TY  - CONF
AU  - Kovačević, Aleksander
AU  - Petrović, Suzana
AU  - Lekić, Marina
AU  - Vasić, Borislav
AU  - Salatić, Branislav
AU  - Potočnik, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11857
AB  - Један од ефеката интеракције ултра-кратког ласерског снопа са материјалима је формирање паралелних структура на површини (laser-induced parallel surface structures - LIPSS), чији је период мањи од таласне дужине снопа. Уколико се ради о вишеслојним танким филмовима метала, квалитет формираних структура је бољи. Узорак од пет двослојних танких филмова Al и Ti на супстрату Si смо изложили фемтосекундном снопу и запазили формирање две врсте структура које се разликују по облику. Обе су врсте вероватно узроковане појавом површинског плазмонаполаритона на површини најгорњег слоја. Појава плазмона поларитона на површини танких металних филмова и наночестица може да ограничи простирање електромагнетног поља и да појача флуоресцентни сигнал из молекула хемикалије на површини. У зависности од структуре интерфејса за одређивање циљне хемикалије на металној површини флуоресценција побољшана плазмоном (plasmon-enhanced fluorescence, PEF) је привлачан метод за скраћење времена и појачање осетљивости разних аналитичких технологија које се користе у форензици.
AB  - One of the effects of the interaction of ultrashort laser beam with materials is the forming of laser-induced parallel surface structures (LIPSS), with period less than beam wavelength. For multilayer thin metal films, the quality of formed structures is better. The sample of five bilayers of Al and Ti on Si substrate was exposed to femtosecond beam and noticed the forming of of two types of structures different in shape. Both are most probably the product of surface Plasmon polariton on the surface of most top layer. The occurrence of Plasmon polariton on the surface of thin metal layers and nanoparticles can confine the propagation of electromagnetic field and to amplify the fluorescent signal from molecules of the chemical compound on the surface. Depending on the interface structure for determining the target chemical on metal surface, Plasmon enhanced fluorescence is an attractive method for shortening the time of detection and increasing the sensitivity of various analytical technologies used in forensics.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - 9th International Conference IcETRAN and 66th ETRAN Conference : Proceedings ; June 6-9, 2022 ; Novi Pazar
T1  - Суб-микрометарске паралелне површинске
структуре индуковане фемтосекундним
ласерским снопом у форензици
T1  - Sub-micrometer parallel surface structures induced by femtosecond laser beam in forensics
SP  - 901
EP  - 905
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11857
ER  - 

@conference{
author = "Kovačević, Aleksander and Petrović, Suzana and Lekić, Marina and Vasić, Borislav and Salatić, Branislav and Potočnik, Jelena",
year = "2022",
abstract = "Један од ефеката интеракције ултра-кратког ласерског снопа са материјалима је формирање паралелних структура на површини (laser-induced parallel surface structures - LIPSS), чији је период мањи од таласне дужине снопа. Уколико се ради о вишеслојним танким филмовима метала, квалитет формираних структура је бољи. Узорак од пет двослојних танких филмова Al и Ti на супстрату Si смо изложили фемтосекундном снопу и запазили формирање две врсте структура које се разликују по облику. Обе су врсте вероватно узроковане појавом површинског плазмонаполаритона на површини најгорњег слоја. Појава плазмона поларитона на површини танких металних филмова и наночестица може да ограничи простирање електромагнетног поља и да појача флуоресцентни сигнал из молекула хемикалије на површини. У зависности од структуре интерфејса за одређивање циљне хемикалије на металној површини флуоресценција побољшана плазмоном (plasmon-enhanced fluorescence, PEF) је привлачан метод за скраћење времена и појачање осетљивости разних аналитичких технологија које се користе у форензици., One of the effects of the interaction of ultrashort laser beam with materials is the forming of laser-induced parallel surface structures (LIPSS), with period less than beam wavelength. For multilayer thin metal films, the quality of formed structures is better. The sample of five bilayers of Al and Ti on Si substrate was exposed to femtosecond beam and noticed the forming of of two types of structures different in shape. Both are most probably the product of surface Plasmon polariton on the surface of most top layer. The occurrence of Plasmon polariton on the surface of thin metal layers and nanoparticles can confine the propagation of electromagnetic field and to amplify the fluorescent signal from molecules of the chemical compound on the surface. Depending on the interface structure for determining the target chemical on metal surface, Plasmon enhanced fluorescence is an attractive method for shortening the time of detection and increasing the sensitivity of various analytical technologies used in forensics.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "9th International Conference IcETRAN and 66th ETRAN Conference : Proceedings ; June 6-9, 2022 ; Novi Pazar",
title = "Суб-микрометарске паралелне површинске
структуре индуковане фемтосекундним
ласерским снопом у форензици, Sub-micrometer parallel surface structures induced by femtosecond laser beam in forensics",
pages = "901-905",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11857"
}

Kovačević, A., Petrović, S., Lekić, M., Vasić, B., Salatić, B.,& Potočnik, J.. (2022). Суб-микрометарске паралелне површинске
структуре индуковане фемтосекундним
ласерским снопом у форензици. in 9th International Conference IcETRAN and 66th ETRAN Conference : Proceedings ; June 6-9, 2022 ; Novi Pazar
Belgrade : ETRAN Society., 901-905.
https://hdl.handle.net/21.15107/rcub_vinar_11857

Kovačević A, Petrović S, Lekić M, Vasić B, Salatić B, Potočnik J. Суб-микрометарске паралелне површинске
структуре индуковане фемтосекундним
ласерским снопом у форензици. in 9th International Conference IcETRAN and 66th ETRAN Conference : Proceedings ; June 6-9, 2022 ; Novi Pazar. 2022;:901-905.
https://hdl.handle.net/21.15107/rcub_vinar_11857 .

Kovačević, Aleksander, Petrović, Suzana, Lekić, Marina, Vasić, Borislav, Salatić, Branislav, Potočnik, Jelena, "Суб-микрометарске паралелне површинске
структуре индуковане фемтосекундним
ласерским снопом у форензици" in 9th International Conference IcETRAN and 66th ETRAN Conference : Proceedings ; June 6-9, 2022 ; Novi Pazar (2022):901-905,
https://hdl.handle.net/21.15107/rcub_vinar_11857 .

TY  - CONF
AU  - Kovačević, Aleksander G.
AU  - Petrović, Suzana
AU  - Potočnik, Jelena
AU  - Lekić, Marina
AU  - Salatić, Branislav
AU  - Lazović, Vladimir
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11087
AB  - The interaction of ultrashort laser beam with metal surfaces may induce the generation of periodic structures (LIPSS) with period less than the incoming wavelength, opening wide area of application [1, 2]. The presence of the underneath layer influences the quality of the LIPSS [3] . We have exposed multilayer thin films Ni/Ti, Ni/Pd, W/Ti, Ti/Ta to femtosecond beams of various wavelengths and powers. The interactions have been performed by Mira900 fs laser of Coherent. Detailed surface morphology after irradiation was examined firstly by optical microscopy, and then by scanning electron microscopy (JEOL JSM-7500F, Tokyo, Japan). Two types of structures have been noticed. Their appearance differ in the direction against the polarization direction, in pronounced ablation and in the spatial period, enabling their grouping into LIPSS of higher and lower spatial frequencies. Surface plasmon polariton is seen as the most probable cause of periodic distribution of energy at the surface and consequently to LIPSS.
PB  - Belgrade : Institute of Physics
C3  - 14th Photonics Workshop : Conference : Book of abstracts; March 14-17, 2021; Kopaonik, Serbia
T1  - Laser-induced parallel structures on multilayer thin films of Ni, Pd, Ti, Ta and W
SP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11087
ER  - 

@conference{
author = "Kovačević, Aleksander G. and Petrović, Suzana and Potočnik, Jelena and Lekić, Marina and Salatić, Branislav and Lazović, Vladimir and Pantelić, Dejan and Jelenković, Branislav",
year = "2021",
abstract = "The interaction of ultrashort laser beam with metal surfaces may induce the generation of periodic structures (LIPSS) with period less than the incoming wavelength, opening wide area of application [1, 2]. The presence of the underneath layer influences the quality of the LIPSS [3] . We have exposed multilayer thin films Ni/Ti, Ni/Pd, W/Ti, Ti/Ta to femtosecond beams of various wavelengths and powers. The interactions have been performed by Mira900 fs laser of Coherent. Detailed surface morphology after irradiation was examined firstly by optical microscopy, and then by scanning electron microscopy (JEOL JSM-7500F, Tokyo, Japan). Two types of structures have been noticed. Their appearance differ in the direction against the polarization direction, in pronounced ablation and in the spatial period, enabling their grouping into LIPSS of higher and lower spatial frequencies. Surface plasmon polariton is seen as the most probable cause of periodic distribution of energy at the surface and consequently to LIPSS.",
publisher = "Belgrade : Institute of Physics",
journal = "14th Photonics Workshop : Conference : Book of abstracts; March 14-17, 2021; Kopaonik, Serbia",
title = "Laser-induced parallel structures on multilayer thin films of Ni, Pd, Ti, Ta and W",
pages = "13",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11087"
}

Kovačević, A. G., Petrović, S., Potočnik, J., Lekić, M., Salatić, B., Lazović, V., Pantelić, D.,& Jelenković, B.. (2021). Laser-induced parallel structures on multilayer thin films of Ni, Pd, Ti, Ta and W. in 14th Photonics Workshop : Conference : Book of abstracts; March 14-17, 2021; Kopaonik, Serbia
Belgrade : Institute of Physics., 13.
https://hdl.handle.net/21.15107/rcub_vinar_11087

Kovačević AG, Petrović S, Potočnik J, Lekić M, Salatić B, Lazović V, Pantelić D, Jelenković B. Laser-induced parallel structures on multilayer thin films of Ni, Pd, Ti, Ta and W. in 14th Photonics Workshop : Conference : Book of abstracts; March 14-17, 2021; Kopaonik, Serbia. 2021;:13.
https://hdl.handle.net/21.15107/rcub_vinar_11087 .

