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  - Rajčić, Boris
AU  - Šibalija, Tatjana
AU  - Nikolić, Vladimir M.
AU  - Čekada, Miha
AU  - Savović, Jelena
AU  - Petronić, Sanja
AU  - Milovanović, Dubravka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10659
AB  - In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.
T2  - Materials
T1  - Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process
VL  - 16
IS  - 3
SP  - 1021
DO  - 10.3390/ma16031021
ER  - 

@article{
author = "Rajčić, Boris and Šibalija, Tatjana and Nikolić, Vladimir M. and Čekada, Miha and Savović, Jelena and Petronić, Sanja and Milovanović, Dubravka",
year = "2023",
abstract = "In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.",
journal = "Materials",
title = "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process",
volume = "16",
number = "3",
pages = "1021",
doi = "10.3390/ma16031021"
}

Rajčić, B., Šibalija, T., Nikolić, V. M., Čekada, M., Savović, J., Petronić, S.,& Milovanović, D.. (2023). Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials, 16(3), 1021.
https://doi.org/10.3390/ma16031021

Rajčić B, Šibalija T, Nikolić VM, Čekada M, Savović J, Petronić S, Milovanović D. Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials. 2023;16(3):1021.
doi:10.3390/ma16031021 .

Rajčić, Boris, Šibalija, Tatjana, Nikolić, Vladimir M., Čekada, Miha, Savović, Jelena, Petronić, Sanja, Milovanović, Dubravka, "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process" in Materials, 16, no. 3 (2023):1021,
https://doi.org/10.3390/ma16031021 . .

TY  - JOUR
AU  - Milovanović, Dubravka S.
AU  - Rajčić, Boris
AU  - Petronić, Sanja
AU  - Radulović, Aleksandra
AU  - Radak, Bojan
AU  - Gaković, Biljana M.
AU  - Zamfirescu, Marian
AU  - Albu, Catalina
AU  - Savović, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10116
AB  - The surface of a titanium-based alloy Ti6Al4V was subjected to modifications by a near-IR femtosecond Ti:Sapphire laser, emitting at 775 nm pulses of 200 fs duration, in single-pulse and multi-pulse regimes, with up to 400 accumulated pulses, and pulse energies ranging from 2.5 to 250 $$\upmu $$J. The whole range of induced effects is presented, from gentle ablation and pattern occurrence to substantial crater formation. Very observable laser-induced parallel periodic surface structures are reported, appearing both within the damage spot area, with low fluences, and at the peripheries of the craters, with higher fluences—but also on crater walls, and inside the crater structures. Damage threshold fluences $$({F}_{\mathrm{th}})$$and the incubation factor $$(\zeta )$$were also determined.
T2  - European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics
T1  - Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences
VL  - 76
IS  - 1
SP  - 2
DO  - 10.1140/epjd/s10053-021-00308-z
ER  - 

@article{
author = "Milovanović, Dubravka S. and Rajčić, Boris and Petronić, Sanja and Radulović, Aleksandra and Radak, Bojan and Gaković, Biljana M. and Zamfirescu, Marian and Albu, Catalina and Savović, Jelena",
year = "2022",
abstract = "The surface of a titanium-based alloy Ti6Al4V was subjected to modifications by a near-IR femtosecond Ti:Sapphire laser, emitting at 775 nm pulses of 200 fs duration, in single-pulse and multi-pulse regimes, with up to 400 accumulated pulses, and pulse energies ranging from 2.5 to 250 $$\upmu $$J. The whole range of induced effects is presented, from gentle ablation and pattern occurrence to substantial crater formation. Very observable laser-induced parallel periodic surface structures are reported, appearing both within the damage spot area, with low fluences, and at the peripheries of the craters, with higher fluences—but also on crater walls, and inside the crater structures. Damage threshold fluences $$({F}_{\mathrm{th}})$$and the incubation factor $$(\zeta )$$were also determined.",
journal = "European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics",
title = "Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences",
volume = "76",
number = "1",
pages = "2",
doi = "10.1140/epjd/s10053-021-00308-z"
}

Milovanović, D. S., Rajčić, B., Petronić, S., Radulović, A., Radak, B., Gaković, B. M., Zamfirescu, M., Albu, C.,& Savović, J.. (2022). Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 76(1), 2.
https://doi.org/10.1140/epjd/s10053-021-00308-z

Milovanović DS, Rajčić B, Petronić S, Radulović A, Radak B, Gaković BM, Zamfirescu M, Albu C, Savović J. Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics. 2022;76(1):2.
doi:10.1140/epjd/s10053-021-00308-z .

Milovanović, Dubravka S., Rajčić, Boris, Petronić, Sanja, Radulović, Aleksandra, Radak, Bojan, Gaković, Biljana M., Zamfirescu, Marian, Albu, Catalina, Savović, Jelena, "Comprehensive ablation study of near-IR femtosecond laser action on the titanium-based alloy Ti6Al4V: morphological effects and surface structures at low and high fluences" in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 76, no. 1 (2022):2,
https://doi.org/10.1140/epjd/s10053-021-00308-z . .

TY  - JOUR
AU  - Seović, Mina
AU  - Milovanović, Dubravka
AU  - Tasić, Gvozden S.
AU  - Zdolšek, Nikola
AU  - Mitrović, Stefan
AU  - Brković, Snežana M.
AU  - Perović, Ivana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11005
AB  - The dominant problem that needs to be solved today is the issue of energy sources and how to use them, which must be ecological and sustainable - in a word, green. As the best candidate for a global solution to this problem, hydrogen produced electrolytically stood out as a green fuel with no carbon footprint. However, for a hydrogen-based economy to have a realistic and sustainable perspective in the future, it largely depends on its efficient and economically viable production that would meet the market's needs. Special attention in this paper is devoted to the influence of laser radiation on the possibility of improving the process of alkaline electrolysis for obtaining hydrogen, as well as on increasing the amount of separated hydrogen when the electrolytic cell is directly irradiated with a laser beam during the electrolysis process itself. After the experiments, it was determined that the application of direct irradiation of the electrolyte with a green laser at 532 nm wavelength significantly increases the amount of hydrogen produced and reduces the voltage of the electrolytic process, which is directly related to the increase in the energy efficiency of the overall hydrogen production process.
AB  - Dominantan problem koji danas treba rešiti je pitanje energenata i načina njihove upotrebe koji moraju biti ekološki i održivi – jednom rečju zeleni. Kao najbolji kandidat za globalno rešenje ovog problema istakao se vodonik proizveden elektolitičkim putem, kao zeleno gorivo bez ugljeničnih otisaka. Da bi ekonomija zasnovana na vodoniku imala realnu i održivu perspektivu u budućnosti, u velikoj meri zavisi od njegove efikasne i ekonomski podobne proizvodnje koja bi zadovoljila potrebe tržišta. Posebna pažnja u ovom radu posvećena je uticaju laserskog zračenja na mogućnost poboljšanja procesa alkalne elektrolize za dobijanje vodonika, kao i na povećanje količine izdvojenog vodonika pri direktnom ozračivanju elektrolitičke ćelije laserskim snopom tokom samog procesa elektrolize. Nakon izvršenih eksperimenata utvrđeno je da se primenom direktnog ozračivanja elektrolita zelenim laserom talasne dužine 532 nm u značajnoj meri povećava količina proizvedenog vodonika i smanjuje napon elektrolitičkog procesa, što je u direktnoj vezi sa povećanjem energetske efikasnosti ukupnog procesa dobijanja vodonika.
T2  - Ecologica
T1  - On the Green Path of Innovation — Hydrogen from Laser-Assisted Alkaline Electrolysis
T1  - Na zelenom putu inovacija – vodonik iz laserski potpomognute alkalne elektrolize
VL  - 29
IS  - 107
SP  - 359
EP  - 363
DO  - 10.18485/ecologica.2022.29.107.9
ER  - 

@article{
author = "Seović, Mina and Milovanović, Dubravka and Tasić, Gvozden S. and Zdolšek, Nikola and Mitrović, Stefan and Brković, Snežana M. and Perović, Ivana",
year = "2022",
abstract = "The dominant problem that needs to be solved today is the issue of energy sources and how to use them, which must be ecological and sustainable - in a word, green. As the best candidate for a global solution to this problem, hydrogen produced electrolytically stood out as a green fuel with no carbon footprint. However, for a hydrogen-based economy to have a realistic and sustainable perspective in the future, it largely depends on its efficient and economically viable production that would meet the market's needs. Special attention in this paper is devoted to the influence of laser radiation on the possibility of improving the process of alkaline electrolysis for obtaining hydrogen, as well as on increasing the amount of separated hydrogen when the electrolytic cell is directly irradiated with a laser beam during the electrolysis process itself. After the experiments, it was determined that the application of direct irradiation of the electrolyte with a green laser at 532 nm wavelength significantly increases the amount of hydrogen produced and reduces the voltage of the electrolytic process, which is directly related to the increase in the energy efficiency of the overall hydrogen production process., Dominantan problem koji danas treba rešiti je pitanje energenata i načina njihove upotrebe koji moraju biti ekološki i održivi – jednom rečju zeleni. Kao najbolji kandidat za globalno rešenje ovog problema istakao se vodonik proizveden elektolitičkim putem, kao zeleno gorivo bez ugljeničnih otisaka. Da bi ekonomija zasnovana na vodoniku imala realnu i održivu perspektivu u budućnosti, u velikoj meri zavisi od njegove efikasne i ekonomski podobne proizvodnje koja bi zadovoljila potrebe tržišta. Posebna pažnja u ovom radu posvećena je uticaju laserskog zračenja na mogućnost poboljšanja procesa alkalne elektrolize za dobijanje vodonika, kao i na povećanje količine izdvojenog vodonika pri direktnom ozračivanju elektrolitičke ćelije laserskim snopom tokom samog procesa elektrolize. Nakon izvršenih eksperimenata utvrđeno je da se primenom direktnog ozračivanja elektrolita zelenim laserom talasne dužine 532 nm u značajnoj meri povećava količina proizvedenog vodonika i smanjuje napon elektrolitičkog procesa, što je u direktnoj vezi sa povećanjem energetske efikasnosti ukupnog procesa dobijanja vodonika.",
journal = "Ecologica",
title = "On the Green Path of Innovation — Hydrogen from Laser-Assisted Alkaline Electrolysis, Na zelenom putu inovacija – vodonik iz laserski potpomognute alkalne elektrolize",
volume = "29",
number = "107",
pages = "359-363",
doi = "10.18485/ecologica.2022.29.107.9"
}

Seović, M., Milovanović, D., Tasić, G. S., Zdolšek, N., Mitrović, S., Brković, S. M.,& Perović, I.. (2022). On the Green Path of Innovation — Hydrogen from Laser-Assisted Alkaline Electrolysis. in Ecologica, 29(107), 359-363.
https://doi.org/10.18485/ecologica.2022.29.107.9

Seović M, Milovanović D, Tasić GS, Zdolšek N, Mitrović S, Brković SM, Perović I. On the Green Path of Innovation — Hydrogen from Laser-Assisted Alkaline Electrolysis. in Ecologica. 2022;29(107):359-363.
doi:10.18485/ecologica.2022.29.107.9 .

