Petrović, Suzana

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Authority KeyName Variants
orcid::0000-0002-8894-692X
  • Petrović, Suzana (61)
Projects
Fabrication and characterization of nano-photonic functional structrues in biomedicine and informatics Effects of laser radiation and plasma on novel materials in their synthesis, modification, and analysis
Physical processes in the synthesis of advanced nanostructured materials SPIRIT - Support of Public and Industrial Research using Ion Beam Technology
Holographic methods for generation of specific wave-fronts to better control quantum coherent effects in laser-atom interactions Physics of Ordered Nanostructures and New Materials in Photonics
Spektroskopska i laserska istraživanja površina, plazme i životne sredine SILAMPS - Silicon integrated lasers and optical amplifiers
NFFA-Europe - Nanoscience Foundries and Fine Analysis - Europe Slovenian Research Agency, Ministry of Science, Education, and Sports of the Republic of Croatia, COST Action [MP0903 Nanoalloy]
Belarusian Republican Foundation for Fundamental Research [F11SRB-004] COST Action [MP0903]
COST Action [MP0903 Nanoalloy], Center for Multidisciplinary Studies, Serbia COST ActionMP1208
European Community [CM1104] European Community, COST Action [CM1104]
European Community, COST Action, [CM1104] European Community, COST Action [CM1104], Slovenian Research Agency, Ministry of Science, Education, and Sports of the Republic of Croatia
European Community, COST Action [MP1203] European Community [COST Action MP1203, COST Action MP1208]
European Community, COST Action (MP1208) European Community, COST Action [MP1208]
European Community, COST Action [MP1208], National Authority for Research and Innovation in the frame of Nucleus programme [304/2011, 4N/2016] Functional, Functionalized and Advanced Nanomaterials
Kvantna i optička interferometrija Ministry of Science and Environmental Protection of the Republic of Serbia [OI 141013], International Atomic Energy Agency, Vienna
Ministry of Science and Technological Development of the Republic of Serbia [142065], Applications of Laser-plasma Studies to Particle Acceleration, Laboratory Astrophysics, Laser Induced Nuclear Reactions and the Fast Ignition Approach to Internal Confinement Fusions [COST-P14] Ministry of Science and Technological Development of the Republic of Serbia [142065], Ministry of Science and Technology of the Republic of Slovenia
Ministry of Science and Technological Development of the Republic of Serbia, Ministry of Science and Technology of the Republic of Slovenia, Vinca Institute of Nuclear Sciences in Belgrade, Jozef Stefan Institute, Ljubljana Ministry of Science and Technological Development of the Republic of Serbia [OI-141013], EPSRC (UK Engineering and Physical Sciences Research Council) [EP/D032210/1]

Author's Bibliography

Molding Wetting by Laser-Induced Nanostructures

Kovačević, Aleksander G.; Petrović, Suzana; Mimidis, Alexandros; Stratakis, Emmanuel; Pantelić, Dejan; Kolarić, Branko

(2020)

TY  - JOUR
AU  - Kovačević, Aleksander G.
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 G. 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. G., 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 AG, 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 G., 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 . .

Inducing LIPSS on multilayer thin metal films by femtosecond laser beam of different orientations

Kovačević, Aleksander G.; Petrović, Suzana; Salatić, Branislav; Lekić, Marina; Vasić, Borislav Z.; Gajić, Radoš; Pantelić, Dejan; Jelenković, Branislav M.

(2020)

TY  - JOUR
AU  - Kovačević, Aleksander G.
AU  - Petrović, Suzana
AU  - Salatić, Branislav
AU  - Lekić, Marina
AU  - Vasić, Borislav Z.
AU  - Gajić, Radoš
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav M.
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 G. and Petrović, Suzana and Salatić, Branislav and Lekić, Marina and Vasić, Borislav Z. and Gajić, Radoš and Pantelić, Dejan and Jelenković, Branislav M.",
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. G., Petrović, S., Salatić, B., Lekić, M., Vasić, B. Z., Gajić, R., Pantelić, D.,& Jelenković, B. M.. (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 AG, Petrović S, Salatić B, Lekić M, Vasić BZ, Gajić R, Pantelić D, Jelenković BM. 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 G., Petrović, Suzana, Salatić, Branislav, Lekić, Marina, Vasić, Borislav Z., Gajić, Radoš, Pantelić, Dejan, Jelenković, Branislav M., "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 . .

Laser-assisted surface texturing of Ti/Zr multilayers for mesenchymal stem cell response

Petrović, Suzana; Peruško, Davor; Skoulas, E.; Kovač, Janez; Mitrić, Miodrag; Potočnik, Jelena; Rakočević, Zlatko Lj.; Stratakis, E.

(2019)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Skoulas, E.
AU  - Kovač, Janez
AU  - Mitrić, Miodrag
AU  - Potočnik, Jelena
AU  - Rakočević, Zlatko Lj.
AU  - Stratakis, E.
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, E. and Kovač, Janez and Mitrić, Miodrag and Potočnik, Jelena and Rakočević, Zlatko Lj. and Stratakis, E.",
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, E., Kovač, Janez, Mitrić, Miodrag, Potočnik, Jelena, Rakočević, Zlatko Lj., Stratakis, E., "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 . .
2
2
2

Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses

Petrović, Suzana; Gaković, Biljana M.; Panjan, Peter; Kovač, Janez; Lazović, Vladimir M.; Ristoscu, Carmen; Negut, Irina; Mihailescu, Ion N.

(2018)

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  - http://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 . .

Laser induced mixing in multilayered Ti/Ta thin film structures

Obradović, Marko O.; Kovač, Janez; Petrović, Suzana; Lazović, Vladimir M.; Salatić, Branislav; Ciganović, Jovan; Pjević, Dejan J.; Milosavljević, Momir; Peruško, Davor

(2018)

TY  - JOUR
AU  - Obradović, Marko O.
AU  - Kovač, Janez
AU  - Petrović, Suzana
AU  - Lazović, Vladimir M.
AU  - Salatić, Branislav
AU  - Ciganović, Jovan
AU  - Pjević, Dejan J.
AU  - Milosavljević, Momir
AU  - Peruško, Davor
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1525-x
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7721
AB  - The possibility of interlayer mixing in a Ti/Ta multilayer system, induced by laser irradiation, was the main purpose of these experiments. Ti/Ta multilayer system, consisting of ten alternating Ti and Ta thin films and covered by slightly thicker Ti layer, was deposited on Si (100) wafers to a total thickness of 205 nm. Laser irradiation was performed in air by picoseconds Nd:YAG laser pulses in defocused regime with fluences of 0.057 and 0.11 J cm−2. Laser beam was scanned over the 5 × 5 mm surface area with different steps along y-axes. Structural and compositional characterisation was done by auger electron spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. Laser processing at lower fluence caused only oxidation of the top Ti layer, despite of the number of applied laser pulses. Interlayer mixing was not observed. Application of laser pulses at fluence of 0.11 J cm−2caused partial and/or complete ablation of deposited layers. In partially ablated regions considerable mixing between Ti and Ta films was registered.
T2  - Optical and Quantum Electronics
T1  - Laser induced mixing in multilayered Ti/Ta thin film structures
VL  - 50
IS  - 6
SP  - 257
DO  - 10.1007/s11082-018-1525-x
ER  - 
@article{
author = "Obradović, Marko O. and Kovač, Janez and Petrović, Suzana and Lazović, Vladimir M. and Salatić, Branislav and Ciganović, Jovan and Pjević, Dejan J. and Milosavljević, Momir and Peruško, Davor",
year = "2018",
abstract = "The possibility of interlayer mixing in a Ti/Ta multilayer system, induced by laser irradiation, was the main purpose of these experiments. Ti/Ta multilayer system, consisting of ten alternating Ti and Ta thin films and covered by slightly thicker Ti layer, was deposited on Si (100) wafers to a total thickness of 205 nm. Laser irradiation was performed in air by picoseconds Nd:YAG laser pulses in defocused regime with fluences of 0.057 and 0.11 J cm−2. Laser beam was scanned over the 5 × 5 mm surface area with different steps along y-axes. Structural and compositional characterisation was done by auger electron spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. Laser processing at lower fluence caused only oxidation of the top Ti layer, despite of the number of applied laser pulses. Interlayer mixing was not observed. Application of laser pulses at fluence of 0.11 J cm−2caused partial and/or complete ablation of deposited layers. In partially ablated regions considerable mixing between Ti and Ta films was registered.",
journal = "Optical and Quantum Electronics",
title = "Laser induced mixing in multilayered Ti/Ta thin film structures",
volume = "50",
number = "6",
pages = "257",
doi = "10.1007/s11082-018-1525-x"
}
Obradović, M. O., Kovač, J., Petrović, S., Lazović, V. M., Salatić, B., Ciganović, J., Pjević, D. J., Milosavljević, M.,& Peruško, D.. (2018). Laser induced mixing in multilayered Ti/Ta thin film structures. in Optical and Quantum Electronics, 50(6), 257.
https://doi.org/10.1007/s11082-018-1525-x
Obradović MO, Kovač J, Petrović S, Lazović VM, Salatić B, Ciganović J, Pjević DJ, Milosavljević M, Peruško D. Laser induced mixing in multilayered Ti/Ta thin film structures. in Optical and Quantum Electronics. 2018;50(6):257.
doi:10.1007/s11082-018-1525-x .
Obradović, Marko O., Kovač, Janez, Petrović, Suzana, Lazović, Vladimir M., Salatić, Branislav, Ciganović, Jovan, Pjević, Dejan J., Milosavljević, Momir, Peruško, Davor, "Laser induced mixing in multilayered Ti/Ta thin film structures" in Optical and Quantum Electronics, 50, no. 6 (2018):257,
https://doi.org/10.1007/s11082-018-1525-x . .

