, V. and Ciganović, Jovan",
year = "2019",
abstract = "Titanium target was irradiated by picosecond lasers with pulse length of 40 ps i.e. 150 ps in air and water environment. The goal was studying of the induced surface features in both ambiences, as well as synthesis of Ti-based nanoparticles in liquid. Morphologies of the target at both pulse lengths were studied by standard techniques, e.g. scanning electron microscope (SEM) and profilometry, while chemical analysis of the surface was done by energy-dispersive spectrometry (EDS). Interaction ps laser-Ti depends on a number of parameters – laser parameters, condition of the target surface, working ambience, etc. Irradiation conditions in this work were as follows: τ = 40/150 ps, wavelength 1064 nm, pulse frequency 10 Hz, pulse energy 2-20 mJ, pulse count 3000-9000, irradiation in focusing regime. Generally, induced features differ in air and water surrounding – damage is more diffuse in water, with characteristic wavy surface. In both media laser-induced periodic surface structures (LIPSS) are observed on the damage periphery, however they appear at lower pulse count in water. Irradiation of Ti in water led to creation of nanoparticles (NPs) in most cases as established by UV-Vis spectrophotometry, while their size distribution was determined by DLS (dynamic light scattering) analysis. These were, as expected, Ti-oxide NPs as laser ablation in water always leads to formation of oxide particles except in case of noble metals. The size and shape of NPs obtained using laser ablation in liquid (LAL) method depends strongly on the liquid medium used, as well as laser parameters. In our case NPs were spherical, sized from few tens to few hundreds of nanometers, with occurrence of smaller particles in case of 150 ps laser. With further optimization of conditions obtaining of smaller NPs can be expected.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Titanium target irradiation by picosecond laser in air and water – surface morphology and synthesis of nanoparticles",
pages = "163-163",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11886"
}

Trtica, M., Stašić, J., Batani, D., Benocci, R., Narayanan, V.,& Ciganović, J.. (2019). Titanium target irradiation by picosecond laser in air and water – surface morphology and synthesis of nanoparticles. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 163-163.
https://hdl.handle.net/21.15107/rcub_vinar_11886

Trtica M, Stašić J, Batani D, Benocci R, Narayanan V, Ciganović J. Titanium target irradiation by picosecond laser in air and water – surface morphology and synthesis of nanoparticles. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:163-163.
https://hdl.handle.net/21.15107/rcub_vinar_11886 .

Trtica, Milan, Stašić, Jelena, Batani, D., Benocci, R., Narayanan, V., Ciganović, Jovan, "Titanium target irradiation by picosecond laser in air and water – surface morphology and synthesis of nanoparticles" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):163-163,
https://hdl.handle.net/21.15107/rcub_vinar_11886 .

TY  - JOUR
AU  - Trtica, Milan
AU  - Stašić, Jelena
AU  - Batani, Dimitri
AU  - Benocci, R.
AU  - Narayanan, V.
AU  - Ciganović, Jovan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1828
AB  - A study of the surface modification of titanium CP grade 2 implant/target with high intensity picosecond (Nd:YAG) laser, operating at 1064 nm wavelength and pulse duration of 40 ps, in gaseous (air) and liquid (water) medium, is presented. The exposure of Ti to a laser pulse energy of 17 mJ in both media - gaseous and liquid, induced specific surface features and phenomena: (i) enhancement of the implant surface roughness (higher in water). In this context, the damage depth is more prominent in water (as high as 40 mu m) vs. air (similar to 14 mu m). Also, the appearance of laser induced periodic surface structures (LIPSS) is recorded in both media, at periphery area, while in water they are registered at lower pulse count; (ii) variation of chemical surface content depending on the applied medium. Thus, in the central irradiation region, the oxygen was absent in air while its concentration was relatively high (6.44 wt%) in case of water; (iii) possibility of direct collection of synthesized titanium based nanoparticles in water environment, and (iv) formation of the plasma above the sample in both mediums, more volumetrically confined in water. These investigations showed that surface structuring and observed phenomena are in strong correlation with the medium used. The liquid - water seems like the medium of choice in regard to titanium implant biocompatibility and bio-activity (the water is a favorable medium for build-up of the oxide layer which affects bioactivity). The process of laser interaction with titanium implant targets was accompanied by the formation of plasma plume, which provides the additional sterilizing effect facilitating contaminant-free conditions. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Laser-assisted surface modification of Ti-implant in air and water environment
VL  - 428
SP  - 669
EP  - 675
DO  - 10.1016/j.apsusc.2017.09.185
ER  - 

@article{
author = "Trtica, Milan and Stašić, Jelena and Batani, Dimitri and Benocci, R. and Narayanan, V. and Ciganović, Jovan",
year = "2018",
abstract = "A study of the surface modification of titanium CP grade 2 implant/target with high intensity picosecond (Nd:YAG) laser, operating at 1064 nm wavelength and pulse duration of 40 ps, in gaseous (air) and liquid (water) medium, is presented. The exposure of Ti to a laser pulse energy of 17 mJ in both media - gaseous and liquid, induced specific surface features and phenomena: (i) enhancement of the implant surface roughness (higher in water). In this context, the damage depth is more prominent in water (as high as 40 mu m) vs. air (similar to 14 mu m). Also, the appearance of laser induced periodic surface structures (LIPSS) is recorded in both media, at periphery area, while in water they are registered at lower pulse count; (ii) variation of chemical surface content depending on the applied medium. Thus, in the central irradiation region, the oxygen was absent in air while its concentration was relatively high (6.44 wt%) in case of water; (iii) possibility of direct collection of synthesized titanium based nanoparticles in water environment, and (iv) formation of the plasma above the sample in both mediums, more volumetrically confined in water. These investigations showed that surface structuring and observed phenomena are in strong correlation with the medium used. The liquid - water seems like the medium of choice in regard to titanium implant biocompatibility and bio-activity (the water is a favorable medium for build-up of the oxide layer which affects bioactivity). The process of laser interaction with titanium implant targets was accompanied by the formation of plasma plume, which provides the additional sterilizing effect facilitating contaminant-free conditions. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Laser-assisted surface modification of Ti-implant in air and water environment",
volume = "428",
pages = "669-675",
doi = "10.1016/j.apsusc.2017.09.185"
}