Seović, Mina, Milovanović, Dubravka, Tasić, Gvozden S., Zdolšek, Nikola, Mitrović, Stefan, Brković, Snežana M., Perović, Ivana, "On the Green Path of Innovation — Hydrogen from Laser-Assisted Alkaline Electrolysis" in Ecologica, 29, no. 107 (2022):359-363,
https://doi.org/10.18485/ecologica.2022.29.107.9 . .

TY  - JOUR
AU  - Božinović, Nevena
AU  - Rajić, Vladimir
AU  - Kisić, Danilo
AU  - Milovanović, Dubravka S.
AU  - Savović, Jelena
AU  - Petrović, Suzana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10371
AB  - In this study, the design of surface pattering with the co-existence of micrometer and nanometer features was carried out to improve the arrayed surface structures on Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayer thin films by picosecond laser processing. The novel composite structure consisted of two layers of Ti and subsurface distributed Cu and Zr layers (thickness of 10 nm) were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The changes in the composition, surface morphology, and wetting properties after laser modification was monitored by Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM–EDS), optical profilometry, and wettability measurements. It was found that laser irradiation can induce the melting of material with the formation of wrinkled periodic structures at the edges of the laser spots in both systems as a consequence of the hydrodynamic effects. Another interesting result was that the periodic structure in form of LSFL (low spatial frequency LIPSS) ripples was numerous but slightly pronounced in Ti/Cu/Zr/Ti, due to the presence of the Zr component as an ultra-thin subsurface layer, which most likely favored creating LIPSS. Such laser texturing has been used in the biomedical field as a method of developing surface topography, coated with oxides to potentially improve cell response via suitable surface wetting for a biological system.
T2  - Optical and Quantum Electronics
T1  - Laser surface texturing of Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayers thin films
VL  - 54
IS  - 9
SP  - 561
DO  - 10.1007/s11082-022-03910-6
ER  - 

@article{
author = "Božinović, Nevena and Rajić, Vladimir and Kisić, Danilo and Milovanović, Dubravka S. and Savović, Jelena and Petrović, Suzana",
year = "2022",
abstract = "In this study, the design of surface pattering with the co-existence of micrometer and nanometer features was carried out to improve the arrayed surface structures on Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayer thin films by picosecond laser processing. The novel composite structure consisted of two layers of Ti and subsurface distributed Cu and Zr layers (thickness of 10 nm) were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The changes in the composition, surface morphology, and wetting properties after laser modification was monitored by Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM–EDS), optical profilometry, and wettability measurements. It was found that laser irradiation can induce the melting of material with the formation of wrinkled periodic structures at the edges of the laser spots in both systems as a consequence of the hydrodynamic effects. Another interesting result was that the periodic structure in form of LSFL (low spatial frequency LIPSS) ripples was numerous but slightly pronounced in Ti/Cu/Zr/Ti, due to the presence of the Zr component as an ultra-thin subsurface layer, which most likely favored creating LIPSS. Such laser texturing has been used in the biomedical field as a method of developing surface topography, coated with oxides to potentially improve cell response via suitable surface wetting for a biological system.",
journal = "Optical and Quantum Electronics",
title = "Laser surface texturing of Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayers thin films",
volume = "54",
number = "9",
pages = "561",
doi = "10.1007/s11082-022-03910-6"
}

Božinović, N., Rajić, V., Kisić, D., Milovanović, D. S., Savović, J.,& Petrović, S.. (2022). Laser surface texturing of Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayers thin films. in Optical and Quantum Electronics, 54(9), 561.
https://doi.org/10.1007/s11082-022-03910-6

Božinović N, Rajić V, Kisić D, Milovanović DS, Savović J, Petrović S. Laser surface texturing of Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayers thin films. in Optical and Quantum Electronics. 2022;54(9):561.
doi:10.1007/s11082-022-03910-6 .

Božinović, Nevena, Rajić, Vladimir, Kisić, Danilo, Milovanović, Dubravka S., Savović, Jelena, Petrović, Suzana, "Laser surface texturing of Ti/Cu/Ti and Ti/Cu/Zr/Ti multilayers thin films" in Optical and Quantum Electronics, 54, no. 9 (2022):561,
https://doi.org/10.1007/s11082-022-03910-6 . .

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Danilov, Pavel A.
AU  - Kudryashov, Sergey I.
AU  - Milovanović, Dubravka S.
AU  - Radulović, Aleksandra 
AU  - Panjan, Peter
AU  - Ionin, Andrey A.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10038
AB  - Results regarding morphological and compositional changes of bimetallic thin film (BMTF), composed of aluminium (Al) and titanium (Ti) nano-layers, by single fs laser pulses, are presented. Laser irradiation was conducted in the air with focused, linearly polarized laser pulses, the duration being 300 fs, wavelength 515 nm, and pulse energy up to 1.2μJ. Effects of the variations of the pulse energy on the changes were studied. In the experiment, single pulse energy values from 0.03 to 0.08 μ J caused ablation–photomechanical spallation of the upper part of BMTF layer from the Si substrate, without ablation of the whole film. Irradiation at higher pulse energies gradually removed the whole BMTF and even a part of the Si substrate. We explained the influence of different electron–phonon dynamics, in the case of multilayered thin films composed of Al and Ti, on BMTF ablation. Damage/ablation threshold, which is minimal pulse energy/fluence sufficient for starting ablation, was calculated. Graphic abstract: [Figure not available: see fulltext.] © 2021, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics
T1  - The morphological and compositional changes of bimetallic Ti/Al thin film induced by ultra-short laser pulses
VL  - 75
IS  - 11
DO  - 10.1140/epjd/s10053-021-00292-4
ER  - 

@article{
author = "Gaković, Biljana M. and Danilov, Pavel A. and Kudryashov, Sergey I. and Milovanović, Dubravka S. and Radulović, Aleksandra  and Panjan, Peter and Ionin, Andrey A.",
year = "2021",
abstract = "Results regarding morphological and compositional changes of bimetallic thin film (BMTF), composed of aluminium (Al) and titanium (Ti) nano-layers, by single fs laser pulses, are presented. Laser irradiation was conducted in the air with focused, linearly polarized laser pulses, the duration being 300 fs, wavelength 515 nm, and pulse energy up to 1.2μJ. Effects of the variations of the pulse energy on the changes were studied. In the experiment, single pulse energy values from 0.03 to 0.08 μ J caused ablation–photomechanical spallation of the upper part of BMTF layer from the Si substrate, without ablation of the whole film. Irradiation at higher pulse energies gradually removed the whole BMTF and even a part of the Si substrate. We explained the influence of different electron–phonon dynamics, in the case of multilayered thin films composed of Al and Ti, on BMTF ablation. Damage/ablation threshold, which is minimal pulse energy/fluence sufficient for starting ablation, was calculated. Graphic abstract: [Figure not available: see fulltext.] © 2021, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics",
title = "The morphological and compositional changes of bimetallic Ti/Al thin film induced by ultra-short laser pulses",
volume = "75",
number = "11",
doi = "10.1140/epjd/s10053-021-00292-4"
}

Gaković, B. M., Danilov, P. A., Kudryashov, S. I., Milovanović, D. S., Radulović, A., Panjan, P.,& Ionin, A. A.. (2021). The morphological and compositional changes of bimetallic Ti/Al thin film induced by ultra-short laser pulses. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 75(11).
https://doi.org/10.1140/epjd/s10053-021-00292-4

Gaković BM, Danilov PA, Kudryashov SI, Milovanović DS, Radulović A, Panjan P, Ionin AA. The morphological and compositional changes of bimetallic Ti/Al thin film induced by ultra-short laser pulses. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics. 2021;75(11).
doi:10.1140/epjd/s10053-021-00292-4 .

Gaković, Biljana M., Danilov, Pavel A., Kudryashov, Sergey I., Milovanović, Dubravka S., Radulović, Aleksandra , Panjan, Peter, Ionin, Andrey A., "The morphological and compositional changes of bimetallic Ti/Al thin film induced by ultra-short laser pulses" in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 75, no. 11 (2021),
https://doi.org/10.1140/epjd/s10053-021-00292-4 . .

TY  - JOUR
AU  - Kuzmanović, Miroslav M.
AU  - Stancalie, Andrei
AU  - Milovanović, Dubravka S.
AU  - Staicu, Angela
AU  - Damjanović-Vasilić, Ljiljana S.
AU  - Ranković, Dragan
AU  - Savović, Jelena
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9644
AB  - The aim of this study was to demonstrate the potential of Laser-Induced Breakdown Spectroscopy (LIBS) in the analysis of pottery shards, which are commonly the most abundant artefacts recovered at archaeological sites. The analytical capability of LIBS in identification of elements characteristic to inorganic pigments used for decoration was assessed. Based on the specific elements detected in the LIBS spectra of glazes, correlations between the elemental composition of the glaze and the colours of the glazed surface were established. The results were in accordance with the previously reported Energy Dispersive X-ray Fluorescence (EDXRF) and Raman analyses of some of the samples, and with the presently performed XRF analysis. Two important parameters for plasma characterization, temperature and electron number density, were estimated from the spectral data. A potential use of LIBS for depth profiling was also investigated by analysing the silicon to aluminium intensity ratio as a function of the number of laser shots applied. Profilometry analysis of the damages created on the glazed surfaces by laser shots was used to estimate the average ablation depth and ablated mass.
T2  - Optics & Laser Technology
T1  - Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy
VL  - 134
SP  - 106599
DO  - 10.1016/j.optlastec.2020.106599
ER  - 

@article{
author = "Kuzmanović, Miroslav M. and Stancalie, Andrei and Milovanović, Dubravka S. and Staicu, Angela and Damjanović-Vasilić, Ljiljana S. and Ranković, Dragan and Savović, Jelena",
year = "2021",
abstract = "The aim of this study was to demonstrate the potential of Laser-Induced Breakdown Spectroscopy (LIBS) in the analysis of pottery shards, which are commonly the most abundant artefacts recovered at archaeological sites. The analytical capability of LIBS in identification of elements characteristic to inorganic pigments used for decoration was assessed. Based on the specific elements detected in the LIBS spectra of glazes, correlations between the elemental composition of the glaze and the colours of the glazed surface were established. The results were in accordance with the previously reported Energy Dispersive X-ray Fluorescence (EDXRF) and Raman analyses of some of the samples, and with the presently performed XRF analysis. Two important parameters for plasma characterization, temperature and electron number density, were estimated from the spectral data. A potential use of LIBS for depth profiling was also investigated by analysing the silicon to aluminium intensity ratio as a function of the number of laser shots applied. Profilometry analysis of the damages created on the glazed surfaces by laser shots was used to estimate the average ablation depth and ablated mass.",
journal = "Optics & Laser Technology",
title = "Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy",
volume = "134",
pages = "106599",
doi = "10.1016/j.optlastec.2020.106599"
}

Kuzmanović, M. M., Stancalie, A., Milovanović, D. S., Staicu, A., Damjanović-Vasilić, L. S., Ranković, D.,& Savović, J.. (2021). Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy. in Optics & Laser Technology, 134, 106599.
https://doi.org/10.1016/j.optlastec.2020.106599

Kuzmanović MM, Stancalie A, Milovanović DS, Staicu A, Damjanović-Vasilić LS, Ranković D, Savović J. Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy. in Optics & Laser Technology. 2021;134:106599.
doi:10.1016/j.optlastec.2020.106599 .

