TY  - JOUR
AU  - Stašić, Jelena
AU  - Gaković, Biljana M.
AU  - Trtica, Milan
AU  - Desai, T.
AU  - Volpe, L.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4910
AB  - A comparative study of superficial changes on the superalloy Inconel 600, induced by a picosecond Nd:YAG laser operating at 1064, 532, and 266 nm, is presented. All of the laser wavelengths, as well as the used fluences of 2.5 (1064 nm), 4.3 (532 nm), and 0.6 J/cm(2) (266 nm) were found to be adequate for inducing surface variations. Quite different surface features were produced depending on the laser wavelength used. The measured surface damage thresholds were 0.25, 0.13 and 0.10 J/cm(2) for 1064, 532, and 266 nm, respectively. Drastic differences, in function of the wavelength used, were recorded for the crater depths, as well the appearance of hydrodynamic effects and periodic surface structures. Differences in crater depths were explained via an easier propagation of the first harmonic laser radiation (1064 nm) through the ejected material and plasma compared to a radiation at 532 and 266 nm. Finally, changes in the surface oxygen content caused by ultrashort laser pulses were considered.
T2  - Laser and Particle Beams
T1  - Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064, 532, and 266 nm: Comparative study
VL  - 30
IS  - 2
SP  - 249
EP  - 257
DO  - 10.1017/S0263034611000899
ER  - 

@article{
author = "Stašić, Jelena and Gaković, Biljana M. and Trtica, Milan and Desai, T. and Volpe, L.",
year = "2012",
abstract = "A comparative study of superficial changes on the superalloy Inconel 600, induced by a picosecond Nd:YAG laser operating at 1064, 532, and 266 nm, is presented. All of the laser wavelengths, as well as the used fluences of 2.5 (1064 nm), 4.3 (532 nm), and 0.6 J/cm(2) (266 nm) were found to be adequate for inducing surface variations. Quite different surface features were produced depending on the laser wavelength used. The measured surface damage thresholds were 0.25, 0.13 and 0.10 J/cm(2) for 1064, 532, and 266 nm, respectively. Drastic differences, in function of the wavelength used, were recorded for the crater depths, as well the appearance of hydrodynamic effects and periodic surface structures. Differences in crater depths were explained via an easier propagation of the first harmonic laser radiation (1064 nm) through the ejected material and plasma compared to a radiation at 532 and 266 nm. Finally, changes in the surface oxygen content caused by ultrashort laser pulses were considered.",
journal = "Laser and Particle Beams",
title = "Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064, 532, and 266 nm: Comparative study",
volume = "30",
number = "2",
pages = "249-257",
doi = "10.1017/S0263034611000899"
}

Stašić, J., Gaković, B. M., Trtica, M., Desai, T.,& Volpe, L.. (2012). Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064, 532, and 266 nm: Comparative study. in Laser and Particle Beams, 30(2), 249-257.
https://doi.org/10.1017/S0263034611000899

Stašić J, Gaković BM, Trtica M, Desai T, Volpe L. Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064, 532, and 266 nm: Comparative study. in Laser and Particle Beams. 2012;30(2):249-257.
doi:10.1017/S0263034611000899 .

Stašić, Jelena, Gaković, Biljana M., Trtica, Milan, Desai, T., Volpe, L., "Superficial changes on the Inconel 600 superalloy by picosecond Nd:YAG laser operating at 1064, 532, and 266 nm: Comparative study" in Laser and Particle Beams, 30, no. 2 (2012):249-257,
https://doi.org/10.1017/S0263034611000899 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Peruško, Davor
AU  - Radak, Bojan
AU  - Desai, T.
AU  - Kovač, Janez
AU  - Panjan, Peter
AU  - Trtica, Milan
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3891
AB  - Picosecond (40 ps) pulsed Nd:YAG laser irradiation of a WTi thin film on silicon with a wavelength of 532 nm and a fluence 2.1 J/cm(2) was performed in air. This led to significant changes of the chemical composition and morphology on the surface of the WTi thin film. The results show an increase in surface roughness, due to formation of conical structures, about 50 nm wide in the base, and a very thin oxide layer composed of WO(3) and TiO(2), with a dominant TiO(2) phase at the top, within the depth of about 20 nm. The thickness of the oxide layer was dependent on the number of laser pulses. The samples were analyzed by scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy.
T2  - Applied Physics. A: Materials Science and Processing
T1  - Composition and structure modification of a WTi/Si system by short laser pulses
VL  - 98
IS  - 4
SP  - 843
EP  - 847
DO  - 10.1007/s00339-010-5549-8
ER  - 

@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Peruško, Davor and Radak, Bojan and Desai, T. and Kovač, Janez and Panjan, Peter and Trtica, Milan",
year = "2010",
abstract = "Picosecond (40 ps) pulsed Nd:YAG laser irradiation of a WTi thin film on silicon with a wavelength of 532 nm and a fluence 2.1 J/cm(2) was performed in air. This led to significant changes of the chemical composition and morphology on the surface of the WTi thin film. The results show an increase in surface roughness, due to formation of conical structures, about 50 nm wide in the base, and a very thin oxide layer composed of WO(3) and TiO(2), with a dominant TiO(2) phase at the top, within the depth of about 20 nm. The thickness of the oxide layer was dependent on the number of laser pulses. The samples were analyzed by scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy.",
journal = "Applied Physics. A: Materials Science and Processing",
title = "Composition and structure modification of a WTi/Si system by short laser pulses",
volume = "98",
number = "4",
pages = "843-847",
doi = "10.1007/s00339-010-5549-8"
}

Petrović, S., Gaković, B. M., Peruško, D., Radak, B., Desai, T., Kovač, J., Panjan, P.,& Trtica, M.. (2010). Composition and structure modification of a WTi/Si system by short laser pulses. in Applied Physics. A: Materials Science and Processing, 98(4), 843-847.
https://doi.org/10.1007/s00339-010-5549-8

Petrović S, Gaković BM, Peruško D, Radak B, Desai T, Kovač J, Panjan P, Trtica M. Composition and structure modification of a WTi/Si system by short laser pulses. in Applied Physics. A: Materials Science and Processing. 2010;98(4):843-847.
doi:10.1007/s00339-010-5549-8 .