Kovačević, Aleksander G., Petrović, Suzana, Potočnik, Jelena, Lekić, Marina, Salatić, Branislav, Lazović, Vladimir, Pantelić, Dejan, Jelenković, Branislav, "Laser-induced parallel structures on multilayer thin films of Ni, Pd, Ti, Ta and W" in 14th Photonics Workshop : Conference : Book of abstracts; March 14-17, 2021; Kopaonik, Serbia (2021):13,
https://hdl.handle.net/21.15107/rcub_vinar_11087 .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Gavrilov, Nemanja M.
AU  - Jokić, Bojan M.
AU  - Gilić, Martina
AU  - Krstić, Aleksandar D.
AU  - Pašti, Igor A.
AU  - Babić, Biljana M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8495
AB  - Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.
T2  - Materials Chemistry and Physics
T1  - Composition, structure and potential energy application of nitrogen doped carbon cryogels
VL  - 239
SP  - 122120
DO  - 10.1016/j.matchemphys.2019.122120
ER  - 

@article{
author = "Kalijadis, Ana and Gavrilov, Nemanja M. and Jokić, Bojan M. and Gilić, Martina and Krstić, Aleksandar D. and Pašti, Igor A. and Babić, Biljana M.",
year = "2020",
abstract = "Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.",
journal = "Materials Chemistry and Physics",
title = "Composition, structure and potential energy application of nitrogen doped carbon cryogels",
volume = "239",
pages = "122120",
doi = "10.1016/j.matchemphys.2019.122120"
}

Kalijadis, A., Gavrilov, N. M., Jokić, B. M., Gilić, M., Krstić, A. D., Pašti, I. A.,& Babić, B. M.. (2020). Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics, 239, 122120.
https://doi.org/10.1016/j.matchemphys.2019.122120

Kalijadis A, Gavrilov NM, Jokić BM, Gilić M, Krstić AD, Pašti IA, Babić BM. Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics. 2020;239:122120.
doi:10.1016/j.matchemphys.2019.122120 .

Kalijadis, Ana, Gavrilov, Nemanja M., Jokić, Bojan M., Gilić, Martina, Krstić, Aleksandar D., Pašti, Igor A., Babić, Biljana M., "Composition, structure and potential energy application of nitrogen doped carbon cryogels" in Materials Chemistry and Physics, 239 (2020):122120,
https://doi.org/10.1016/j.matchemphys.2019.122120 . .

TY  - JOUR
AU  - Kovačević, Aleksander
AU  - Petrović, Suzana
AU  - Salatić, Branislav
AU  - Lekić, Marina
AU  - Vasić, Borislav Z.
AU  - Gajić, Radoš
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9015
AB  - The occurrence of laser-induced periodic surface structures (LIPSS) has been known for a while. Multilayer thin films, like Al/Ti, are suitable for LIPSS formation and attractive for applications—due to their wearing behavior and corrosion resistance; LIPSS generation may improve their properties as well. LIPSS properties depend not only on the material but also on the beam characteristics, like wavelength, polarization and scanning directions, etc. After exposing with NIR femtosecond pulses from Coherent Mira 900 laser system in several beam exposures, we have analyzed the samples of thin metal film systems with Tescan Mira3 SEM and NTegra AFM. The formation of LIPSS is most probably due to the generation of surface plasmon polariton, through the periodic distribution of energy in the interaction zone which lead to thermal processes in layers and interfaces. Two types of LIPSS were generated, which differ in shape, orientation and in ablation pronounced or not. For consecutive interactions in the same direction, LIPSS maintained its orientation, while for orthogonal passes LIPSS with mutually orthogonal orientation were generated. LIPSS period fluctuated between 320 and 380 nm and structures with pronounced ablation have significantly smaller width. Probable mechanism is that for greater accumulated energy pronounced ablation takes place giving LIPSS in the form of trenches or grooves, while for less accumulated energy the buildup of the material—probably due to pronounced oxidation—lead to LIPSS in the form of hills or ridges.
T2  - Optical and Quantum Electronics
T1  - Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations
VL  - 52
IS  - 6
SP  - 301
DO  - 10.1007/s11082-020-02398-2
ER  - 

@article{
author = "Kovačević, Aleksander and Petrović, Suzana and Salatić, Branislav and Lekić, Marina and Vasić, Borislav Z. and Gajić, Radoš and Pantelić, Dejan and Jelenković, Branislav",
year = "2020",
abstract = "The occurrence of laser-induced periodic surface structures (LIPSS) has been known for a while. Multilayer thin films, like Al/Ti, are suitable for LIPSS formation and attractive for applications—due to their wearing behavior and corrosion resistance; LIPSS generation may improve their properties as well. LIPSS properties depend not only on the material but also on the beam characteristics, like wavelength, polarization and scanning directions, etc. After exposing with NIR femtosecond pulses from Coherent Mira 900 laser system in several beam exposures, we have analyzed the samples of thin metal film systems with Tescan Mira3 SEM and NTegra AFM. The formation of LIPSS is most probably due to the generation of surface plasmon polariton, through the periodic distribution of energy in the interaction zone which lead to thermal processes in layers and interfaces. Two types of LIPSS were generated, which differ in shape, orientation and in ablation pronounced or not. For consecutive interactions in the same direction, LIPSS maintained its orientation, while for orthogonal passes LIPSS with mutually orthogonal orientation were generated. LIPSS period fluctuated between 320 and 380 nm and structures with pronounced ablation have significantly smaller width. Probable mechanism is that for greater accumulated energy pronounced ablation takes place giving LIPSS in the form of trenches or grooves, while for less accumulated energy the buildup of the material—probably due to pronounced oxidation—lead to LIPSS in the form of hills or ridges.",
journal = "Optical and Quantum Electronics",
title = "Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations",
volume = "52",
number = "6",
pages = "301",
doi = "10.1007/s11082-020-02398-2"
}

Kovačević, A., Petrović, S., Salatić, B., Lekić, M., Vasić, B. Z., Gajić, R., Pantelić, D.,& Jelenković, B.. (2020). Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations. in Optical and Quantum Electronics, 52(6), 301.
https://doi.org/10.1007/s11082-020-02398-2

Kovačević A, Petrović S, Salatić B, Lekić M, Vasić BZ, Gajić R, Pantelić D, Jelenković B. Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations. in Optical and Quantum Electronics. 2020;52(6):301.
doi:10.1007/s11082-020-02398-2 .

Kovačević, Aleksander, Petrović, Suzana, Salatić, Branislav, Lekić, Marina, Vasić, Borislav Z., Gajić, Radoš, Pantelić, Dejan, Jelenković, Branislav, "Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations" in Optical and Quantum Electronics, 52, no. 6 (2020):301,
https://doi.org/10.1007/s11082-020-02398-2 . .

TY  - JOUR
AU  - Kovačević, Aleksander
AU  - Petrović, Suzana
AU  - Mimidis, Alexandros
AU  - Stratakis, Emmanuel
AU  - Pantelić, Dejan
AU  - Kolarić, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9632
AB  - The influence of material characteristics—i.e., type or surface texture—to wetting properties is nowadays increased by the implementation of ultrafast lasers for nanostructuring. In this account, we exposed multilayer thin metal film samples of different materials to a femtosecond laser beam at a 1030 nm wavelength. The interaction generated high-quality laser-induced periodic surface structures (LIPSS) of spatial periods between 740 and 790 nm and with maximal average corrugation height below 100 nm. The contact angle (CA) values of the water droplets on the surface were estimated and the values between unmodified and modified samples were compared. Even though the laser interaction changed both the surface morphology and the chemical composition, the wetting properties were predominantly influenced by the small change in morphology causing the increase in the contact angle of ~80%, which could not be explained classically. The influence of both surface corrugation and chemical composition to the wetting properties has been thoroughly investigated, discussed and explained. The presented results clearly confirm that femtosecond patterning can be used to mold wetting properties.
T2  - Applied Sciences
T1  - Molding Wetting by Laser-Induced Nanostructures
VL  - 10
IS  - 17
SP  - 6008
DO  - 10.3390/app10176008
ER  - 

@article{
author = "Kovačević, Aleksander and Petrović, Suzana and Mimidis, Alexandros and Stratakis, Emmanuel and Pantelić, Dejan and Kolarić, Branko",
year = "2020",
abstract = "The influence of material characteristics—i.e., type or surface texture—to wetting properties is nowadays increased by the implementation of ultrafast lasers for nanostructuring. In this account, we exposed multilayer thin metal film samples of different materials to a femtosecond laser beam at a 1030 nm wavelength. The interaction generated high-quality laser-induced periodic surface structures (LIPSS) of spatial periods between 740 and 790 nm and with maximal average corrugation height below 100 nm. The contact angle (CA) values of the water droplets on the surface were estimated and the values between unmodified and modified samples were compared. Even though the laser interaction changed both the surface morphology and the chemical composition, the wetting properties were predominantly influenced by the small change in morphology causing the increase in the contact angle of ~80%, which could not be explained classically. The influence of both surface corrugation and chemical composition to the wetting properties has been thoroughly investigated, discussed and explained. The presented results clearly confirm that femtosecond patterning can be used to mold wetting properties.",
journal = "Applied Sciences",
title = "Molding Wetting by Laser-Induced Nanostructures",
volume = "10",
number = "17",
pages = "6008",
doi = "10.3390/app10176008"
}

Kovačević, A., Petrović, S., Mimidis, A., Stratakis, E., Pantelić, D.,& Kolarić, B.. (2020). Molding Wetting by Laser-Induced Nanostructures. in Applied Sciences, 10(17), 6008.
https://doi.org/10.3390/app10176008

Kovačević A, Petrović S, Mimidis A, Stratakis E, Pantelić D, Kolarić B. Molding Wetting by Laser-Induced Nanostructures. in Applied Sciences. 2020;10(17):6008.
doi:10.3390/app10176008 .

