TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Zoran M.
AU  - Marinković, Filip S.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir D.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://stacks.iop.org/1402-4896/93/i=10/a=105801?key=crossref.54536d8babe95dbc820e50211f592252
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7898
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
VL  - 93
IS  - 10
SP  - 105801
DO  - 10.1088/1402-4896/aad749
ER  - 

@article{
author = "Peleš, Adriana and Aleksić, Obrad S. and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Nikolić, Zoran M. and Marinković, Filip S. and Mitrić, Miodrag and Blagojević, Vladimir D. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
volume = "93",
number = "10",
pages = "105801",
doi = "10.1088/1402-4896/aad749"
}

Peleš, A., Aleksić, O. S., Pavlović, V. P., Đoković, V., Dojčilović, R., Nikolić, Z. M., Marinković, F. S., Mitrić, M., Blagojević, V. D., Vlahović, B.,& Pavlović, V. B.. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta, 93(10), 105801.
https://doi.org/10.1088/1402-4896/aad749

Peleš A, Aleksić OS, Pavlović VP, Đoković V, Dojčilović R, Nikolić ZM, Marinković FS, Mitrić M, Blagojević VD, Vlahović B, Pavlović VB. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta. 2018;93(10):105801.
doi:10.1088/1402-4896/aad749 .

Peleš, Adriana, Aleksić, Obrad S., Pavlović, Vera P., Đoković, Vladimir, Dojčilović, Radovan, Nikolić, Zoran M., Marinković, Filip S., Mitrić, Miodrag, Blagojević, Vladimir D., Vlahović, Branislav, Pavlović, Vladimir B., "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" in Physica Scripta, 93, no. 10 (2018):105801,
https://doi.org/10.1088/1402-4896/aad749 . .

TY  - JOUR
AU  - Potkonjak, Nebojša I.
AU  - Nikolić, Zoran M.
AU  - Anić, Slobodan R.
AU  - Minić, Dragica M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5978
AB  - Complex oscillatory behavior of electric current and electrode potential were observed during potentiodynamic anodic polarization of Cu in 1 M TFA, applying the current interrupt method for IR drop compensation. This oscillatory behavior was found to give an electrochemical response in the form of a polarization curve with continuous loop. The results presented show that the current interrupt method is capable of eliminating the entire IR drop. Under such conditions, oscillations of the applied potential are in fact those of the double-layer potential. Theoretically predicted interplay between oscillatory behavior of the double-layer potential and the electric current is experimentally demonstrated. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Corrosion Science
T1  - Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method
VL  - 83
SP  - 355
EP  - 358
DO  - 10.1016/j.corsci.2014.02.034
ER  - 

@article{
author = "Potkonjak, Nebojša I. and Nikolić, Zoran M. and Anić, Slobodan R. and Minić, Dragica M.",
year = "2014",
abstract = "Complex oscillatory behavior of electric current and electrode potential were observed during potentiodynamic anodic polarization of Cu in 1 M TFA, applying the current interrupt method for IR drop compensation. This oscillatory behavior was found to give an electrochemical response in the form of a polarization curve with continuous loop. The results presented show that the current interrupt method is capable of eliminating the entire IR drop. Under such conditions, oscillations of the applied potential are in fact those of the double-layer potential. Theoretically predicted interplay between oscillatory behavior of the double-layer potential and the electric current is experimentally demonstrated. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Corrosion Science",
title = "Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method",
volume = "83",
pages = "355-358",
doi = "10.1016/j.corsci.2014.02.034"
}

Potkonjak, N. I., Nikolić, Z. M., Anić, S. R.,& Minić, D. M.. (2014). Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method. in Corrosion Science, 83, 355-358.
https://doi.org/10.1016/j.corsci.2014.02.034

Potkonjak NI, Nikolić ZM, Anić SR, Minić DM. Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method. in Corrosion Science. 2014;83:355-358.
doi:10.1016/j.corsci.2014.02.034 .

Potkonjak, Nebojša I., Nikolić, Zoran M., Anić, Slobodan R., Minić, Dragica M., "Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method" in Corrosion Science, 83 (2014):355-358,
https://doi.org/10.1016/j.corsci.2014.02.034 . .