Kuzmanović, Miroslav M., Stancalie, Andrei, Milovanović, Dubravka S., Staicu, Angela, Damjanović-Vasilić, Ljiljana S., Ranković, Dragan, Savović, Jelena, "Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy" in Optics & Laser Technology, 134 (2021):106599,
https://doi.org/10.1016/j.optlastec.2020.106599 . .

TY  - CONF
AU  - Božinović, Nevena
AU  - Milovanović, Dubravka S.
AU  - Rajić, Vladimir
AU  - Rakočević, Lazar
AU  - Savović, Jelena
AU  - Petrović, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10913
AB  - Design of surface patterning with the co-existence of micro- and nanoscale features by picosecond laser processing is investigated in order to improve cell integration. New biomedical Ti alloys with a high concentration of β-stabilizer elements (zirconium) are developed, as potential solutions to the mismatch between the Young’s modulus of the implant and the surrounding hard tissues. On the other hand, in order to enhance the tribological and antimicrobial properties of Ti/Zr coating, a novel titanium-copper and titanium-copper-zirconium thin film systems were designed in this work. Novel composite structure composed of subsurface distributed Cu and Zr layers (thickness of 10 nm), with satisfying mechanical properties and moderate biocompatibility, were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The multilayer thin films were irradiated by focused linearly p-polarised picosecond pulses with follow characteristics: repetition rate of 10 Hz, pulse duration equal to 150 ps, central wavelength of 1064 nm and 120 µm Gaussian spot diameter. The changes of the composition and surface morphology in the Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films were monitored by X-ray photoelectron spectroscopy (XPS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface [1,2]. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material. XPS analysis revealed that laser modification was induced intermixing between the Cu and Zr layers, but also with dominant Ti component. During the laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films, delivered energy was sufficient to cause solid-state reactions, the formation of alloy between components. Laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films is used to create the arrayed surface structure, such as laser-induced periodic surface structures (LIPSS) and at the same time to induce mixing of components inside the thin film structures, as well as the formation of ultrathin oxide layer at the laser-treated surfaces [3,4]. Laser surface patterns are organized as networks and parallel lines, where lines formed of LIPSS are wide up to 100 μm and distance between lines are less than 300 μm. The average periodicity between LIPSSs was about 900 nm, which would correspond to the formation of low spatial frequency LIPSS (LSFL).
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films
SP  - 153
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10913
ER  - 

@conference{
author = "Božinović, Nevena and Milovanović, Dubravka S. and Rajić, Vladimir and Rakočević, Lazar and Savović, Jelena and Petrović, Suzana",
year = "2021",
abstract = "Design of surface patterning with the co-existence of micro- and nanoscale features by picosecond laser processing is investigated in order to improve cell integration. New biomedical Ti alloys with a high concentration of β-stabilizer elements (zirconium) are developed, as potential solutions to the mismatch between the Young’s modulus of the implant and the surrounding hard tissues. On the other hand, in order to enhance the tribological and antimicrobial properties of Ti/Zr coating, a novel titanium-copper and titanium-copper-zirconium thin film systems were designed in this work. Novel composite structure composed of subsurface distributed Cu and Zr layers (thickness of 10 nm), with satisfying mechanical properties and moderate biocompatibility, were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The multilayer thin films were irradiated by focused linearly p-polarised picosecond pulses with follow characteristics: repetition rate of 10 Hz, pulse duration equal to 150 ps, central wavelength of 1064 nm and 120 µm Gaussian spot diameter. The changes of the composition and surface morphology in the Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films were monitored by X-ray photoelectron spectroscopy (XPS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface [1,2]. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material. XPS analysis revealed that laser modification was induced intermixing between the Cu and Zr layers, but also with dominant Ti component. During the laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films, delivered energy was sufficient to cause solid-state reactions, the formation of alloy between components. Laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films is used to create the arrayed surface structure, such as laser-induced periodic surface structures (LIPSS) and at the same time to induce mixing of components inside the thin film structures, as well as the formation of ultrathin oxide layer at the laser-treated surfaces [3,4]. Laser surface patterns are organized as networks and parallel lines, where lines formed of LIPSS are wide up to 100 μm and distance between lines are less than 300 μm. The average periodicity between LIPSSs was about 900 nm, which would correspond to the formation of low spatial frequency LIPSS (LSFL).",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films",
pages = "153",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10913"
}

Božinović, N., Milovanović, D. S., Rajić, V., Rakočević, L., Savović, J.,& Petrović, S.. (2021). Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 153.
https://hdl.handle.net/21.15107/rcub_vinar_10913

Božinović N, Milovanović DS, Rajić V, Rakočević L, Savović J, Petrović S. Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:153.
https://hdl.handle.net/21.15107/rcub_vinar_10913 .

Božinović, Nevena, Milovanović, Dubravka S., Rajić, Vladimir, Rakočević, Lazar, Savović, Jelena, Petrović, Suzana, "Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):153,
https://hdl.handle.net/21.15107/rcub_vinar_10913 .

TY  - JOUR
AU  - Smirnov, Nikita A.
AU  - Kudryashov, Sergey I.
AU  - Danilov, Pavel A.
AU  - Rudenko, Andrey A.
AU  - Gaković, Biljana M.
AU  - Milovanović, Dubravka S.
AU  - Ionin, Andrey A.
AU  - Nastulyavichus, Alena A.
AU  - Umanskaya, S. F.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8412
AB  - Single-pulse microprocessing of a steel surface with a variable pulse width (0.3-12.3 ps) and a wavelength of 515 nm was performed. The morphology of the craters was visualized by a scanning electron microscope and an optical profilometer. The nonmonotonic behavior of ablation thresholds with a minimum at ≈1.5 ps, due to achieving the electron-phonon relaxation time of the absorbed energy in the steel was revealed. It is shown that, with an increase in the pulse width in the considered width range, the efficiency of the ablation decreases by a factor of 2, which is explained by the partial transition from the phase explosion to the surface evaporation. © 2019 Astro Ltd.
T2  - Laser Physics Letters
T1  - Microprocessing of a steel surface by single pulses of variable width
VL  - 16
IS  - 5
SP  - 056002
DO  - 10.1088/1612-202X/ab0c85
ER  - 

@article{
author = "Smirnov, Nikita A. and Kudryashov, Sergey I. and Danilov, Pavel A. and Rudenko, Andrey A. and Gaković, Biljana M. and Milovanović, Dubravka S. and Ionin, Andrey A. and Nastulyavichus, Alena A. and Umanskaya, S. F.",
year = "2019",
abstract = "Single-pulse microprocessing of a steel surface with a variable pulse width (0.3-12.3 ps) and a wavelength of 515 nm was performed. The morphology of the craters was visualized by a scanning electron microscope and an optical profilometer. The nonmonotonic behavior of ablation thresholds with a minimum at ≈1.5 ps, due to achieving the electron-phonon relaxation time of the absorbed energy in the steel was revealed. It is shown that, with an increase in the pulse width in the considered width range, the efficiency of the ablation decreases by a factor of 2, which is explained by the partial transition from the phase explosion to the surface evaporation. © 2019 Astro Ltd.",
journal = "Laser Physics Letters",
title = "Microprocessing of a steel surface by single pulses of variable width",
volume = "16",
number = "5",
pages = "056002",
doi = "10.1088/1612-202X/ab0c85"
}

Smirnov, N. A., Kudryashov, S. I., Danilov, P. A., Rudenko, A. A., Gaković, B. M., Milovanović, D. S., Ionin, A. A., Nastulyavichus, A. A.,& Umanskaya, S. F.. (2019). Microprocessing of a steel surface by single pulses of variable width. in Laser Physics Letters, 16(5), 056002.
https://doi.org/10.1088/1612-202X/ab0c85

Smirnov NA, Kudryashov SI, Danilov PA, Rudenko AA, Gaković BM, Milovanović DS, Ionin AA, Nastulyavichus AA, Umanskaya SF. Microprocessing of a steel surface by single pulses of variable width. in Laser Physics Letters. 2019;16(5):056002.
doi:10.1088/1612-202X/ab0c85 .

Smirnov, Nikita A., Kudryashov, Sergey I., Danilov, Pavel A., Rudenko, Andrey A., Gaković, Biljana M., Milovanović, Dubravka S., Ionin, Andrey A., Nastulyavichus, Alena A., Umanskaya, S. F., "Microprocessing of a steel surface by single pulses of variable width" in Laser Physics Letters, 16, no. 5 (2019):056002,
https://doi.org/10.1088/1612-202X/ab0c85 . .

TY  - JOUR
AU  - Kudryashov, Sergey I.
AU  - Smirnov, Nikita A.
AU  - Gaković, Biljana M.
AU  - Milovanović, Dubravka S.
AU  - Bezhanov, Stanislav G.
AU  - Uryupin, Sergey A.
AU  - Ionin, Andrey A.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8535
AB  - The dependences of the depth of single-pulse ablation of the steel surface on the energy density of ultrashort laser pulses (0.3–12 ps) with a wavelength of 515 nm have the form different from the usual logarithmic one for linear absorption of radiation. Since the density of states of free conduction electrons in the s band is low, and the d band of strongly bound electrons with a high density of states is located around the Fermi level, these dependences have been approximated within the two-photon absorption model. The two-photon absorption coefficient increases almost linearly with the duration of laser pulses, which indicates the saturation of absorption and allows estimating the corresponding parameters of the electronic subsystem. © 2019, Pleiades Publishing, Inc.
T2  - JETP Letters
T1  - Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses
VL  - 110
IS  - 2
SP  - 107
EP  - 110
DO  - 10.1134/S0021364019140091
ER  - 

@article{
author = "Kudryashov, Sergey I. and Smirnov, Nikita A. and Gaković, Biljana M. and Milovanović, Dubravka S. and Bezhanov, Stanislav G. and Uryupin, Sergey A. and Ionin, Andrey A.",
year = "2019",
abstract = "The dependences of the depth of single-pulse ablation of the steel surface on the energy density of ultrashort laser pulses (0.3–12 ps) with a wavelength of 515 nm have the form different from the usual logarithmic one for linear absorption of radiation. Since the density of states of free conduction electrons in the s band is low, and the d band of strongly bound electrons with a high density of states is located around the Fermi level, these dependences have been approximated within the two-photon absorption model. The two-photon absorption coefficient increases almost linearly with the duration of laser pulses, which indicates the saturation of absorption and allows estimating the corresponding parameters of the electronic subsystem. © 2019, Pleiades Publishing, Inc.",
journal = "JETP Letters",
title = "Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses",
volume = "110",
number = "2",
pages = "107-110",
doi = "10.1134/S0021364019140091"
}

Kudryashov, S. I., Smirnov, N. A., Gaković, B. M., Milovanović, D. S., Bezhanov, S. G., Uryupin, S. A.,& Ionin, A. A.. (2019). Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses. in JETP Letters, 110(2), 107-110.
https://doi.org/10.1134/S0021364019140091

Kudryashov SI, Smirnov NA, Gaković BM, Milovanović DS, Bezhanov SG, Uryupin SA, Ionin AA. Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses. in JETP Letters. 2019;110(2):107-110.
doi:10.1134/S0021364019140091 .