Kovačević, Aleksander, Petrović, Suzana, Mimidis, Alexandros, Stratakis, Emmanuel, Pantelić, Dejan, Kolarić, Branko, "Molding Wetting by Laser-Induced Nanostructures" in Applied Sciences, 10, no. 17 (2020):6008,
https://doi.org/10.3390/app10176008 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Skoulas, Evangelos
AU  - Kovač, Janez
AU  - Mitrić, Miodrag
AU  - Potočnik, Jelena
AU  - Rakočević, Zlatko Lj.
AU  - Stratakis, Emmanuel
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8816
AB  - The formation of an ordered surface texture with micro and nanometer features on Ti/Zr multilayers is studied for better understanding and improvement of cell integration. Nanocomposite in form 30×(Ti/Zr)/Si thin films was deposited by ion sputtering on Si substrate for biocompatibility investigation. Surface texturing by femtosecond laser processing made it possible to form the laser-induced periodic surface structure (LIPSS) in each laser-written line. At fluence slightly above the ablation threshold, beside the formation of low spatial frequency-LIPSS (LSFL) oriented perpendicular to the direction of the laser polarization, the laser-induced surface oxidation was achieved on the irradiated area. Intermixing between the Ti and Zr layers with the formation of alloy in the sub-surface region was attained during the laser processing. The surface of the Ti/Zr multilayer system with changed composition and topography was used to observe the effect of topography on the survival, adhesion and proliferation of the murine mesenchymal stem cells (MSCs). Confocal and SEM microscopy images showed that cell adhesion and their growth improve on these modified surfaces, with tendency of the cell orientation along of LIPSS in laser-written lines. © 2019 by the authors.
T2  - Coatings
T1  - Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response
VL  - 9
IS  - 12
SP  - 854
DO  - 10.3390/coatings9120854
ER  - 

@article{
author = "Petrović, Suzana and Peruško, Davor and Skoulas, Evangelos and Kovač, Janez and Mitrić, Miodrag and Potočnik, Jelena and Rakočević, Zlatko Lj. and Stratakis, Emmanuel",
year = "2019",
abstract = "The formation of an ordered surface texture with micro and nanometer features on Ti/Zr multilayers is studied for better understanding and improvement of cell integration. Nanocomposite in form 30×(Ti/Zr)/Si thin films was deposited by ion sputtering on Si substrate for biocompatibility investigation. Surface texturing by femtosecond laser processing made it possible to form the laser-induced periodic surface structure (LIPSS) in each laser-written line. At fluence slightly above the ablation threshold, beside the formation of low spatial frequency-LIPSS (LSFL) oriented perpendicular to the direction of the laser polarization, the laser-induced surface oxidation was achieved on the irradiated area. Intermixing between the Ti and Zr layers with the formation of alloy in the sub-surface region was attained during the laser processing. The surface of the Ti/Zr multilayer system with changed composition and topography was used to observe the effect of topography on the survival, adhesion and proliferation of the murine mesenchymal stem cells (MSCs). Confocal and SEM microscopy images showed that cell adhesion and their growth improve on these modified surfaces, with tendency of the cell orientation along of LIPSS in laser-written lines. © 2019 by the authors.",
journal = "Coatings",
title = "Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response",
volume = "9",
number = "12",
pages = "854",
doi = "10.3390/coatings9120854"
}

Petrović, S., Peruško, D., Skoulas, E., Kovač, J., Mitrić, M., Potočnik, J., Rakočević, Z. Lj.,& Stratakis, E.. (2019). Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response. in Coatings, 9(12), 854.
https://doi.org/10.3390/coatings9120854

Petrović S, Peruško D, Skoulas E, Kovač J, Mitrić M, Potočnik J, Rakočević ZL, Stratakis E. Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response. in Coatings. 2019;9(12):854.
doi:10.3390/coatings9120854 .

Petrović, Suzana, Peruško, Davor, Skoulas, Evangelos, Kovač, Janez, Mitrić, Miodrag, Potočnik, Jelena, Rakočević, Zlatko Lj., Stratakis, Emmanuel, "Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response" in Coatings, 9, no. 12 (2019):854,
https://doi.org/10.3390/coatings9120854 . .

TY  - JOUR
AU  - Kuzmanović, Bojana
AU  - Vujković, Milica
AU  - Tomić, Nataša M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Lazović, Vladimir M.
AU  - Šljukić, Biljana
AU  - Ivanović, Nenad
AU  - Mentus, Slavko V.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0013468619305584
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8135
AB  - Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd
T2  - Electrochimica Acta
T1  - The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites
VL  - 306
SP  - 506
EP  - 515
DO  - 10.1016/j.electacta.2019.03.135
ER  - 

@article{
author = "Kuzmanović, Bojana and Vujković, Milica and Tomić, Nataša M. and Bajuk-Bogdanović, Danica V. and Lazović, Vladimir M. and Šljukić, Biljana and Ivanović, Nenad and Mentus, Slavko V.",
year = "2019",
abstract = "Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd",
journal = "Electrochimica Acta",
title = "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites",
volume = "306",
pages = "506-515",
doi = "10.1016/j.electacta.2019.03.135"
}

Kuzmanović, B., Vujković, M., Tomić, N. M., Bajuk-Bogdanović, D. V., Lazović, V. M., Šljukić, B., Ivanović, N.,& Mentus, S. V.. (2019). The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites. in Electrochimica Acta, 306, 506-515.
https://doi.org/10.1016/j.electacta.2019.03.135

Kuzmanović B, Vujković M, Tomić NM, Bajuk-Bogdanović DV, Lazović VM, Šljukić B, Ivanović N, Mentus SV. The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites. in Electrochimica Acta. 2019;306:506-515.
doi:10.1016/j.electacta.2019.03.135 .

Kuzmanović, Bojana, Vujković, Milica, Tomić, Nataša M., Bajuk-Bogdanović, Danica V., Lazović, Vladimir M., Šljukić, Biljana, Ivanović, Nenad, Mentus, Slavko V., "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites" in Electrochimica Acta, 306 (2019):506-515,
https://doi.org/10.1016/j.electacta.2019.03.135 . .

TY  - CONF
AU  - Kovačević, Aleksander
AU  - Petrović, Suzana
AU  - Salatić, Branislav
AU  - Lekić, Marina
AU  - Vasić, Borislav Z.
AU  - Gajić, Radoš
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11884
AB  - The occurrence of laser-induced periodic surface structures (LIPSS) has been known for a while [1]. Multilayer thin films, like Al/Ti, are suitable for LIPSS formation and attractive for applications – due to their wearing behavior and corrosion resistance; LIPSS generation may improve their properties as well [2, 3]. LIPSS properties depend not only on the material but also on the beam characteristics, like wavelength, polarization and scanning directions, etc. [4]. After exposing with NIR femtosecond pulses from Coherent Mira 900 laser system in several beam exposures, we have analyzed the samples of thin metal film systems with Tescan Mira3 SEM and NTegra AFM. The formation of LIPSS is most probably due to the generation of surface plasmon polariton, through the periodic distribution of energy in the interaction zone which lead to thermal processes in layers and interfaces. Two types of LIPSS were generated, which differ in shape, orientation and in ablation pronounced or not. For consecutive interactions in the same direction, LIPSS maintained its orientation, while for orthogonal passes LIPSS with mutually orthogonal orientation were generated. LIPSS period fluctuated between 320 and 380 nm and structures with pronounced ablation have significantly smaller width. Probable mechanism is that for greater accumulated energy pronounced ablation takes place giving LIPSS in the form of “trenches”, while for less accumulated energy the buildup of the material – probably due to pronounced oxidation – lead to LIPSS in the form of “hills”.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations
SP  - 160
EP  - 160
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11884
ER  - 

@conference{
author = "Kovačević, Aleksander and Petrović, Suzana and Salatić, Branislav and Lekić, Marina and Vasić, Borislav Z. and Gajić, Radoš and Pantelić, Dejan and Jelenković, Branislav",
year = "2019",
abstract = "The occurrence of laser-induced periodic surface structures (LIPSS) has been known for a while [1]. Multilayer thin films, like Al/Ti, are suitable for LIPSS formation and attractive for applications – due to their wearing behavior and corrosion resistance; LIPSS generation may improve their properties as well [2, 3]. LIPSS properties depend not only on the material but also on the beam characteristics, like wavelength, polarization and scanning directions, etc. [4]. After exposing with NIR femtosecond pulses from Coherent Mira 900 laser system in several beam exposures, we have analyzed the samples of thin metal film systems with Tescan Mira3 SEM and NTegra AFM. The formation of LIPSS is most probably due to the generation of surface plasmon polariton, through the periodic distribution of energy in the interaction zone which lead to thermal processes in layers and interfaces. Two types of LIPSS were generated, which differ in shape, orientation and in ablation pronounced or not. For consecutive interactions in the same direction, LIPSS maintained its orientation, while for orthogonal passes LIPSS with mutually orthogonal orientation were generated. LIPSS period fluctuated between 320 and 380 nm and structures with pronounced ablation have significantly smaller width. Probable mechanism is that for greater accumulated energy pronounced ablation takes place giving LIPSS in the form of “trenches”, while for less accumulated energy the buildup of the material – probably due to pronounced oxidation – lead to LIPSS in the form of “hills”.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations",
pages = "160-160",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11884"
}

Kovačević, A., Petrović, S., Salatić, B., Lekić, M., Vasić, B. Z., Gajić, R., Pantelić, D.,& Jelenković, B.. (2019). Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 160-160.
https://hdl.handle.net/21.15107/rcub_vinar_11884

Kovačević A, Petrović S, Salatić B, Lekić M, Vasić BZ, Gajić R, Pantelić D, Jelenković B. Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:160-160.
https://hdl.handle.net/21.15107/rcub_vinar_11884 .

Kovačević, Aleksander, Petrović, Suzana, Salatić, Branislav, Lekić, Marina, Vasić, Borislav Z., Gajić, Radoš, Pantelić, Dejan, Jelenković, Branislav, "Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):160-160,
https://hdl.handle.net/21.15107/rcub_vinar_11884 .