Petrović, Suzana, Gaković, Biljana M., Peruško, Davor, Radak, Bojan, Desai, T., Kovač, Janez, Panjan, Peter, Trtica, Milan, "Composition and structure modification of a WTi/Si system by short laser pulses" in Applied Physics. A: Materials Science and Processing, 98, no. 4 (2010):843-847,
https://doi.org/10.1007/s00339-010-5549-8 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Radak, Bojan
AU  - Gaković, Biljana M.
AU  - Milovanović, Dubravka S.
AU  - Batani, Dimitri
AU  - Desai, T.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3639
AB  - Interaction of a Nd:YAG laser, operating at wavelengths of 1064 nm (23.6 J cm(-2) fluence) or 532 nm (25.9 J cm(-2) fluence), and pulse duration of 40 ps, with a titanium-based medical implant Ti6A14V alloy was studied. Surface at laser wavelengths 1064 nm and 532 rim, damage thresholds were estimated to be 0.9 J cm(-2) and 0.25 J cm(-2) respectively. At both laser wavelengths, the energy absorbed was mostly converted into thermal energy, forming craters, albeit about 50 times deeper at 1064 run than at 532 run. Periodic surface structures (PSS) were also formed with both laser wavelengths, concentric, and radial at micrometer scale (3 mu m to 15 mu m period), parallel at nanometer scale (800 nm period with the 1064 nm laser, 400 nm with The 532 nm laser). In the case of the 532 nm laser, the concentric Structures enlarge their period with accumulating laser pulse count. These features can help roughening of the implant surface and improve bio-compatibility.
T2  - Laser and Particle Beams
T1  - Surface modifications of Ti6A14V by a picosecond Nd:YAG laser
VL  - 27
IS  - 1
SP  - 85
EP  - 90
DO  - 10.1017/S0263034609000123
ER  - 

@article{
author = "Trtica, Milan and Radak, Bojan and Gaković, Biljana M. and Milovanović, Dubravka S. and Batani, Dimitri and Desai, T.",
year = "2009",
abstract = "Interaction of a Nd:YAG laser, operating at wavelengths of 1064 nm (23.6 J cm(-2) fluence) or 532 nm (25.9 J cm(-2) fluence), and pulse duration of 40 ps, with a titanium-based medical implant Ti6A14V alloy was studied. Surface at laser wavelengths 1064 nm and 532 rim, damage thresholds were estimated to be 0.9 J cm(-2) and 0.25 J cm(-2) respectively. At both laser wavelengths, the energy absorbed was mostly converted into thermal energy, forming craters, albeit about 50 times deeper at 1064 run than at 532 run. Periodic surface structures (PSS) were also formed with both laser wavelengths, concentric, and radial at micrometer scale (3 mu m to 15 mu m period), parallel at nanometer scale (800 nm period with the 1064 nm laser, 400 nm with The 532 nm laser). In the case of the 532 nm laser, the concentric Structures enlarge their period with accumulating laser pulse count. These features can help roughening of the implant surface and improve bio-compatibility.",
journal = "Laser and Particle Beams",
title = "Surface modifications of Ti6A14V by a picosecond Nd:YAG laser",
volume = "27",
number = "1",
pages = "85-90",
doi = "10.1017/S0263034609000123"
}

Trtica, M., Radak, B., Gaković, B. M., Milovanović, D. S., Batani, D.,& Desai, T.. (2009). Surface modifications of Ti6A14V by a picosecond Nd:YAG laser. in Laser and Particle Beams, 27(1), 85-90.
https://doi.org/10.1017/S0263034609000123

Trtica M, Radak B, Gaković BM, Milovanović DS, Batani D, Desai T. Surface modifications of Ti6A14V by a picosecond Nd:YAG laser. in Laser and Particle Beams. 2009;27(1):85-90.
doi:10.1017/S0263034609000123 .

Trtica, Milan, Radak, Bojan, Gaković, Biljana M., Milovanović, Dubravka S., Batani, Dimitri, Desai, T., "Surface modifications of Ti6A14V by a picosecond Nd:YAG laser" in Laser and Particle Beams, 27, no. 1 (2009):85-90,
https://doi.org/10.1017/S0263034609000123 . .

TY  - JOUR
AU  - Stašić, Jelena
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Petrović, Suzana
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Panjan, Peter
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3621
AB  - Interaction of Nd:YAG laser, operating at 1064 or 532 nm wavelength and a pulse duration of 40 ps, with AISI 1045 steel was studied. Surface damage thresholds were estimated to be 0.30 and 0.16 J/cm(2) at the wavelengths of 1064 and 532 nm, respectively. The steel surface modi. cation was studied at the laser energy density of 10.3 J/cm(2) (at 1064 nm) and 5.4 J/cm(2) (at 532 nm). The energy absorbed from Nd: YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following AISI 1045 steel surface morphological changes and processes were observed: (i) both laser wavelengths cause damage of the steel in the central zone of irradiated area; (ii) appearance of a hydrodynamic feature in the form of resolidified droplets of the material in the surrounding outer zone with 1064 nm laser wavelength; (iii) appearance of periodic surface structures, at micro- and nano-level, with the 532 nm wavelength and, (iv) development of plasma in front of the target. Generally, interaction of laser beam with the AISI 1045 steel (at 1064 and 532 nm) results in a near-instantaneous creation of damage, meaning that large steel surfaces can be processed in short time. (C) 2008 Elsevier B. V. All rights reserved.
T2  - Applied Surface Science
T1  - Surface modifications of AISI 1045 steel created by high intensity 1064 and 532 nm picosecond Nd:YAG laser pulses
VL  - 255
IS  - 8
SP  - 4474
EP  - 4478
DO  - 10.1016/j.apsusc.2008.11.049
ER  - 