TY  - JOUR
AU  - Marković, Zoran M.
AU  - Peruško, Davor
AU  - Tošić, Dragana
AU  - Romčević, Nebojša Ž.
AU  - Dramićanin, Miroslav
AU  - Nikolić, Zoran M.
AU  - Todorović-Marković, Biljana
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4349
AB  - Single wall carbon nanotubes (SWCNTs) represent an important group of nanomaterials with attractive electrical, chemical, and mechanical properties. In this work we have investigated the structural, optical and electrical properties of single wall carbon nanotube films deposited on copper substrate and then transferred to polymethyl methacrylate (PMMA). The properties of deposited films were varied by changing different parameters: substrate temperature, deposition time and electric field strength. Atomic force microscopy (AFM) was used to study the deposition process of SWCNT films on copper substrate. AFM analysis has shown that sodium dodecyl sulfate (SDS) micellas were deposited on copper substrate before carbon nanotubes because of their higher mobility. Raman spectroscopy revealed that SWCNTs deposited at elevated temperatures are oxidized. FTIR results showed that COOH groups and Cu2O were generated during electrophoretic process. The SWCNT films were transferred to PMMA substrate and they achieved a sheet resistance of 360 Omega/sq with 79% transparency at 550 nm wavelength and a strong adhesion to the substrate. The main reasons for higher values of sheet resistances of SWCNT thin films compared to those of other authors are oxidation of carbon nanotubes during electrophoresis and the presence of used surfactans in carbon matrix of deposited films.
T2  - Hemijska industrija
T1  - The Effect of Oxidation on Structural and Electrical Properties of Single Wall Carbon Nanotubes
VL  - 65
IS  - 4
SP  - 363
EP  - 370
DO  - 10.2298/HEMIND110221024M
ER  - 

@article{
author = "Marković, Zoran M. and Peruško, Davor and Tošić, Dragana and Romčević, Nebojša Ž. and Dramićanin, Miroslav and Nikolić, Zoran M. and Todorović-Marković, Biljana",
year = "2011",
abstract = "Single wall carbon nanotubes (SWCNTs) represent an important group of nanomaterials with attractive electrical, chemical, and mechanical properties. In this work we have investigated the structural, optical and electrical properties of single wall carbon nanotube films deposited on copper substrate and then transferred to polymethyl methacrylate (PMMA). The properties of deposited films were varied by changing different parameters: substrate temperature, deposition time and electric field strength. Atomic force microscopy (AFM) was used to study the deposition process of SWCNT films on copper substrate. AFM analysis has shown that sodium dodecyl sulfate (SDS) micellas were deposited on copper substrate before carbon nanotubes because of their higher mobility. Raman spectroscopy revealed that SWCNTs deposited at elevated temperatures are oxidized. FTIR results showed that COOH groups and Cu2O were generated during electrophoretic process. The SWCNT films were transferred to PMMA substrate and they achieved a sheet resistance of 360 Omega/sq with 79% transparency at 550 nm wavelength and a strong adhesion to the substrate. The main reasons for higher values of sheet resistances of SWCNT thin films compared to those of other authors are oxidation of carbon nanotubes during electrophoresis and the presence of used surfactans in carbon matrix of deposited films.",
journal = "Hemijska industrija",
title = "The Effect of Oxidation on Structural and Electrical Properties of Single Wall Carbon Nanotubes",
volume = "65",
number = "4",
pages = "363-370",
doi = "10.2298/HEMIND110221024M"
}

Marković, Z. M., Peruško, D., Tošić, D., Romčević, N. Ž., Dramićanin, M., Nikolić, Z. M.,& Todorović-Marković, B.. (2011). The Effect of Oxidation on Structural and Electrical Properties of Single Wall Carbon Nanotubes. in Hemijska industrija, 65(4), 363-370.
https://doi.org/10.2298/HEMIND110221024M

Marković ZM, Peruško D, Tošić D, Romčević NŽ, Dramićanin M, Nikolić ZM, Todorović-Marković B. The Effect of Oxidation on Structural and Electrical Properties of Single Wall Carbon Nanotubes. in Hemijska industrija. 2011;65(4):363-370.
doi:10.2298/HEMIND110221024M .

Marković, Zoran M., Peruško, Davor, Tošić, Dragana, Romčević, Nebojša Ž., Dramićanin, Miroslav, Nikolić, Zoran M., Todorović-Marković, Biljana, "The Effect of Oxidation on Structural and Electrical Properties of Single Wall Carbon Nanotubes" in Hemijska industrija, 65, no. 4 (2011):363-370,
https://doi.org/10.2298/HEMIND110221024M . .