TY  - JOUR
AU  - Davidović, Milena D.
AU  - Davidović, Miloš D.
AU  - Sanz, Angel S.
AU  - Božić, Mirjana
AU  - Vasiljević, Darko
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7965
AB  - In the diffraction pattern produced by a half-plane sharp edge when it obstructs the passage of a laser beam, two characteristic regions are noticeable. There is a central region, where the diffraction of laser light appears in the region of geometric shadow, while intensity oscillations are observed in the non-obstructed area. On both sides of the edge, there are also very long light traces along the normal to the edge of the obstacle. The theoretical explanation of this phenomenon is based on the Fresnel–Kirchhoff diffraction theory applied to the Gaussian beam propagation behind the obstacle. In this paper, we supplement this explanation by considering electromagnetic flow lines, which provide a more complete interpretation of the phenomenon in terms of electric and magnetic fields and flux lines; at the same time, that can be related to average photon paths. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Journal of Russian Laser Research
T1  - Trajectory-Based Interpretation of Laser Light Diffraction by a Sharp Edge
VL  - 39
IS  - 5
SP  - 438
EP  - 447
DO  - 10.1007/s10946-018-9738-9
ER  - 

@article{
author = "Davidović, Milena D. and Davidović, Miloš D. and Sanz, Angel S. and Božić, Mirjana and Vasiljević, Darko",
year = "2018",
abstract = "In the diffraction pattern produced by a half-plane sharp edge when it obstructs the passage of a laser beam, two characteristic regions are noticeable. There is a central region, where the diffraction of laser light appears in the region of geometric shadow, while intensity oscillations are observed in the non-obstructed area. On both sides of the edge, there are also very long light traces along the normal to the edge of the obstacle. The theoretical explanation of this phenomenon is based on the Fresnel–Kirchhoff diffraction theory applied to the Gaussian beam propagation behind the obstacle. In this paper, we supplement this explanation by considering electromagnetic flow lines, which provide a more complete interpretation of the phenomenon in terms of electric and magnetic fields and flux lines; at the same time, that can be related to average photon paths. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Journal of Russian Laser Research",
title = "Trajectory-Based Interpretation of Laser Light Diffraction by a Sharp Edge",
volume = "39",
number = "5",
pages = "438-447",
doi = "10.1007/s10946-018-9738-9"
}

Davidović, M. D., Davidović, M. D., Sanz, A. S., Božić, M.,& Vasiljević, D.. (2018). Trajectory-Based Interpretation of Laser Light Diffraction by a Sharp Edge. in Journal of Russian Laser Research, 39(5), 438-447.
https://doi.org/10.1007/s10946-018-9738-9

Davidović MD, Davidović MD, Sanz AS, Božić M, Vasiljević D. Trajectory-Based Interpretation of Laser Light Diffraction by a Sharp Edge. in Journal of Russian Laser Research. 2018;39(5):438-447.
doi:10.1007/s10946-018-9738-9 .

Davidović, Milena D., Davidović, Miloš D., Sanz, Angel S., Božić, Mirjana, Vasiljević, Darko, "Trajectory-Based Interpretation of Laser Light Diffraction by a Sharp Edge" in Journal of Russian Laser Research, 39, no. 5 (2018):438-447,
https://doi.org/10.1007/s10946-018-9738-9 . .

TY  - JOUR
AU  - Ralević, Uroš
AU  - Isic, Goran
AU  - Vasić Anićijević, Dragana D.
AU  - Laban, Bojana B.
AU  - Bogdanović, Una
AU  - Lazović, Vladimir M.
AU  - Vodnik, Vesna
AU  - Gajic, Rados
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1890
AB  - The adsorption of thiacyanine dye molecules on citrate-stabilized silver nanoparticle clusters drop-cast onto freshly cleaved mica or highly oriented pyrolytic graphite surfaces is examined using colocalized surface-enhanced Raman spectroscopy and atomic force microscopy. The incidence of dye Raman signatures in photoluminescence hotspots identified around nanoparticle clusters is considered for both citrate- and borate-capped silver nanoparticles and found to be substantially lower in the former case, suggesting that the citrate anions impede the efficient dye adsorption. Rigorous numerical simulations of light scattering on random nanoparticle clusters are used for estimating the electromagnetic enhancement and elucidating the hotspot formation mechanism. The majority of the enhanced Raman signal, estimated to be more than 90%, is found to originate from the nanogaps between adjacent nanoparticles in the cluster, regardless of the cluster size and geometry. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters
VL  - 434
SP  - 540
EP  - 548
DO  - 10.1016/j.apsusc.2017.10.148
ER  - 

@article{
author = "Ralević, Uroš and Isic, Goran and Vasić Anićijević, Dragana D. and Laban, Bojana B. and Bogdanović, Una and Lazović, Vladimir M. and Vodnik, Vesna and Gajic, Rados",
year = "2018",
abstract = "The adsorption of thiacyanine dye molecules on citrate-stabilized silver nanoparticle clusters drop-cast onto freshly cleaved mica or highly oriented pyrolytic graphite surfaces is examined using colocalized surface-enhanced Raman spectroscopy and atomic force microscopy. The incidence of dye Raman signatures in photoluminescence hotspots identified around nanoparticle clusters is considered for both citrate- and borate-capped silver nanoparticles and found to be substantially lower in the former case, suggesting that the citrate anions impede the efficient dye adsorption. Rigorous numerical simulations of light scattering on random nanoparticle clusters are used for estimating the electromagnetic enhancement and elucidating the hotspot formation mechanism. The majority of the enhanced Raman signal, estimated to be more than 90%, is found to originate from the nanogaps between adjacent nanoparticles in the cluster, regardless of the cluster size and geometry. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters",
volume = "434",
pages = "540-548",
doi = "10.1016/j.apsusc.2017.10.148"
}

Ralević, U., Isic, G., Vasić Anićijević, D. D., Laban, B. B., Bogdanović, U., Lazović, V. M., Vodnik, V.,& Gajic, R.. (2018). Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters. in Applied Surface Science, 434, 540-548.
https://doi.org/10.1016/j.apsusc.2017.10.148

Ralević U, Isic G, Vasić Anićijević DD, Laban BB, Bogdanović U, Lazović VM, Vodnik V, Gajic R. Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters. in Applied Surface Science. 2018;434:540-548.
doi:10.1016/j.apsusc.2017.10.148 .

Ralević, Uroš, Isic, Goran, Vasić Anićijević, Dragana D., Laban, Bojana B., Bogdanović, Una, Lazović, Vladimir M., Vodnik, Vesna, Gajic, Rados, "Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters" in Applied Surface Science, 434 (2018):540-548,
https://doi.org/10.1016/j.apsusc.2017.10.148 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Panjan, Peter
AU  - Kovač, Janez
AU  - Lazović, Vladimir M.
AU  - Ristoscu, Carmen
AU  - Negut, Irina
AU  - Mihailescu, Ion N.
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1475-3
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7686
AB  - The oxidation behaviour and morphological modification of CrN/(Cr,V)N coatings on Si wafers were studied after UV nanosecond laser (wavelength 248 nm, pulse duration 25 ns) processing in ambient air. The evolution of the surface composition and microstructure with the number of accumulated/subsequent pulses was systematically analysed depending on the initial content of vanadium in the as-deposited coatings. Irradiation of CrN/(Cr,V)N coatings with different content of vanadium was carried out at a fluence of 0.17 J cm−2with different number of pulses. The concentration of metallic components was fairly homogeneous distributed throughout the sample. However, on surface and in sub-surface regions the contents of Cr and V are diminished due to laser-induced oxidation. The composition and thickness of forming oxides mixture, Cr2O3and V2O5, are depending on the number of applied laser pulses and the initial vanadium content. The asymmetric progress of surface morphology is characterized by the formation of grainy structures at peripheries and the appearance of cracks and irregular closed shapes in the centre of the irradiation area.
T2  - Optical and Quantum Electronics
T1  - Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses
VL  - 50
IS  - 5
SP  - 208
DO  - 10.1007/s11082-018-1475-3
ER  - 

@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Panjan, Peter and Kovač, Janez and Lazović, Vladimir M. and Ristoscu, Carmen and Negut, Irina and Mihailescu, Ion N.",
year = "2018",
abstract = "The oxidation behaviour and morphological modification of CrN/(Cr,V)N coatings on Si wafers were studied after UV nanosecond laser (wavelength 248 nm, pulse duration 25 ns) processing in ambient air. The evolution of the surface composition and microstructure with the number of accumulated/subsequent pulses was systematically analysed depending on the initial content of vanadium in the as-deposited coatings. Irradiation of CrN/(Cr,V)N coatings with different content of vanadium was carried out at a fluence of 0.17 J cm−2with different number of pulses. The concentration of metallic components was fairly homogeneous distributed throughout the sample. However, on surface and in sub-surface regions the contents of Cr and V are diminished due to laser-induced oxidation. The composition and thickness of forming oxides mixture, Cr2O3and V2O5, are depending on the number of applied laser pulses and the initial vanadium content. The asymmetric progress of surface morphology is characterized by the formation of grainy structures at peripheries and the appearance of cracks and irregular closed shapes in the centre of the irradiation area.",
journal = "Optical and Quantum Electronics",
title = "Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses",
volume = "50",
number = "5",
pages = "208",
doi = "10.1007/s11082-018-1475-3"
}

Petrović, S., Gaković, B. M., Panjan, P., Kovač, J., Lazović, V. M., Ristoscu, C., Negut, I.,& Mihailescu, I. N.. (2018). Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses. in Optical and Quantum Electronics, 50(5), 208.
https://doi.org/10.1007/s11082-018-1475-3

Petrović S, Gaković BM, Panjan P, Kovač J, Lazović VM, Ristoscu C, Negut I, Mihailescu IN. Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses. in Optical and Quantum Electronics. 2018;50(5):208.
doi:10.1007/s11082-018-1475-3 .

Petrović, Suzana, Gaković, Biljana M., Panjan, Peter, Kovač, Janez, Lazović, Vladimir M., Ristoscu, Carmen, Negut, Irina, Mihailescu, Ion N., "Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses" in Optical and Quantum Electronics, 50, no. 5 (2018):208,
https://doi.org/10.1007/s11082-018-1475-3 . .

TY  - JOUR
AU  - Gavrilov, Nemanja M.
AU  - Momčilović, Milan Z.
AU  - Dobrota, Ana S.
AU  - Stanković, Dalibor M.
AU  - Jokić, Bojan M.
AU  - Babić, Biljana M.
AU  - Skorodumova, Natalia V.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0257897218305838
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7727
AB  - The incorporation of trace amounts (<0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen-free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O2in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O2molecule and contribute to the decomposition of peroxide.
T2  - Surface and Coatings Technology
T1  - A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media
VL  - 349
SP  - 511
EP  - 521
DO  - 10.1016/j.surfcoat.2018.06.008
ER  - 

@article{
author = "Gavrilov, Nemanja M. and Momčilović, Milan Z. and Dobrota, Ana S. and Stanković, Dalibor M. and Jokić, Bojan M. and Babić, Biljana M. and Skorodumova, Natalia V. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
abstract = "The incorporation of trace amounts (<0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen-free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O2in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O2molecule and contribute to the decomposition of peroxide.",
journal = "Surface and Coatings Technology",
title = "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media",
volume = "349",
pages = "511-521",
doi = "10.1016/j.surfcoat.2018.06.008"
}

Gavrilov, N. M., Momčilović, M. Z., Dobrota, A. S., Stanković, D. M., Jokić, B. M., Babić, B. M., Skorodumova, N. V., Mentus, S. V.,& Pašti, I. A.. (2018). A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology, 349, 511-521.
https://doi.org/10.1016/j.surfcoat.2018.06.008

Gavrilov NM, Momčilović MZ, Dobrota AS, Stanković DM, Jokić BM, Babić BM, Skorodumova NV, Mentus SV, Pašti IA. A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology. 2018;349:511-521.
doi:10.1016/j.surfcoat.2018.06.008 .