@article{
author = "Stašić, Jelena and Trtica, Milan and Gaković, Biljana M. and Petrović, Suzana and Batani, Dimitri and Desai, T. and Panjan, Peter",
year = "2009",
abstract = "Interaction of Nd:YAG laser, operating at 1064 or 532 nm wavelength and a pulse duration of 40 ps, with AISI 1045 steel was studied. Surface damage thresholds were estimated to be 0.30 and 0.16 J/cm(2) at the wavelengths of 1064 and 532 nm, respectively. The steel surface modi. cation was studied at the laser energy density of 10.3 J/cm(2) (at 1064 nm) and 5.4 J/cm(2) (at 532 nm). The energy absorbed from Nd: YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following AISI 1045 steel surface morphological changes and processes were observed: (i) both laser wavelengths cause damage of the steel in the central zone of irradiated area; (ii) appearance of a hydrodynamic feature in the form of resolidified droplets of the material in the surrounding outer zone with 1064 nm laser wavelength; (iii) appearance of periodic surface structures, at micro- and nano-level, with the 532 nm wavelength and, (iv) development of plasma in front of the target. Generally, interaction of laser beam with the AISI 1045 steel (at 1064 and 532 nm) results in a near-instantaneous creation of damage, meaning that large steel surfaces can be processed in short time. (C) 2008 Elsevier B. V. All rights reserved.",
journal = "Applied Surface Science",
title = "Surface modifications of AISI 1045 steel created by high intensity 1064 and 532 nm picosecond Nd:YAG laser pulses",
volume = "255",
number = "8",
pages = "4474-4478",
doi = "10.1016/j.apsusc.2008.11.049"
}

Stašić, J., Trtica, M., Gaković, B. M., Petrović, S., Batani, D., Desai, T.,& Panjan, P.. (2009). Surface modifications of AISI 1045 steel created by high intensity 1064 and 532 nm picosecond Nd:YAG laser pulses. in Applied Surface Science, 255(8), 4474-4478.
https://doi.org/10.1016/j.apsusc.2008.11.049

Stašić J, Trtica M, Gaković BM, Petrović S, Batani D, Desai T, Panjan P. Surface modifications of AISI 1045 steel created by high intensity 1064 and 532 nm picosecond Nd:YAG laser pulses. in Applied Surface Science. 2009;255(8):4474-4478.
doi:10.1016/j.apsusc.2008.11.049 .

Stašić, Jelena, Trtica, Milan, Gaković, Biljana M., Petrović, Suzana, Batani, Dimitri, Desai, T., Panjan, Peter, "Surface modifications of AISI 1045 steel created by high intensity 1064 and 532 nm picosecond Nd:YAG laser pulses" in Applied Surface Science, 255, no. 8 (2009):4474-4478,
https://doi.org/10.1016/j.apsusc.2008.11.049 . .

TY  - JOUR
AU  - Stašić, Jelena
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Branković, Goran O.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3738
AB  - Interaction of Nd:YAG laser, operating at 266 nm wavelength and a pulse duration of 40 ps, with AISI 1045 steel was studied. Surface damage threshold was estimated to be 0.14 J/cm(2). The steel surface modi. cation was studied at the laser fluence of similar to 1.0 J/cm(2). The energy absorbed from Nd: YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following AISI 1045 steel surface morphological changes and processes were observed: (i) intensive damage of the target in the central zone of irradiated area; (ii) appearance of periodic surface structures at nano-level, with periodicity in agreement with the used wavelength; (iii) reduction of oxygen concentration in irradiated area; and (iv) development of plasma in front of the target. Generally, interaction of laser beam with AISI 1045 steel (at 266 nm) results in a near-instantaneous creation of damage, meaning that large steel surfaces can be modified in short times. (C) 2009 Elsevier B. V. All rights reserved.
T2  - Applied Surface Science
T1  - Modifications of AISI 1045 steel by picosecond Nd:YAG laser at 266 nm; comparison with 532 and 1064 nm pulses
VL  - 255
IS  - 19
SP  - 8221
EP  - 8225
DO  - 10.1016/j.apsusc.2009.05.049
ER  - 

@article{
author = "Stašić, Jelena and Trtica, Milan and Gaković, Biljana M. and Batani, Dimitri and Desai, T. and Branković, Goran O.",
year = "2009",
abstract = "Interaction of Nd:YAG laser, operating at 266 nm wavelength and a pulse duration of 40 ps, with AISI 1045 steel was studied. Surface damage threshold was estimated to be 0.14 J/cm(2). The steel surface modi. cation was studied at the laser fluence of similar to 1.0 J/cm(2). The energy absorbed from Nd: YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following AISI 1045 steel surface morphological changes and processes were observed: (i) intensive damage of the target in the central zone of irradiated area; (ii) appearance of periodic surface structures at nano-level, with periodicity in agreement with the used wavelength; (iii) reduction of oxygen concentration in irradiated area; and (iv) development of plasma in front of the target. Generally, interaction of laser beam with AISI 1045 steel (at 266 nm) results in a near-instantaneous creation of damage, meaning that large steel surfaces can be modified in short times. (C) 2009 Elsevier B. V. All rights reserved.",
journal = "Applied Surface Science",
title = "Modifications of AISI 1045 steel by picosecond Nd:YAG laser at 266 nm; comparison with 532 and 1064 nm pulses",
volume = "255",
number = "19",
pages = "8221-8225",
doi = "10.1016/j.apsusc.2009.05.049"
}

Stašić, J., Trtica, M., Gaković, B. M., Batani, D., Desai, T.,& Branković, G. O.. (2009). Modifications of AISI 1045 steel by picosecond Nd:YAG laser at 266 nm; comparison with 532 and 1064 nm pulses. in Applied Surface Science, 255(19), 8221-8225.
https://doi.org/10.1016/j.apsusc.2009.05.049

Stašić J, Trtica M, Gaković BM, Batani D, Desai T, Branković GO. Modifications of AISI 1045 steel by picosecond Nd:YAG laser at 266 nm; comparison with 532 and 1064 nm pulses. in Applied Surface Science. 2009;255(19):8221-8225.
doi:10.1016/j.apsusc.2009.05.049 .