Kudryashov, Sergey I., Smirnov, Nikita A., Gaković, Biljana M., Milovanović, Dubravka S., Bezhanov, Stanislav G., Uryupin, Sergey A., Ionin, Andrey A., "Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses" in JETP Letters, 110, no. 2 (2019):107-110,
https://doi.org/10.1134/S0021364019140091 . .

TY  - CONF
AU  - Samolov, Aleksandra
AU  - Savić, Jasmina
AU  - Rajčić, Boris
AU  - Milovanović, Dubravka
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11783
AB  - Diffuse reflection as a feature of dyed coatings is important characteristic regarding camouflage protection analysis. In our laboratory practice, the need for diffuse reflection analysis of textile materials has appeared, recently. Therefore, astm e903-12 [1] method has been modified in order to be applicable for this type of materials. The measurements of diffuse reflection were conducted, in the military technical institute laboratory for textile, leather and shoes examination in belgrade, serbia, using the uv/vis/nir spectrophotometer uv 3600 from a japanese manufacturer shimadzu with an integrating sphere within wavelength area from 650 nm to 1000 nm. For the purpose of results analyses, uv probe programme package [2] was used. 10 measurements of spectralon (manufactured by labsphere®), which is used as a certified reflectance standard, were performed and obtained standard deviation was 0.07 %. Then control sample, a piece of a standard military cloth of serbian army, which has five color shades (light green, beige green, dark green, brown and black) was tested. Standard deviations were in range from 0.09% for black tone on 650 nm wavelength to 2.0% for light green tone on 1000 nm. The combine uncertainty for the method was ±2.0 %, which coincides with the above mentioned astm standard. In the end, comparative measurements of the same control sample for all five shades were performed in the “vinca” institute for nuclear sciences, department for physical chemistry, university of belgrade on lambda 35 perkin-elmer uv/vis/nir spectrophotometer. Moreover, the z score was calculated as well, and its values ranged from -0.71 to +0.71, which was satisfying regarding interlaboratory measurements rules. Overall results showed that this method is applicable for diffuse reflection measurements of textile materials.
C3  - AUTEX2019 : 19th World Textile Conference on Textiles at the Crossroads, the book of abstracts; June 11-15, Ghent, Belgium
T1  - Validation Estimation of Diffuse Reflection Method for Textile Materials Analysis
SP  - 217
EP  - 217
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11783
ER  - 

@conference{
author = "Samolov, Aleksandra and Savić, Jasmina and Rajčić, Boris and Milovanović, Dubravka",
year = "2019",
abstract = "Diffuse reflection as a feature of dyed coatings is important characteristic regarding camouflage protection analysis. In our laboratory practice, the need for diffuse reflection analysis of textile materials has appeared, recently. Therefore, astm e903-12 [1] method has been modified in order to be applicable for this type of materials. The measurements of diffuse reflection were conducted, in the military technical institute laboratory for textile, leather and shoes examination in belgrade, serbia, using the uv/vis/nir spectrophotometer uv 3600 from a japanese manufacturer shimadzu with an integrating sphere within wavelength area from 650 nm to 1000 nm. For the purpose of results analyses, uv probe programme package [2] was used. 10 measurements of spectralon (manufactured by labsphere®), which is used as a certified reflectance standard, were performed and obtained standard deviation was 0.07 %. Then control sample, a piece of a standard military cloth of serbian army, which has five color shades (light green, beige green, dark green, brown and black) was tested. Standard deviations were in range from 0.09% for black tone on 650 nm wavelength to 2.0% for light green tone on 1000 nm. The combine uncertainty for the method was ±2.0 %, which coincides with the above mentioned astm standard. In the end, comparative measurements of the same control sample for all five shades were performed in the “vinca” institute for nuclear sciences, department for physical chemistry, university of belgrade on lambda 35 perkin-elmer uv/vis/nir spectrophotometer. Moreover, the z score was calculated as well, and its values ranged from -0.71 to +0.71, which was satisfying regarding interlaboratory measurements rules. Overall results showed that this method is applicable for diffuse reflection measurements of textile materials.",
journal = "AUTEX2019 : 19th World Textile Conference on Textiles at the Crossroads, the book of abstracts; June 11-15, Ghent, Belgium",
title = "Validation Estimation of Diffuse Reflection Method for Textile Materials Analysis",
pages = "217-217",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11783"
}

Samolov, A., Savić, J., Rajčić, B.,& Milovanović, D.. (2019). Validation Estimation of Diffuse Reflection Method for Textile Materials Analysis. in AUTEX2019 : 19th World Textile Conference on Textiles at the Crossroads, the book of abstracts; June 11-15, Ghent, Belgium, 217-217.
https://hdl.handle.net/21.15107/rcub_vinar_11783

Samolov A, Savić J, Rajčić B, Milovanović D. Validation Estimation of Diffuse Reflection Method for Textile Materials Analysis. in AUTEX2019 : 19th World Textile Conference on Textiles at the Crossroads, the book of abstracts; June 11-15, Ghent, Belgium. 2019;:217-217.
https://hdl.handle.net/21.15107/rcub_vinar_11783 .

Samolov, Aleksandra, Savić, Jasmina, Rajčić, Boris, Milovanović, Dubravka, "Validation Estimation of Diffuse Reflection Method for Textile Materials Analysis" in AUTEX2019 : 19th World Textile Conference on Textiles at the Crossroads, the book of abstracts; June 11-15, Ghent, Belgium (2019):217-217,
https://hdl.handle.net/21.15107/rcub_vinar_11783 .

TY  - JOUR
AU  - Birdeanu, Mihaela
AU  - Birdeanu, Aurel Valentin
AU  - Vaida, Mirela
AU  - Milovanović, Dubravka S.
AU  - Lascu, Anca
AU  - Fagadar-Cosma, Eugenia
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8457
AB  - The anticorrosive properties of single and sandwich layers obtained by pulsed laser deposition (PLD) of the pseudo-binary oxide ZnTa2O6 and zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) on steel were investigated. Intercalated thin layers made by PLD technique from the pseudo-binary oxide ZnTa2O6 and zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) are expected to self-assemble into ordered nanoparticles and to exhibit uniformity and adherence, offering novel anticorrosive properties. The corrosion tests were performed in solution 0.1 mol l-1 NaCl. The best corrosion resistance was exhibited by the steel electrode modified with ZnTPyP/ZnTa2O6 deposited layers, i.e. 66.64% inhibition efficiency. © 2019 IOP Publishing Ltd.
T2  - Physica Scripta
T1  - Corrosion behaviour of ZnTa2O6 pseudo-binary oxide, zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) and hybrid ZnTa2O6/ZnTPyP layers deposited by PLD
VL  - 94
IS  - 7
SP  - 075702
DO  - 10.1088/1402-4896/ab0857
ER  - 

@article{
author = "Birdeanu, Mihaela and Birdeanu, Aurel Valentin and Vaida, Mirela and Milovanović, Dubravka S. and Lascu, Anca and Fagadar-Cosma, Eugenia",
year = "2019",
abstract = "The anticorrosive properties of single and sandwich layers obtained by pulsed laser deposition (PLD) of the pseudo-binary oxide ZnTa2O6 and zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) on steel were investigated. Intercalated thin layers made by PLD technique from the pseudo-binary oxide ZnTa2O6 and zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) are expected to self-assemble into ordered nanoparticles and to exhibit uniformity and adherence, offering novel anticorrosive properties. The corrosion tests were performed in solution 0.1 mol l-1 NaCl. The best corrosion resistance was exhibited by the steel electrode modified with ZnTPyP/ZnTa2O6 deposited layers, i.e. 66.64% inhibition efficiency. © 2019 IOP Publishing Ltd.",
journal = "Physica Scripta",
title = "Corrosion behaviour of ZnTa2O6 pseudo-binary oxide, zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) and hybrid ZnTa2O6/ZnTPyP layers deposited by PLD",
volume = "94",
number = "7",
pages = "075702",
doi = "10.1088/1402-4896/ab0857"
}

Birdeanu, M., Birdeanu, A. V., Vaida, M., Milovanović, D. S., Lascu, A.,& Fagadar-Cosma, E.. (2019). Corrosion behaviour of ZnTa2O6 pseudo-binary oxide, zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) and hybrid ZnTa2O6/ZnTPyP layers deposited by PLD. in Physica Scripta, 94(7), 075702.
https://doi.org/10.1088/1402-4896/ab0857

Birdeanu M, Birdeanu AV, Vaida M, Milovanović DS, Lascu A, Fagadar-Cosma E. Corrosion behaviour of ZnTa2O6 pseudo-binary oxide, zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) and hybrid ZnTa2O6/ZnTPyP layers deposited by PLD. in Physica Scripta. 2019;94(7):075702.
doi:10.1088/1402-4896/ab0857 .

Birdeanu, Mihaela, Birdeanu, Aurel Valentin, Vaida, Mirela, Milovanović, Dubravka S., Lascu, Anca, Fagadar-Cosma, Eugenia, "Corrosion behaviour of ZnTa2O6 pseudo-binary oxide, zinc meso-tetra(4-pyridyl)porphyrin (ZnTPyP) and hybrid ZnTa2O6/ZnTPyP layers deposited by PLD" in Physica Scripta, 94, no. 7 (2019):075702,
https://doi.org/10.1088/1402-4896/ab0857 . .