Gavrilov, Nemanja M., Momčilović, Milan Z., Dobrota, Ana S., Stanković, Dalibor M., Jokić, Bojan M., Babić, Biljana M., Skorodumova, Natalia V., Mentus, Slavko V., Pašti, Igor A., "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media" in Surface and Coatings Technology, 349 (2018):511-521,
https://doi.org/10.1016/j.surfcoat.2018.06.008 . .

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  - CONF
AU  - Kovačević, A. G.
AU  - Petrović, Suzana
AU  - Lekić, M.
AU  - Jelenković, B. M.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12445
AB  - During interaction of femtosecond laser beam with metal surfaces, laser induced pe- riodic nanostructures, LIPSS can be formed, which may improve properties of materials. Having excellent mechanical properties, multilayer thin films, like 5x(Al/Ti)@Si, are con- venient for forming of high quality LIPSS [1] due to their multilayer structure. We have exposed the multilayer thin film metal systems 5x(Al/Ti)@Si with femtosecond beam from the laser system Coherent Mira 900 in NIR with various scanning configurations [2]. The irradiated samples have been analyzed by Tescan Mira3 SEM. The beam scanned over the surface of the samples with multi-pass and cross-directional scanning configurations with the change of polarization direction. The formation of LIPSS is most probably due to the occurence of surface plasmon polariton, which leads to the periodic distribution of energy on the sample surface. The orientation of the LIPSS is related to the direction of the beam polarization. During multi-pass scanning, LIPSS maintained its configuration. The preservation of structures occured to some extent. Depending on the accumulated energy, two forms of LIPSS were generated: “hills”, for less accumulation, and “trenches” for greater accumulation. “Hills” are non-ablative, probably are due to the build-up of the material and are parallel to the polarization direction. “Trenches” are formed by ablation and are perpendicular to the polarization direction. During cross-directional scanning, LIPSS of orthogonal directions have been generated. The value of the “hills” period was around 360 nm and the width was ∼285 nm. The values of “trenches” period fluctuated between 320 and 380 nm, while width was between 85 and 45 nm. Proposed mechanism is that, for less accumulated energy, “hills” formed, while more accumulated energy leads to the ablation and formation of “trenches”.
PB  - Moscow : Lebedev Physical Institute
C3  - UltrafastLight-2018 : International Conference on Ultrafast Optical Science : Book of Abstracts
T1  - Inducing LIPSS by multi-pass and cross-directional scanning of femtosecond beam over surface of thin metal films
SP  - 108
EP  - 108
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12445
ER  - 

@conference{
author = "Kovačević, A. G. and Petrović, Suzana and Lekić, M. and Jelenković, B. M.",
year = "2018",
abstract = "During interaction of femtosecond laser beam with metal surfaces, laser induced pe- riodic nanostructures, LIPSS can be formed, which may improve properties of materials. Having excellent mechanical properties, multilayer thin films, like 5x(Al/Ti)@Si, are con- venient for forming of high quality LIPSS [1] due to their multilayer structure. We have exposed the multilayer thin film metal systems 5x(Al/Ti)@Si with femtosecond beam from the laser system Coherent Mira 900 in NIR with various scanning configurations [2]. The irradiated samples have been analyzed by Tescan Mira3 SEM. The beam scanned over the surface of the samples with multi-pass and cross-directional scanning configurations with the change of polarization direction. The formation of LIPSS is most probably due to the occurence of surface plasmon polariton, which leads to the periodic distribution of energy on the sample surface. The orientation of the LIPSS is related to the direction of the beam polarization. During multi-pass scanning, LIPSS maintained its configuration. The preservation of structures occured to some extent. Depending on the accumulated energy, two forms of LIPSS were generated: “hills”, for less accumulation, and “trenches” for greater accumulation. “Hills” are non-ablative, probably are due to the build-up of the material and are parallel to the polarization direction. “Trenches” are formed by ablation and are perpendicular to the polarization direction. During cross-directional scanning, LIPSS of orthogonal directions have been generated. The value of the “hills” period was around 360 nm and the width was ∼285 nm. The values of “trenches” period fluctuated between 320 and 380 nm, while width was between 85 and 45 nm. Proposed mechanism is that, for less accumulated energy, “hills” formed, while more accumulated energy leads to the ablation and formation of “trenches”.",
publisher = "Moscow : Lebedev Physical Institute",
journal = "UltrafastLight-2018 : International Conference on Ultrafast Optical Science : Book of Abstracts",
title = "Inducing LIPSS by multi-pass and cross-directional scanning of femtosecond beam over surface of thin metal films",
pages = "108-108",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12445"
}

Kovačević, A. G., Petrović, S., Lekić, M.,& Jelenković, B. M.. (2018). Inducing LIPSS by multi-pass and cross-directional scanning of femtosecond beam over surface of thin metal films. in UltrafastLight-2018 : International Conference on Ultrafast Optical Science : Book of Abstracts
Moscow : Lebedev Physical Institute., 108-108.
https://hdl.handle.net/21.15107/rcub_vinar_12445

Kovačević AG, Petrović S, Lekić M, Jelenković BM. Inducing LIPSS by multi-pass and cross-directional scanning of femtosecond beam over surface of thin metal films. in UltrafastLight-2018 : International Conference on Ultrafast Optical Science : Book of Abstracts. 2018;:108-108.
https://hdl.handle.net/21.15107/rcub_vinar_12445 .

Kovačević, A. G., Petrović, Suzana, Lekić, M., Jelenković, B. M., "Inducing LIPSS by multi-pass and cross-directional scanning of femtosecond beam over surface of thin metal films" in UltrafastLight-2018 : International Conference on Ultrafast Optical Science : Book of Abstracts (2018):108-108,
https://hdl.handle.net/21.15107/rcub_vinar_12445 .

TY  - JOUR
AU  - Vlašić, Ana
AU  - Šević, Dragutin M.
AU  - Rabasović, Maja S.
AU  - Križan, Janez
AU  - Savić-Šević, Svetlana N.
AU  - Rabasović, Mihailo D.
AU  - Mitrić, Miodrag
AU  - Marinković, Bratislav P.
AU  - Nikolić, Marko G.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7625
AB  - In this paper we describe the synthesis and characterization of the Sr2CeO4:Eu3+ nanopowder and possibilities of its application for temperature and high pressure sensing. The material was prepared using simple solution combustion synthesis. X-ray powder diffraction (XRD), scanning electron microscope (SEM) and photoluminescence (PL) techniques have been used to confirm and characterize the prepared material. Time resolved analysis of emission spectra was achieved by using the streak camera system. Measured lifetime values of luminescence emission and the intensity ratios of spectral lines were used for determining the calibration curves for remote temperature sensing. We have analyzed sensitivity improvement of the intensity ratio method by using a temporal evolution of emission lines and simulation of delayed gating of one of them. Pressure effects on optical properties of Sr2CeO4: Eu3+ nanophosphor are also investigated.
T2  - Journal of Luminescence
T1  - Effects of temperature and pressure on luminescent properties of Sr 2 CeO 4: Eu3+ nanophosphor
VL  - 199
SP  - 285
EP  - 292
DO  - 10.1016/j.jlumin.2018.03.061
ER  - 

@article{
author = "Vlašić, Ana and Šević, Dragutin M. and Rabasović, Maja S. and Križan, Janez and Savić-Šević, Svetlana N. and Rabasović, Mihailo D. and Mitrić, Miodrag and Marinković, Bratislav P. and Nikolić, Marko G.",
year = "2018",
abstract = "In this paper we describe the synthesis and characterization of the Sr2CeO4:Eu3+ nanopowder and possibilities of its application for temperature and high pressure sensing. The material was prepared using simple solution combustion synthesis. X-ray powder diffraction (XRD), scanning electron microscope (SEM) and photoluminescence (PL) techniques have been used to confirm and characterize the prepared material. Time resolved analysis of emission spectra was achieved by using the streak camera system. Measured lifetime values of luminescence emission and the intensity ratios of spectral lines were used for determining the calibration curves for remote temperature sensing. We have analyzed sensitivity improvement of the intensity ratio method by using a temporal evolution of emission lines and simulation of delayed gating of one of them. Pressure effects on optical properties of Sr2CeO4: Eu3+ nanophosphor are also investigated.",
journal = "Journal of Luminescence",
title = "Effects of temperature and pressure on luminescent properties of Sr 2 CeO 4: Eu3+ nanophosphor",
volume = "199",
pages = "285-292",
doi = "10.1016/j.jlumin.2018.03.061"
}

Vlašić, A., Šević, D. M., Rabasović, M. S., Križan, J., Savić-Šević, S. N., Rabasović, M. D., Mitrić, M., Marinković, B. P.,& Nikolić, M. G.. (2018). Effects of temperature and pressure on luminescent properties of Sr 2 CeO 4: Eu3+ nanophosphor. in Journal of Luminescence, 199, 285-292.
https://doi.org/10.1016/j.jlumin.2018.03.061

Vlašić A, Šević DM, Rabasović MS, Križan J, Savić-Šević SN, Rabasović MD, Mitrić M, Marinković BP, Nikolić MG. Effects of temperature and pressure on luminescent properties of Sr 2 CeO 4: Eu3+ nanophosphor. in Journal of Luminescence. 2018;199:285-292.
doi:10.1016/j.jlumin.2018.03.061 .