TY  - JOUR
AU  - Janjetović, Kristina D.
AU  - Vucicevic, Ljubica
AU  - Misirkić, Maja
AU  - Vilimanovich, Urosh
AU  - Tovilovic, Gordana
AU  - Zogovic, Nevena
AU  - Nikolić, Zoran M.
AU  - Jovanović, Svetlana P.
AU  - Bumbaširević, Vladimir Ž.
AU  - Trajković, Vladimir S.
AU  - Harhaji-Trajković, Ljubica M.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4205
AB  - Metformin is an antidiabetic drug with anticancer properties, which mainly acts through induction of AMP-activated protein kinase (AMPK). In the present study we investigated the influence of metformin on the in vitro anticancer activity of the well-known chemotherapeutic agent cisplatin. Cell viability was determined by MTT and LDH release assay, oxidative stress and apoptosis (caspase activation, DNA fragmentation, and phosphatidylserine exposure) were assessed by flow cytometry, while activation of AMPK and Akt was analyzed by immunoblotting. Although metformin reduced the number of tumour cells when applied alone, it surprisingly antagonized the cytotoxicity of cisplatin towards U251 human glioma, C6 rat glioma, SHSY5Y human neuroblastoma, L929 mouse fibrosarcoma and HL-60 human leukemia cell lines. Only in B16 mouse melanoma cells metformin augmented the cytotoxicity of cisplatin. In U251 glioma cells metformin suppressed cisplatin-induced apoptotic cell death through inhibition of oxidative stress and caspase activation. The observed cytoprotection was apparently AMPK-independent, as metformin did not further increase cisplatin-induced AMPK activation in U251 cells and other pharmacological AMPK activators failed to block cisplatin-mediated apoptosis. On the other hand, metformin induced Akt activation in cisplatin-treated cells and Akt inhibitor 10-DEBC hydrochloride or phosphoinositide 3-kinase/Akt inhibitor LY294002 abolished metformin-mediated antioxidant and antiapoptotic effects. In conclusion, the antidiabetic drug metformin reduces cisplatin in vitro anticancer activity through AMPK-independent upregulation of Akt survival pathway. These data warrant caution when considering metformin for treatment of diabetic cancer patients receiving cisplatin or as a potential adjuvant in cisplatin-based chemotherapeutic regimens. (c) 2010 Published by Elsevier B.V.
T2  - European Journal of Pharmacology
T1  - Metformin reduces cisplatin-mediated apoptotic death of cancer cells through AMPK-independent activation of Akt
VL  - 651
IS  - 1-3
SP  - 41
EP  - 50
DO  - 10.1016/j.ejphar.2010.11.005
ER  - 

@article{
author = "Janjetović, Kristina D. and Vucicevic, Ljubica and Misirkić, Maja and Vilimanovich, Urosh and Tovilovic, Gordana and Zogovic, Nevena and Nikolić, Zoran M. and Jovanović, Svetlana P. and Bumbaširević, Vladimir Ž. and Trajković, Vladimir S. and Harhaji-Trajković, Ljubica M.",
year = "2011",
abstract = "Metformin is an antidiabetic drug with anticancer properties, which mainly acts through induction of AMP-activated protein kinase (AMPK). In the present study we investigated the influence of metformin on the in vitro anticancer activity of the well-known chemotherapeutic agent cisplatin. Cell viability was determined by MTT and LDH release assay, oxidative stress and apoptosis (caspase activation, DNA fragmentation, and phosphatidylserine exposure) were assessed by flow cytometry, while activation of AMPK and Akt was analyzed by immunoblotting. Although metformin reduced the number of tumour cells when applied alone, it surprisingly antagonized the cytotoxicity of cisplatin towards U251 human glioma, C6 rat glioma, SHSY5Y human neuroblastoma, L929 mouse fibrosarcoma and HL-60 human leukemia cell lines. Only in B16 mouse melanoma cells metformin augmented the cytotoxicity of cisplatin. In U251 glioma cells metformin suppressed cisplatin-induced apoptotic cell death through inhibition of oxidative stress and caspase activation. The observed cytoprotection was apparently AMPK-independent, as metformin did not further increase cisplatin-induced AMPK activation in U251 cells and other pharmacological AMPK activators failed to block cisplatin-mediated apoptosis. On the other hand, metformin induced Akt activation in cisplatin-treated cells and Akt inhibitor 10-DEBC hydrochloride or phosphoinositide 3-kinase/Akt inhibitor LY294002 abolished metformin-mediated antioxidant and antiapoptotic effects. In conclusion, the antidiabetic drug metformin reduces cisplatin in vitro anticancer activity through AMPK-independent upregulation of Akt survival pathway. These data warrant caution when considering metformin for treatment of diabetic cancer patients receiving cisplatin or as a potential adjuvant in cisplatin-based chemotherapeutic regimens. (c) 2010 Published by Elsevier B.V.",
journal = "European Journal of Pharmacology",
title = "Metformin reduces cisplatin-mediated apoptotic death of cancer cells through AMPK-independent activation of Akt",
volume = "651",
number = "1-3",
pages = "41-50",
doi = "10.1016/j.ejphar.2010.11.005"
}

Janjetović, K. D., Vucicevic, L., Misirkić, M., Vilimanovich, U., Tovilovic, G., Zogovic, N., Nikolić, Z. M., Jovanović, S. P., Bumbaširević, V. Ž., Trajković, V. S.,& Harhaji-Trajković, L. M.. (2011). Metformin reduces cisplatin-mediated apoptotic death of cancer cells through AMPK-independent activation of Akt. in European Journal of Pharmacology, 651(1-3), 41-50.
https://doi.org/10.1016/j.ejphar.2010.11.005

Janjetović KD, Vucicevic L, Misirkić M, Vilimanovich U, Tovilovic G, Zogovic N, Nikolić ZM, Jovanović SP, Bumbaširević VŽ, Trajković VS, Harhaji-Trajković LM. Metformin reduces cisplatin-mediated apoptotic death of cancer cells through AMPK-independent activation of Akt. in European Journal of Pharmacology. 2011;651(1-3):41-50.
doi:10.1016/j.ejphar.2010.11.005 .