Stašić, Jelena, Trtica, Milan, Gaković, Biljana M., Batani, Dimitri, Desai, T., Branković, Goran O., "Modifications of AISI 1045 steel by picosecond Nd:YAG laser at 266 nm; comparison with 532 and 1064 nm pulses" in Applied Surface Science, 255, no. 19 (2009):8221-8225,
https://doi.org/10.1016/j.apsusc.2009.05.049 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Peruško, Davor
AU  - Desai, T.
AU  - Batani, Dimitri
AU  - Čekada, Miha
AU  - Radak, Bojan
AU  - Trtica, Milan
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3773
AB  - Interaction of an Nd:YAG laser, operating at 532 nm wavelength and pulse duration of 40 ps, with tungsten-titanium (WTi) thin film (thickness, 190 nm) deposited on single silicon (100) substrate was studied. Laser fluences of 10.5 and 13.4 J/cm(2) were found to be sufficient for modification of the WTi/silicon target system. The energy absorbed from the Nd:YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following WTi/silicon surface morphological changes were observed: (i) ablation of the thin film during the first laser pulse. The boundary of damage area was relatively sharp after action of one pulse whereas it was quite diffuse after irradiation with more than 10 pulses; (ii) appearance of some nano-structures (e.g., nano-ripples) in the irradiated region; (iii) appearance of the micro-cracking. The process of the laser interaction with WTi/silicon target was accompanied by formation of plasma.
T2  - Laser Physics
T1  - Picosecond laser ablation of nano-sized WTi thin film
VL  - 19
IS  - 8
SP  - 1844
EP  - 1849
DO  - 10.1134/S1054660X09150353
ER  - 

@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Peruško, Davor and Desai, T. and Batani, Dimitri and Čekada, Miha and Radak, Bojan and Trtica, Milan",
year = "2009",
abstract = "Interaction of an Nd:YAG laser, operating at 532 nm wavelength and pulse duration of 40 ps, with tungsten-titanium (WTi) thin film (thickness, 190 nm) deposited on single silicon (100) substrate was studied. Laser fluences of 10.5 and 13.4 J/cm(2) were found to be sufficient for modification of the WTi/silicon target system. The energy absorbed from the Nd:YAG laser beam is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following WTi/silicon surface morphological changes were observed: (i) ablation of the thin film during the first laser pulse. The boundary of damage area was relatively sharp after action of one pulse whereas it was quite diffuse after irradiation with more than 10 pulses; (ii) appearance of some nano-structures (e.g., nano-ripples) in the irradiated region; (iii) appearance of the micro-cracking. The process of the laser interaction with WTi/silicon target was accompanied by formation of plasma.",
journal = "Laser Physics",
title = "Picosecond laser ablation of nano-sized WTi thin film",
volume = "19",
number = "8",
pages = "1844-1849",
doi = "10.1134/S1054660X09150353"
}

Petrović, S., Gaković, B. M., Peruško, D., Desai, T., Batani, D., Čekada, M., Radak, B.,& Trtica, M.. (2009). Picosecond laser ablation of nano-sized WTi thin film. in Laser Physics, 19(8), 1844-1849.
https://doi.org/10.1134/S1054660X09150353

Petrović S, Gaković BM, Peruško D, Desai T, Batani D, Čekada M, Radak B, Trtica M. Picosecond laser ablation of nano-sized WTi thin film. in Laser Physics. 2009;19(8):1844-1849.
doi:10.1134/S1054660X09150353 .

Petrović, Suzana, Gaković, Biljana M., Peruško, Davor, Desai, T., Batani, Dimitri, Čekada, Miha, Radak, Bojan, Trtica, Milan, "Picosecond laser ablation of nano-sized WTi thin film" in Laser Physics, 19, no. 8 (2009):1844-1849,
https://doi.org/10.1134/S1054660X09150353 . .

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Trtica, Milan
AU  - Radak, Bojan
AU  - Petrović, Suzana
AU  - Panjan, Peter
AU  - Čekada, Miha
AU  - Desai, T.
AU  - Batani, Dimitri
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3615
AB  - A multilayered TiAlN/TiN coating deposited on H11 work-steel was irradiated by a TEA CO(2) laser (ns pulses) and a Nd:YAG laser (ps pulses), and the effects compared. The coating was 2.17 mu m thick and consisted of 45 layers. The laser-induced modifications showed dependence on laser pulse duration, pulse count and laser wavelength. The conditions for coating ablation in both cases were determined. The experiment has revealed laser-induced periodic surface structures (LPSS) on nanometre and micrometre scales, depending on the laser wavelength used. Sample surfaces were characterized before and after laser irradiation by an optical microscope, scanning electron microscope (SEM), focused ion beam (FIB) microscope and profilometry.
T2  - Journal of Optics. A: Pure and Applied Optics
T1  - Modification of multilayered TiAlN/TiN coating by nanosecond and picosecond laser pulses
VL  - 11
IS  - 1
DO  - 10.1088/1464-4258/11/1/015601
ER  - 

