TY  - CONF
AU  - Salatić, Branislav
AU  - Petrović, Suzana
AU  - Bogdanović-Radović, Iva
AU  - Čekada, M.
AU  - Panjan, P.
AU  - Pantelić, D.
AU  - Jelenković, B.
AU  - Peruško, Davor
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10944
AB  - Metallic thin films, based on nickel (Ni) and palladium (Pd)are promising material for a wide range of application, as catalytic components [1], optical devices [2], photovoltaic gas sensors [3], dye sensitized solar cells [4], and especially for environmental purposes [5]. The potential of nanosecond laser micro-processing for surface modification of nickel-palladium (Ni/Pd) multilayer thin film deposited on n-type (100) silicon wafer was studied. The multilayer structure composed of five bilayer (Pd/Ni) was deposited by d.c.sputtering from a pure Ni and Pd targets, using Ar ions, to a total thickness of about 180 nm. These multilayer thin films were then exposed to various number of pulses of Er:Glass laser, operating at 1540 nm wavelength with pulse duration of 44 ns. Multi-pulse laser irradiations were done at an incidence angle of 90 in an ambient air environment. The changes of the composition and surface morphology in the 5x(Pd/Ni)/Si system were monitored by Particle Induced X-Ray Emission (PIXE), by Rutherford backscattering spectrometry (RBS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material without shallow or deep crater like characteristics. RBS analysis revealed that laser modification was induced intermixing between the individual Ni and Pd layers, but also with silicon substrate. During the laser processing of 5x(Pd/Ni)/Si system delivered energy was probably sufficient to cause solid-state reactions, the formation of intermetallic compounds and silicides with Ni and Pd. An interesting finding is the 5x(Pd/Ni)/Si thin film has undergone some changes in the chemical composition and structure in the irradiated areas, indicating better crystallinity with an increase of the number of applied pulses.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2017 : 6th International School and Conference on Photonics and COST actions: MP1406 and MP1402 : Program and the book of abstracts
T1  - Laser ablation of nickel/palladium multilayer thin films by nanosecond pulses
SP  - 173
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10944
ER  - 

@conference{
author = "Salatić, Branislav and Petrović, Suzana and Bogdanović-Radović, Iva and Čekada, M. and Panjan, P. and Pantelić, D. and Jelenković, B. and Peruško, Davor",
year = "2017",
abstract = "Metallic thin films, based on nickel (Ni) and palladium (Pd)are promising material for a wide range of application, as catalytic components [1], optical devices [2], photovoltaic gas sensors [3], dye sensitized solar cells [4], and especially for environmental purposes [5]. The potential of nanosecond laser micro-processing for surface modification of nickel-palladium (Ni/Pd) multilayer thin film deposited on n-type (100) silicon wafer was studied. The multilayer structure composed of five bilayer (Pd/Ni) was deposited by d.c.sputtering from a pure Ni and Pd targets, using Ar ions, to a total thickness of about 180 nm. These multilayer thin films were then exposed to various number of pulses of Er:Glass laser, operating at 1540 nm wavelength with pulse duration of 44 ns. Multi-pulse laser irradiations were done at an incidence angle of 90 in an ambient air environment. The changes of the composition and surface morphology in the 5x(Pd/Ni)/Si system were monitored by Particle Induced X-Ray Emission (PIXE), by Rutherford backscattering spectrometry (RBS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material without shallow or deep crater like characteristics. RBS analysis revealed that laser modification was induced intermixing between the individual Ni and Pd layers, but also with silicon substrate. During the laser processing of 5x(Pd/Ni)/Si system delivered energy was probably sufficient to cause solid-state reactions, the formation of intermetallic compounds and silicides with Ni and Pd. An interesting finding is the 5x(Pd/Ni)/Si thin film has undergone some changes in the chemical composition and structure in the irradiated areas, indicating better crystallinity with an increase of the number of applied pulses.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2017 : 6th International School and Conference on Photonics and COST actions: MP1406 and MP1402 : Program and the book of abstracts",
title = "Laser ablation of nickel/palladium multilayer thin films by nanosecond pulses",
pages = "173",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10944"
}