Janjetović, Kristina D., Vucicevic, Ljubica, Misirkić, Maja, Vilimanovich, Urosh, Tovilovic, Gordana, Zogovic, Nevena, Nikolić, Zoran M., Jovanović, Svetlana P., Bumbaširević, Vladimir Ž., Trajković, Vladimir S., Harhaji-Trajković, Ljubica M., "Metformin reduces cisplatin-mediated apoptotic death of cancer cells through AMPK-independent activation of Akt" in European Journal of Pharmacology, 651, no. 1-3 (2011):41-50,
https://doi.org/10.1016/j.ejphar.2010.11.005 . .

TY  - JOUR
AU  - Harhaji, Ljubica M.
AU  - Isaković, Aleksandra J.
AU  - Vucicevic, Ljubica
AU  - Janjetović, Kristina D.
AU  - Misirkić, Maja
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Nikolić, Nadežda S.
AU  - Vranješ-Đurić, Sanja
AU  - Nikolić, Zoran M.
AU  - Trajković, Vladimir S.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3445
AB  - Purpose. The fullerene (C-60/C-70 mixture-C-60/70) nanocrystalline suspension prepared by solvent exchange method using tetrahydrofyran (THF/nC(60/70)) and polyhydroxylated C-60/70 [C-60/70(OH)(n)] were compared for their ability to modulate cytotoxicity of the proinflammatory cytokine tumor necrosis factor (TNT). Materials and Methods. TNF-induced cytotoxicity was assessed in L929 fibrosarcoma cells by crystal violet assay. The type of cell death (apoptosis/necrosis), production of reactive oxygen species, mitochondrial depolarization and caspase activation were determined by flow cytometry using the appropriate reporter dyes. Results. THF/nC(60/70) augmented, while C-60/70(OH)(n) reduced the cytotoxicity of TNF. The numbers of cells undergoing apoptosis/necrosis, as well as of those displaying the activation of apoptosis-inducing enzymes of caspase family, were respectively increased or reduced by THF/nC(60/70) or C-60/70(OH)(n). The antioxidant N-acetylcysteine and mitochondrial permeability transition inhibitor cyclosporin A each partly blocked the cytotoxic action of TNF, indicating the involvement of oxidative stress and mitochondrial dysfunction in the TNF cytotoxicity. Accordingly, THF/nC(60/70) or C-60/70(OH)(n) potentiated or suppressed, respectively, TNF-triggered oxidative stress and mitochondrial depolarization. Conclusion. The ability of different fullerene preparations to modulate TNF-induced oxidative stress and subsequent cell death suggests their potential value in the TNF-based cancer therapy or prevention of TNF-dependent tissue damage.
T2  - Pharmaceutical Research
T1  - Modulation of tumor necrosis factor-mediated cell death by fullerenes
VL  - 25
IS  - 6
SP  - 1365
EP  - 1376
DO  - 10.1007/s11095-007-9486-y
ER  - 

@article{
author = "Harhaji, Ljubica M. and Isaković, Aleksandra J. and Vucicevic, Ljubica and Janjetović, Kristina D. and Misirkić, Maja and Marković, Zoran M. and Todorović-Marković, Biljana and Nikolić, Nadežda S. and Vranješ-Đurić, Sanja and Nikolić, Zoran M. and Trajković, Vladimir S.",
year = "2008",
abstract = "Purpose. The fullerene (C-60/C-70 mixture-C-60/70) nanocrystalline suspension prepared by solvent exchange method using tetrahydrofyran (THF/nC(60/70)) and polyhydroxylated C-60/70 [C-60/70(OH)(n)] were compared for their ability to modulate cytotoxicity of the proinflammatory cytokine tumor necrosis factor (TNT). Materials and Methods. TNF-induced cytotoxicity was assessed in L929 fibrosarcoma cells by crystal violet assay. The type of cell death (apoptosis/necrosis), production of reactive oxygen species, mitochondrial depolarization and caspase activation were determined by flow cytometry using the appropriate reporter dyes. Results. THF/nC(60/70) augmented, while C-60/70(OH)(n) reduced the cytotoxicity of TNF. The numbers of cells undergoing apoptosis/necrosis, as well as of those displaying the activation of apoptosis-inducing enzymes of caspase family, were respectively increased or reduced by THF/nC(60/70) or C-60/70(OH)(n). The antioxidant N-acetylcysteine and mitochondrial permeability transition inhibitor cyclosporin A each partly blocked the cytotoxic action of TNF, indicating the involvement of oxidative stress and mitochondrial dysfunction in the TNF cytotoxicity. Accordingly, THF/nC(60/70) or C-60/70(OH)(n) potentiated or suppressed, respectively, TNF-triggered oxidative stress and mitochondrial depolarization. Conclusion. The ability of different fullerene preparations to modulate TNF-induced oxidative stress and subsequent cell death suggests their potential value in the TNF-based cancer therapy or prevention of TNF-dependent tissue damage.",
journal = "Pharmaceutical Research",
title = "Modulation of tumor necrosis factor-mediated cell death by fullerenes",
volume = "25",
number = "6",
pages = "1365-1376",
doi = "10.1007/s11095-007-9486-y"
}