Femtosecond laser processing of NiPd single and 5x(Ni/Pd) multilayer thin films

Petrović, Suzana; Gaković, Biljana M.; Zamfirescu, M.; Radu, C.; Peruško, Davor; Radak, Bojan; Ristoscu, Carmen; Zdravković, Slobodan; Luculescu, C. L.; Mihailescu, Ion N.

(2017)

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  - http://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 . .
2
2
2

Design of co-existence parallel periodic surface structure induced by picosecond laser pulses on the Al/Ti multilayers

Petrović, Suzana; Peruško, Davor; Kovač, Janez; Panjan, Peter; Mitrić, Miodrag; Pjević, Dejan J.; Kovacevic, A.; Jelenković, Branislav

(2017)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Panjan, Peter
AU  - Mitrić, Miodrag
AU  - Pjević, Dejan J.
AU  - Kovacevic, A.
AU  - Jelenković, Branislav
PY  - 2017
UR  - http://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 Kovacevic, A. 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., Kovacevic, 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, Kovacevic 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., Kovacevic, A., 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 . .
1
2
2
2

Selective Al-Ti reactivity in laser-processed Al/Ti multilayers

Peruško, Davor; Kovač, Janez; Petrović, Suzana; Obradović, Marko O.; Mitrić, Miodrag; Pavlović, Vladimir B.; Salatić, Branislav; Jaksa, G.; Ciganović, Jovan; Milosavljević, Momir

(2017)

TY  - JOUR
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Petrović, Suzana
AU  - Obradović, Marko O.
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
AU  - Salatić, Branislav
AU  - Jaksa, G.
AU  - Ciganović, Jovan
AU  - Milosavljević, Momir
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1725
AB  - Multilayers consisting of five (Al/Ti) bilayers were deposited on (100) silicon wafers. On top was deposited the Ti layer, aimed at preventing Al from diffusing to the surface upon laser treatment. The total thickness of the thin-film structure was 200 nm. Laser irradiations with Nd:YAG picoseconds laser pulses in the defocused regime were performed in air. Laser beam energy was 4 mJ and laser spot diameter on the sample surface was 3 mm (fluence 0.057 J cm(-2)). The samples were treated with different numbers of laser pulses. Structural characterizations were performed by different analytical methods and nano-hardness was also measured. Laser processing induced layer intermixing, formation of titanium aluminides, oxidation of the surface titanium layer and enhanced surface roughness. Aluminum appears at the sample surface only for the highest density of laser irradiation. Laser processing induces increment of nano-hardness by approximately 20% and decrease of residual Youngs modulus for a few percentages from the starting value of the untreated samples. These results can be interesting toward achieving structures with a selective extent of Al-Ti reactivity in this multilayered system, within the development of biocompatible materials.
T2  - Materials and Manufacturing Processes
T1  - Selective Al-Ti reactivity in laser-processed Al/Ti multilayers
VL  - 32
IS  - 14
SP  - 1622
EP  - 1627
DO  - 10.1080/10426914.2017.1279299
ER  - 
@article{
author = "Peruško, Davor and Kovač, Janez and Petrović, Suzana and Obradović, Marko O. and Mitrić, Miodrag and Pavlović, Vladimir B. and Salatić, Branislav and Jaksa, G. and Ciganović, Jovan and Milosavljević, Momir",
year = "2017",
abstract = "Multilayers consisting of five (Al/Ti) bilayers were deposited on (100) silicon wafers. On top was deposited the Ti layer, aimed at preventing Al from diffusing to the surface upon laser treatment. The total thickness of the thin-film structure was 200 nm. Laser irradiations with Nd:YAG picoseconds laser pulses in the defocused regime were performed in air. Laser beam energy was 4 mJ and laser spot diameter on the sample surface was 3 mm (fluence 0.057 J cm(-2)). The samples were treated with different numbers of laser pulses. Structural characterizations were performed by different analytical methods and nano-hardness was also measured. Laser processing induced layer intermixing, formation of titanium aluminides, oxidation of the surface titanium layer and enhanced surface roughness. Aluminum appears at the sample surface only for the highest density of laser irradiation. Laser processing induces increment of nano-hardness by approximately 20% and decrease of residual Youngs modulus for a few percentages from the starting value of the untreated samples. These results can be interesting toward achieving structures with a selective extent of Al-Ti reactivity in this multilayered system, within the development of biocompatible materials.",
journal = "Materials and Manufacturing Processes",
title = "Selective Al-Ti reactivity in laser-processed Al/Ti multilayers",
volume = "32",
number = "14",
pages = "1622-1627",
doi = "10.1080/10426914.2017.1279299"
}
Peruško, D., Kovač, J., Petrović, S., Obradović, M. O., Mitrić, M., Pavlović, V. B., Salatić, B., Jaksa, G., Ciganović, J.,& Milosavljević, M.. (2017). Selective Al-Ti reactivity in laser-processed Al/Ti multilayers. in Materials and Manufacturing Processes, 32(14), 1622-1627.
https://doi.org/10.1080/10426914.2017.1279299
Peruško D, Kovač J, Petrović S, Obradović MO, Mitrić M, Pavlović VB, Salatić B, Jaksa G, Ciganović J, Milosavljević M. Selective Al-Ti reactivity in laser-processed Al/Ti multilayers. in Materials and Manufacturing Processes. 2017;32(14):1622-1627.
doi:10.1080/10426914.2017.1279299 .
Peruško, Davor, Kovač, Janez, Petrović, Suzana, Obradović, Marko O., Mitrić, Miodrag, Pavlović, Vladimir B., Salatić, Branislav, Jaksa, G., Ciganović, Jovan, Milosavljević, Momir, "Selective Al-Ti reactivity in laser-processed Al/Ti multilayers" in Materials and Manufacturing Processes, 32, no. 14 (2017):1622-1627,
https://doi.org/10.1080/10426914.2017.1279299 . .
2
2
2

Inducing subwavelength periodic nanostructures on multilayer NiPd thin film by low-fluence femtosecond laser beam

Kovacevic, Aleksander G.; Petrović, Suzana; Lazović, Vladimir M.; Peruško, Davor; Pantelić, Dejan; Jelenković, Branislav

(2017)

TY  - JOUR
AU  - Kovacevic, Aleksander G.
AU  - Petrović, Suzana
AU  - Lazović, Vladimir M.
AU  - Peruško, Davor
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
PY  - 2017
UR  - http://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 = "Kovacevic, Aleksander G. 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"
}
Kovacevic, A. G., 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
Kovacevic AG, 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 .
Kovacevic, Aleksander G., 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 . .
3
3
3

Precise femtosecond laser crater fabrication in hard nanolayered AlTiN/TiN coating on steel substrate

Gaković, Biljana M.; Petrović, Suzana; Albu, C.; Zamfirescu, M.; Panjan, Peter; Milovanović, Dubravka S.; Popescu-Pelin, G.; Mihailescu, Ion N.