TY  - CONF
AU  - Tošić, Miloš
AU  - Nikolić, Željka
AU  - Georgijević, Jelena M.
AU  - Brdarić, Tanja
AU  - Tasić, Gvozden
AU  - Nikolić, Vladimir
AU  - Milovanović, Dubravka
AU  - Marčeta Kaninski, Milica
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12695
AB  - BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.
PB  - Belgrade : Serbian Chemical Society
C3  - ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
T1  - Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace
T1  - Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID
SP  - 203
EP  - 204
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12695
ER  - 

@conference{
author = "Tošić, Miloš and Nikolić, Željka and Georgijević, Jelena M. and Brdarić, Tanja and Tasić, Gvozden and Nikolić, Vladimir and Milovanović, Dubravka and Marčeta Kaninski, Milica",
year = "2018",
abstract = "BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts",
title = "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace, Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID",
pages = "203-204",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12695"
}

Tošić, M., Nikolić, Ž., Georgijević, J. M., Brdarić, T., Tasić, G., Nikolić, V., Milovanović, D.,& Marčeta Kaninski, M.. (2018). Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
Belgrade : Serbian Chemical Society., 203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695

Tošić M, Nikolić Ž, Georgijević JM, Brdarić T, Tasić G, Nikolić V, Milovanović D, Marčeta Kaninski M. Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts. 2018;:203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695 .

Tošić, Miloš, Nikolić, Željka, Georgijević, Jelena M., Brdarić, Tanja, Tasić, Gvozden, Nikolić, Vladimir, Milovanović, Dubravka, Marčeta Kaninski, Milica, "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace" in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts (2018):203-204,
https://hdl.handle.net/21.15107/rcub_vinar_12695 .

TY  - JOUR
AU  - Kudryashov, Sergey I.
AU  - Gaković, Biljana M.
AU  - Danilov, Pavel A.
AU  - Petrović, Suzana
AU  - Milovanović, Dubravka S.
AU  - Rudenko, Andrey A.
AU  - Ionin, Andrey A.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1917
AB  - Single-shot femtosecond laser ablation of Ti(Al/Ti)(5) and (Ni/Ti)(5) films on silicon substrates was studied as a function of laser fluence by means of scanning electron microscopy, energy-dispersive x-ray spectroscopy, and optical profilometry. Ablation occurs as gradual threshold-like selective removal of a few top layers at lower fluences and rather continuous removal at higher fluences, exponentially increasing versus ablated depth, with the final complete (through) ablation of the entire films. The observed selective rupture at the different internal interfaces was related to thermomechanically and chemically enhanced (interface-facilitated) explosive boiling, with the corresponding energy deposition provided by cascaded heat transfer in the poorly conducting Ti and Ni, and highly conducting Al layers and the interfacial thermal (Kapitza) resistance effect. Published by AIP Publishing.
T2  - Applied Physics Letters
T1  - Single-shot selective femtosecond laser ablation of multi-layered Ti/Al and Ni/Ti films: Cascaded heat conduction and interfacial thermal effects
VL  - 112
IS  - 2
DO  - 10.1063/1.5010793
ER  - 

@article{
author = "Kudryashov, Sergey I. and Gaković, Biljana M. and Danilov, Pavel A. and Petrović, Suzana and Milovanović, Dubravka S. and Rudenko, Andrey A. and Ionin, Andrey A.",
year = "2018",
abstract = "Single-shot femtosecond laser ablation of Ti(Al/Ti)(5) and (Ni/Ti)(5) films on silicon substrates was studied as a function of laser fluence by means of scanning electron microscopy, energy-dispersive x-ray spectroscopy, and optical profilometry. Ablation occurs as gradual threshold-like selective removal of a few top layers at lower fluences and rather continuous removal at higher fluences, exponentially increasing versus ablated depth, with the final complete (through) ablation of the entire films. The observed selective rupture at the different internal interfaces was related to thermomechanically and chemically enhanced (interface-facilitated) explosive boiling, with the corresponding energy deposition provided by cascaded heat transfer in the poorly conducting Ti and Ni, and highly conducting Al layers and the interfacial thermal (Kapitza) resistance effect. Published by AIP Publishing.",
journal = "Applied Physics Letters",
title = "Single-shot selective femtosecond laser ablation of multi-layered Ti/Al and Ni/Ti films: Cascaded heat conduction and interfacial thermal effects",
volume = "112",
number = "2",
doi = "10.1063/1.5010793"
}

Kudryashov, S. I., Gaković, B. M., Danilov, P. A., Petrović, S., Milovanović, D. S., Rudenko, A. A.,& Ionin, A. A.. (2018). Single-shot selective femtosecond laser ablation of multi-layered Ti/Al and Ni/Ti films: Cascaded heat conduction and interfacial thermal effects. in Applied Physics Letters, 112(2).
https://doi.org/10.1063/1.5010793

Kudryashov SI, Gaković BM, Danilov PA, Petrović S, Milovanović DS, Rudenko AA, Ionin AA. Single-shot selective femtosecond laser ablation of multi-layered Ti/Al and Ni/Ti films: Cascaded heat conduction and interfacial thermal effects. in Applied Physics Letters. 2018;112(2).
doi:10.1063/1.5010793 .

Kudryashov, Sergey I., Gaković, Biljana M., Danilov, Pavel A., Petrović, Suzana, Milovanović, Dubravka S., Rudenko, Andrey A., Ionin, Andrey A., "Single-shot selective femtosecond laser ablation of multi-layered Ti/Al and Ni/Ti films: Cascaded heat conduction and interfacial thermal effects" in Applied Physics Letters, 112, no. 2 (2018),
https://doi.org/10.1063/1.5010793 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Radak, Bojan
AU  - Milovanović, Dubravka S.
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7809
AB  - Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.
T2  - The European Physical Journal Plus
T1  - Laser-based optical techniques for the detection of chemical agents
VL  - 133
IS  - 7
SP  - 268
DO  - 10.1140/epjp/i2018-12145-4
ER  - 

@article{
author = "Trtica, Milan and Radak, Bojan and Milovanović, Dubravka S. and Kuzmanović, Miroslav M. and Savović, Jelena",
year = "2018",
abstract = "Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.",
journal = "The European Physical Journal Plus",
title = "Laser-based optical techniques for the detection of chemical agents",
volume = "133",
number = "7",
pages = "268",
doi = "10.1140/epjp/i2018-12145-4"
}

Trtica, M., Radak, B., Milovanović, D. S., Kuzmanović, M. M.,& Savović, J.. (2018). Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus, 133(7), 268.
https://doi.org/10.1140/epjp/i2018-12145-4

Trtica M, Radak B, Milovanović DS, Kuzmanović MM, Savović J. Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus. 2018;133(7):268.
doi:10.1140/epjp/i2018-12145-4 .

Trtica, Milan, Radak, Bojan, Milovanović, Dubravka S., Kuzmanović, Miroslav M., Savović, Jelena, "Laser-based optical techniques for the detection of chemical agents" in The European Physical Journal Plus, 133, no. 7 (2018):268,
https://doi.org/10.1140/epjp/i2018-12145-4 . .

TY  - CONF
AU  - Birdeanu, Aurel Valentin
AU  - Vaida, Mirela
AU  - Perianu, Ion Aurel
AU  - Milovanović, Dubravka S.
AU  - Petronić, Sanja Z.
AU  - Birdeanu, Mihaela
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7851
AB  - Hydrothermally obtained Mg3Ta208 pseudo-binary nanomaterial from MgO and Ta2O5 (3:1) precursors was deposited using the pulsed laser deposition (PLD) technique on carbon steel disks. The PLD main processes parameters, i.e. the pulse energy and the deposition time were varied in order to determine the combination that ensures the best corrosion inhibition. Morphological investigations were carried out (scanning electron microscopy and atomic force microscopy). The anticorrosive properties of the deposited layers were studied in 0.3 M NaCI saline solution. The best anticorrosive protection was observed in the case of the deposited layers on carbon steel disk using the lower energy, i.e. 10mJ for a deposition time of 60s, i.e. 61.94 % inhibition efficiency.
C3  - NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application
T1  - Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks
VL  - 2017-October
SP  - 366
EP  - 371
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7851
ER  - 

@conference{
author = "Birdeanu, Aurel Valentin and Vaida, Mirela and Perianu, Ion Aurel and Milovanović, Dubravka S. and Petronić, Sanja Z. and Birdeanu, Mihaela",
year = "2018",
abstract = "Hydrothermally obtained Mg3Ta208 pseudo-binary nanomaterial from MgO and Ta2O5 (3:1) precursors was deposited using the pulsed laser deposition (PLD) technique on carbon steel disks. The PLD main processes parameters, i.e. the pulse energy and the deposition time were varied in order to determine the combination that ensures the best corrosion inhibition. Morphological investigations were carried out (scanning electron microscopy and atomic force microscopy). The anticorrosive properties of the deposited layers were studied in 0.3 M NaCI saline solution. The best anticorrosive protection was observed in the case of the deposited layers on carbon steel disk using the lower energy, i.e. 10mJ for a deposition time of 60s, i.e. 61.94 % inhibition efficiency.",
journal = "NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application",
title = "Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks",
volume = "2017-October",
pages = "366-371",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7851"
}

Birdeanu, A. V., Vaida, M., Perianu, I. A., Milovanović, D. S., Petronić, S. Z.,& Birdeanu, M.. (2018). Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October, 366-371.
https://hdl.handle.net/21.15107/rcub_vinar_7851

Birdeanu AV, Vaida M, Perianu IA, Milovanović DS, Petronić SZ, Birdeanu M. Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks. in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application. 2018;2017-October:366-371.
https://hdl.handle.net/21.15107/rcub_vinar_7851 .

Birdeanu, Aurel Valentin, Vaida, Mirela, Perianu, Ion Aurel, Milovanović, Dubravka S., Petronić, Sanja Z., Birdeanu, Mihaela, "Corrosion behaviour of Mg3Ta2O8 pseudo-binary oxide deposition by pulsed laser deposition on carbon steel disks" in NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application, 2017-October (2018):366-371,
https://hdl.handle.net/21.15107/rcub_vinar_7851 .