@article{
author = "Gaković, Biljana M. and Trtica, Milan and Radak, Bojan and Petrović, Suzana and Panjan, Peter and Čekada, Miha and Desai, T. and Batani, Dimitri",
year = "2009",
abstract = "A multilayered TiAlN/TiN coating deposited on H11 work-steel was irradiated by a TEA CO(2) laser (ns pulses) and a Nd:YAG laser (ps pulses), and the effects compared. The coating was 2.17 mu m thick and consisted of 45 layers. The laser-induced modifications showed dependence on laser pulse duration, pulse count and laser wavelength. The conditions for coating ablation in both cases were determined. The experiment has revealed laser-induced periodic surface structures (LPSS) on nanometre and micrometre scales, depending on the laser wavelength used. Sample surfaces were characterized before and after laser irradiation by an optical microscope, scanning electron microscope (SEM), focused ion beam (FIB) microscope and profilometry.",
journal = "Journal of Optics. A: Pure and Applied Optics",
title = "Modification of multilayered TiAlN/TiN coating by nanosecond and picosecond laser pulses",
volume = "11",
number = "1",
doi = "10.1088/1464-4258/11/1/015601"
}

Gaković, B. M., Trtica, M., Radak, B., Petrović, S., Panjan, P., Čekada, M., Desai, T.,& Batani, D.. (2009). Modification of multilayered TiAlN/TiN coating by nanosecond and picosecond laser pulses. in Journal of Optics. A: Pure and Applied Optics, 11(1).
https://doi.org/10.1088/1464-4258/11/1/015601

Gaković BM, Trtica M, Radak B, Petrović S, Panjan P, Čekada M, Desai T, Batani D. Modification of multilayered TiAlN/TiN coating by nanosecond and picosecond laser pulses. in Journal of Optics. A: Pure and Applied Optics. 2009;11(1).
doi:10.1088/1464-4258/11/1/015601 .

Gaković, Biljana M., Trtica, Milan, Radak, Bojan, Petrović, Suzana, Panjan, Peter, Čekada, Miha, Desai, T., Batani, Dimitri, "Modification of multilayered TiAlN/TiN coating by nanosecond and picosecond laser pulses" in Journal of Optics. A: Pure and Applied Optics, 11, no. 1 (2009),
https://doi.org/10.1088/1464-4258/11/1/015601 . .

TY  - JOUR
AU  - Bussoli, M.
AU  - Desai, T.
AU  - Batani, Dimitri
AU  - Gaković, Biljana M.
AU  - Trtica, Milan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6776
AB  - Interaction of Nd:YAG laser, operating at 1064 or 532 nm wavelengths and pulse duration of 40 picoseconds, with titanium implant has been studied. Surface damage threshold were estimated to be 0.9 and 0.6 J/cm(2) at wavelengths of 1064 and 532 nm, respectively. The titanium implant surface modification was studied at the laser fluence similar to 4.0 and 23.8 J/cm(2) (at 1064 nm) and 13.6 J/cm(2) (at 532 nm). The following titanium implant surface morphological changes were observed: (1) both laser wavelengths cause damage of the titanium in the central zone of the irradiated area (2) appearance of a hydrodynamic feature in the form of re-solidified droplets of the material in the surrounding outer zone with the 1064 nm laser wavelength, and (3) appearance of wave-like microstructures with the 532 nm wavelength. Generally, both laser wavelengths and the corresponding laser energy flux can efficiently enhance the titanium roughness to improve bio-integration with the biological tissues.
T2  - Radiation Effects and Defects in Solids
T1  - Nd : YAG laser interaction with titanium implant surfaces for medical applications
VL  - 163
IS  - 4-6
SP  - 349
EP  - 356
DO  - 10.1080/10420150701777678
ER  - 

@article{
author = "Bussoli, M. and Desai, T. and Batani, Dimitri and Gaković, Biljana M. and Trtica, Milan",
year = "2008",
abstract = "Interaction of Nd:YAG laser, operating at 1064 or 532 nm wavelengths and pulse duration of 40 picoseconds, with titanium implant has been studied. Surface damage threshold were estimated to be 0.9 and 0.6 J/cm(2) at wavelengths of 1064 and 532 nm, respectively. The titanium implant surface modification was studied at the laser fluence similar to 4.0 and 23.8 J/cm(2) (at 1064 nm) and 13.6 J/cm(2) (at 532 nm). The following titanium implant surface morphological changes were observed: (1) both laser wavelengths cause damage of the titanium in the central zone of the irradiated area (2) appearance of a hydrodynamic feature in the form of re-solidified droplets of the material in the surrounding outer zone with the 1064 nm laser wavelength, and (3) appearance of wave-like microstructures with the 532 nm wavelength. Generally, both laser wavelengths and the corresponding laser energy flux can efficiently enhance the titanium roughness to improve bio-integration with the biological tissues.",
journal = "Radiation Effects and Defects in Solids",
title = "Nd : YAG laser interaction with titanium implant surfaces for medical applications",
volume = "163",
number = "4-6",
pages = "349-356",
doi = "10.1080/10420150701777678"
}

Bussoli, M., Desai, T., Batani, D., Gaković, B. M.,& Trtica, M.. (2008). Nd : YAG laser interaction with titanium implant surfaces for medical applications. in Radiation Effects and Defects in Solids, 163(4-6), 349-356.
https://doi.org/10.1080/10420150701777678

Bussoli M, Desai T, Batani D, Gaković BM, Trtica M. Nd : YAG laser interaction with titanium implant surfaces for medical applications. in Radiation Effects and Defects in Solids. 2008;163(4-6):349-356.
doi:10.1080/10420150701777678 .

Bussoli, M., Desai, T., Batani, Dimitri, Gaković, Biljana M., Trtica, Milan, "Nd : YAG laser interaction with titanium implant surfaces for medical applications" in Radiation Effects and Defects in Solids, 163, no. 4-6 (2008):349-356,
https://doi.org/10.1080/10420150701777678 . .