Harhaji, L. M., Isaković, A. J., Vucicevic, L., Janjetović, K. D., Misirkić, M., Marković, Z. M., Todorović-Marković, B., Nikolić, N. S., Vranješ-Đurić, S., Nikolić, Z. M.,& Trajković, V. S.. (2008). Modulation of tumor necrosis factor-mediated cell death by fullerenes. in Pharmaceutical Research, 25(6), 1365-1376.
https://doi.org/10.1007/s11095-007-9486-y

Harhaji LM, Isaković AJ, Vucicevic L, Janjetović KD, Misirkić M, Marković ZM, Todorović-Marković B, Nikolić NS, Vranješ-Đurić S, Nikolić ZM, Trajković VS. Modulation of tumor necrosis factor-mediated cell death by fullerenes. in Pharmaceutical Research. 2008;25(6):1365-1376.
doi:10.1007/s11095-007-9486-y .

Harhaji, Ljubica M., Isaković, Aleksandra J., Vucicevic, Ljubica, Janjetović, Kristina D., Misirkić, Maja, Marković, Zoran M., Todorović-Marković, Biljana, Nikolić, Nadežda S., Vranješ-Đurić, Sanja, Nikolić, Zoran M., Trajković, Vladimir S., "Modulation of tumor necrosis factor-mediated cell death by fullerenes" in Pharmaceutical Research, 25, no. 6 (2008):1365-1376,
https://doi.org/10.1007/s11095-007-9486-y . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Draganic, I.
AU  - Marković, Zoran M.
AU  - Stojanović, Zoran A.
AU  - Mitrić, Miodrag
AU  - Romčević, Nebojša Ž.
AU  - Romčević, Maja J.
AU  - Nikolić, Zoran M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3175
AB  - In this work, the results of structural modification of fullerene thin films bombarded by multiple charged nitrogen ions have been reported. The properties of as-deposited and irraditated fullerene thin films have been investigated by Raman and FTIR spectroscopy and AFM analysis. After irradiation by multiple charged nitrogen ions (N(2+), N(5+)) new bondings in fullerene films have been formed and the amorphicity has been enhanced at higher doses. Raman and FTIR spectra showed structural changes of deposited films depending on the energy and implantation dose. AFM analysis showed that the ion beam had destroyed the surface ordering. At lower doses the surface order has been characterized by carbon clusters of 500 nm. At higher doses significantly smaller clusters have been formed (200 nm).
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Multiple charged nitrogen ion beam irradiation of fullerene thin films
VL  - 15
IS  - 2
SP  - 113
EP  - 125
DO  - 10.1080/15363830601179715
ER  - 

@article{
author = "Todorović-Marković, Biljana and Draganic, I. and Marković, Zoran M. and Stojanović, Zoran A. and Mitrić, Miodrag and Romčević, Nebojša Ž. and Romčević, Maja J. and Nikolić, Zoran M.",
year = "2007",
abstract = "In this work, the results of structural modification of fullerene thin films bombarded by multiple charged nitrogen ions have been reported. The properties of as-deposited and irraditated fullerene thin films have been investigated by Raman and FTIR spectroscopy and AFM analysis. After irradiation by multiple charged nitrogen ions (N(2+), N(5+)) new bondings in fullerene films have been formed and the amorphicity has been enhanced at higher doses. Raman and FTIR spectra showed structural changes of deposited films depending on the energy and implantation dose. AFM analysis showed that the ion beam had destroyed the surface ordering. At lower doses the surface order has been characterized by carbon clusters of 500 nm. At higher doses significantly smaller clusters have been formed (200 nm).",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Multiple charged nitrogen ion beam irradiation of fullerene thin films",
volume = "15",
number = "2",
pages = "113-125",
doi = "10.1080/15363830601179715"
}

Todorović-Marković, B., Draganic, I., Marković, Z. M., Stojanović, Z. A., Mitrić, M., Romčević, N. Ž., Romčević, M. J.,& Nikolić, Z. M.. (2007). Multiple charged nitrogen ion beam irradiation of fullerene thin films. in Fullerenes Nanotubes and Carbon Nanostructures, 15(2), 113-125.
https://doi.org/10.1080/15363830601179715

Todorović-Marković B, Draganic I, Marković ZM, Stojanović ZA, Mitrić M, Romčević NŽ, Romčević MJ, Nikolić ZM. Multiple charged nitrogen ion beam irradiation of fullerene thin films. in Fullerenes Nanotubes and Carbon Nanostructures. 2007;15(2):113-125.
doi:10.1080/15363830601179715 .