Vlašić, Ana, Šević, Dragutin M., Rabasović, Maja S., Križan, Janez, Savić-Šević, Svetlana N., Rabasović, Mihailo D., Mitrić, Miodrag, Marinković, Bratislav P., Nikolić, Marko G., "Effects of temperature and pressure on luminescent properties of Sr 2 CeO 4: Eu3+ nanophosphor" in Journal of Luminescence, 199 (2018):285-292,
https://doi.org/10.1016/j.jlumin.2018.03.061 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Zamfirescu, M.
AU  - Radu, C.
AU  - Peruško, Davor
AU  - Radak, Bojan
AU  - Ristoscu, Carmen
AU  - Zdravković, Slobodan
AU  - Luculescu, C. L.
AU  - Mihailescu, Ion N.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7164
AB  - Modification of single and complex nickel-palladium samples by laser processing in the femtosecond time domain was studied. The samples were processed by focused Ti:Sapphire laser beam (Clark CPA-2101) with 775 nm laser wavelength, 2 kHz repetition rate, 200 fs pulse duration. The laser-induced morphological modifications have shown dependence on the applied fluences and number of laser pulses. The formed surface nanostructures on the single NiPd/Si and multilayer 5x(Ni/Pd)/Si systems are compared with individual Ni and Pd thin films. The results show an increase in surface roughness, formation of parallel periodic surface structures, appearance of hydrodynamic features and ablation of surface material. At low number of pulses (less than 10 pulses) and low pulse energies range (not over 1.7 mu J), the two types of laser-induced periodic surface structure (LIPSS) can be observed: low and high spatial frequency LIPSS (HSFL and LSFL). For all samples, the measured LSFL periods were 720 nm for the ripples created solely on thin film surfaces during the single pulse action. In the case of the multi-pulse irradiation, the periodicities of created LSFLs on the all investigated thin films have shown tendency to reduction with increasing of pulse energies. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films
VL  - 417
SP  - 16
EP  - 22
DO  - 10.1016/j.apsusc.2016.12.142
ER  - 

@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Zamfirescu, M. and Radu, C. and Peruško, Davor and Radak, Bojan and Ristoscu, Carmen and Zdravković, Slobodan and Luculescu, C. L. and Mihailescu, Ion N.",
year = "2017",
abstract = "Modification of single and complex nickel-palladium samples by laser processing in the femtosecond time domain was studied. The samples were processed by focused Ti:Sapphire laser beam (Clark CPA-2101) with 775 nm laser wavelength, 2 kHz repetition rate, 200 fs pulse duration. The laser-induced morphological modifications have shown dependence on the applied fluences and number of laser pulses. The formed surface nanostructures on the single NiPd/Si and multilayer 5x(Ni/Pd)/Si systems are compared with individual Ni and Pd thin films. The results show an increase in surface roughness, formation of parallel periodic surface structures, appearance of hydrodynamic features and ablation of surface material. At low number of pulses (less than 10 pulses) and low pulse energies range (not over 1.7 mu J), the two types of laser-induced periodic surface structure (LIPSS) can be observed: low and high spatial frequency LIPSS (HSFL and LSFL). For all samples, the measured LSFL periods were 720 nm for the ripples created solely on thin film surfaces during the single pulse action. In the case of the multi-pulse irradiation, the periodicities of created LSFLs on the all investigated thin films have shown tendency to reduction with increasing of pulse energies. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films",
volume = "417",
pages = "16-22",
doi = "10.1016/j.apsusc.2016.12.142"
}

Petrović, S., Gaković, B. M., Zamfirescu, M., Radu, C., Peruško, D., Radak, B., Ristoscu, C., Zdravković, S., Luculescu, C. L.,& Mihailescu, I. N.. (2017). Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films. in Applied Surface Science, 417, 16-22.
https://doi.org/10.1016/j.apsusc.2016.12.142

Petrović S, Gaković BM, Zamfirescu M, Radu C, Peruško D, Radak B, Ristoscu C, Zdravković S, Luculescu CL, Mihailescu IN. Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films. in Applied Surface Science. 2017;417:16-22.
doi:10.1016/j.apsusc.2016.12.142 .

Petrović, Suzana, Gaković, Biljana M., Zamfirescu, M., Radu, C., Peruško, Davor, Radak, Bojan, Ristoscu, Carmen, Zdravković, Slobodan, Luculescu, C. L., Mihailescu, Ion N., "Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films" in Applied Surface Science, 417 (2017):16-22,
https://doi.org/10.1016/j.apsusc.2016.12.142 . .

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  - Kovačević, Aleksander
AU  - Petrović, Suzana
AU  - Lazović, Vladimir M.
AU  - Peruško, Davor
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7165
AB  - During femtosecond interaction with surfaces, the processes of liquid and solid-state dewetting could be responsible for the generation and regrouping of nanoparticles and nanoparticle clusters. The occurrence of surface plasmon polariton most probably induces the LIPSS arrangement. We have used low-fluence scanning femtosecond beam to generate sub-wavelength periodic structures on multilayer Ni/Pd thin films on Si. The spatial period of LIPSS increases with the change of scanning directions in respect to the polarization direction due to the phase difference increase between the incoming and induced oscillations. (c) 2017 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam
VL  - 417
SP  - 155
EP  - 159
DO  - 10.1016/j.apsusc.2017.03.141
ER  - 

@article{
author = "Kovačević, Aleksander and Petrović, Suzana and Lazović, Vladimir M. and Peruško, Davor and Pantelić, Dejan and Jelenković, Branislav",
year = "2017",
abstract = "During femtosecond interaction with surfaces, the processes of liquid and solid-state dewetting could be responsible for the generation and regrouping of nanoparticles and nanoparticle clusters. The occurrence of surface plasmon polariton most probably induces the LIPSS arrangement. We have used low-fluence scanning femtosecond beam to generate sub-wavelength periodic structures on multilayer Ni/Pd thin films on Si. The spatial period of LIPSS increases with the change of scanning directions in respect to the polarization direction due to the phase difference increase between the incoming and induced oscillations. (c) 2017 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam",
volume = "417",
pages = "155-159",
doi = "10.1016/j.apsusc.2017.03.141"
}

Kovačević, A., Petrović, S., Lazović, V. M., Peruško, D., Pantelić, D.,& Jelenković, B.. (2017). Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam. in Applied Surface Science, 417, 155-159.
https://doi.org/10.1016/j.apsusc.2017.03.141

Kovačević A, Petrović S, Lazović VM, Peruško D, Pantelić D, Jelenković B. Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam. in Applied Surface Science. 2017;417:155-159.
doi:10.1016/j.apsusc.2017.03.141 .

Kovačević, Aleksander, Petrović, Suzana, Lazović, Vladimir M., Peruško, Davor, Pantelić, Dejan, Jelenković, Branislav, "Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam" in Applied Surface Science, 417 (2017):155-159,
https://doi.org/10.1016/j.apsusc.2017.03.141 . .

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Tsibidis, George D.
AU  - Skoulas, Evangelos
AU  - Petrović, Suzana
AU  - Vasić, Borislav Z.
AU  - Stratakis, Emmanuel
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1880
AB  - The interaction of ultra-short laser pulses with Titanium/Aluminium (Ti/Al) nano-layered thin film was investigated. The sample composed of alternating Ti and Al layers of a few nanometres thick was deposited by ion-sputtering. A single pulse irradiation experiment was conducted in an ambient air environment using focused and linearly polarized femtosecond laser pulses for the investigation of the ablation effects. The laser induced morphological changes and the composition were characterized using several microscopy techniques and energy dispersive X-ray spectroscopy. The following results were obtained: (i) at low values of pulse energy/fluence, ablation of the upper Ti layer only was observed; (ii) at higher laser fluence, a two-step ablation of Ti and Al layers takes place, followed by partial removal of the nano-layered film. The experimental observations were supported by a theoretical model accounting for the thermal response of the multiple layered structure upon irradiation with ultra-short laser pulses. Published by AIP Publishing.
T2  - Journal of Applied Physics
T1  - Partial ablation of Ti/Al nano-layer thin film by single femtosecond laser pulse
VL  - 122
IS  - 22
DO  - 10.1063/1.5016548
ER  - 

@article{
author = "Gaković, Biljana M. and Tsibidis, George D. and Skoulas, Evangelos and Petrović, Suzana and Vasić, Borislav Z. and Stratakis, Emmanuel",
year = "2017",
abstract = "The interaction of ultra-short laser pulses with Titanium/Aluminium (Ti/Al) nano-layered thin film was investigated. The sample composed of alternating Ti and Al layers of a few nanometres thick was deposited by ion-sputtering. A single pulse irradiation experiment was conducted in an ambient air environment using focused and linearly polarized femtosecond laser pulses for the investigation of the ablation effects. The laser induced morphological changes and the composition were characterized using several microscopy techniques and energy dispersive X-ray spectroscopy. The following results were obtained: (i) at low values of pulse energy/fluence, ablation of the upper Ti layer only was observed; (ii) at higher laser fluence, a two-step ablation of Ti and Al layers takes place, followed by partial removal of the nano-layered film. The experimental observations were supported by a theoretical model accounting for the thermal response of the multiple layered structure upon irradiation with ultra-short laser pulses. Published by AIP Publishing.",
journal = "Journal of Applied Physics",
title = "Partial ablation of Ti/Al nano-layer thin film by single femtosecond laser pulse",
volume = "122",
number = "22",
doi = "10.1063/1.5016548"
}

Gaković, B. M., Tsibidis, G. D., Skoulas, E., Petrović, S., Vasić, B. Z.,& Stratakis, E.. (2017). Partial ablation of Ti/Al nano-layer thin film by single femtosecond laser pulse. in Journal of Applied Physics, 122(22).
https://doi.org/10.1063/1.5016548

Gaković BM, Tsibidis GD, Skoulas E, Petrović S, Vasić BZ, Stratakis E. Partial ablation of Ti/Al nano-layer thin film by single femtosecond laser pulse. in Journal of Applied Physics. 2017;122(22).
doi:10.1063/1.5016548 .