(2017)

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  - http://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 . .
2
3
3

Laser irradiation of 10x(Ni/Ti)/Si multilayers at different wavelengths

Salatić, Branislav; Petrović, Suzana; Peruško, Davor; Čekada, Miha; Jelenković, Branislav; Pantelić, Dejan

(2016)

TY  - JOUR
AU  - Salatić, Branislav
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Čekada, Miha
AU  - Jelenković, Branislav
AU  - Pantelić, Dejan
PY  - 2016
UR  - http://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),
https://doi.org/10.1007/s11082-016-0503-4 . .
1
1
1

Single- and dual-wavelength laser pulses induced modification in 10x(Al/Ti)/Si multilayer system

Salatić, Branislav; Petrović, Suzana; Peruško, Davor; Čekada, Miha; Panjan, Peter; Pantelić, Dejan; Jelenković, Branislav

(Elsevier, 2016)

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  - http://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 . .
2
2
3

Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam

Peruško, Davor; Kovač, Janez; Petrović, Suzana; Dražić, Goran; Mitrić, Miodrag; Milosavljević, Momir; Ciganović, Jovan

(2015)

TY  - JOUR
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Petrović, Suzana
AU  - Dražić, Goran
AU  - Mitrić, Miodrag
AU  - Milosavljević, Momir
AU  - Ciganović, Jovan
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7080
AB  - Multilayer structures, consisting of 15 alternate Ti and Al thin films, and covered with thicker Ti layer, were deposited on a Si substrate to a total thickness of 900 nm. Laser treatment was performed in air by defocused Nd:YAG laser pulses (150 ps) with energies of 7 and 10 mJ covering an area of 3 mm in diameter (fluences were 0.1 and 0.14 J cm(-2) respectively). Laser beam was scanned over the 5 x 5 mm surface area. Characterizations were done by Auger electron spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy and transmission electron microscopy. Nano-hardness measurements were performed by Vickers method with applied load of 5 mN. Obtained results show that irradiation with picosecond laser pulses leads to the formation of Ti2O3 in the top Ti layer. This process is more pronounced for higher energy and/or higher number of applied laser pulses. On the surface of all samples very thin amorphous TiO2 layer was formed. Laser irradiation induces surface melting and transformation of relatively flat surface into mosaic shaped one for samples treated with higher energy and higher number of applied laser pulses. Irradiation at smaller energy did not induce any noticeably mixing between Al and Ti beneath the covered Ti layer. Some mixing of Al and Ti appeared in the sample irradiated with higher energy of laser pulses. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Thin Solid Films
T1  - Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam
VL  - 591
SP  - 357
EP  - 362
DO  - 10.1016/j.tsf.2015.03.030
ER  - 
@article{
author = "Peruško, Davor and Kovač, Janez and Petrović, Suzana and Dražić, Goran and Mitrić, Miodrag and Milosavljević, Momir and Ciganović, Jovan",
year = "2015",
abstract = "Multilayer structures, consisting of 15 alternate Ti and Al thin films, and covered with thicker Ti layer, were deposited on a Si substrate to a total thickness of 900 nm. Laser treatment was performed in air by defocused Nd:YAG laser pulses (150 ps) with energies of 7 and 10 mJ covering an area of 3 mm in diameter (fluences were 0.1 and 0.14 J cm(-2) respectively). Laser beam was scanned over the 5 x 5 mm surface area. Characterizations were done by Auger electron spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy and transmission electron microscopy. Nano-hardness measurements were performed by Vickers method with applied load of 5 mN. Obtained results show that irradiation with picosecond laser pulses leads to the formation of Ti2O3 in the top Ti layer. This process is more pronounced for higher energy and/or higher number of applied laser pulses. On the surface of all samples very thin amorphous TiO2 layer was formed. Laser irradiation induces surface melting and transformation of relatively flat surface into mosaic shaped one for samples treated with higher energy and higher number of applied laser pulses. Irradiation at smaller energy did not induce any noticeably mixing between Al and Ti beneath the covered Ti layer. Some mixing of Al and Ti appeared in the sample irradiated with higher energy of laser pulses. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Thin Solid Films",
title = "Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam",
volume = "591",
pages = "357-362",
doi = "10.1016/j.tsf.2015.03.030"
}
Peruško, D., Kovač, J., Petrović, S., Dražić, G., Mitrić, M., Milosavljević, M.,& Ciganović, J.. (2015). Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam. in Thin Solid Films, 591, 357-362.
https://doi.org/10.1016/j.tsf.2015.03.030
Peruško D, Kovač J, Petrović S, Dražić G, Mitrić M, Milosavljević M, Ciganović J. Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam. in Thin Solid Films. 2015;591:357-362.
doi:10.1016/j.tsf.2015.03.030 .
Peruško, Davor, Kovač, Janez, Petrović, Suzana, Dražić, Goran, Mitrić, Miodrag, Milosavljević, Momir, Ciganović, Jovan, "Intermixing and phase transformations in Al/Ti multilayer system induced by picosecond laser beam" in Thin Solid Films, 591 (2015):357-362,
https://doi.org/10.1016/j.tsf.2015.03.030 . .
5
5
6

Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution

Petrović, Suzana; Milovanović, Dubravka S.; Salatić, Branislav; Peruško, Davor; Kovač, Janez; Dražić, Goran; Mitrić, Miodrag; Trtica, Milan; Jelenković, Branislav

(Elsevier, 2015)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Milovanović, Dubravka S.
AU  - Salatić, Branislav
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Dražić, Goran
AU  - Mitrić, Miodrag
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/807
AB  - Bimetallic NiAu and complex NiO:Au nanoparticles were formed by laser ablation of Ni target immersed in the colloidal gold solution. Effect of laser parameters (pulse duration, fluences and ablation times) on size and composition of nanoparticles was investigated by ablating the target with two Nd:YAG lasers at 1064 nm, operating with different pulse durations, 150 ps and 20 ns. Stronger ablation of the Ni target and subsequient synthesis of nanoparticles is achieved with picosecond pulses, compared to the nanoparticles production with nanosecond pulses, because the former ablation induces activation of different reactions between species in the colloidal solution. Shape, size and composition of the synthesized nanopraticles were found to correlate with the concentration of Ni species in the colloidal solution. Higher Ni concentration leads to formation of larger NiAu nanoparticles in form of solid solution. Smaller nanoparticles with lower Ni concentration in the colloidal solution were achieved by their synthesis during nanosecond pulses, when the obtained distribution of composition corresponds to the NiO matrix with incorporated golden nanoparticles. The results also demonstrate that the formation of bimetallic NiAu and complex NiO:Au nanoparticles were possible by means of laser ablation in liquids. (C) 2015 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution
VL  - 166
SP  - 223
EP  - 232
DO  - 10.1016/j.matchemphys.2015.10.007
ER  - 
@article{
author = "Petrović, Suzana and Milovanović, Dubravka S. and Salatić, Branislav and Peruško, Davor and Kovač, Janez and Dražić, Goran and Mitrić, Miodrag and Trtica, Milan and Jelenković, Branislav",
year = "2015",
abstract = "Bimetallic NiAu and complex NiO:Au nanoparticles were formed by laser ablation of Ni target immersed in the colloidal gold solution. Effect of laser parameters (pulse duration, fluences and ablation times) on size and composition of nanoparticles was investigated by ablating the target with two Nd:YAG lasers at 1064 nm, operating with different pulse durations, 150 ps and 20 ns. Stronger ablation of the Ni target and subsequient synthesis of nanoparticles is achieved with picosecond pulses, compared to the nanoparticles production with nanosecond pulses, because the former ablation induces activation of different reactions between species in the colloidal solution. Shape, size and composition of the synthesized nanopraticles were found to correlate with the concentration of Ni species in the colloidal solution. Higher Ni concentration leads to formation of larger NiAu nanoparticles in form of solid solution. Smaller nanoparticles with lower Ni concentration in the colloidal solution were achieved by their synthesis during nanosecond pulses, when the obtained distribution of composition corresponds to the NiO matrix with incorporated golden nanoparticles. The results also demonstrate that the formation of bimetallic NiAu and complex NiO:Au nanoparticles were possible by means of laser ablation in liquids. (C) 2015 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution",
volume = "166",
pages = "223-232",
doi = "10.1016/j.matchemphys.2015.10.007"
}
Petrović, S., Milovanović, D. S., Salatić, B., Peruško, D., Kovač, J., Dražić, G., Mitrić, M., Trtica, M.,& Jelenković, B.. (2015). Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution. in Materials Chemistry and Physics
Elsevier., 166, 223-232.
https://doi.org/10.1016/j.matchemphys.2015.10.007
Petrović S, Milovanović DS, Salatić B, Peruško D, Kovač J, Dražić G, Mitrić M, Trtica M, Jelenković B. Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution. in Materials Chemistry and Physics. 2015;166:223-232.
doi:10.1016/j.matchemphys.2015.10.007 .
Petrović, Suzana, Milovanović, Dubravka S., Salatić, Branislav, Peruško, Davor, Kovač, Janez, Dražić, Goran, Mitrić, Miodrag, Trtica, Milan, Jelenković, Branislav, "Composition and structure of NiAu nanoparticles formed by laser ablation of Ni target in Au colloidal solution" in Materials Chemistry and Physics, 166 (2015):223-232,
https://doi.org/10.1016/j.matchemphys.2015.10.007 . .
7
5
4

Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam

Kovacevic, Aleksander G.; Petrović, Suzana; Bokic, Bojana; Gaković, Biljana M.; Bokorov, Milos T.; Vasić, Borislav Z.; Gajic, Rados; Trtica, Milan; Jelenković, Branislav

(2015)

TY  - JOUR
AU  - Kovacevic, Aleksander G.
AU  - Petrović, Suzana
AU  - Bokic, Bojana
AU  - Gaković, Biljana M.
AU  - Bokorov, Milos T.
AU  - Vasić, Borislav Z.
AU  - Gajic, Rados
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/323
AB  - The effects of UV femtosecond laser beam with 76 MHz repetition rate on two types of thin films on Si substrate - the Al single layer thin film, and the multilayered thin film consisted of five Al/Ti bilayers (total thickness 130 nm) - were studied. The surface modification of the target was done by low fluences and different irradiation times, not exceeding similar to 300s. Nanopatterns in the form of femtosecond-laser induced periodic surface structures (fs-LIPSS) with periodicity of LT 315 nm and height of 45 nm were registered upon irradiation of the thin films. It was shown that: (i) the fs-LIPSS evolve from ruffles similar to high spatial frequency LIPSS (HSFL) into a low spatial frequency LIPSS (LSFL) if a certain threshold of the fluence is met, (ii) the number of LSFL increases with the exposition time and (iii) the LSFL remain stable even after long exposure times. We achieved high-quality highly-controllable fabrication of periodic structures on the surface of nanosized multilayer films with high-repetition-rate low-fluence femtosecond laser pulses. Compared to the Al single layer, the presence of the Ti underlayer in the Al/Ti multilayer thin film enabled more efficient heat transmittance through the Al/Ti interface away from the interaction zone which caused the reduction of the ablation effects leading to the formation of more regular LIPSS. The different outcomes of interactions with multi and single layer thin films lead to the conclusion that the behavior of the LIPSS is due to thin film structure. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam
VL  - 326
SP  - 91
EP  - 98
DO  - 10.1016/j.apsusc.2014.10.180
ER  - 
@article{
author = "Kovacevic, Aleksander G. and Petrović, Suzana and Bokic, Bojana and Gaković, Biljana M. and Bokorov, Milos T. and Vasić, Borislav Z. and Gajic, Rados and Trtica, Milan and Jelenković, Branislav",
year = "2015",
abstract = "The effects of UV femtosecond laser beam with 76 MHz repetition rate on two types of thin films on Si substrate - the Al single layer thin film, and the multilayered thin film consisted of five Al/Ti bilayers (total thickness 130 nm) - were studied. The surface modification of the target was done by low fluences and different irradiation times, not exceeding similar to 300s. Nanopatterns in the form of femtosecond-laser induced periodic surface structures (fs-LIPSS) with periodicity of LT 315 nm and height of 45 nm were registered upon irradiation of the thin films. It was shown that: (i) the fs-LIPSS evolve from ruffles similar to high spatial frequency LIPSS (HSFL) into a low spatial frequency LIPSS (LSFL) if a certain threshold of the fluence is met, (ii) the number of LSFL increases with the exposition time and (iii) the LSFL remain stable even after long exposure times. We achieved high-quality highly-controllable fabrication of periodic structures on the surface of nanosized multilayer films with high-repetition-rate low-fluence femtosecond laser pulses. Compared to the Al single layer, the presence of the Ti underlayer in the Al/Ti multilayer thin film enabled more efficient heat transmittance through the Al/Ti interface away from the interaction zone which caused the reduction of the ablation effects leading to the formation of more regular LIPSS. The different outcomes of interactions with multi and single layer thin films lead to the conclusion that the behavior of the LIPSS is due to thin film structure. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam",
volume = "326",
pages = "91-98",
doi = "10.1016/j.apsusc.2014.10.180"
}
Kovacevic, A. G., Petrović, S., Bokic, B., Gaković, B. M., Bokorov, M. T., Vasić, B. Z., Gajic, R., Trtica, M.,& Jelenković, B.. (2015). Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam. in Applied Surface Science, 326, 91-98.
https://doi.org/10.1016/j.apsusc.2014.10.180
Kovacevic AG, Petrović S, Bokic B, Gaković BM, Bokorov MT, Vasić BZ, Gajic R, Trtica M, Jelenković B. Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam. in Applied Surface Science. 2015;326:91-98.
doi:10.1016/j.apsusc.2014.10.180 .
Kovacevic, Aleksander G., Petrović, Suzana, Bokic, Bojana, Gaković, Biljana M., Bokorov, Milos T., Vasić, Borislav Z., Gajic, Rados, Trtica, Milan, Jelenković, Branislav, "Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam" in Applied Surface Science, 326 (2015):91-98,
https://doi.org/10.1016/j.apsusc.2014.10.180 . .
18
17
18

Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions

Petrović, Suzana; Salatić, Branislav; Milovanović, Dubravka S.; Lazović, Vladimir M.; Živković, Ljiljana; Trtica, Milan; Jelenković, Branislav

(2015)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Salatić, Branislav
AU  - Milovanović, Dubravka S.
AU  - Lazović, Vladimir M.
AU  - Živković, Ljiljana
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/392
AB  - Metallic copper Cu and bimetallic copper-silver CuAg nanoparticles (NPs) are generated by the ablation of copper bulk target in water and aqueous Ag colloidal solution, respectively. The experiments were performed using nanosecond Nd: YAG laser operating at 1064 nm. The generated NPs are characterized by UV-vis absorption spectroscopy, laser-induced breakdown spectroscopy, dynamic light scattering and scanning electron microscopy. The conducted investigations can be summarized as follows: (i) CuAg NPs colloidal solution possess the absorption in UV-vis spectral region, which can be attributed to the Cu-component; (ii) the primary bimetallic CuAg NPs have near uniform dimensions with diameter of about 15 nm, and as a rule, they are grouped into larger agglomerates without defined morphology; (iii) the obtained Cu NPs have mainly spherical form with average diameters up to 20 nm. Both types of NPs show a tendency towards the formation of large agglomerates with different morphology. Bimetallic NPs show the plasmon resonance in the vicinity of 640 nm with a good coincidence with formation of the colloidal solution of pure Cu NPs. The results also demonstrate that the core-shell structure (Ag-rich core/Cu-rich shell) is important for the formation of the bimetallic NPs, also agreeing very well with theory.
T2  - Journal of Optics
T1  - Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions
VL  - 17
IS  - 2
DO  - 10.1088/2040-8978/17/2/025402
ER  - 
@article{
author = "Petrović, Suzana and Salatić, Branislav and Milovanović, Dubravka S. and Lazović, Vladimir M. and Živković, Ljiljana and Trtica, Milan and Jelenković, Branislav",
year = "2015",
abstract = "Metallic copper Cu and bimetallic copper-silver CuAg nanoparticles (NPs) are generated by the ablation of copper bulk target in water and aqueous Ag colloidal solution, respectively. The experiments were performed using nanosecond Nd: YAG laser operating at 1064 nm. The generated NPs are characterized by UV-vis absorption spectroscopy, laser-induced breakdown spectroscopy, dynamic light scattering and scanning electron microscopy. The conducted investigations can be summarized as follows: (i) CuAg NPs colloidal solution possess the absorption in UV-vis spectral region, which can be attributed to the Cu-component; (ii) the primary bimetallic CuAg NPs have near uniform dimensions with diameter of about 15 nm, and as a rule, they are grouped into larger agglomerates without defined morphology; (iii) the obtained Cu NPs have mainly spherical form with average diameters up to 20 nm. Both types of NPs show a tendency towards the formation of large agglomerates with different morphology. Bimetallic NPs show the plasmon resonance in the vicinity of 640 nm with a good coincidence with formation of the colloidal solution of pure Cu NPs. The results also demonstrate that the core-shell structure (Ag-rich core/Cu-rich shell) is important for the formation of the bimetallic NPs, also agreeing very well with theory.",
journal = "Journal of Optics",
title = "Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions",
volume = "17",
number = "2",
doi = "10.1088/2040-8978/17/2/025402"
}
Petrović, S., Salatić, B., Milovanović, D. S., Lazović, V. M., Živković, L., Trtica, M.,& Jelenković, B.. (2015). Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions. in Journal of Optics, 17(2).
https://doi.org/10.1088/2040-8978/17/2/025402
Petrović S, Salatić B, Milovanović DS, Lazović VM, Živković L, Trtica M, Jelenković B. Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions. in Journal of Optics. 2015;17(2).
doi:10.1088/2040-8978/17/2/025402 .
Petrović, Suzana, Salatić, Branislav, Milovanović, Dubravka S., Lazović, Vladimir M., Živković, Ljiljana, Trtica, Milan, Jelenković, Branislav, "Agglomeration in core-shell structure of CuAg nanoparticles synthesized by the laser ablation of Cu target in aqueous solutions" in Journal of Optics, 17, no. 2 (2015),
https://doi.org/10.1088/2040-8978/17/2/025402 . .
1
8
8
8

Femtosecond laser surface patterning of steel and titanium alloy

Milovanović, Dubravka S.; Gaković, Biljana M.; Radu, C.; Zamfirescu, M.; Radak, Bojan; Petrović, Suzana; Rogić Miladinović, Zorana; Mihailescu, Ion N.