Salatić, B., Petrović, S., Bogdanović-Radović, I., Čekada, M., Panjan, P., Pantelić, D., Jelenković, B.,& Peruško, D.. (2017). Laser ablation of nickel/palladium multilayer thin films by nanosecond pulses. in PHOTONICA2017 : 6th International School and Conference on Photonics and COST actions: MP1406 and MP1402 : Program and the book of abstracts
Belgrade : Institute of Physics Belgrade., 173.
https://hdl.handle.net/21.15107/rcub_vinar_10944

Salatić B, Petrović S, Bogdanović-Radović I, Čekada M, Panjan P, Pantelić D, Jelenković B, Peruško D. Laser ablation of nickel/palladium multilayer thin films by nanosecond pulses. in PHOTONICA2017 : 6th International School and Conference on Photonics and COST actions: MP1406 and MP1402 : Program and the book of abstracts. 2017;:173.
https://hdl.handle.net/21.15107/rcub_vinar_10944 .

Salatić, Branislav, Petrović, Suzana, Bogdanović-Radović, Iva, Čekada, M., Panjan, P., Pantelić, D., Jelenković, B., Peruško, Davor, "Laser ablation of nickel/palladium multilayer thin films by nanosecond pulses" in PHOTONICA2017 : 6th International School and Conference on Photonics and COST actions: MP1406 and MP1402 : Program and the book of abstracts (2017):173,
https://hdl.handle.net/21.15107/rcub_vinar_10944 .

TY  - CONF
AU  - Gaković, Biljana M.
AU  - Radak, B.
AU  - Radu, C.
AU  - Zamfirescu, M.
AU  - Trtica, Milan
AU  - Petrović, S.
AU  - Stašić, Jelena
AU  - Panjan, P.
AU  - Mihailescu, I.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12455
AB  - For material processing one of the main advantages of using ultra short laser pulses, comparing to long pulses, is the highly localized modification. Ultra short pulse laser modification of materials is valuable for their application in nanotechnology, tribology, microelectronics, medical application, etc. In this paper, special attention is paid to experimental investigations of femtosecond laser surface modification of hard protective coating. The sample has been processed by a Ti:sapphire laser with pulse duration of 200 fs and wavelength of 775 nm. Single and multi pulse irradiation were performed in air. Various analytical techniques were used for characterization. The damage threshold for the examined coating, irradiated by 200 fs pulses, was determined.
PB  - Minsk : National Academy of Sciences of Belarus; B.I. Stepanov Institute of Physics
C3  - IX Belarusian-Serbian Symposium "Physics and Diagnostics of Laboratory and Astrophysical Plasmas" (РDР-9) : Proceedings
T1  - Laser ablation and structuring of hard coating with ultra-short laser pulses
SP  - 13
EP  - 16
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12455
ER  - 

@conference{
author = "Gaković, Biljana M. and Radak, B. and Radu, C. and Zamfirescu, M. and Trtica, Milan and Petrović, S. and Stašić, Jelena and Panjan, P. and Mihailescu, I.",
year = "2012",
abstract = "For material processing one of the main advantages of using ultra short laser pulses, comparing to long pulses, is the highly localized modification. Ultra short pulse laser modification of materials is valuable for their application in nanotechnology, tribology, microelectronics, medical application, etc. In this paper, special attention is paid to experimental investigations of femtosecond laser surface modification of hard protective coating. The sample has been processed by a Ti:sapphire laser with pulse duration of 200 fs and wavelength of 775 nm. Single and multi pulse irradiation were performed in air. Various analytical techniques were used for characterization. The damage threshold for the examined coating, irradiated by 200 fs pulses, was determined.",
publisher = "Minsk : National Academy of Sciences of Belarus; B.I. Stepanov Institute of Physics",
journal = "IX Belarusian-Serbian Symposium "Physics and Diagnostics of Laboratory and Astrophysical Plasmas" (РDР-9) : Proceedings",
title = "Laser ablation and structuring of hard coating with ultra-short laser pulses",
pages = "13-16",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12455"
}

Gaković, B. M., Radak, B., Radu, C., Zamfirescu, M., Trtica, M., Petrović, S., Stašić, J., Panjan, P.,& Mihailescu, I.. (2012). Laser ablation and structuring of hard coating with ultra-short laser pulses. in IX Belarusian-Serbian Symposium "Physics and Diagnostics of Laboratory and Astrophysical Plasmas" (РDР-9) : Proceedings
Minsk : National Academy of Sciences of Belarus; B.I. Stepanov Institute of Physics., 13-16.
https://hdl.handle.net/21.15107/rcub_vinar_12455

Gaković BM, Radak B, Radu C, Zamfirescu M, Trtica M, Petrović S, Stašić J, Panjan P, Mihailescu I. Laser ablation and structuring of hard coating with ultra-short laser pulses. in IX Belarusian-Serbian Symposium "Physics and Diagnostics of Laboratory and Astrophysical Plasmas" (РDР-9) : Proceedings. 2012;:13-16.
https://hdl.handle.net/21.15107/rcub_vinar_12455 .