Trtica, M., Stašić, J., Batani, D., Benocci, R., Narayanan, V.,& Ciganović, J.. (2018). Laser-assisted surface modification of Ti-implant in air and water environment. in Applied Surface Science, 428, 669-675.
https://doi.org/10.1016/j.apsusc.2017.09.185

Trtica M, Stašić J, Batani D, Benocci R, Narayanan V, Ciganović J. Laser-assisted surface modification of Ti-implant in air and water environment. in Applied Surface Science. 2018;428:669-675.
doi:10.1016/j.apsusc.2017.09.185 .

Trtica, Milan, Stašić, Jelena, Batani, Dimitri, Benocci, R., Narayanan, V., Ciganović, Jovan, "Laser-assisted surface modification of Ti-implant in air and water environment" in Applied Surface Science, 428 (2018):669-675,
https://doi.org/10.1016/j.apsusc.2017.09.185 . .

TY  - JOUR
AU  - Obradović, Marko O.
AU  - Kovač, Janez
AU  - Petrović, Suzana
AU  - Lazović, Vladimir M.
AU  - Salatić, Branislav
AU  - Ciganović, Jovan
AU  - Pjević, Dejan J.
AU  - Milosavljević, Momir
AU  - Peruško, Davor
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7721
AB  - The possibility of interlayer mixing in a Ti/Ta multilayer system, induced by laser irradiation, was the main purpose of these experiments. Ti/Ta multilayer system, consisting of ten alternating Ti and Ta thin films and covered by slightly thicker Ti layer, was deposited on Si (100) wafers to a total thickness of 205 nm. Laser irradiation was performed in air by picoseconds Nd:YAG laser pulses in defocused regime with fluences of 0.057 and 0.11 J cm−2. Laser beam was scanned over the 5 × 5 mm surface area with different steps along y-axes. Structural and compositional characterisation was done by auger electron spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. Laser processing at lower fluence caused only oxidation of the top Ti layer, despite of the number of applied laser pulses. Interlayer mixing was not observed. Application of laser pulses at fluence of 0.11 J cm−2caused partial and/or complete ablation of deposited layers. In partially ablated regions considerable mixing between Ti and Ta films was registered.
T2  - Optical and Quantum Electronics
T1  - Laser induced mixing in multilayered Ti/Ta thin film structures
VL  - 50
IS  - 6
SP  - 257
DO  - 10.1007/s11082-018-1525-x
ER  - 

@article{
author = "Obradović, Marko O. and Kovač, Janez and Petrović, Suzana and Lazović, Vladimir M. and Salatić, Branislav and Ciganović, Jovan and Pjević, Dejan J. and Milosavljević, Momir and Peruško, Davor",
year = "2018",
abstract = "The possibility of interlayer mixing in a Ti/Ta multilayer system, induced by laser irradiation, was the main purpose of these experiments. Ti/Ta multilayer system, consisting of ten alternating Ti and Ta thin films and covered by slightly thicker Ti layer, was deposited on Si (100) wafers to a total thickness of 205 nm. Laser irradiation was performed in air by picoseconds Nd:YAG laser pulses in defocused regime with fluences of 0.057 and 0.11 J cm−2. Laser beam was scanned over the 5 × 5 mm surface area with different steps along y-axes. Structural and compositional characterisation was done by auger electron spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. Laser processing at lower fluence caused only oxidation of the top Ti layer, despite of the number of applied laser pulses. Interlayer mixing was not observed. Application of laser pulses at fluence of 0.11 J cm−2caused partial and/or complete ablation of deposited layers. In partially ablated regions considerable mixing between Ti and Ta films was registered.",
journal = "Optical and Quantum Electronics",
title = "Laser induced mixing in multilayered Ti/Ta thin film structures",
volume = "50",
number = "6",
pages = "257",
doi = "10.1007/s11082-018-1525-x"
}

Obradović, M. O., Kovač, J., Petrović, S., Lazović, V. M., Salatić, B., Ciganović, J., Pjević, D. J., Milosavljević, M.,& Peruško, D.. (2018). Laser induced mixing in multilayered Ti/Ta thin film structures. in Optical and Quantum Electronics, 50(6), 257.
https://doi.org/10.1007/s11082-018-1525-x

Obradović MO, Kovač J, Petrović S, Lazović VM, Salatić B, Ciganović J, Pjević DJ, Milosavljević M, Peruško D. Laser induced mixing in multilayered Ti/Ta thin film structures. in Optical and Quantum Electronics. 2018;50(6):257.
doi:10.1007/s11082-018-1525-x .

Obradović, Marko O., Kovač, Janez, Petrović, Suzana, Lazović, Vladimir M., Salatić, Branislav, Ciganović, Jovan, Pjević, Dejan J., Milosavljević, Momir, Peruško, Davor, "Laser induced mixing in multilayered Ti/Ta thin film structures" in Optical and Quantum Electronics, 50, no. 6 (2018):257,
https://doi.org/10.1007/s11082-018-1525-x . .