(2014)

TY  - JOUR
AU  - Milovanović, Dubravka S.
AU  - Gaković, Biljana M.
AU  - Radu, C.
AU  - Zamfirescu, M.
AU  - Radak, Bojan
AU  - Petrović, Suzana
AU  - Rogić Miladinović, Zorana
AU  - Mihailescu, Ion N.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7058
AB  - In this work, we present the results obtained by femtosecond laser processing of AISI D2 steel and the widely applicable titanium-based alloy, Ti6Al4V. Patterning the materials surfaces was done by a Ti: sapphire system at 775 nm wavelength and 200 fs pulse duration, while varying the output pulse energies and the scanning speed. The formation of laser-induced periodical surface structures were found for both materials.
T2  - Physica Scripta
T1  - Femtosecond laser surface patterning of steel and titanium alloy
VL  - T162
DO  - 10.1088/0031-8949/2014/T162/014017
ER  - 
@article{
author = "Milovanović, Dubravka S. and Gaković, Biljana M. and Radu, C. and Zamfirescu, M. and Radak, Bojan and Petrović, Suzana and Rogić Miladinović, Zorana and Mihailescu, Ion N.",
year = "2014",
abstract = "In this work, we present the results obtained by femtosecond laser processing of AISI D2 steel and the widely applicable titanium-based alloy, Ti6Al4V. Patterning the materials surfaces was done by a Ti: sapphire system at 775 nm wavelength and 200 fs pulse duration, while varying the output pulse energies and the scanning speed. The formation of laser-induced periodical surface structures were found for both materials.",
journal = "Physica Scripta",
title = "Femtosecond laser surface patterning of steel and titanium alloy",
volume = "T162",
doi = "10.1088/0031-8949/2014/T162/014017"
}
Milovanović, D. S., Gaković, B. M., Radu, C., Zamfirescu, M., Radak, B., Petrović, S., Rogić Miladinović, Z.,& Mihailescu, I. N.. (2014). Femtosecond laser surface patterning of steel and titanium alloy. in Physica Scripta, T162.
https://doi.org/10.1088/0031-8949/2014/T162/014017
Milovanović DS, Gaković BM, Radu C, Zamfirescu M, Radak B, Petrović S, Rogić Miladinović Z, Mihailescu IN. Femtosecond laser surface patterning of steel and titanium alloy. in Physica Scripta. 2014;T162.
doi:10.1088/0031-8949/2014/T162/014017 .
Milovanović, Dubravka S., Gaković, Biljana M., Radu, C., Zamfirescu, M., Radak, Bojan, Petrović, Suzana, Rogić Miladinović, Zorana, Mihailescu, Ion N., "Femtosecond laser surface patterning of steel and titanium alloy" in Physica Scripta, T162 (2014),
https://doi.org/10.1088/0031-8949/2014/T162/014017 . .
5
6
6

Multipulse nanosecond laser modification of steel surface

Chumakov, A. N.; Nikonchuk, I. S.; Gaković, Biljana M.; Petrović, Suzana; Trtica, Milan

(2014)

TY  - JOUR
AU  - Chumakov, A. N.
AU  - Nikonchuk, I. S.
AU  - Gaković, Biljana M.
AU  - Petrović, Suzana
AU  - Trtica, Milan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7057
AB  - Results of surface modification are presented for MnNiCrMo-steel samples exposed to a Nd:YAG laser operating in a pulse-periodic mode (10 Hz frequency, 532 nm wavelength and 17 ns pulse duration). The steel samples were irradiated in air by a series of laser pulses at a fluence of 10.7 J cm(-2) close to a plasma formation threshold. Surface structures were examined by optical, scanning electron and confocal optical microscopy. The appearance of the detected surface structures strongly depends on the number of laser pulses and power density of laser radiation. Significant differences were found between laser-induced structures in the center of the laser spot, at its edges and in the nearest surrounding of the laser spot. The reasons for such differences are discussed.
T2  - Physica Scripta
T1  - Multipulse nanosecond laser modification of steel surface
VL  - T162
DO  - 10.1088/0031-8949/2014/T162/014016
ER  - 
@article{
author = "Chumakov, A. N. and Nikonchuk, I. S. and Gaković, Biljana M. and Petrović, Suzana and Trtica, Milan",
year = "2014",
abstract = "Results of surface modification are presented for MnNiCrMo-steel samples exposed to a Nd:YAG laser operating in a pulse-periodic mode (10 Hz frequency, 532 nm wavelength and 17 ns pulse duration). The steel samples were irradiated in air by a series of laser pulses at a fluence of 10.7 J cm(-2) close to a plasma formation threshold. Surface structures were examined by optical, scanning electron and confocal optical microscopy. The appearance of the detected surface structures strongly depends on the number of laser pulses and power density of laser radiation. Significant differences were found between laser-induced structures in the center of the laser spot, at its edges and in the nearest surrounding of the laser spot. The reasons for such differences are discussed.",
journal = "Physica Scripta",
title = "Multipulse nanosecond laser modification of steel surface",
volume = "T162",
doi = "10.1088/0031-8949/2014/T162/014016"
}
Chumakov, A. N., Nikonchuk, I. S., Gaković, B. M., Petrović, S.,& Trtica, M.. (2014). Multipulse nanosecond laser modification of steel surface. in Physica Scripta, T162.
https://doi.org/10.1088/0031-8949/2014/T162/014016
Chumakov AN, Nikonchuk IS, Gaković BM, Petrović S, Trtica M. Multipulse nanosecond laser modification of steel surface. in Physica Scripta. 2014;T162.
doi:10.1088/0031-8949/2014/T162/014016 .
Chumakov, A. N., Nikonchuk, I. S., Gaković, Biljana M., Petrović, Suzana, Trtica, Milan, "Multipulse nanosecond laser modification of steel surface" in Physica Scripta, T162 (2014),
https://doi.org/10.1088/0031-8949/2014/T162/014016 . .
2
1

Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses

Petrović, Suzana; Peruško, Davor; Kovač, Janez; Siketic, Z.; Bogdanović-Radović, Ivančica; Gaković, Biljana M.; Radak, Bojan; Trtica, Milan

(2014)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Kovač, Janez
AU  - Siketic, Z.
AU  - Bogdanović-Radović, Ivančica
AU  - Gaković, Biljana M.
AU  - Radak, Bojan
AU  - Trtica, Milan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5842
AB  - The surface oxidation of Ni/Ti bilayer, deposited on silicon substrate, affected by picosecond Nd: YAG laser radiation has been investigated. Fluence close to the target ablation threshold and multi-pulse laser irradiation regime were applied. Changes in the chemical composition of the formed surface oxide layer were studied by Elastic Recoil Detection Analysis (ERDA) and X-ray photoelectron spectroscopy (XPS). Morphological features analysis, at the oxide surface layer, was monitored, too. Laser modification as-deposited (Ni/Ti)/Si sample with 10 pulses induces a progressed interaction between Ni and Ti layers with the initial surface oxidation and formation of NiTi alloy phase. Progressed intermixing of components was achieved for the irradiation with 50 and more pulses, when all components were quite uniformly distributed to a depth of about 80 nm. An oxide layer was formed at the surface, with the specific combination of the oxide phases depending on the number of accumulated pulses. Changes in the morphological characteristics are reflected in the increase of the mean surface roughness and the generation of a certain number of cavities. These features are decreased with increasing number of pulses, caused by the surface melting and a pronounced mobility of the materials. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses
VL  - 143
IS  - 2
SP  - 530
EP  - 535
DO  - 10.1016/j.matchemphys.2013.09.021
ER  - 
@article{
author = "Petrović, Suzana and Peruško, Davor and Kovač, Janez and Siketic, Z. and Bogdanović-Radović, Ivančica and Gaković, Biljana M. and Radak, Bojan and Trtica, Milan",
year = "2014",
abstract = "The surface oxidation of Ni/Ti bilayer, deposited on silicon substrate, affected by picosecond Nd: YAG laser radiation has been investigated. Fluence close to the target ablation threshold and multi-pulse laser irradiation regime were applied. Changes in the chemical composition of the formed surface oxide layer were studied by Elastic Recoil Detection Analysis (ERDA) and X-ray photoelectron spectroscopy (XPS). Morphological features analysis, at the oxide surface layer, was monitored, too. Laser modification as-deposited (Ni/Ti)/Si sample with 10 pulses induces a progressed interaction between Ni and Ti layers with the initial surface oxidation and formation of NiTi alloy phase. Progressed intermixing of components was achieved for the irradiation with 50 and more pulses, when all components were quite uniformly distributed to a depth of about 80 nm. An oxide layer was formed at the surface, with the specific combination of the oxide phases depending on the number of accumulated pulses. Changes in the morphological characteristics are reflected in the increase of the mean surface roughness and the generation of a certain number of cavities. These features are decreased with increasing number of pulses, caused by the surface melting and a pronounced mobility of the materials. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses",
volume = "143",
number = "2",
pages = "530-535",
doi = "10.1016/j.matchemphys.2013.09.021"
}
Petrović, S., Peruško, D., Kovač, J., Siketic, Z., Bogdanović-Radović, I., Gaković, B. M., Radak, B.,& Trtica, M.. (2014). Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses. in Materials Chemistry and Physics, 143(2), 530-535.
https://doi.org/10.1016/j.matchemphys.2013.09.021
Petrović S, Peruško D, Kovač J, Siketic Z, Bogdanović-Radović I, Gaković BM, Radak B, Trtica M. Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses. in Materials Chemistry and Physics. 2014;143(2):530-535.
doi:10.1016/j.matchemphys.2013.09.021 .
Petrović, Suzana, Peruško, Davor, Kovač, Janez, Siketic, Z., Bogdanović-Radović, Ivančica, Gaković, Biljana M., Radak, Bojan, Trtica, Milan, "Laser-induced surface oxidation of (Ni/Ti)/Si system with picosecond laser pulses" in Materials Chemistry and Physics, 143, no. 2 (2014):530-535,
https://doi.org/10.1016/j.matchemphys.2013.09.021 . .
6
5
6

Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film

Gaković, Biljana M.; Petrović, Suzana; Krmpot, Aleksandar J.; Pantelić, Dejan; Jelenković, Branislav; Stratakis, E.; Fotakis, C.

(2014)

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Petrović, Suzana
AU  - Krmpot, Aleksandar J.
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
AU  - Stratakis, E.
AU  - Fotakis, C.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/228
AB  - In this work we reported low and high repetition frequency femtosecond laser- induced modifications of tungsten-based thin film. The tungsten-titanium (WTi) thin film, thickness of 190 nm, was deposited by sputtering on single crystal Si (100) wafer. Irradiations were performed in air by linearly polarized and focused femtosecond laser beams with following parameters: (1) pulse duration 160 fs, wavelength 800 nm, laser repetition frequency (LRF) 75 MHz - high LRF, and (2) duration 40 fs, wavelength 800 nm, LRF of 1 kHz - low LRF. The results of femtosecond lasers processing of the WTi thin film revealed laser induced periodical surface structures (LIPSS) in the case of low LRF regime. LIPSSs were formed with different periodicity and different orientation to the laser polarization at the surface: micro-scale LIPSSs with orientation perpendicular to the laser polarization and nano-scale LIPSSs parallel and perpendicular to the laser polarization. After processing of the WTi/Si system in high LRF regime ablation and nanoparticles formation were registered.
T2  - Laser and Particle Beams
T1  - Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film
VL  - 32
IS  - 4
SP  - 613
EP  - 619
DO  - 10.1017/S0263034614000627
ER  - 
@article{
author = "Gaković, Biljana M. and Petrović, Suzana and Krmpot, Aleksandar J. and Pantelić, Dejan and Jelenković, Branislav and Stratakis, E. and Fotakis, C.",
year = "2014",
abstract = "In this work we reported low and high repetition frequency femtosecond laser- induced modifications of tungsten-based thin film. The tungsten-titanium (WTi) thin film, thickness of 190 nm, was deposited by sputtering on single crystal Si (100) wafer. Irradiations were performed in air by linearly polarized and focused femtosecond laser beams with following parameters: (1) pulse duration 160 fs, wavelength 800 nm, laser repetition frequency (LRF) 75 MHz - high LRF, and (2) duration 40 fs, wavelength 800 nm, LRF of 1 kHz - low LRF. The results of femtosecond lasers processing of the WTi thin film revealed laser induced periodical surface structures (LIPSS) in the case of low LRF regime. LIPSSs were formed with different periodicity and different orientation to the laser polarization at the surface: micro-scale LIPSSs with orientation perpendicular to the laser polarization and nano-scale LIPSSs parallel and perpendicular to the laser polarization. After processing of the WTi/Si system in high LRF regime ablation and nanoparticles formation were registered.",
journal = "Laser and Particle Beams",
title = "Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film",
volume = "32",
number = "4",
pages = "613-619",
doi = "10.1017/S0263034614000627"
}
Gaković, B. M., Petrović, S., Krmpot, A. J., Pantelić, D., Jelenković, B., Stratakis, E.,& Fotakis, C.. (2014). Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film. in Laser and Particle Beams, 32(4), 613-619.
https://doi.org/10.1017/S0263034614000627
Gaković BM, Petrović S, Krmpot AJ, Pantelić D, Jelenković B, Stratakis E, Fotakis C. Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film. in Laser and Particle Beams. 2014;32(4):613-619.
doi:10.1017/S0263034614000627 .
Gaković, Biljana M., Petrović, Suzana, Krmpot, Aleksandar J., Pantelić, Dejan, Jelenković, Branislav, Stratakis, E., Fotakis, C., "Low and high repetition frequency femtosecond lasers processing of tungsten-based thin film" in Laser and Particle Beams, 32, no. 4 (2014):613-619,
https://doi.org/10.1017/S0263034614000627 . .

Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure

Petrović, Suzana; Gaković, Biljana M.; Kovač, Janez; Panjan, Peter; Stratakis, E.; Trtica, Milan; Fotakis, C.; Jelenković, Branislav

(2014)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Kovač, Janez
AU  - Panjan, Peter
AU  - Stratakis, E.
AU  - Trtica, Milan
AU  - Fotakis, C.
AU  - Jelenković, Branislav
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/103
AB  - The conditions of ultra-thin oxide films synthesized as the Al/Fe multilayer structures after the surface treatment with femtosecond laser radiation were studied. Thin films composed of three (Al/Fe) bilayers were deposited by DC ion sputtering on (100) Si wafers to the total thickness of 410 nm. Laser irradiations were performed by 40-fs pulses of a Ti:Sapphire laser operating at 800 nm, at fluences slightly higher than the ablation threshold. The samples were characterized by Auger electron spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Progressed intermixing of components was achieved for the irradiation with fluence of 0.43 J cm(-2), when intermetallic phase was formed and all components were almost uniformly distributed through the entire multilayer structure. Exception is the subsurface region, to the thickness of 20 nm, where the distribution of constructive components and their oxide is changing with the distance from the surface, and this distribution depends on the applied laser fluences. An ultra-thin oxide layer was formed at the surface, with the specific combination of the oxide phases, Al2O3 and Fe2O3, depending on the applied fluences. Laser-induced modification was accompanied with the ablation of the material and the creation of parallel periodic structures. These effects of laser-induced morphological features are increased with increasing laser fluences, caused by the pronounced mobility of the materials. The special morphology of the laser-assisted synthesis of mixture of Al2O3 and Fe2O3 in the form of an ultra-thin oxide layer can improve their characteristics for functional applications, as catalysts and sensors.
T2  - Journal of Materials Science
T1  - Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure
VL  - 49
IS  - 22
SP  - 7900
EP  - 7907
DO  - 10.1007/s10853-014-8502-y
ER  - 
@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Kovač, Janez and Panjan, Peter and Stratakis, E. and Trtica, Milan and Fotakis, C. and Jelenković, Branislav",
year = "2014",
abstract = "The conditions of ultra-thin oxide films synthesized as the Al/Fe multilayer structures after the surface treatment with femtosecond laser radiation were studied. Thin films composed of three (Al/Fe) bilayers were deposited by DC ion sputtering on (100) Si wafers to the total thickness of 410 nm. Laser irradiations were performed by 40-fs pulses of a Ti:Sapphire laser operating at 800 nm, at fluences slightly higher than the ablation threshold. The samples were characterized by Auger electron spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Progressed intermixing of components was achieved for the irradiation with fluence of 0.43 J cm(-2), when intermetallic phase was formed and all components were almost uniformly distributed through the entire multilayer structure. Exception is the subsurface region, to the thickness of 20 nm, where the distribution of constructive components and their oxide is changing with the distance from the surface, and this distribution depends on the applied laser fluences. An ultra-thin oxide layer was formed at the surface, with the specific combination of the oxide phases, Al2O3 and Fe2O3, depending on the applied fluences. Laser-induced modification was accompanied with the ablation of the material and the creation of parallel periodic structures. These effects of laser-induced morphological features are increased with increasing laser fluences, caused by the pronounced mobility of the materials. The special morphology of the laser-assisted synthesis of mixture of Al2O3 and Fe2O3 in the form of an ultra-thin oxide layer can improve their characteristics for functional applications, as catalysts and sensors.",
journal = "Journal of Materials Science",
title = "Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure",
volume = "49",
number = "22",
pages = "7900-7907",
doi = "10.1007/s10853-014-8502-y"
}
Petrović, S., Gaković, B. M., Kovač, J., Panjan, P., Stratakis, E., Trtica, M., Fotakis, C.,& Jelenković, B.. (2014). Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure. in Journal of Materials Science, 49(22), 7900-7907.
https://doi.org/10.1007/s10853-014-8502-y
Petrović S, Gaković BM, Kovač J, Panjan P, Stratakis E, Trtica M, Fotakis C, Jelenković B. Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure. in Journal of Materials Science. 2014;49(22):7900-7907.
doi:10.1007/s10853-014-8502-y .
Petrović, Suzana, Gaković, Biljana M., Kovač, Janez, Panjan, Peter, Stratakis, E., Trtica, Milan, Fotakis, C., Jelenković, Branislav, "Synthesis of ultra-thin oxide layer in laser-treated 3x (Al/Fe)/Si multilayer structure" in Journal of Materials Science, 49, no. 22 (2014):7900-7907,
https://doi.org/10.1007/s10853-014-8502-y . .
1
2
2

Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses

Cizmovic, M.; Kovač, Janez; Milosavljević, Momir; Petrović, Suzana; Dražić, Goran; Mitrić, Miodrag; Obradović, Marko O.; Schaaf, P.; Peruško, Davor

(2013)

TY  - JOUR
AU  - Cizmovic, M.
AU  - Kovač, Janez
AU  - Milosavljević, Momir
AU  - Petrović, Suzana
AU  - Dražić, Goran
AU  - Mitrić, Miodrag
AU  - Obradović, Marko O.
AU  - Schaaf, P.
AU  - Peruško, Davor
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7016
AB  - Structural and compositional modifications of multilayered Al/Ti nano-structures induced by nanosecond laser pulses were investigated. Five and ten (Al/Ti) bilayers, with total thicknesses of 130 and 260 nm, respectively, were deposited by dc ion sputtering onto (100) Si wafers. The structures were irradiated in air with nanosecond Nd:YAG unfocused laser pulses. Characterizations of the samples were performed by x-ray diffraction analysis, Auger electron spectroscopy, atomic force microscopy and transmission electron microscopy. It was found that laser treatment of both structures induced complete intermixing of all deposited metallic films, their mixing with silicon substrate and formation of Al-Ti intermetallic and silicide compounds. This effect was achieved even for one applied laser pulse. Comparing these results with that for picosecond laser treatment of similar multilayered structures, it was concluded that materials involved within the heat diffusion length participated in the formation of new phases.
T2  - Physica Scripta
T1  - Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses
VL  - T157
DO  - 10.1088/0031-8949/2013/T157/014008
ER  - 
@article{
author = "Cizmovic, M. and Kovač, Janez and Milosavljević, Momir and Petrović, Suzana and Dražić, Goran and Mitrić, Miodrag and Obradović, Marko O. and Schaaf, P. and Peruško, Davor",
year = "2013",
abstract = "Structural and compositional modifications of multilayered Al/Ti nano-structures induced by nanosecond laser pulses were investigated. Five and ten (Al/Ti) bilayers, with total thicknesses of 130 and 260 nm, respectively, were deposited by dc ion sputtering onto (100) Si wafers. The structures were irradiated in air with nanosecond Nd:YAG unfocused laser pulses. Characterizations of the samples were performed by x-ray diffraction analysis, Auger electron spectroscopy, atomic force microscopy and transmission electron microscopy. It was found that laser treatment of both structures induced complete intermixing of all deposited metallic films, their mixing with silicon substrate and formation of Al-Ti intermetallic and silicide compounds. This effect was achieved even for one applied laser pulse. Comparing these results with that for picosecond laser treatment of similar multilayered structures, it was concluded that materials involved within the heat diffusion length participated in the formation of new phases.",
journal = "Physica Scripta",
title = "Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses",
volume = "T157",
doi = "10.1088/0031-8949/2013/T157/014008"
}
Cizmovic, M., Kovač, J., Milosavljević, M., Petrović, S., Dražić, G., Mitrić, M., Obradović, M. O., Schaaf, P.,& Peruško, D.. (2013). Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses. in Physica Scripta, T157.
https://doi.org/10.1088/0031-8949/2013/T157/014008
Cizmovic M, Kovač J, Milosavljević M, Petrović S, Dražić G, Mitrić M, Obradović MO, Schaaf P, Peruško D. Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses. in Physica Scripta. 2013;T157.
doi:10.1088/0031-8949/2013/T157/014008 .
Cizmovic, M., Kovač, Janez, Milosavljević, Momir, Petrović, Suzana, Dražić, Goran, Mitrić, Miodrag, Obradović, Marko O., Schaaf, P., Peruško, Davor, "Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses" in Physica Scripta, T157 (2013),
https://doi.org/10.1088/0031-8949/2013/T157/014008 . .
1
1
1

Laser irradiation of nano-metric Al/Ti multilayers

Peruško, Davor; Cizmovic, M.; Petrović, Suzana; Siketic, Z.; Mitrić, Miodrag; Pelicon, P.; Dražić, Goran; Kovač, Janez; Milinović, Velimir; Milosavljević, Momir

(2013)

TY  - JOUR
AU  - Peruško, Davor
AU  - Cizmovic, M.
AU  - Petrović, Suzana
AU  - Siketic, Z.
AU  - Mitrić, Miodrag
AU  - Pelicon, P.
AU  - Dražić, Goran
AU  - Kovač, Janez
AU  - Milinović, Velimir
AU  - Milosavljević, Momir
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5457
AB  - Multilayered 5x(Al/Ti) structures, deposited on a Si substrate to a total thickness of 130 nm, were treated by unfocused Nd:YAG laser pulses (150 ps) with energies of 85 and 65 mJ. Irradiations were performed in air with 10, 50 and 100 successive laser pulses. Characterizations were done by using Rutherford backscattering spectrometry (RBS), elastic recoil detection analysis (ERDA), x-ray diffraction (XRD) and transmission electron microscopy (TEM). The results obtained show that laser irradiation, at either energy, induced almost full intermixing of deposited layers and formation of intermetallic compounds, but this was more pronounced for the applied laser pulses with a higher energy. The intermixed layer-silicon interface remains intact for all numbers of applied laser pulses and for both energies. The formation of an oxide layer on the sample surfaces was also observed, the thickness of which is greater for the higher laser beam energy.
T2  - Laser Physics
T1  - Laser irradiation of nano-metric Al/Ti multilayers
VL  - 23
IS  - 3
DO  - 10.1088/1054-660X/23/3/036005
ER  - 
@article{
author = "Peruško, Davor and Cizmovic, M. and Petrović, Suzana and Siketic, Z. and Mitrić, Miodrag and Pelicon, P. and Dražić, Goran and Kovač, Janez and Milinović, Velimir and Milosavljević, Momir",
year = "2013",
abstract = "Multilayered 5x(Al/Ti) structures, deposited on a Si substrate to a total thickness of 130 nm, were treated by unfocused Nd:YAG laser pulses (150 ps) with energies of 85 and 65 mJ. Irradiations were performed in air with 10, 50 and 100 successive laser pulses. Characterizations were done by using Rutherford backscattering spectrometry (RBS), elastic recoil detection analysis (ERDA), x-ray diffraction (XRD) and transmission electron microscopy (TEM). The results obtained show that laser irradiation, at either energy, induced almost full intermixing of deposited layers and formation of intermetallic compounds, but this was more pronounced for the applied laser pulses with a higher energy. The intermixed layer-silicon interface remains intact for all numbers of applied laser pulses and for both energies. The formation of an oxide layer on the sample surfaces was also observed, the thickness of which is greater for the higher laser beam energy.",
journal = "Laser Physics",
title = "Laser irradiation of nano-metric Al/Ti multilayers",
volume = "23",
number = "3",
doi = "10.1088/1054-660X/23/3/036005"
}
Peruško, D., Cizmovic, M., Petrović, S., Siketic, Z., Mitrić, M., Pelicon, P., Dražić, G., Kovač, J., Milinović, V.,& Milosavljević, M.. (2013). Laser irradiation of nano-metric Al/Ti multilayers. in Laser Physics, 23(3).
https://doi.org/10.1088/1054-660X/23/3/036005
Peruško D, Cizmovic M, Petrović S, Siketic Z, Mitrić M, Pelicon P, Dražić G, Kovač J, Milinović V, Milosavljević M. Laser irradiation of nano-metric Al/Ti multilayers. in Laser Physics. 2013;23(3).
doi:10.1088/1054-660X/23/3/036005 .
Peruško, Davor, Cizmovic, M., Petrović, Suzana, Siketic, Z., Mitrić, Miodrag, Pelicon, P., Dražić, Goran, Kovač, Janez, Milinović, Velimir, Milosavljević, Momir, "Laser irradiation of nano-metric Al/Ti multilayers" in Laser Physics, 23, no. 3 (2013),
https://doi.org/10.1088/1054-660X/23/3/036005 . .
9
9
9

Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films

Petrović, Suzana; Gaković, Biljana M.; Peruško, Davor; Stratakis, E.; Bogdanović-Radović, Ivančica; Čekada, Miha; Fotakis, C.; Jelenković, Branislav

(2013)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Peruško, Davor
AU  - Stratakis, E.
AU  - Bogdanović-Radović, Ivančica
AU  - Čekada, Miha
AU  - Fotakis, C.
AU  - Jelenković, Branislav
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5819
AB  - Laser-induced periodic surface structures (LIPSSs) and chemical composition changes of Ti-based nanolayered thin films (Al/Ti, Ni/Ti) after femtosecond (fs) laser pulses action were studied. Irradiation is performed using linearly polarized Ti:Sapphire fs laser pulses of 40 fs pulse duration and 800 nm wavelength. The low spatial frequency LIPSS (LSFL), oriented perpendicular to the laser polarization with periods slightly lower than the irradiation wavelength, was typically formed at elevated laser fluences. On the contrary, high spatial frequency LIPSS (HSFL) with uniform period of 155 nm, parallel to the laser light polarization, appeared at low laser fluences, as well as in the wings of the Gaussian laser beam distribution for higher used fluence. LSFL formation was associated with the material ablation process and accompanied by the intense formation of nanoparticles, especially in the Ni/Ti system. The composition changes at the surface of both multilayer systems in the LSFL area indicated the intermixing between layers and the substrate. Concentration and distribution of all constitutive elements in the irradiated area with formed HSFLs were almost unchanged. (C) 2013 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films
VL  - 114
IS  - 23
DO  - 10.1063/1.4848016
ER  - 
@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Peruško, Davor and Stratakis, E. and Bogdanović-Radović, Ivančica and Čekada, Miha and Fotakis, C. and Jelenković, Branislav",
year = "2013",
abstract = "Laser-induced periodic surface structures (LIPSSs) and chemical composition changes of Ti-based nanolayered thin films (Al/Ti, Ni/Ti) after femtosecond (fs) laser pulses action were studied. Irradiation is performed using linearly polarized Ti:Sapphire fs laser pulses of 40 fs pulse duration and 800 nm wavelength. The low spatial frequency LIPSS (LSFL), oriented perpendicular to the laser polarization with periods slightly lower than the irradiation wavelength, was typically formed at elevated laser fluences. On the contrary, high spatial frequency LIPSS (HSFL) with uniform period of 155 nm, parallel to the laser light polarization, appeared at low laser fluences, as well as in the wings of the Gaussian laser beam distribution for higher used fluence. LSFL formation was associated with the material ablation process and accompanied by the intense formation of nanoparticles, especially in the Ni/Ti system. The composition changes at the surface of both multilayer systems in the LSFL area indicated the intermixing between layers and the substrate. Concentration and distribution of all constitutive elements in the irradiated area with formed HSFLs were almost unchanged. (C) 2013 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films",
volume = "114",
number = "23",
doi = "10.1063/1.4848016"
}
Petrović, S., Gaković, B. M., Peruško, D., Stratakis, E., Bogdanović-Radović, I., Čekada, M., Fotakis, C.,& Jelenković, B.. (2013). Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films. in Journal of Applied Physics, 114(23).
https://doi.org/10.1063/1.4848016
Petrović S, Gaković BM, Peruško D, Stratakis E, Bogdanović-Radović I, Čekada M, Fotakis C, Jelenković B. Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films. in Journal of Applied Physics. 2013;114(23).
doi:10.1063/1.4848016 .
Petrović, Suzana, Gaković, Biljana M., Peruško, Davor, Stratakis, E., Bogdanović-Radović, Ivančica, Čekada, Miha, Fotakis, C., Jelenković, Branislav, "Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films" in Journal of Applied Physics, 114, no. 23 (2013),
https://doi.org/10.1063/1.4848016 . .
26
24
24

Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions

Petrović, Suzana; Peruško, Davor; Salatić, Branislav; Bogdanović-Radović, Ivančica; Panjan, Peter; Gaković, Biljana M.; Pantelić, Dejan; Trtica, Milan; Jelenković, Branislav

(2013)

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Salatić, Branislav
AU  - Bogdanović-Radović, Ivančica
AU  - Panjan, Peter
AU  - Gaković, Biljana M.
AU  - Pantelić, Dejan
AU  - Trtica, Milan
AU  - Jelenković, Branislav
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5661
AB  - A study of morphological and composition changes of the (8(Al/Ti)/Si) system induced by laser pulses in different ambient conditions is presented. The effects of an Er, Yb, Cr-Glass laser, operating at 1540 nm wavelength with pulse duration of 44 ns, on a complex target were investigated. Irradiation of 8(Al/Ti)/Si was carried out at intensities of 5.9 and 9.5 x 10(11) W m(-2) in air, water and ethanol. The laser-induced morphological and composition modifications have shown dependence on applied intensities, number of laser pulses and ambient conditions. The following morphological changes were observed: (i) intense surface melting of the thin film and Si-substrate; (ii) ablation/exfoliation of the 8(Al/Ti) multilayer thin film from Si, (iii) appearance of hydrodynamic features such as resolidified material, and (iv) formation of crater at multi-pulse action. The formation of parallel periodic surface structure was only occurring in single pulse air-assisted modification. Analysis of the composition revealed that laser modification induced intermixing between the components of individual Al and Ti layers with potential formation of AlTi intermetallic compounds. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Optics and Laser Technology
T1  - Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions
VL  - 54
SP  - 22
EP  - 29
DO  - 10.1016/j.optlastec.2013.04.030
ER  - 
@article{
author = "Petrović, Suzana and Peruško, Davor and Salatić, Branislav and Bogdanović-Radović, Ivančica and Panjan, Peter and Gaković, Biljana M. and Pantelić, Dejan and Trtica, Milan and Jelenković, Branislav",
year = "2013",
abstract = "A study of morphological and composition changes of the (8(Al/Ti)/Si) system induced by laser pulses in different ambient conditions is presented. The effects of an Er, Yb, Cr-Glass laser, operating at 1540 nm wavelength with pulse duration of 44 ns, on a complex target were investigated. Irradiation of 8(Al/Ti)/Si was carried out at intensities of 5.9 and 9.5 x 10(11) W m(-2) in air, water and ethanol. The laser-induced morphological and composition modifications have shown dependence on applied intensities, number of laser pulses and ambient conditions. The following morphological changes were observed: (i) intense surface melting of the thin film and Si-substrate; (ii) ablation/exfoliation of the 8(Al/Ti) multilayer thin film from Si, (iii) appearance of hydrodynamic features such as resolidified material, and (iv) formation of crater at multi-pulse action. The formation of parallel periodic surface structure was only occurring in single pulse air-assisted modification. Analysis of the composition revealed that laser modification induced intermixing between the components of individual Al and Ti layers with potential formation of AlTi intermetallic compounds. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Optics and Laser Technology",
title = "Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions",
volume = "54",
pages = "22-29",
doi = "10.1016/j.optlastec.2013.04.030"
}
Petrović, S., Peruško, D., Salatić, B., Bogdanović-Radović, I., Panjan, P., Gaković, B. M., Pantelić, D., Trtica, M.,& Jelenković, B.. (2013). Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions. in Optics and Laser Technology, 54, 22-29.
https://doi.org/10.1016/j.optlastec.2013.04.030
Petrović S, Peruško D, Salatić B, Bogdanović-Radović I, Panjan P, Gaković BM, Pantelić D, Trtica M, Jelenković B. Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions. in Optics and Laser Technology. 2013;54:22-29.
doi:10.1016/j.optlastec.2013.04.030 .
Petrović, Suzana, Peruško, Davor, Salatić, Branislav, Bogdanović-Radović, Ivančica, Panjan, Peter, Gaković, Biljana M., Pantelić, Dejan, Trtica, Milan, Jelenković, Branislav, "Laser induced damage/ablation morphology on the 8(Al/Ti)/Si system in different ambient conditions" in Optics and Laser Technology, 54 (2013):22-29,
https://doi.org/10.1016/j.optlastec.2013.04.030 . .
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