Todorović-Marković, Biljana, Draganic, I., Marković, Zoran M., Stojanović, Zoran A., Mitrić, Miodrag, Romčević, Nebojša Ž., Romčević, Maja J., Nikolić, Zoran M., "Multiple charged nitrogen ion beam irradiation of fullerene thin films" in Fullerenes Nanotubes and Carbon Nanostructures, 15, no. 2 (2007):113-125,
https://doi.org/10.1080/15363830601179715 . .

TY  - JOUR
AU  - Szepvoelgyi, Janos
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Nikolić, Zoran M.
AU  - Mohai, Ilona
AU  - Farkas, Zsuzsanna
AU  - Toth, Maria
AU  - Kovats, Eva
AU  - Scheier, Paul
AU  - Feil, Stefan
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3162
AB  - Synthesis of fullerenes from graphite powders of different grade was studied in a radiofrequency (RF) plasma reactor. Dependence of fullerene yield on the properties and feed rate of precursors and on the helium content of plasma gas was studied in details. The fullerene yield was influenced by the mean size and the thermal conductivity of graphite particles on the one hand, and the helium content of the gas phase on the other. Soot containing fullerene mixture of 5.9% was produced in best conditions found in this work. The main component of the fullerene mixture was C-60. In addition, it contained about 30% of C-70 (corresponding to a C-60/C-70 mass ratio of 2.64). Higher fullerenes such as C-84 were also detected by mass spectroscopy (MS) and high performance liquid chromatography (HPLC).
T2  - Plasma Chemistry and Plasma Processing
T1  - Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor
VL  - 26
IS  - 6
SP  - 597
EP  - 608
DO  - 10.1007/s11090-006-9036-0
ER  - 

@article{
author = "Szepvoelgyi, Janos and Marković, Zoran M. and Todorović-Marković, Biljana and Nikolić, Zoran M. and Mohai, Ilona and Farkas, Zsuzsanna and Toth, Maria and Kovats, Eva and Scheier, Paul and Feil, Stefan",
year = "2006",
abstract = "Synthesis of fullerenes from graphite powders of different grade was studied in a radiofrequency (RF) plasma reactor. Dependence of fullerene yield on the properties and feed rate of precursors and on the helium content of plasma gas was studied in details. The fullerene yield was influenced by the mean size and the thermal conductivity of graphite particles on the one hand, and the helium content of the gas phase on the other. Soot containing fullerene mixture of 5.9% was produced in best conditions found in this work. The main component of the fullerene mixture was C-60. In addition, it contained about 30% of C-70 (corresponding to a C-60/C-70 mass ratio of 2.64). Higher fullerenes such as C-84 were also detected by mass spectroscopy (MS) and high performance liquid chromatography (HPLC).",
journal = "Plasma Chemistry and Plasma Processing",
title = "Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor",
volume = "26",
number = "6",
pages = "597-608",
doi = "10.1007/s11090-006-9036-0"
}

Szepvoelgyi, J., Marković, Z. M., Todorović-Marković, B., Nikolić, Z. M., Mohai, I., Farkas, Z., Toth, M., Kovats, E., Scheier, P.,& Feil, S.. (2006). Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor. in Plasma Chemistry and Plasma Processing, 26(6), 597-608.
https://doi.org/10.1007/s11090-006-9036-0

Szepvoelgyi J, Marković ZM, Todorović-Marković B, Nikolić ZM, Mohai I, Farkas Z, Toth M, Kovats E, Scheier P, Feil S. Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor. in Plasma Chemistry and Plasma Processing. 2006;26(6):597-608.
doi:10.1007/s11090-006-9036-0 .

Szepvoelgyi, Janos, Marković, Zoran M., Todorović-Marković, Biljana, Nikolić, Zoran M., Mohai, Ilona, Farkas, Zsuzsanna, Toth, Maria, Kovats, Eva, Scheier, Paul, Feil, Stefan, "Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor" in Plasma Chemistry and Plasma Processing, 26, no. 6 (2006):597-608,
https://doi.org/10.1007/s11090-006-9036-0 . .