Gaković, Biljana M., Radak, B., Radu, C., Zamfirescu, M., Trtica, Milan, Petrović, S., Stašić, Jelena, Panjan, P., Mihailescu, I., "Laser ablation and structuring of hard coating with ultra-short laser pulses" in IX Belarusian-Serbian Symposium "Physics and Diagnostics of Laboratory and Astrophysical Plasmas" (РDР-9) : Proceedings (2012):13-16,
https://hdl.handle.net/21.15107/rcub_vinar_12455 .

TY  - CONF
AU  - Gaković, Biljana
AU  - Ristić, Zoran
AU  - Cekada, M.
AU  - Panjan, P.
AU  - Trtica, Milan
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12899
AB  - Pulsed carbon-dioxide (TEA CO2) laser, among other, is suitable for ablation of hard ceramic coatings (HCC). HCC, deposited on steel substrate, can be used for tools and machine parts protection. The roughness and thickness of HCC are commonly measured by a profilometer. Data obtained with diamond tip usually give real 2D surface profile. A 3D topography of the surface can be obtained with this procedure, too. The results of profilometric analysis including 3D visualization, using a Taylor-Hobson Talysurf 2 profilometer, of laser ablated area (especially craters) are presented in this work. The following HCC were studied: TiN, CrN, CrON, as well as stainless steel wafer; all of them were surface ablated by pulsed TEA CO2 laser. The applied profilometer analysis describes effects of laser ablation well and it would be supplement to the results obtained by microscopic analysis.
C3  - SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers
T1  - Pulsed carbon-dioxide laser ablation: profilometric analysis
SP  - 316
EP  - 316
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12899
ER  - 

@conference{
author = "Gaković, Biljana and Ristić, Zoran and Cekada, M. and Panjan, P. and Trtica, Milan",
year = "2004",
abstract = "Pulsed carbon-dioxide (TEA CO2) laser, among other, is suitable for ablation of hard ceramic coatings (HCC). HCC, deposited on steel substrate, can be used for tools and machine parts protection. The roughness and thickness of HCC are commonly measured by a profilometer. Data obtained with diamond tip usually give real 2D surface profile. A 3D topography of the surface can be obtained with this procedure, too. The results of profilometric analysis including 3D visualization, using a Taylor-Hobson Talysurf 2 profilometer, of laser ablated area (especially craters) are presented in this work. The following HCC were studied: TiN, CrN, CrON, as well as stainless steel wafer; all of them were surface ablated by pulsed TEA CO2 laser. The applied profilometer analysis describes effects of laser ablation well and it would be supplement to the results obtained by microscopic analysis.",
journal = "SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers",
title = "Pulsed carbon-dioxide laser ablation: profilometric analysis",
pages = "316-316",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12899"
}

Gaković, B., Ristić, Z., Cekada, M., Panjan, P.,& Trtica, M.. (2004). Pulsed carbon-dioxide laser ablation: profilometric analysis. in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers, 316-316.
https://hdl.handle.net/21.15107/rcub_vinar_12899

Gaković B, Ristić Z, Cekada M, Panjan P, Trtica M. Pulsed carbon-dioxide laser ablation: profilometric analysis. in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers. 2004;:316-316.
https://hdl.handle.net/21.15107/rcub_vinar_12899 .

Gaković, Biljana, Ristić, Zoran, Cekada, M., Panjan, P., Trtica, Milan, "Pulsed carbon-dioxide laser ablation: profilometric analysis" in SFKM 2004 : XVI National Symposium on Condensed Matter Physics : Program and Contributed Papers (2004):316-316,
https://hdl.handle.net/21.15107/rcub_vinar_12899 .