TY  - JOUR
AU  - Aćimović, Danka D.
AU  - Nikolić, Željka
AU  - Tošić, Miloš S.
AU  - Milovanović, Dubravka S.
AU  - Nikolić, Vladimir M.
AU  - Brdarić, Tanja
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1390
AB  - Human exposure to persistent organic contaminants, from building materials, negatively affects peoples health and overall quality of life. This paper presents the validation and uncertainty assessment of the analytical method, developed for the simultaneous determination of 16 EPA polycyclic aromatic hydrocarbons (PAHs) in solid-solid concrete by ultra-performance liquid chromatography with photo diode-array detector. Linearity of calibration curves was good over the whole range of calibration. Limits of detection varied between 0.2 and 2.9 mu gkg(-1). The accuracy in terms of recovery of the validated method is within the range from 54 to 106%. The developed method proved to be appropriate for analysis of PAHs and can be used for the quality control testing of concrete during the construction of new buildings, the old residences and related buildings associated with sick-building syndrome. In addition, this is the first reported method described for the evaluation of PAHs in solid-solid concrete. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Hazardous Materials
T1  - Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete
VL  - 325
SP  - 271
EP  - 278
DO  - 10.1016/j.jhazmat.2016.12.008
ER  - 

@article{
author = "Aćimović, Danka D. and Nikolić, Željka and Tošić, Miloš S. and Milovanović, Dubravka S. and Nikolić, Vladimir M. and Brdarić, Tanja and Marčeta Kaninski, Milica",
year = "2017",
abstract = "Human exposure to persistent organic contaminants, from building materials, negatively affects peoples health and overall quality of life. This paper presents the validation and uncertainty assessment of the analytical method, developed for the simultaneous determination of 16 EPA polycyclic aromatic hydrocarbons (PAHs) in solid-solid concrete by ultra-performance liquid chromatography with photo diode-array detector. Linearity of calibration curves was good over the whole range of calibration. Limits of detection varied between 0.2 and 2.9 mu gkg(-1). The accuracy in terms of recovery of the validated method is within the range from 54 to 106%. The developed method proved to be appropriate for analysis of PAHs and can be used for the quality control testing of concrete during the construction of new buildings, the old residences and related buildings associated with sick-building syndrome. In addition, this is the first reported method described for the evaluation of PAHs in solid-solid concrete. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Hazardous Materials",
title = "Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete",
volume = "325",
pages = "271-278",
doi = "10.1016/j.jhazmat.2016.12.008"
}

Aćimović, D. D., Nikolić, Ž., Tošić, M. S., Milovanović, D. S., Nikolić, V. M., Brdarić, T.,& Marčeta Kaninski, M.. (2017). Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete. in Journal of Hazardous Materials, 325, 271-278.
https://doi.org/10.1016/j.jhazmat.2016.12.008

Aćimović DD, Nikolić Ž, Tošić MS, Milovanović DS, Nikolić VM, Brdarić T, Marčeta Kaninski M. Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete. in Journal of Hazardous Materials. 2017;325:271-278.
doi:10.1016/j.jhazmat.2016.12.008 .

Aćimović, Danka D., Nikolić, Željka, Tošić, Miloš S., Milovanović, Dubravka S., Nikolić, Vladimir M., Brdarić, Tanja, Marčeta Kaninski, Milica, "Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete" in Journal of Hazardous Materials, 325 (2017):271-278,
https://doi.org/10.1016/j.jhazmat.2016.12.008 . .

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Karić, Slavko D.
AU  - Nikolić, Željka
AU  - Tošić, Miloš S.
AU  - Tasić, Gvozden S.
AU  - Milovanović, Dubravka S.
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1399
AB  - Polycyclic aromatic hydrocarbons (PAHs) are denoted by International Agency for Research on Cancer as mutagens, teratogens and carcinogenic to humans. In 2013, Vinca Institute of Nuclear Sciences was hired to determine whether PAHs are present in significant quantities in the concrete walls of newly built residential buildings (about 15,000 m(2) of apartments), and to propose appropriate technical solution for PAH removal in this case. As PAH occurrence, determination and remediation in concrete is, to our knowledge, a completely new field, it was necessary to face a number of challenges, including lack of regulations considering contents of PAHs in concrete, investigation of the origin of PAH contamination in concrete (if established), as Well as finding feasible and non-expensive remediation method, which would be appropriate for residential space. In first part of this study, a Markedly high concentrations of 5 PAHs were detected by UPLC/PDA analysis in samples of both concrete walls and mineral oil used for coating of planks during formwork, while control concrete and mineral oil, taken from independent construction site, were taken as a reference. Such coincidence, as well as the fact that mineral oil has penetrated into the concrete which is proven by ASAP/MS analysis, pointed to the mineral oil as the most probable source of PAH contamination of the concrete. In the second part, an efficient and easy-applicable method for PAH oxidation in concrete (called FHO3AOP), using UV light, H2O2 and ozone, was presented and discussed in terms of previous literature data. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete
VL  - 312
SP  - 99
EP  - 105
DO  - 10.1016/j.cej.2016.11.117
ER  - 

@article{
author = "Nikolić, Vladimir M. and Karić, Slavko D. and Nikolić, Željka and Tošić, Miloš S. and Tasić, Gvozden S. and Milovanović, Dubravka S. and Marčeta Kaninski, Milica",
year = "2017",
abstract = "Polycyclic aromatic hydrocarbons (PAHs) are denoted by International Agency for Research on Cancer as mutagens, teratogens and carcinogenic to humans. In 2013, Vinca Institute of Nuclear Sciences was hired to determine whether PAHs are present in significant quantities in the concrete walls of newly built residential buildings (about 15,000 m(2) of apartments), and to propose appropriate technical solution for PAH removal in this case. As PAH occurrence, determination and remediation in concrete is, to our knowledge, a completely new field, it was necessary to face a number of challenges, including lack of regulations considering contents of PAHs in concrete, investigation of the origin of PAH contamination in concrete (if established), as Well as finding feasible and non-expensive remediation method, which would be appropriate for residential space. In first part of this study, a Markedly high concentrations of 5 PAHs were detected by UPLC/PDA analysis in samples of both concrete walls and mineral oil used for coating of planks during formwork, while control concrete and mineral oil, taken from independent construction site, were taken as a reference. Such coincidence, as well as the fact that mineral oil has penetrated into the concrete which is proven by ASAP/MS analysis, pointed to the mineral oil as the most probable source of PAH contamination of the concrete. In the second part, an efficient and easy-applicable method for PAH oxidation in concrete (called FHO3AOP), using UV light, H2O2 and ozone, was presented and discussed in terms of previous literature data. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete",
volume = "312",
pages = "99-105",
doi = "10.1016/j.cej.2016.11.117"
}

Nikolić, V. M., Karić, S. D., Nikolić, Ž., Tošić, M. S., Tasić, G. S., Milovanović, D. S.,& Marčeta Kaninski, M.. (2017). Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete. in Chemical Engineering Journal, 312, 99-105.
https://doi.org/10.1016/j.cej.2016.11.117

Nikolić VM, Karić SD, Nikolić Ž, Tošić MS, Tasić GS, Milovanović DS, Marčeta Kaninski M. Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete. in Chemical Engineering Journal. 2017;312:99-105.
doi:10.1016/j.cej.2016.11.117 .

Nikolić, Vladimir M., Karić, Slavko D., Nikolić, Željka, Tošić, Miloš S., Tasić, Gvozden S., Milovanović, Dubravka S., Marčeta Kaninski, Milica, "Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete" in Chemical Engineering Journal, 312 (2017):99-105,
https://doi.org/10.1016/j.cej.2016.11.117 . .

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Petrović, Suzana
AU  - Albu, C.
AU  - Zamfirescu, M.
AU  - Panjan, Peter
AU  - Milovanović, Dubravka S.
AU  - Popescu-Pelin, G.
AU  - Mihailescu, Ion N.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1326
AB  - Processing of AlTiN/TiN multilayered hard coatings by femtosecond (fs) laser pulses has been investigated. Irradiation was performed in air with linearly polarized laser radiation with pulses of 200 fs duration at 775 nm wavelength. Single or 1000 subsequent laser pulses were directed at normal incidence towards target surface. Laser energy per pulse was adjusted from 0.5 to 50 mu J and corresponding fluence was 0.17-17.5 J cm(-2). The as deposited and laser-ablated samples were characterized by optical confocal microscopy, optical profilometry and scanning and transmition electron microscopy. In case of the AlTiN/TiN coating, a single-pulse damage threshold of 0.41 J cm(-2) was estimated. Well defined holes/craters with diameters from 7 to 35 mu m, up to 40 mu m depth were drilled, depending on laser pulse energy and number, after 1000 laser pulses. For small energy/fluence, laser induced periodical surface structures were observed. A model is discussed which can account for these features by the accumulation effect during multi-pulse irradiation. The forming craters can prove useful for fabrication of micron solid state lubricant reservoirs in the protective coating-steel system.
T2  - Optics and Laser Technology
T1  - Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate
VL  - 89
SP  - 200
EP  - 207
DO  - 10.1016/j.optlastec.2016.10.015
ER  - 

@article{
author = "Gaković, Biljana M. and Petrović, Suzana and Albu, C. and Zamfirescu, M. and Panjan, Peter and Milovanović, Dubravka S. and Popescu-Pelin, G. and Mihailescu, Ion N.",
year = "2017",
abstract = "Processing of AlTiN/TiN multilayered hard coatings by femtosecond (fs) laser pulses has been investigated. Irradiation was performed in air with linearly polarized laser radiation with pulses of 200 fs duration at 775 nm wavelength. Single or 1000 subsequent laser pulses were directed at normal incidence towards target surface. Laser energy per pulse was adjusted from 0.5 to 50 mu J and corresponding fluence was 0.17-17.5 J cm(-2). The as deposited and laser-ablated samples were characterized by optical confocal microscopy, optical profilometry and scanning and transmition electron microscopy. In case of the AlTiN/TiN coating, a single-pulse damage threshold of 0.41 J cm(-2) was estimated. Well defined holes/craters with diameters from 7 to 35 mu m, up to 40 mu m depth were drilled, depending on laser pulse energy and number, after 1000 laser pulses. For small energy/fluence, laser induced periodical surface structures were observed. A model is discussed which can account for these features by the accumulation effect during multi-pulse irradiation. The forming craters can prove useful for fabrication of micron solid state lubricant reservoirs in the protective coating-steel system.",
journal = "Optics and Laser Technology",
title = "Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate",
volume = "89",
pages = "200-207",
doi = "10.1016/j.optlastec.2016.10.015"
}

Gaković, B. M., Petrović, S., Albu, C., Zamfirescu, M., Panjan, P., Milovanović, D. S., Popescu-Pelin, G.,& Mihailescu, I. N.. (2017). Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate. in Optics and Laser Technology, 89, 200-207.
https://doi.org/10.1016/j.optlastec.2016.10.015

Gaković BM, Petrović S, Albu C, Zamfirescu M, Panjan P, Milovanović DS, Popescu-Pelin G, Mihailescu IN. Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate. in Optics and Laser Technology. 2017;89:200-207.
doi:10.1016/j.optlastec.2016.10.015 .

Gaković, Biljana M., Petrović, Suzana, Albu, C., Zamfirescu, M., Panjan, Peter, Milovanović, Dubravka S., Popescu-Pelin, G., Mihailescu, Ion N., "Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate" in Optics and Laser Technology, 89 (2017):200-207,
https://doi.org/10.1016/j.optlastec.2016.10.015 . .