TY  - CONF
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Radak, Bojan
AU  - Maravić, Dubravka S.
AU  - Batani, Dimitri
AU  - Desai, T.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6829
AB  - Interaction of an Nd:YAG laser, operating at 1064 or 532 run, 40 ps pulse, with Ti6Al4V implant/alloy was studied. The energy absorbed from the laser is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following changes were observed: (i) appearance of crater like form in the central zone of the irradiated area; (ii) resolidified droplets of the material in the surrounding outer zone, especially expressed at 1064 nm; and (iii) appearance of a periodic surface structures, also more prominent at 1064 nm. Generally, both laser wavelengths show potential of enhancing the roughness of the surface, particularly useful in implant applications, for better bio-integration. Laser interaction with the samples was accompanied by formation of plasma, which additionally helps obtaining a sterilizing effect.
T1  - Surface Modifications of a Ti6al4v Implant/Alloy By a Picosecond Nd:Yag Laser
IS  - 84
SP  - 227
EP  - +
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6829
ER  - 

@conference{
author = "Trtica, Milan and Gaković, Biljana M. and Radak, Bojan and Maravić, Dubravka S. and Batani, Dimitri and Desai, T.",
year = "2008",
abstract = "Interaction of an Nd:YAG laser, operating at 1064 or 532 run, 40 ps pulse, with Ti6Al4V implant/alloy was studied. The energy absorbed from the laser is partially converted to thermal energy, which generates a series of effects, such as melting, vaporization of the molten material, shock waves, etc. The following changes were observed: (i) appearance of crater like form in the central zone of the irradiated area; (ii) resolidified droplets of the material in the surrounding outer zone, especially expressed at 1064 nm; and (iii) appearance of a periodic surface structures, also more prominent at 1064 nm. Generally, both laser wavelengths show potential of enhancing the roughness of the surface, particularly useful in implant applications, for better bio-integration. Laser interaction with the samples was accompanied by formation of plasma, which additionally helps obtaining a sterilizing effect.",
title = "Surface Modifications of a Ti6al4v Implant/Alloy By a Picosecond Nd:Yag Laser",
number = "84",
pages = "227-+",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6829"
}

Trtica, M., Gaković, B. M., Radak, B., Maravić, D. S., Batani, D.,& Desai, T.. (2008). Surface Modifications of a Ti6al4v Implant/Alloy By a Picosecond Nd:Yag Laser. (84), 227-+.
https://hdl.handle.net/21.15107/rcub_vinar_6829

Trtica M, Gaković BM, Radak B, Maravić DS, Batani D, Desai T. Surface Modifications of a Ti6al4v Implant/Alloy By a Picosecond Nd:Yag Laser. 2008;(84):227-+.
https://hdl.handle.net/21.15107/rcub_vinar_6829 .

Trtica, Milan, Gaković, Biljana M., Radak, Bojan, Maravić, Dubravka S., Batani, Dimitri, Desai, T., "Surface Modifications of a Ti6al4v Implant/Alloy By a Picosecond Nd:Yag Laser", no. 84 (2008):227-+,
https://hdl.handle.net/21.15107/rcub_vinar_6829 .

TY  - JOUR
AU  - Gaković, Biljana M.
AU  - Trtica, Milan
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Panjan, Peter
AU  - Vasiljević-Radović, Dana
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6581
AB  - The interaction of a picosecond Nd: YAG laser ( wavelength 532 nm, pulse duration 40 ps) with a polycrystalline titanium nitride ( TiN) film was studied. The TiN thin film was deposited by physical vapour deposition on a silicon substrate. The titanium nitride/ silicon system was modified with an energy fluence from 0.2 to 5.9 J cm(-2). Multi- pulse irradiation was performed in air by a focused laser beam. Surface modifications were analysed after 1 - 100 successive laser pulses. Depending on the laser pulse energy and pulse count, the following phenomena were observed: ( i) increased surface roughness, ( ii) titanium nitride film cracking, ( iii) silicon substrate modification, ( iv) film exfoliation and ( v) laser- induced periodical surface structures on nano- ( NPSS) and micro- dimensions ( MPSS).
T2  - Journal of Optics. A: Pure and Applied Optics
T1  - Surface modification of titanium nitride film by a picosecond Nd : YAG laser
VL  - 9
IS  - 6
SP  - S76
EP  - S80
DO  - 10.1088/1464-4258/9/6/S11
ER  - 

@article{
author = "Gaković, Biljana M. and Trtica, Milan and Batani, Dimitri and Desai, T. and Panjan, Peter and Vasiljević-Radović, Dana",
year = "2007",
abstract = "The interaction of a picosecond Nd: YAG laser ( wavelength 532 nm, pulse duration 40 ps) with a polycrystalline titanium nitride ( TiN) film was studied. The TiN thin film was deposited by physical vapour deposition on a silicon substrate. The titanium nitride/ silicon system was modified with an energy fluence from 0.2 to 5.9 J cm(-2). Multi- pulse irradiation was performed in air by a focused laser beam. Surface modifications were analysed after 1 - 100 successive laser pulses. Depending on the laser pulse energy and pulse count, the following phenomena were observed: ( i) increased surface roughness, ( ii) titanium nitride film cracking, ( iii) silicon substrate modification, ( iv) film exfoliation and ( v) laser- induced periodical surface structures on nano- ( NPSS) and micro- dimensions ( MPSS).",
journal = "Journal of Optics. A: Pure and Applied Optics",
title = "Surface modification of titanium nitride film by a picosecond Nd : YAG laser",
volume = "9",
number = "6",
pages = "S76-S80",
doi = "10.1088/1464-4258/9/6/S11"
}

Gaković, B. M., Trtica, M., Batani, D., Desai, T., Panjan, P.,& Vasiljević-Radović, D.. (2007). Surface modification of titanium nitride film by a picosecond Nd : YAG laser. in Journal of Optics. A: Pure and Applied Optics, 9(6), S76-S80.
https://doi.org/10.1088/1464-4258/9/6/S11

Gaković BM, Trtica M, Batani D, Desai T, Panjan P, Vasiljević-Radović D. Surface modification of titanium nitride film by a picosecond Nd : YAG laser. in Journal of Optics. A: Pure and Applied Optics. 2007;9(6):S76-S80.
doi:10.1088/1464-4258/9/6/S11 .