Gaković, Biljana M., Tsibidis, George D., Skoulas, Evangelos, Petrović, Suzana, Vasić, Borislav Z., Stratakis, Emmanuel, "Partial ablation of Ti/Al nano-layer thin film by single femtosecond laser pulse" in Journal of Applied Physics, 122, no. 22 (2017),
https://doi.org/10.1063/1.5016548 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Panjan, Peter
AU  - Mitrić, Miodrag
AU  - Pjević, Dejan J.
AU  - Kovačević, Aleksander
AU  - Jelenković, Branislav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1746
AB  - Formation of periodic nanostructures on the Ti/5x(Al/Ti)/Si multilayers induced by picosecond laser pulses is studied in order to better understand the formation of a laser-induced periodic surface structure (LIPSS). At fluence slightly below the ablation threshold, the formation of low spatial frequency-LIPSS (LSFL) oriented perpendicular to the direction of the laser polarization is observed on the irradiated area. Prolonged irradiation while scanning results in the formation of a high spatial frequency-LIPSS (HSFL), on top of the LSFLs, creating a co-existence parallel periodic structure. HSFL was oriented parallel to the incident laser polarization. Intermixing between the Al and Ti layers with the formation of Al-Ti intermetallic compounds was achieved during the irradiation. The intermetallic region was formed mostly within the heat affected zone of the sample. Surface segregation of aluminium with partial ablation of the top layer of titanium was followed by the formation of an ultra-thin Al2O3 film on the surface of the multi-layered structure. Published by AIP Publishing.
T2  - Journal of Applied Physics
T1  - Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers
VL  - 122
IS  - 11
DO  - 10.1063/1.4985830
ER  - 

@article{
author = "Petrović, Suzana and Peruško, Davor and Kovač, Janez and Panjan, Peter and Mitrić, Miodrag and Pjević, Dejan J. and Kovačević, Aleksander and Jelenković, Branislav",
year = "2017",
abstract = "Formation of periodic nanostructures on the Ti/5x(Al/Ti)/Si multilayers induced by picosecond laser pulses is studied in order to better understand the formation of a laser-induced periodic surface structure (LIPSS). At fluence slightly below the ablation threshold, the formation of low spatial frequency-LIPSS (LSFL) oriented perpendicular to the direction of the laser polarization is observed on the irradiated area. Prolonged irradiation while scanning results in the formation of a high spatial frequency-LIPSS (HSFL), on top of the LSFLs, creating a co-existence parallel periodic structure. HSFL was oriented parallel to the incident laser polarization. Intermixing between the Al and Ti layers with the formation of Al-Ti intermetallic compounds was achieved during the irradiation. The intermetallic region was formed mostly within the heat affected zone of the sample. Surface segregation of aluminium with partial ablation of the top layer of titanium was followed by the formation of an ultra-thin Al2O3 film on the surface of the multi-layered structure. Published by AIP Publishing.",
journal = "Journal of Applied Physics",
title = "Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers",
volume = "122",
number = "11",
doi = "10.1063/1.4985830"
}

Petrović, S., Peruško, D., Kovač, J., Panjan, P., Mitrić, M., Pjević, D. J., Kovačević, A.,& Jelenković, B.. (2017). Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers. in Journal of Applied Physics, 122(11).
https://doi.org/10.1063/1.4985830

Petrović S, Peruško D, Kovač J, Panjan P, Mitrić M, Pjević DJ, Kovačević A, Jelenković B. Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers. in Journal of Applied Physics. 2017;122(11).
doi:10.1063/1.4985830 .

Petrović, Suzana, Peruško, Davor, Kovač, Janez, Panjan, Peter, Mitrić, Miodrag, Pjević, Dejan J., Kovačević, Aleksander, Jelenković, Branislav, "Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers" in Journal of Applied Physics, 122, no. 11 (2017),
https://doi.org/10.1063/1.4985830 . .

TY  - JOUR
AU  - Kaluđerović, Branka V.
AU  - Srećković, Milesa
AU  - Janićijević, Milovan
AU  - Kovačević, Aleksander
AU  - Bojanić, Slobodan
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1681
AB  - The carbon fiber based composites: carbon fiber reinforced plastic and 3D carbon fiber reinforced carbon composites were exposed to the Nd3+: YAG laser beams (1064 nm). Experimental parameters for the interaction of the laser beam with 1.5 Hz pulse frequency and with pulse duration 0.7 ms varied: energy density between 128 and 1915 J cm(-2), pulse energy from 1 to 3 J and mean power in the range between 0.4 and 6.5 kW. Apparently, the energy absorbed by the composite samples was mainly converted into thermal energy, causing a range of damages, from instantaneous evaporation to cracking and melting, which resulted in a crater-like damage. Program ImageJ was executed for quantitative analysis of generated damages based on micrographs obtained by SEM and light microscopes. Obtaied results enable identification of the laser induced changes in the material. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Composites: Part B: Engineering
T1  - Influence of Nd3+: YAG laser irradiation on the properties of composites with carbon fibers
VL  - 125
SP  - 165
EP  - 174
DO  - 10.1016/j.compositesb.2017.05.076
ER  - 

@article{
author = "Kaluđerović, Branka V. and Srećković, Milesa and Janićijević, Milovan and Kovačević, Aleksander and Bojanić, Slobodan",
year = "2017",
abstract = "The carbon fiber based composites: carbon fiber reinforced plastic and 3D carbon fiber reinforced carbon composites were exposed to the Nd3+: YAG laser beams (1064 nm). Experimental parameters for the interaction of the laser beam with 1.5 Hz pulse frequency and with pulse duration 0.7 ms varied: energy density between 128 and 1915 J cm(-2), pulse energy from 1 to 3 J and mean power in the range between 0.4 and 6.5 kW. Apparently, the energy absorbed by the composite samples was mainly converted into thermal energy, causing a range of damages, from instantaneous evaporation to cracking and melting, which resulted in a crater-like damage. Program ImageJ was executed for quantitative analysis of generated damages based on micrographs obtained by SEM and light microscopes. Obtaied results enable identification of the laser induced changes in the material. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Composites: Part B: Engineering",
title = "Influence of Nd3+: YAG laser irradiation on the properties of composites with carbon fibers",
volume = "125",
pages = "165-174",
doi = "10.1016/j.compositesb.2017.05.076"
}

Kaluđerović, B. V., Srećković, M., Janićijević, M., Kovačević, A.,& Bojanić, S.. (2017). Influence of Nd3+: YAG laser irradiation on the properties of composites with carbon fibers. in Composites: Part B: Engineering, 125, 165-174.
https://doi.org/10.1016/j.compositesb.2017.05.076

Kaluđerović BV, Srećković M, Janićijević M, Kovačević A, Bojanić S. Influence of Nd3+: YAG laser irradiation on the properties of composites with carbon fibers. in Composites: Part B: Engineering. 2017;125:165-174.
doi:10.1016/j.compositesb.2017.05.076 .

Kaluđerović, Branka V., Srećković, Milesa, Janićijević, Milovan, Kovačević, Aleksander, Bojanić, Slobodan, "Influence of Nd3+: YAG laser irradiation on the properties of composites with carbon fibers" in Composites: Part B: Engineering, 125 (2017):165-174,
https://doi.org/10.1016/j.compositesb.2017.05.076 . .

TY  - JOUR
AU  - Kovačević, Aleksander
AU  - Ristić-Đurović, Jasna L.
AU  - Lekic, Marina
AU  - Hadžić, Branka B.
AU  - Abudagel, Giuma Saleh Isa
AU  - Petričević, Slobodan
AU  - Mihailovic, Pedja
AU  - Matović, Branko
AU  - Dramlić, Dragan M.
AU  - Brajovic, Ljiljana M.
AU  - Romčević, Nebojša Ž.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1235
AB  - High quality bismuth germanium oxide single crystals were irradiated by a femtosecond pulsed laser beam of increasing power. Analyses performed on irradiated and unirradiated samples showed significant changes in transmittance, transmission spectra, sample color, Raman spectra, X-ray diffraction (XRD) pattern, Verdet constant, magneto-optical property, and absorption coefficient. After irradiation, the transmission spectra values increased whereas anisotropy detected in the transmission spectra of unirradiated samples disappeared. The change of color caused by irradiation was noticeable to the naked eye. The XRD measurements confirmed structural changes induced by laser irradiation, i.e., the laser-beam-incident side of the sample became almost amorphous, whereas the side opposite to the incident can be indexed to the Bi12GeO20 compound. Irradiation caused increase of Raman spectra peaks with the exception of crystal peaks of type E, which disappeared. The femtosecond pulsed laser irradiation can be used to improve bismuth germanium oxide single crystal optical properties. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Influence of femtosecond pulsed laser irradiation on bismuth germanium oxide single crystal properties
VL  - 83
SP  - 284
EP  - 289
DO  - 10.1016/j.materresbull.2016.06.023
ER  - 

@article{
author = "Kovačević, Aleksander and Ristić-Đurović, Jasna L. and Lekic, Marina and Hadžić, Branka B. and Abudagel, Giuma Saleh Isa and Petričević, Slobodan and Mihailovic, Pedja and Matović, Branko and Dramlić, Dragan M. and Brajovic, Ljiljana M. and Romčević, Nebojša Ž.",
year = "2016",
abstract = "High quality bismuth germanium oxide single crystals were irradiated by a femtosecond pulsed laser beam of increasing power. Analyses performed on irradiated and unirradiated samples showed significant changes in transmittance, transmission spectra, sample color, Raman spectra, X-ray diffraction (XRD) pattern, Verdet constant, magneto-optical property, and absorption coefficient. After irradiation, the transmission spectra values increased whereas anisotropy detected in the transmission spectra of unirradiated samples disappeared. The change of color caused by irradiation was noticeable to the naked eye. The XRD measurements confirmed structural changes induced by laser irradiation, i.e., the laser-beam-incident side of the sample became almost amorphous, whereas the side opposite to the incident can be indexed to the Bi12GeO20 compound. Irradiation caused increase of Raman spectra peaks with the exception of crystal peaks of type E, which disappeared. The femtosecond pulsed laser irradiation can be used to improve bismuth germanium oxide single crystal optical properties. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Influence of femtosecond pulsed laser irradiation on bismuth germanium oxide single crystal properties",
volume = "83",
pages = "284-289",
doi = "10.1016/j.materresbull.2016.06.023"
}

Kovačević, A., Ristić-Đurović, J. L., Lekic, M., Hadžić, B. B., Abudagel, G. S. I., Petričević, S., Mihailovic, P., Matović, B., Dramlić, D. M., Brajovic, L. M.,& Romčević, N. Ž.. (2016). Influence of femtosecond pulsed laser irradiation on bismuth germanium oxide single crystal properties. in Materials Research Bulletin, 83, 284-289.
https://doi.org/10.1016/j.materresbull.2016.06.023

Kovačević A, Ristić-Đurović JL, Lekic M, Hadžić BB, Abudagel GSI, Petričević S, Mihailovic P, Matović B, Dramlić DM, Brajovic LM, Romčević NŽ. Influence of femtosecond pulsed laser irradiation on bismuth germanium oxide single crystal properties. in Materials Research Bulletin. 2016;83:284-289.
doi:10.1016/j.materresbull.2016.06.023 .

Kovačević, Aleksander, Ristić-Đurović, Jasna L., Lekic, Marina, Hadžić, Branka B., Abudagel, Giuma Saleh Isa, Petričević, Slobodan, Mihailovic, Pedja, Matović, Branko, Dramlić, Dragan M., Brajovic, Ljiljana M., Romčević, Nebojša Ž., "Influence of femtosecond pulsed laser irradiation on bismuth germanium oxide single crystal properties" in Materials Research Bulletin, 83 (2016):284-289,
https://doi.org/10.1016/j.materresbull.2016.06.023 . .