TY  - JOUR
AU  - Isaković, Aleksandra J.
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Nikolić, Nadežda S.
AU  - Vranješ-Đurić, Sanja
AU  - Mirković, Marija D.
AU  - Dramićanin, Miroslav
AU  - Harhaji, Ljubica M.
AU  - Raičević, Nevena
AU  - Nikolić, Zoran M.
AU  - Trajković, Vladimir S.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3002
AB  - The mechanisms underlying the cytotoxic action of pure fullerene suspension (nano-C-60) and water-soluble polyhydroxylated fullerene [C-60(OH)(n)] were investigated. Crystal violet assay for cell viability demonstrated that nano-C-60 was at least three orders of magnitude more toxic than C-60(OH)(n) to mouse L929 fibrosarcoma, rat C6 glioma, and U251 human glioma cell lines. Flow cytometry analysis of cells stained with propidium iodide (PI), PI/annexin V-fluorescein isothiocyanate, or the redox-sensitive dye dihydrorhodamine revealed that nano-C-60 caused rapid (observable after few hours), reactive oxygen species (ROS)-associated necrosis characterized by cell membrane damage without DNA fragmentation. In contrast, C-60(OH)(n) caused delayed, ROS-independent cell death with characteristics of apoptosis, including DNA fragmentation and loss of cell membrane asymmetry in the absence of increased permeability. Accordingly, the antioxidant N-acetylcysteine protected the cell lines from nano-C-60 toxicity, but not C-60(OH)(n) toxicity, while the pan-caspase inhibitor z-VAD-fmk blocked C-60(OH)(n)-induced apoptosis, but not nano-C-60-mediated necrosis. Finally, C-60(OH)(n) antagonized, while nano-C-60 synergized with, the cytotoxic action of oxidative stress-inducing agents hydrogen peroxide and peroxynitrite donor 3-morpholinosydnonimine. Therefore, unlike polyhydroxylated C-60 that exerts mainly antioxidant/cytoprotective and only mild ROS-independent pro-apoptotic activity, pure crystalline C-60 seems to be endowed with strong pro-oxidant capacity responsible for the rapid necrotic cell death.
T2  - Toxicological Sciences
T1  - Distinct cytotoxic mechanisms of pristine versus hydroxylated fullerene
VL  - 91
IS  - 1
SP  - 173
EP  - 183
DO  - 10.1093/toxsci/kfj127
ER  - 

@article{
author = "Isaković, Aleksandra J. and Marković, Zoran M. and Todorović-Marković, Biljana and Nikolić, Nadežda S. and Vranješ-Đurić, Sanja and Mirković, Marija D. and Dramićanin, Miroslav and Harhaji, Ljubica M. and Raičević, Nevena and Nikolić, Zoran M. and Trajković, Vladimir S.",
year = "2006",
abstract = "The mechanisms underlying the cytotoxic action of pure fullerene suspension (nano-C-60) and water-soluble polyhydroxylated fullerene [C-60(OH)(n)] were investigated. Crystal violet assay for cell viability demonstrated that nano-C-60 was at least three orders of magnitude more toxic than C-60(OH)(n) to mouse L929 fibrosarcoma, rat C6 glioma, and U251 human glioma cell lines. Flow cytometry analysis of cells stained with propidium iodide (PI), PI/annexin V-fluorescein isothiocyanate, or the redox-sensitive dye dihydrorhodamine revealed that nano-C-60 caused rapid (observable after few hours), reactive oxygen species (ROS)-associated necrosis characterized by cell membrane damage without DNA fragmentation. In contrast, C-60(OH)(n) caused delayed, ROS-independent cell death with characteristics of apoptosis, including DNA fragmentation and loss of cell membrane asymmetry in the absence of increased permeability. Accordingly, the antioxidant N-acetylcysteine protected the cell lines from nano-C-60 toxicity, but not C-60(OH)(n) toxicity, while the pan-caspase inhibitor z-VAD-fmk blocked C-60(OH)(n)-induced apoptosis, but not nano-C-60-mediated necrosis. Finally, C-60(OH)(n) antagonized, while nano-C-60 synergized with, the cytotoxic action of oxidative stress-inducing agents hydrogen peroxide and peroxynitrite donor 3-morpholinosydnonimine. Therefore, unlike polyhydroxylated C-60 that exerts mainly antioxidant/cytoprotective and only mild ROS-independent pro-apoptotic activity, pure crystalline C-60 seems to be endowed with strong pro-oxidant capacity responsible for the rapid necrotic cell death.",
journal = "Toxicological Sciences",
title = "Distinct cytotoxic mechanisms of pristine versus hydroxylated fullerene",
volume = "91",
number = "1",
pages = "173-183",
doi = "10.1093/toxsci/kfj127"
}

Isaković, A. J., Marković, Z. M., Todorović-Marković, B., Nikolić, N. S., Vranješ-Đurić, S., Mirković, M. D., Dramićanin, M., Harhaji, L. M., Raičević, N., Nikolić, Z. M.,& Trajković, V. S.. (2006). Distinct cytotoxic mechanisms of pristine versus hydroxylated fullerene. in Toxicological Sciences, 91(1), 173-183.
https://doi.org/10.1093/toxsci/kfj127

Isaković AJ, Marković ZM, Todorović-Marković B, Nikolić NS, Vranješ-Đurić S, Mirković MD, Dramićanin M, Harhaji LM, Raičević N, Nikolić ZM, Trajković VS. Distinct cytotoxic mechanisms of pristine versus hydroxylated fullerene. in Toxicological Sciences. 2006;91(1):173-183.
doi:10.1093/toxsci/kfj127 .