Gaković, Biljana M., Trtica, Milan, Batani, Dimitri, Desai, T., Panjan, Peter, Vasiljević-Radović, Dana, "Surface modification of titanium nitride film by a picosecond Nd : YAG laser" in Journal of Optics. A: Pure and Applied Optics, 9, no. 6 (2007):S76-S80,
https://doi.org/10.1088/1464-4258/9/6/S11 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Radak, Bojan
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Bussoli, M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3336
AB  - Creation of laser-induced morphology features, particularly laser-induced periodic surface structures (LIPSS), by a 532 nm picosecond Nd:YAG laser on crystalline silicon is reported. The LIPSS, often termed ripples,. were produced at average laser irradiation fluences of 0.7, 1.6, and 7.9 J cm(-2). Two types of ripples were registered: micro-ripples (at micrometer scale) in the form of straight parallel lines extending over the entire irradiated spot, and nano-ripples (at nanometer scale), apparently concentric, registered only at the rim of the spot, with the periodicity dependent on laser fluence. There are indications that the parallel ripples are a consequence of the partial periodicity contained in the diffraction modulated laser beam, and the nano-ripples are very likely frozen capillary waves. The damage threshold fluence, was estimated at 0.6 J cm(-2). (c) 2007 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Periodic surface structures on crystalline silicon created by 532 nm picosecond Nd : YAG laser pulses
VL  - 254
IS  - 5
SP  - 1377
EP  - 1381
DO  - 10.1016/j.apsusc.2007.06.050
ER  - 

@article{
author = "Trtica, Milan and Gaković, Biljana M. and Radak, Bojan and Batani, Dimitri and Desai, T. and Bussoli, M.",
year = "2007",
abstract = "Creation of laser-induced morphology features, particularly laser-induced periodic surface structures (LIPSS), by a 532 nm picosecond Nd:YAG laser on crystalline silicon is reported. The LIPSS, often termed ripples,. were produced at average laser irradiation fluences of 0.7, 1.6, and 7.9 J cm(-2). Two types of ripples were registered: micro-ripples (at micrometer scale) in the form of straight parallel lines extending over the entire irradiated spot, and nano-ripples (at nanometer scale), apparently concentric, registered only at the rim of the spot, with the periodicity dependent on laser fluence. There are indications that the parallel ripples are a consequence of the partial periodicity contained in the diffraction modulated laser beam, and the nano-ripples are very likely frozen capillary waves. The damage threshold fluence, was estimated at 0.6 J cm(-2). (c) 2007 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Periodic surface structures on crystalline silicon created by 532 nm picosecond Nd : YAG laser pulses",
volume = "254",
number = "5",
pages = "1377-1381",
doi = "10.1016/j.apsusc.2007.06.050"
}

Trtica, M., Gaković, B. M., Radak, B., Batani, D., Desai, T.,& Bussoli, M.. (2007). Periodic surface structures on crystalline silicon created by 532 nm picosecond Nd : YAG laser pulses. in Applied Surface Science, 254(5), 1377-1381.
https://doi.org/10.1016/j.apsusc.2007.06.050

Trtica M, Gaković BM, Radak B, Batani D, Desai T, Bussoli M. Periodic surface structures on crystalline silicon created by 532 nm picosecond Nd : YAG laser pulses. in Applied Surface Science. 2007;254(5):1377-1381.
doi:10.1016/j.apsusc.2007.06.050 .

Trtica, Milan, Gaković, Biljana M., Radak, Bojan, Batani, Dimitri, Desai, T., Bussoli, M., "Periodic surface structures on crystalline silicon created by 532 nm picosecond Nd : YAG laser pulses" in Applied Surface Science, 254, no. 5 (2007):1377-1381,
https://doi.org/10.1016/j.apsusc.2007.06.050 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Maravić, Dubravka S.
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Redaelli, R.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3305
AB  - A study of silicon modification induced by a high intensity picosecond Nd:YAG laser, emitting at 1064 nm, is presented. It is shown that laser intensities in the range of 5 x 10(10)-0.7 x 10(12) W cm(-2) drastically modified the silicon surface. The main modifications and effects can be considered as the appearance of a crater, hydrodynamic/deposition features, plasma, etc. The highest intensity of similar to 0.7 x 10(12) W cm(-2) leads to the burning through a 500 mu m thick sample. At these intensities, the surface morphology exhibits the transpiring of the explosive boiling/phase explosion (EB) in the interaction area. The picosecond Nd:YAG laser-silicon interaction was typically accompanied by massive ejection of target material in the surrounding environment. The threshold for the explosive boiling/phase explosion (TEB) was estimated to be in the interval 1.0 x 10(10) W cm(-2) LT TEB LT = 3.8 x 10(10) W cm(-2). (C) 2007 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Surface modifications of crystalline silicon created by high intensity 1064 nm picosecond Nd : YAG laser pulses
VL  - 253
IS  - 24
SP  - 9315
EP  - 9318
DO  - 10.1016/j.apsusc.2007.05.080
ER  - 