TY  - JOUR
AU  - Rabasović, Mihailo D.
AU  - Murić, Branka D.
AU  - Celebonovic, Vladan
AU  - Mitrić, Miodrag
AU  - Jelenković, Branislav
AU  - Nikolić, Marko G.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1305
AB  - In this work we investigated the photoluminescence properties of Y2O3: Er3+, Eu3+ as a function of temperature and the possibility to use this material as a temperature sensor. Photoluminescence emission measurements with 532 nm laser excitation were recorded in the temperature range from 303 up to 573 K. The measured intensity ratio of erbium S-4(3/2) - GT I-4(15/ 2) and europium D-5(0) - GT F-7(2) emission lines was used for determination of the temperature calibration curve. These emission lines are intense, narrow and well defined. The distance between the lines, being 47 nm, can be easily measured even with a low-resolution spectrometer. The calculated relative sensitivity of the temperature sensor was 1.4% K-1 at 303 K, in the physiological temperature range, meaning that it could be successfully applied in biological studies.
T2  - Journal of Physics. D: Applied Physics
T1  - Luminescence thermometry via the two-dopant intensity ratio of Y2O3: Er3+, Eu3+
VL  - 49
IS  - 48
DO  - 10.1088/0022-3727/49/48/485104
ER  - 

@article{
author = "Rabasović, Mihailo D. and Murić, Branka D. and Celebonovic, Vladan and Mitrić, Miodrag and Jelenković, Branislav and Nikolić, Marko G.",
year = "2016",
abstract = "In this work we investigated the photoluminescence properties of Y2O3: Er3+, Eu3+ as a function of temperature and the possibility to use this material as a temperature sensor. Photoluminescence emission measurements with 532 nm laser excitation were recorded in the temperature range from 303 up to 573 K. The measured intensity ratio of erbium S-4(3/2) - GT I-4(15/ 2) and europium D-5(0) - GT F-7(2) emission lines was used for determination of the temperature calibration curve. These emission lines are intense, narrow and well defined. The distance between the lines, being 47 nm, can be easily measured even with a low-resolution spectrometer. The calculated relative sensitivity of the temperature sensor was 1.4% K-1 at 303 K, in the physiological temperature range, meaning that it could be successfully applied in biological studies.",
journal = "Journal of Physics. D: Applied Physics",
title = "Luminescence thermometry via the two-dopant intensity ratio of Y2O3: Er3+, Eu3+",
volume = "49",
number = "48",
doi = "10.1088/0022-3727/49/48/485104"
}

Rabasović, M. D., Murić, B. D., Celebonovic, V., Mitrić, M., Jelenković, B.,& Nikolić, M. G.. (2016). Luminescence thermometry via the two-dopant intensity ratio of Y2O3: Er3+, Eu3+. in Journal of Physics. D: Applied Physics, 49(48).
https://doi.org/10.1088/0022-3727/49/48/485104

Rabasović MD, Murić BD, Celebonovic V, Mitrić M, Jelenković B, Nikolić MG. Luminescence thermometry via the two-dopant intensity ratio of Y2O3: Er3+, Eu3+. in Journal of Physics. D: Applied Physics. 2016;49(48).
doi:10.1088/0022-3727/49/48/485104 .

Rabasović, Mihailo D., Murić, Branka D., Celebonovic, Vladan, Mitrić, Miodrag, Jelenković, Branislav, Nikolić, Marko G., "Luminescence thermometry via the two-dopant intensity ratio of Y2O3: Er3+, Eu3+" in Journal of Physics. D: Applied Physics, 49, no. 48 (2016),
https://doi.org/10.1088/0022-3727/49/48/485104 . .

TY  - JOUR
AU  - Salatić, Branislav
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Čekada, Miha
AU  - Panjan, Peter
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/858
AB  - The surface morphology of the ablation craters created in the multilayer 10x(Al/Ti)/Si system by nanosecond laser pulses at single- and dual wavelength has been studied experimentally and numerically. A complex multilayer thin film including ten (Al/Ti) bilayers deposited by ion sputtering on Si(1 0 0) substrate to a total thickness of 260 nm were illuminated at different laser irradiance in the range 0.25-3.5 x 10(9)W cm(-2). Single pulse laser irradiation was done at normal incidence in air, with the single wavelength, either at 532 nm or 1064 nm or with both laser light simultaneously in the ratio of 1: 10 for energy per pulse between second harmonic and 1064 nm. Most of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the sample surface. The results show an increase in surface roughness, formation of specific nanostructures, appearance of hydrodynamic features and ablation of surface material with crater formation. Applying a small fraction (10%) of the second harmonic in dual-wavelength pulses, a modification of the 10x(Al/Ti)/Si system by a single laser pulse was reflected in the formation of wider and/or deeper craters. Numerical calculations show that the main physical mechanism in ablation process is normal evaporation without phase explosion. The calculated and experimental results agree relatively well for the whole irradiance range, what makes the model applicable to complex Al/Ti multilayer systems. (C) 2015 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system
VL  - 360
SP  - 559
EP  - 565
DO  - 10.1016/j.apsusc.2015.10.203
ER  - 

@article{
author = "Salatić, Branislav and Petrović, Suzana and Peruško, Davor and Čekada, Miha and Panjan, Peter and Pantelić, Dejan and Jelenković, Branislav",
year = "2016",
abstract = "The surface morphology of the ablation craters created in the multilayer 10x(Al/Ti)/Si system by nanosecond laser pulses at single- and dual wavelength has been studied experimentally and numerically. A complex multilayer thin film including ten (Al/Ti) bilayers deposited by ion sputtering on Si(1 0 0) substrate to a total thickness of 260 nm were illuminated at different laser irradiance in the range 0.25-3.5 x 10(9)W cm(-2). Single pulse laser irradiation was done at normal incidence in air, with the single wavelength, either at 532 nm or 1064 nm or with both laser light simultaneously in the ratio of 1: 10 for energy per pulse between second harmonic and 1064 nm. Most of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the sample surface. The results show an increase in surface roughness, formation of specific nanostructures, appearance of hydrodynamic features and ablation of surface material with crater formation. Applying a small fraction (10%) of the second harmonic in dual-wavelength pulses, a modification of the 10x(Al/Ti)/Si system by a single laser pulse was reflected in the formation of wider and/or deeper craters. Numerical calculations show that the main physical mechanism in ablation process is normal evaporation without phase explosion. The calculated and experimental results agree relatively well for the whole irradiance range, what makes the model applicable to complex Al/Ti multilayer systems. (C) 2015 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system",
volume = "360",
pages = "559-565",
doi = "10.1016/j.apsusc.2015.10.203"
}

Salatić, B., Petrović, S., Peruško, D., Čekada, M., Panjan, P., Pantelić, D.,& Jelenković, B.. (2016). Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system. in Applied Surface Science
Elsevier., 360, 559-565.
https://doi.org/10.1016/j.apsusc.2015.10.203

Salatić B, Petrović S, Peruško D, Čekada M, Panjan P, Pantelić D, Jelenković B. Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system. in Applied Surface Science. 2016;360:559-565.
doi:10.1016/j.apsusc.2015.10.203 .

Salatić, Branislav, Petrović, Suzana, Peruško, Davor, Čekada, Miha, Panjan, Peter, Pantelić, Dejan, Jelenković, Branislav, "Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system" in Applied Surface Science, 360 (2016):559-565,
https://doi.org/10.1016/j.apsusc.2015.10.203 . .

TY  - JOUR
AU  - Salatić, Branislav
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Čekada, Miha
AU  - Jelenković, Branislav
AU  - Pantelić, Dejan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1108
AB  - A study of the effects of laser irradiation on the morphology and composition of Ni/Ti multilayers induced by nanosecond laser pulses at different wavelengths is reported. Irradiation of complex 109(Ni/Ti)/Si sample was done by a Nd:YAG laser which operate at a 1064 nm wavelength, frequency doubled wavelength (532 nm) and dual-wavelength (1064 and 532 nm). The following surface morphological changes were observed: (1) ablation of the thin film during the first laser pulse and (2) appearance of some nanostructures (mosaic structure) in the irradiated region. After action of one pulse, the boundary of damage area was relatively sharp at low pulse energy, whereas it was diffuse after irradiation with higher energy per pulse. The results obtained show that laser irradiation induced mixing between Ni and Ti layers which creates conditions for the formation of intermetallic compounds. A numerical model was used to predict ablation depths and temperatures inside the material during the time. The model prediction shows a close agreement with experimental data.
T2  - Optical and Quantum Electronics
T1  - Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths
VL  - 48
IS  - 6
DO  - 10.1007/s11082-016-0503-4
ER  - 

@article{
author = "Salatić, Branislav and Petrović, Suzana and Peruško, Davor and Čekada, Miha and Jelenković, Branislav and Pantelić, Dejan",
year = "2016",
abstract = "A study of the effects of laser irradiation on the morphology and composition of Ni/Ti multilayers induced by nanosecond laser pulses at different wavelengths is reported. Irradiation of complex 109(Ni/Ti)/Si sample was done by a Nd:YAG laser which operate at a 1064 nm wavelength, frequency doubled wavelength (532 nm) and dual-wavelength (1064 and 532 nm). The following surface morphological changes were observed: (1) ablation of the thin film during the first laser pulse and (2) appearance of some nanostructures (mosaic structure) in the irradiated region. After action of one pulse, the boundary of damage area was relatively sharp at low pulse energy, whereas it was diffuse after irradiation with higher energy per pulse. The results obtained show that laser irradiation induced mixing between Ni and Ti layers which creates conditions for the formation of intermetallic compounds. A numerical model was used to predict ablation depths and temperatures inside the material during the time. The model prediction shows a close agreement with experimental data.",
journal = "Optical and Quantum Electronics",
title = "Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths",
volume = "48",
number = "6",
doi = "10.1007/s11082-016-0503-4"
}

Salatić, B., Petrović, S., Peruško, D., Čekada, M., Jelenković, B.,& Pantelić, D.. (2016). Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths. in Optical and Quantum Electronics, 48(6).
https://doi.org/10.1007/s11082-016-0503-4

Salatić B, Petrović S, Peruško D, Čekada M, Jelenković B, Pantelić D. Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths. in Optical and Quantum Electronics. 2016;48(6).
doi:10.1007/s11082-016-0503-4 .

Salatić, Branislav, Petrović, Suzana, Peruško, Davor, Čekada, Miha, Jelenković, Branislav, Pantelić, Dejan, "Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths" in Optical and Quantum Electronics, 48, no. 6 (2016),
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