TY  - JOUR
AU  - Ciganović, Jovan
AU  - Stašić, Jelena
AU  - Gaković, Biljana M.
AU  - Momčilović, Miloš
AU  - Milovanović, Dubravka S.
AU  - Bokorov, M.
AU  - Trtica, Milan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4651
AB  - Interaction of a TEA CO2 laser, operating at 10.6 mu m wavelength and pulse duration of 100 ns (FWHM), with a titanium implant in various gas atmospheres was studied. The Ti implant surface modification was typically studied at the moderate laser beam energy density/fluence of 28 J/cm(2) in the surrounding of air, N-2, O-2 or He. The energy absorbed from the TEA CO2 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 titanium implant surface changes and phenomena were observed, depending on the gas used: (i) creation of cone-like surface structures in the atmospheres of air, N-2 and O-2, and dominant micro-holes/pores in He ambient; (ii) hydrodynamic features, most prominent in air; (iii) formation of titanium nitride and titanium oxide layers, and (iv) occurrence of plasma in front of the implant. It can be concluded from this study that the reported laser fluence and gas ambiences can effectively be applied for enhancing the titanium implant roughness and creation of titanium oxides and nitrides on the strictly localized surface area. The appearance of plasma in front of the implants indicates relatively high temperatures created above the surface. This offers a sterilizing effect, facilitating contaminant-free conditions. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres - Comparative study
VL  - 258
IS  - 7
SP  - 2741
EP  - 2748
DO  - 10.1016/j.apsusc.2011.10.125
ER  - 

@article{
author = "Ciganović, Jovan and Stašić, Jelena and Gaković, Biljana M. and Momčilović, Miloš and Milovanović, Dubravka S. and Bokorov, M. and Trtica, Milan",
year = "2012",
abstract = "Interaction of a TEA CO2 laser, operating at 10.6 mu m wavelength and pulse duration of 100 ns (FWHM), with a titanium implant in various gas atmospheres was studied. The Ti implant surface modification was typically studied at the moderate laser beam energy density/fluence of 28 J/cm(2) in the surrounding of air, N-2, O-2 or He. The energy absorbed from the TEA CO2 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 titanium implant surface changes and phenomena were observed, depending on the gas used: (i) creation of cone-like surface structures in the atmospheres of air, N-2 and O-2, and dominant micro-holes/pores in He ambient; (ii) hydrodynamic features, most prominent in air; (iii) formation of titanium nitride and titanium oxide layers, and (iv) occurrence of plasma in front of the implant. It can be concluded from this study that the reported laser fluence and gas ambiences can effectively be applied for enhancing the titanium implant roughness and creation of titanium oxides and nitrides on the strictly localized surface area. The appearance of plasma in front of the implants indicates relatively high temperatures created above the surface. This offers a sterilizing effect, facilitating contaminant-free conditions. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres - Comparative study",
volume = "258",
number = "7",
pages = "2741-2748",
doi = "10.1016/j.apsusc.2011.10.125"
}

Ciganović, J., Stašić, J., Gaković, B. M., Momčilović, M., Milovanović, D. S., Bokorov, M.,& Trtica, M.. (2012). Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres - Comparative study. in Applied Surface Science, 258(7), 2741-2748.
https://doi.org/10.1016/j.apsusc.2011.10.125

Ciganović J, Stašić J, Gaković BM, Momčilović M, Milovanović DS, Bokorov M, Trtica M. Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres - Comparative study. in Applied Surface Science. 2012;258(7):2741-2748.
doi:10.1016/j.apsusc.2011.10.125 .

Ciganović, Jovan, Stašić, Jelena, Gaković, Biljana M., Momčilović, Miloš, Milovanović, Dubravka S., Bokorov, M., Trtica, Milan, "Surface modification of the titanium implant using TEA CO2 laser pulses in controllable gas atmospheres - Comparative study" in Applied Surface Science, 258, no. 7 (2012):2741-2748,
https://doi.org/10.1016/j.apsusc.2011.10.125 . .

TY  - JOUR
AU  - Đorđević, Vesna R.
AU  - Đustebek, Jasmina B.
AU  - Cvetićanin, Jelena M.
AU  - Veličković, Suzana
AU  - Veljković, Miomir V.
AU  - Bokorov, M.
AU  - Babić-Stojić, Branka S.
AU  - Nešković, Olivera M.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3065
AB  - In an attempt to purify MWNT in mild conditions, we have applied two different methods of purification. The first method of purifying the material was a combination of relatively often used methods, such as etching and acid treatment, and the second method was a relatively new one, using an organic polymer PmPV. Sample purity was obtained with SEM and ESR techniques.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Methods of purification and characterization of carbon nanotubes
VL  - 8
IS  - 4
SP  - 1631
EP  - 1634
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3065
ER  - 

@article{
author = "Đorđević, Vesna R. and Đustebek, Jasmina B. and Cvetićanin, Jelena M. and Veličković, Suzana and Veljković, Miomir V. and Bokorov, M. and Babić-Stojić, Branka S. and Nešković, Olivera M.",
year = "2006",
abstract = "In an attempt to purify MWNT in mild conditions, we have applied two different methods of purification. The first method of purifying the material was a combination of relatively often used methods, such as etching and acid treatment, and the second method was a relatively new one, using an organic polymer PmPV. Sample purity was obtained with SEM and ESR techniques.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Methods of purification and characterization of carbon nanotubes",
volume = "8",
number = "4",
pages = "1631-1634",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3065"
}

Đorđević, V. R., Đustebek, J. B., Cvetićanin, J. M., Veličković, S., Veljković, M. V., Bokorov, M., Babić-Stojić, B. S.,& Nešković, O. M.. (2006). Methods of purification and characterization of carbon nanotubes. in Journal of Optoelectronics and Advanced Materials, 8(4), 1631-1634.
https://hdl.handle.net/21.15107/rcub_vinar_3065

Đorđević VR, Đustebek JB, Cvetićanin JM, Veličković S, Veljković MV, Bokorov M, Babić-Stojić BS, Nešković OM. Methods of purification and characterization of carbon nanotubes. in Journal of Optoelectronics and Advanced Materials. 2006;8(4):1631-1634.
https://hdl.handle.net/21.15107/rcub_vinar_3065 .

Đorđević, Vesna R., Đustebek, Jasmina B., Cvetićanin, Jelena M., Veličković, Suzana, Veljković, Miomir V., Bokorov, M., Babić-Stojić, Branka S., Nešković, Olivera M., "Methods of purification and characterization of carbon nanotubes" in Journal of Optoelectronics and Advanced Materials, 8, no. 4 (2006):1631-1634,
https://hdl.handle.net/21.15107/rcub_vinar_3065 .