@article{
author = "Trtica, Milan and Gaković, Biljana M. and Maravić, Dubravka S. and Batani, Dimitri and Desai, T. and Redaelli, R.",
year = "2007",
abstract = "A study of silicon modification induced by a high intensity picosecond Nd:YAG laser, emitting at 1064 nm, is presented. It is shown that laser intensities in the range of 5 x 10(10)-0.7 x 10(12) W cm(-2) drastically modified the silicon surface. The main modifications and effects can be considered as the appearance of a crater, hydrodynamic/deposition features, plasma, etc. The highest intensity of similar to 0.7 x 10(12) W cm(-2) leads to the burning through a 500 mu m thick sample. At these intensities, the surface morphology exhibits the transpiring of the explosive boiling/phase explosion (EB) in the interaction area. The picosecond Nd:YAG laser-silicon interaction was typically accompanied by massive ejection of target material in the surrounding environment. The threshold for the explosive boiling/phase explosion (TEB) was estimated to be in the interval 1.0 x 10(10) W cm(-2) LT TEB LT = 3.8 x 10(10) W cm(-2). (C) 2007 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Surface modifications of crystalline silicon created by high intensity 1064 nm picosecond Nd : YAG laser pulses",
volume = "253",
number = "24",
pages = "9315-9318",
doi = "10.1016/j.apsusc.2007.05.080"
}

Trtica, M., Gaković, B. M., Maravić, D. S., Batani, D., Desai, T.,& Redaelli, R.. (2007). Surface modifications of crystalline silicon created by high intensity 1064 nm picosecond Nd : YAG laser pulses. in Applied Surface Science, 253(24), 9315-9318.
https://doi.org/10.1016/j.apsusc.2007.05.080

Trtica M, Gaković BM, Maravić DS, Batani D, Desai T, Redaelli R. Surface modifications of crystalline silicon created by high intensity 1064 nm picosecond Nd : YAG laser pulses. in Applied Surface Science. 2007;253(24):9315-9318.
doi:10.1016/j.apsusc.2007.05.080 .

Trtica, Milan, Gaković, Biljana M., Maravić, Dubravka S., Batani, Dimitri, Desai, T., Redaelli, R., "Surface modifications of crystalline silicon created by high intensity 1064 nm picosecond Nd : YAG laser pulses" in Applied Surface Science, 253, no. 24 (2007):9315-9318,
https://doi.org/10.1016/j.apsusc.2007.05.080 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Gaković, Biljana M.
AU  - Maravić, Dubravka S.
AU  - Batani, Dimitri
AU  - Desai, T.
AU  - Redaelli, R.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6602
AB  - The effects of an Nd:YAG laser interaction with titanium target using laser radiation at wavelengths 1.064 or 0.532 mu m (40 picoseconds pulse duration) were studied. Modification of target surfaces at laser energy densities of 2.4 and 10.3 J/cm(2) (lambda(laser)(1) = 1.064 mu m) and 1.1 J/cm(2) (lambda(laser)(2) = 0.532 mu m) are reported in this article. Qualitatively, the titanium surface modification can be summarized as follows: (i) ablation of the titanium surface in the central zone of the irradiated area for both laser wavelengths; (ii) appearance of a hydrodynamic feature like resolidified droplets of the material (lambda(laser)(1) 1.064 mu m), as well as formation of the wave-like microstructures (lambda(laser)(2) = 0.532 mu m); and (iii) appearance of plasma, in front of the target, with both laser wavelengths.
T2  - Materials Science Forum
T1  - Surface modification of titanium by high intensity ultra-short Nd : YAG laser
VL  - 518
SP  - 167
EP  - 172
DO  - 10.4028/www.scientific.net/MSF.518.167
ER  - 

@article{
author = "Trtica, Milan and Gaković, Biljana M. and Maravić, Dubravka S. and Batani, Dimitri and Desai, T. and Redaelli, R.",
year = "2006",
abstract = "The effects of an Nd:YAG laser interaction with titanium target using laser radiation at wavelengths 1.064 or 0.532 mu m (40 picoseconds pulse duration) were studied. Modification of target surfaces at laser energy densities of 2.4 and 10.3 J/cm(2) (lambda(laser)(1) = 1.064 mu m) and 1.1 J/cm(2) (lambda(laser)(2) = 0.532 mu m) are reported in this article. Qualitatively, the titanium surface modification can be summarized as follows: (i) ablation of the titanium surface in the central zone of the irradiated area for both laser wavelengths; (ii) appearance of a hydrodynamic feature like resolidified droplets of the material (lambda(laser)(1) 1.064 mu m), as well as formation of the wave-like microstructures (lambda(laser)(2) = 0.532 mu m); and (iii) appearance of plasma, in front of the target, with both laser wavelengths.",
journal = "Materials Science Forum",
title = "Surface modification of titanium by high intensity ultra-short Nd : YAG laser",
volume = "518",
pages = "167-172",
doi = "10.4028/www.scientific.net/MSF.518.167"
}

Trtica, M., Gaković, B. M., Maravić, D. S., Batani, D., Desai, T.,& Redaelli, R.. (2006). Surface modification of titanium by high intensity ultra-short Nd : YAG laser. in Materials Science Forum, 518, 167-172.
https://doi.org/10.4028/www.scientific.net/MSF.518.167

Trtica M, Gaković BM, Maravić DS, Batani D, Desai T, Redaelli R. Surface modification of titanium by high intensity ultra-short Nd : YAG laser. in Materials Science Forum. 2006;518:167-172.
doi:10.4028/www.scientific.net/MSF.518.167 .

Trtica, Milan, Gaković, Biljana M., Maravić, Dubravka S., Batani, Dimitri, Desai, T., Redaelli, R., "Surface modification of titanium by high intensity ultra-short Nd : YAG laser" in Materials Science Forum, 518 (2006):167-172,
https://doi.org/10.4028/www.scientific.net/MSF.518.167 . .