TY  - JOUR
AU  - Popović, Iva A.
AU  - Milovanović, Dubravka S.
AU  - Miletić, Jadranka
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/902
AB  - Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape
VL  - 48
IS  - 2
DO  - 10.1007/s11082-016-0413-5
ER  - 

@article{
author = "Popović, Iva A. and Milovanović, Dubravka S. and Miletić, Jadranka and Nešić, Maja D. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape",
volume = "48",
number = "2",
doi = "10.1007/s11082-016-0413-5"
}

Popović, I. A., Milovanović, D. S., Miletić, J., Nešić, M. D., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics
Springer., 48(2).
https://doi.org/10.1007/s11082-016-0413-5

Popović IA, Milovanović DS, Miletić J, Nešić MD, Vranješ M, Šaponjić Z, Petković M. Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics. 2016;48(2).
doi:10.1007/s11082-016-0413-5 .

Popović, Iva A., Milovanović, Dubravka S., Miletić, Jadranka, Nešić, Maja D., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape" in Optical and Quantum Electronics, 48, no. 2 (2016),
https://doi.org/10.1007/s11082-016-0413-5 . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Sibalija, Tatjana
AU  - Burzić, Meri
AU  - Polić, Suzana
AU  - Čolić, Katarina
AU  - Milovanović, Dubravka S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1001
AB  - The paper presents a study on the surface modifications of nickel based superalloy Nimonic 263 induced by laser shock peening (LSP) process. The process was performed by Nd3+:Yttrium Aluminium Garnet (YAG) picosecond laser using the following parameters: pulse duration 170 ps; repetition rate 10 Hz; pulse numbers of 50, 100 and 200; and wavelength of 1064 nm (with pulse energy of 2 mJ, 10 mJ and 15 mJ) and 532 nm (with pulse energy of 25 mJ, 30 mJ and 35 mJ). The following response characteristics were analyzed: modified surface areas obtained by the laser/material interaction were observed by scanning electron microscopy; elemental composition of the modified surface was evaluated by energy-dispersive spectroscopy (EDS); and Vickers microhardness tests were performed. LSP processing at both 1064 nm and 532 nm wavelengths improved the surface structure and microhardness of a material. Surface morphology changes of the irradiated samples were determined and surface roughness was calculated. These investigations are intended to contribute to the study on the level of microstructure and mechanical properties improvements due to LSP process that operate in a picosecond regime. In particular, the effects of laser wavelength on the microstructural and mechanical changes of a material are studied in detail.
PB  - MDPI
T2  - Metals
T1  - Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength
VL  - 6
IS  - 3
DO  - 10.3390/met6030041
ER  - 

@article{
author = "Petronić, Sanja Z. and Sibalija, Tatjana and Burzić, Meri and Polić, Suzana and Čolić, Katarina and Milovanović, Dubravka S.",
year = "2016",
abstract = "The paper presents a study on the surface modifications of nickel based superalloy Nimonic 263 induced by laser shock peening (LSP) process. The process was performed by Nd3+:Yttrium Aluminium Garnet (YAG) picosecond laser using the following parameters: pulse duration 170 ps; repetition rate 10 Hz; pulse numbers of 50, 100 and 200; and wavelength of 1064 nm (with pulse energy of 2 mJ, 10 mJ and 15 mJ) and 532 nm (with pulse energy of 25 mJ, 30 mJ and 35 mJ). The following response characteristics were analyzed: modified surface areas obtained by the laser/material interaction were observed by scanning electron microscopy; elemental composition of the modified surface was evaluated by energy-dispersive spectroscopy (EDS); and Vickers microhardness tests were performed. LSP processing at both 1064 nm and 532 nm wavelengths improved the surface structure and microhardness of a material. Surface morphology changes of the irradiated samples were determined and surface roughness was calculated. These investigations are intended to contribute to the study on the level of microstructure and mechanical properties improvements due to LSP process that operate in a picosecond regime. In particular, the effects of laser wavelength on the microstructural and mechanical changes of a material are studied in detail.",
publisher = "MDPI",
journal = "Metals",
title = "Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength",
volume = "6",
number = "3",
doi = "10.3390/met6030041"
}

Petronić, S. Z., Sibalija, T., Burzić, M., Polić, S., Čolić, K.,& Milovanović, D. S.. (2016). Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength. in Metals
MDPI., 6(3).
https://doi.org/10.3390/met6030041

Petronić SZ, Sibalija T, Burzić M, Polić S, Čolić K, Milovanović DS. Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength. in Metals. 2016;6(3).
doi:10.3390/met6030041 .

Petronić, Sanja Z., Sibalija, Tatjana, Burzić, Meri, Polić, Suzana, Čolić, Katarina, Milovanović, Dubravka S., "Picosecond Laser Shock Peening of Nimonic 263 at 1064 nm and 532 nm Wavelength" in Metals, 6, no. 3 (2016),
https://doi.org/10.3390/met6030041 . .

TY  - CONF
AU  - Ciganović, Jovan
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Stoiljković, Milovan
AU  - Milovanović, Dubravka
AU  - Trtica, Milan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12007
AB  - Nowadays, titanium and its alloys have numerous applications, e.g., in industrial processes, aerospace engineering and bio-medicine. Due to its good mechanical and chemical characteristics, including corrosion resistivity, relatively low density, as well as biocompatibility, of special importance is the use of titanium as implant material [1]. For bio-applications of titanium, optimal surface topography is of prime importance. In spite of that, laser generated modifications of Ti-surface in a controlled atmosphere have been only sporadically studied [2], while data regarding modifications induced under reduced air pressure are lacking. The present work studies the interaction of TEA CO2 laser with Ti target, under reduced air pressure of 0.1 mbar. The influence of the laser irradiances (ranging from 40-70 MWcm-2), and the number of applied laser pulses (10, 50, 100, 200, 500 and 1000) on surface morphology and plasma parameters of titanium have been investigated. In summary, the observed phenomena leading to surface modifications may be described as follows: (i) Creation of craters with conically cross-section and maximal depth of ~ 4 μm (after 10 pulses) up to ~ 20 μm (after 1000 pulses); (ii) Resolidification of droplets in the periphery region (hydrodynamic effects); (iii) Creation of plasma in front of the target. In order to correlate the plasma parameters with the surface modification time-integrated space-resolved laser induced plasma spectroscopy (TISR-LIPS) [3] has also been performed. Spectral lines of Ti I and Ti II were used for plasma diagnostics. The presence of plasma strongly affects the ablation process and plays a key role for surface modification of the irradiated Ti target.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade
T1  - Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience
SP  - 99
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12007
ER  - 

@conference{
author = "Ciganović, Jovan and Živković, Sanja and Momčilović, Miloš and Savović, Jelena and Kuzmanović, Miroslav M. and Stoiljković, Milovan and Milovanović, Dubravka and Trtica, Milan",
year = "2015",
abstract = "Nowadays, titanium and its alloys have numerous applications, e.g., in industrial processes, aerospace engineering and bio-medicine. Due to its good mechanical and chemical characteristics, including corrosion resistivity, relatively low density, as well as biocompatibility, of special importance is the use of titanium as implant material [1]. For bio-applications of titanium, optimal surface topography is of prime importance. In spite of that, laser generated modifications of Ti-surface in a controlled atmosphere have been only sporadically studied [2], while data regarding modifications induced under reduced air pressure are lacking. The present work studies the interaction of TEA CO2 laser with Ti target, under reduced air pressure of 0.1 mbar. The influence of the laser irradiances (ranging from 40-70 MWcm-2), and the number of applied laser pulses (10, 50, 100, 200, 500 and 1000) on surface morphology and plasma parameters of titanium have been investigated. In summary, the observed phenomena leading to surface modifications may be described as follows: (i) Creation of craters with conically cross-section and maximal depth of ~ 4 μm (after 10 pulses) up to ~ 20 μm (after 1000 pulses); (ii) Resolidification of droplets in the periphery region (hydrodynamic effects); (iii) Creation of plasma in front of the target. In order to correlate the plasma parameters with the surface modification time-integrated space-resolved laser induced plasma spectroscopy (TISR-LIPS) [3] has also been performed. Spectral lines of Ti I and Ti II were used for plasma diagnostics. The presence of plasma strongly affects the ablation process and plays a key role for surface modification of the irradiated Ti target.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade",
title = "Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience",
pages = "99-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12007"
}

Ciganović, J., Živković, S., Momčilović, M., Savović, J., Kuzmanović, M. M., Stoiljković, M., Milovanović, D.,& Trtica, M.. (2015). Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience. in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 99-100.
https://hdl.handle.net/21.15107/rcub_vinar_12007

Ciganović J, Živković S, Momčilović M, Savović J, Kuzmanović MM, Stoiljković M, Milovanović D, Trtica M. Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience. in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade. 2015;:99-100.
https://hdl.handle.net/21.15107/rcub_vinar_12007 .

Ciganović, Jovan, Živković, Sanja, Momčilović, Miloš, Savović, Jelena, Kuzmanović, Miroslav M., Stoiljković, Milovan, Milovanović, Dubravka, Trtica, Milan, "Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience" in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade (2015):99-100,
https://hdl.handle.net/21.15107/rcub_vinar_12007 .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Salatić, Branislav
AU  - Milovanović, Dubravka S.
AU  - Lazović, Vladimir M.
AU  - Živković, Ljiljana
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/392
AB  - Metallic copper Cu and bimetallic copper-silver CuAg nanoparticles (NPs) are generated by the ablation of copper bulk target in water and aqueous Ag colloidal solution, respectively. The experiments were performed using nanosecond Nd: YAG laser operating at 1064 nm. The generated NPs are characterized by UV-vis absorption spectroscopy, laser-induced breakdown spectroscopy, dynamic light scattering and scanning electron microscopy. The conducted investigations can be summarized as follows: (i) CuAg NPs colloidal solution possess the absorption in UV-vis spectral region, which can be attributed to the Cu-component; (ii) the primary bimetallic CuAg NPs have near uniform dimensions with diameter of about 15 nm, and as a rule, they are grouped into larger agglomerates without defined morphology; (iii) the obtained Cu NPs have mainly spherical form with average diameters up to 20 nm. Both types of NPs show a tendency towards the formation of large agglomerates with different morphology. Bimetallic NPs show the plasmon resonance in the vicinity of 640 nm with a good coincidence with formation of the colloidal solution of pure Cu NPs. The results also demonstrate that the core-shell structure (Ag-rich core/Cu-rich shell) is important for the formation of the bimetallic NPs, also agreeing very well with theory.
T2  - Journal of Optics
T1  - Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions
VL  - 17
IS  - 2
DO  - 10.1088/2040-8978/17/2/025402
ER  - 

