TY  - JOUR
AU  - Perusko, Davor
AU  - Kovac, J.
AU  - Petrović, S.
AU  - Obradović, M.
AU  - Mitrić, M.
AU  - Pavlović, Vladimir
AU  - Salatić, B.
AU  - Jaksa, G.
AU  - Ciganović, J.
AU  - Milosavljević, M.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4497
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 Young's 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.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Materials and Manufacturing Processes
T1  - Selective Al-Ti reactivity in laser-processed Al/Ti multilayers
EP  - 1627
IS  - 14
SP  - 1622
VL  - 32
DO  - 10.1080/10426914.2017.1279299
ER  - 

@article{
author = "Perusko, Davor and Kovac, J. and Petrović, S. and Obradović, M. and Mitrić, M. and Pavlović, Vladimir and Salatić, B. and Jaksa, G. and Ciganović, J. and Milosavljević, M.",
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 Young's 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.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Materials and Manufacturing Processes",
title = "Selective Al-Ti reactivity in laser-processed Al/Ti multilayers",
pages = "1627-1622",
number = "14",
volume = "32",
doi = "10.1080/10426914.2017.1279299"
}

Perusko, D., Kovac, J., Petrović, S., Obradović, M., Mitrić, M., Pavlović, V., Salatić, B., Jaksa, G., Ciganović, J.,& Milosavljević, M.. (2017). Selective Al-Ti reactivity in laser-processed Al/Ti multilayers. in Materials and Manufacturing Processes
Taylor & Francis Inc, Philadelphia., 32(14), 1622-1627.
https://doi.org/10.1080/10426914.2017.1279299

Perusko D, Kovac J, Petrović S, Obradović M, Mitrić M, Pavlović V, 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 .

Perusko, Davor, Kovac, J., Petrović, S., Obradović, M., Mitrić, M., Pavlović, Vladimir, Salatić, B., Jaksa, G., Ciganović, J., Milosavljević, M., "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 . .

TY  - JOUR
AU  - Kleut, D.
AU  - Jovanović, S.
AU  - Marković, Z.
AU  - Kepić, Dejan P.
AU  - Tosić, D.
AU  - Romcević, N.
AU  - Marinović-Cincović, Milena
AU  - Dramicanin, Miroslav D.
AU  - Holclajtner-Antunović, Ivanka
AU  - Pavlović, Vladimir
AU  - Drazić, G.
AU  - Milosavljević, M.
AU  - Todorović-Marković, Biljana
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2980
AB  - A systematic study of the gamma irradiation effects on single wall carbon nanotube (SWCNT) structure was conducted. Nanotubes were exposed to different doses of gamma irradiation in three media. Irradiation was carried out in air, water and aqueous ammonia. Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA) and Raman spectroscopy confirmed the changes in the SWCNT structure. TGA measurements showed the highest percentage of introduced groups for the SWCNTs irradiated with 100 kGy. FTIR spectroscopy provided evidence for the attachment of hydroxyl, carboxyl and nitrile functional groups to the SWCNT sidewalls. Those groups were confirmed by EA. All irradiated SWCNTs had hydroxyl and carboxyl groups irrelevant to media used for irradiation, but nitrile functional groups were only identified in SWCNTs irradiated in aqueous ammonia. Raman spectroscopy indicated that the degree of disorder in the carbon nanotube structure correlates with the irradiation dose. For the nanotubes irradiated with the dose of 100 kGy, the Raman I-D/I-G ratio was three times higher than for the pristine ones. Atomic force microscopy showed a 50% decrease in nanotube length at a radiation dose of 100 kGy. Scanning and transmission electron microscopies showed significant changes in the morphology and structure of gamma irradiated SWCNTs.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose
EP  - 45
SP  - 37
VL  - 72
DO  - 10.1016/j.matchar.2012.07.002
ER  - 

@article{
author = "Kleut, D. and Jovanović, S. and Marković, Z. and Kepić, Dejan P. and Tosić, D. and Romcević, N. and Marinović-Cincović, Milena and Dramicanin, Miroslav D. and Holclajtner-Antunović, Ivanka and Pavlović, Vladimir and Drazić, G. and Milosavljević, M. and Todorović-Marković, Biljana",
year = "2012",
abstract = "A systematic study of the gamma irradiation effects on single wall carbon nanotube (SWCNT) structure was conducted. Nanotubes were exposed to different doses of gamma irradiation in three media. Irradiation was carried out in air, water and aqueous ammonia. Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA) and Raman spectroscopy confirmed the changes in the SWCNT structure. TGA measurements showed the highest percentage of introduced groups for the SWCNTs irradiated with 100 kGy. FTIR spectroscopy provided evidence for the attachment of hydroxyl, carboxyl and nitrile functional groups to the SWCNT sidewalls. Those groups were confirmed by EA. All irradiated SWCNTs had hydroxyl and carboxyl groups irrelevant to media used for irradiation, but nitrile functional groups were only identified in SWCNTs irradiated in aqueous ammonia. Raman spectroscopy indicated that the degree of disorder in the carbon nanotube structure correlates with the irradiation dose. For the nanotubes irradiated with the dose of 100 kGy, the Raman I-D/I-G ratio was three times higher than for the pristine ones. Atomic force microscopy showed a 50% decrease in nanotube length at a radiation dose of 100 kGy. Scanning and transmission electron microscopies showed significant changes in the morphology and structure of gamma irradiated SWCNTs.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose",
pages = "45-37",
volume = "72",
doi = "10.1016/j.matchar.2012.07.002"
}

Kleut, D., Jovanović, S., Marković, Z., Kepić, D. P., Tosić, D., Romcević, N., Marinović-Cincović, M., Dramicanin, M. D., Holclajtner-Antunović, I., Pavlović, V., Drazić, G., Milosavljević, M.,& Todorović-Marković, B.. (2012). Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose. in Materials Characterization
Elsevier Science Inc, New York., 72, 37-45.
https://doi.org/10.1016/j.matchar.2012.07.002

Kleut D, Jovanović S, Marković Z, Kepić DP, Tosić D, Romcević N, Marinović-Cincović M, Dramicanin MD, Holclajtner-Antunović I, Pavlović V, Drazić G, Milosavljević M, Todorović-Marković B. Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose. in Materials Characterization. 2012;72:37-45.
doi:10.1016/j.matchar.2012.07.002 .

Kleut, D., Jovanović, S., Marković, Z., Kepić, Dejan P., Tosić, D., Romcević, N., Marinović-Cincović, Milena, Dramicanin, Miroslav D., Holclajtner-Antunović, Ivanka, Pavlović, Vladimir, Drazić, G., Milosavljević, M., Todorović-Marković, Biljana, "Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose" in Materials Characterization, 72 (2012):37-45,
https://doi.org/10.1016/j.matchar.2012.07.002 . .