@article{
author = "Petrović, Suzana and Salatić, Branislav and Milovanović, Dubravka S. and Lazović, Vladimir M. and Živković, Ljiljana and Trtica, Milan and Jelenković, Branislav",
year = "2015",
abstract = "Metallic copper Cu and bimetallic copper-silver CuAg nanoparticles (NPs) are generated by the ablation of copper bulk target in water and aqueous Ag colloidal solution, respectively. The experiments were performed using nanosecond Nd: YAG laser operating at 1064 nm. The generated NPs are characterized by UV-vis absorption spectroscopy, laser-induced breakdown spectroscopy, dynamic light scattering and scanning electron microscopy. The conducted investigations can be summarized as follows: (i) CuAg NPs colloidal solution possess the absorption in UV-vis spectral region, which can be attributed to the Cu-component; (ii) the primary bimetallic CuAg NPs have near uniform dimensions with diameter of about 15 nm, and as a rule, they are grouped into larger agglomerates without defined morphology; (iii) the obtained Cu NPs have mainly spherical form with average diameters up to 20 nm. Both types of NPs show a tendency towards the formation of large agglomerates with different morphology. Bimetallic NPs show the plasmon resonance in the vicinity of 640 nm with a good coincidence with formation of the colloidal solution of pure Cu NPs. The results also demonstrate that the core-shell structure (Ag-rich core/Cu-rich shell) is important for the formation of the bimetallic NPs, also agreeing very well with theory.",
journal = "Journal of Optics",
title = "Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions",
volume = "17",
number = "2",
doi = "10.1088/2040-8978/17/2/025402"
}

Petrović, S., Salatić, B., Milovanović, D. S., Lazović, V. M., Živković, L., Trtica, M.,& Jelenković, B.. (2015). Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions. in Journal of Optics, 17(2).
https://doi.org/10.1088/2040-8978/17/2/025402

Petrović S, Salatić B, Milovanović DS, Lazović VM, Živković L, Trtica M, Jelenković B. Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions. in Journal of Optics. 2015;17(2).
doi:10.1088/2040-8978/17/2/025402 .

Petrović, Suzana, Salatić, Branislav, Milovanović, Dubravka S., Lazović, Vladimir M., Živković, Ljiljana, Trtica, Milan, Jelenković, Branislav, "Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions" in Journal of Optics, 17, no. 2 (2015),
https://doi.org/10.1088/2040-8978/17/2/025402 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Limpouch, Jiri
AU  - Gavrilov, Peter T.
AU  - Gemini, L.
AU  - Panjan, Peter
AU  - Stašić, Jelena
AU  - Milovanović, Dubravka S.
AU  - Branković, Goran O.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/715
AB  - A double layer a-CN/TiAlN coating deposited on ASP30 steel substrate was irradiated by femtosecond laser and surface modification effects were observed. Moderate laser intensities used were in the range of 10(14)-10(13) W/cm(2), while the total thickness of double layer coating was 4.8 mu m (a-CN = 0.6 and TiAlN = 4.2 mu m). Laser-induced changes of the surface showed dependence on laser intensity and number of accumulated pulses. Irradiations at the highest intensity resulted in preservation of one or both layers up to 10 pulses, while at lower intensity (10(13) W/cm(2)) a-CN layer is removed after several pulses and TiAlN is preserved up to 50 pulses. Evaluated damage threshold of the target was 0.49 J/cm(2). Lower laser intensity irradiation produced periodic surface structures (LIPSS) over the entire irradiated spot with periodicity of similar to 700 nm, almost in agreement with the laser wavelength used. Irradiations carried out at the highest laser intensity (10(14) W/cm(2)) and laser pulse count of 50 resulted in the creation of crater like damages with depth up to 20 mu m. Craters were conically shaped, implying intensive processes which took place at the surface. Generation of LIPSS as well as craters can be of great interest for contemporary technologies.
T2  - Laser and Particle Beams
T1  - Surface modification of a-CN/TiAlN double layer coating on ASP 30 steel induced by femtosecond laser with 10(13)-10(14) W/cm(2) intensity in vacuum
VL  - 33
IS  - 3
SP  - 551
EP  - 559
DO  - 10.1017/S0263034615000610
ER  - 

@article{
author = "Trtica, Milan and Limpouch, Jiri and Gavrilov, Peter T. and Gemini, L. and Panjan, Peter and Stašić, Jelena and Milovanović, Dubravka S. and Branković, Goran O.",
year = "2015",
abstract = "A double layer a-CN/TiAlN coating deposited on ASP30 steel substrate was irradiated by femtosecond laser and surface modification effects were observed. Moderate laser intensities used were in the range of 10(14)-10(13) W/cm(2), while the total thickness of double layer coating was 4.8 mu m (a-CN = 0.6 and TiAlN = 4.2 mu m). Laser-induced changes of the surface showed dependence on laser intensity and number of accumulated pulses. Irradiations at the highest intensity resulted in preservation of one or both layers up to 10 pulses, while at lower intensity (10(13) W/cm(2)) a-CN layer is removed after several pulses and TiAlN is preserved up to 50 pulses. Evaluated damage threshold of the target was 0.49 J/cm(2). Lower laser intensity irradiation produced periodic surface structures (LIPSS) over the entire irradiated spot with periodicity of similar to 700 nm, almost in agreement with the laser wavelength used. Irradiations carried out at the highest laser intensity (10(14) W/cm(2)) and laser pulse count of 50 resulted in the creation of crater like damages with depth up to 20 mu m. Craters were conically shaped, implying intensive processes which took place at the surface. Generation of LIPSS as well as craters can be of great interest for contemporary technologies.",
journal = "Laser and Particle Beams",
title = "Surface modification of a-CN/TiAlN double layer coating on ASP 30 steel induced by femtosecond laser with 10(13)-10(14) W/cm(2) intensity in vacuum",
volume = "33",
number = "3",
pages = "551-559",
doi = "10.1017/S0263034615000610"
}

Trtica, M., Limpouch, J., Gavrilov, P. T., Gemini, L., Panjan, P., Stašić, J., Milovanović, D. S.,& Branković, G. O.. (2015). Surface modification of a-CN/TiAlN double layer coating on ASP 30 steel induced by femtosecond laser with 10(13)-10(14) W/cm(2) intensity in vacuum. in Laser and Particle Beams, 33(3), 551-559.
https://doi.org/10.1017/S0263034615000610

Trtica M, Limpouch J, Gavrilov PT, Gemini L, Panjan P, Stašić J, Milovanović DS, Branković GO. Surface modification of a-CN/TiAlN double layer coating on ASP 30 steel induced by femtosecond laser with 10(13)-10(14) W/cm(2) intensity in vacuum. in Laser and Particle Beams. 2015;33(3):551-559.
doi:10.1017/S0263034615000610 .

Trtica, Milan, Limpouch, Jiri, Gavrilov, Peter T., Gemini, L., Panjan, Peter, Stašić, Jelena, Milovanović, Dubravka S., Branković, Goran O., "Surface modification of a-CN/TiAlN double layer coating on ASP 30 steel induced by femtosecond laser with 10(13)-10(14) W/cm(2) intensity in vacuum" in Laser and Particle Beams, 33, no. 3 (2015):551-559,
https://doi.org/10.1017/S0263034615000610 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Milovanović, Dubravka S.
AU  - Salatić, Branislav
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Dražić, Goran
AU  - Mitrić, Miodrag
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/807
AB  - Bimetallic NiAu and complex NiO:Au nanoparticles were formed by laser ablation of Ni target immersed in the colloidal gold solution. Effect of laser parameters (pulse duration, fluences and ablation times) on size and composition of nanoparticles was investigated by ablating the target with two Nd:YAG lasers at 1064 nm, operating with different pulse durations, 150 ps and 20 ns. Stronger ablation of the Ni target and subsequient synthesis of nanoparticles is achieved with picosecond pulses, compared to the nanoparticles production with nanosecond pulses, because the former ablation induces activation of different reactions between species in the colloidal solution. Shape, size and composition of the synthesized nanopraticles were found to correlate with the concentration of Ni species in the colloidal solution. Higher Ni concentration leads to formation of larger NiAu nanoparticles in form of solid solution. Smaller nanoparticles with lower Ni concentration in the colloidal solution were achieved by their synthesis during nanosecond pulses, when the obtained distribution of composition corresponds to the NiO matrix with incorporated golden nanoparticles. The results also demonstrate that the formation of bimetallic NiAu and complex NiO:Au nanoparticles were possible by means of laser ablation in liquids. (C) 2015 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution
VL  - 166
SP  - 223
EP  - 232
DO  - 10.1016/j.matchemphys.2015.10.007
ER  - 

@article{
author = "Petrović, Suzana and Milovanović, Dubravka S. and Salatić, Branislav and Peruško, Davor and Kovač, Janez and Dražić, Goran and Mitrić, Miodrag and Trtica, Milan and Jelenković, Branislav",
year = "2015",
abstract = "Bimetallic NiAu and complex NiO:Au nanoparticles were formed by laser ablation of Ni target immersed in the colloidal gold solution. Effect of laser parameters (pulse duration, fluences and ablation times) on size and composition of nanoparticles was investigated by ablating the target with two Nd:YAG lasers at 1064 nm, operating with different pulse durations, 150 ps and 20 ns. Stronger ablation of the Ni target and subsequient synthesis of nanoparticles is achieved with picosecond pulses, compared to the nanoparticles production with nanosecond pulses, because the former ablation induces activation of different reactions between species in the colloidal solution. Shape, size and composition of the synthesized nanopraticles were found to correlate with the concentration of Ni species in the colloidal solution. Higher Ni concentration leads to formation of larger NiAu nanoparticles in form of solid solution. Smaller nanoparticles with lower Ni concentration in the colloidal solution were achieved by their synthesis during nanosecond pulses, when the obtained distribution of composition corresponds to the NiO matrix with incorporated golden nanoparticles. The results also demonstrate that the formation of bimetallic NiAu and complex NiO:Au nanoparticles were possible by means of laser ablation in liquids. (C) 2015 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution",
volume = "166",
pages = "223-232",
doi = "10.1016/j.matchemphys.2015.10.007"
}

Petrović, S., Milovanović, D. S., Salatić, B., Peruško, D., Kovač, J., Dražić, G., Mitrić, M., Trtica, M.,& Jelenković, B.. (2015). Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution. in Materials Chemistry and Physics
Elsevier., 166, 223-232.
https://doi.org/10.1016/j.matchemphys.2015.10.007

Petrović S, Milovanović DS, Salatić B, Peruško D, Kovač J, Dražić G, Mitrić M, Trtica M, Jelenković B. Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution. in Materials Chemistry and Physics. 2015;166:223-232.
doi:10.1016/j.matchemphys.2015.10.007 .

Petrović, Suzana, Milovanović, Dubravka S., Salatić, Branislav, Peruško, Davor, Kovač, Janez, Dražić, Goran, Mitrić, Miodrag, Trtica, Milan, Jelenković, Branislav, "Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution" in Materials Chemistry and Physics, 166 (2015):223-232,
https://doi.org/10.1016/j.matchemphys.2015.10.007 . .