Isaković, Aleksandra J., Marković, Zoran M., Todorović-Marković, Biljana, Nikolić, Nadežda S., Vranješ-Đurić, Sanja, Mirković, Marija D., Dramićanin, Miroslav, Harhaji, Ljubica M., Raičević, Nevena, Nikolić, Zoran M., Trajković, Vladimir S., "Distinct cytotoxic mechanisms of pristine versus hydroxylated fullerene" in Toxicological Sciences, 91, no. 1 (2006):173-183,
https://doi.org/10.1093/toxsci/kfj127 . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Mohai, I
AU  - Nikolić, Zoran M.
AU  - Farkas, Z
AU  - Szepvolgyi, J
AU  - Kovats, E
AU  - Scheier, P
AU  - Feil, S
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2974
AB  - This paper presents results on fullerene formation during the processing of different graphite powders in an RF thermal plasma reactor. Graphite powders of different particle size and purity were fed into the reactor (Aldrich, KS4). Optical emission spectroscopy of atomic and molecular species is used as a diagnostic tool of the RF plasma flame. It was found that rotational and vibrational temperatures of C-2 radicals depend on the feed rate of the precursor used. The volumes of RF plasma flame during processing of graphite powders have been calculated. By analysing scanning electron microscopy micrographs of soot, the evaporation rate of the precursors used has been evaluated as well. Based on the obtained values of volumes of plasma flame and evaporation rate of starting powders, the concentration of C-2 radicals has been calculated.
T2  - Journal of Physics. D: Applied Physics
T1  - RF thermal plasma processing of fullerenes
VL  - 39
IS  - 2
SP  - 320
EP  - 326
DO  - 10.1088/0022-3727/39/2/012
ER  - 

@article{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Mohai, I and Nikolić, Zoran M. and Farkas, Z and Szepvolgyi, J and Kovats, E and Scheier, P and Feil, S",
year = "2006",
abstract = "This paper presents results on fullerene formation during the processing of different graphite powders in an RF thermal plasma reactor. Graphite powders of different particle size and purity were fed into the reactor (Aldrich, KS4). Optical emission spectroscopy of atomic and molecular species is used as a diagnostic tool of the RF plasma flame. It was found that rotational and vibrational temperatures of C-2 radicals depend on the feed rate of the precursor used. The volumes of RF plasma flame during processing of graphite powders have been calculated. By analysing scanning electron microscopy micrographs of soot, the evaporation rate of the precursors used has been evaluated as well. Based on the obtained values of volumes of plasma flame and evaporation rate of starting powders, the concentration of C-2 radicals has been calculated.",
journal = "Journal of Physics. D: Applied Physics",
title = "RF thermal plasma processing of fullerenes",
volume = "39",
number = "2",
pages = "320-326",
doi = "10.1088/0022-3727/39/2/012"
}

Todorović-Marković, B., Marković, Z. M., Mohai, I., Nikolić, Z. M., Farkas, Z., Szepvolgyi, J., Kovats, E., Scheier, P.,& Feil, S.. (2006). RF thermal plasma processing of fullerenes. in Journal of Physics. D: Applied Physics, 39(2), 320-326.
https://doi.org/10.1088/0022-3727/39/2/012

Todorović-Marković B, Marković ZM, Mohai I, Nikolić ZM, Farkas Z, Szepvolgyi J, Kovats E, Scheier P, Feil S. RF thermal plasma processing of fullerenes. in Journal of Physics. D: Applied Physics. 2006;39(2):320-326.
doi:10.1088/0022-3727/39/2/012 .

Todorović-Marković, Biljana, Marković, Zoran M., Mohai, I, Nikolić, Zoran M., Farkas, Z, Szepvolgyi, J, Kovats, E, Scheier, P, Feil, S, "RF thermal plasma processing of fullerenes" in Journal of Physics. D: Applied Physics, 39, no. 2 (2006):320-326,
https://doi.org/10.1088/0022-3727/39/2/012 . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Mohai, I.
AU  - Nikolić, Zoran M.
AU  - Farkas, Z.
AU  - Szepvolgyi, J.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6603
AB  - In this paper, report on fullerene formation in a radio-frequency (RF) thermal plasma reactor has been presented. In order to determine the degree of evaporation of the graphite precursor used, analysis of SEM micrographs of deposited soot in different parts of RF reactor has been made. It was found that the degree of graphite evaporation and fullerene yield varied depending on the distance from the plasma torch nozzle. Carbon concentration and rotational temperature of C-2 radicals in plasma flame have been calculated as well. The concentration of C-2 radicals in plasma flame, which participated in fullerene formation, was in the range of (1.75-3.88)- 10(20) m(-3).
T2  - Materials Science Forum
T1  - Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor
VL  - 518
SP  - 211
EP  - 216
DO  - 10.4028/www.scientific.net/MSF.518.211
ER  - 

@article{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Mohai, I. and Nikolić, Zoran M. and Farkas, Z. and Szepvolgyi, J.",
year = "2006",
abstract = "In this paper, report on fullerene formation in a radio-frequency (RF) thermal plasma reactor has been presented. In order to determine the degree of evaporation of the graphite precursor used, analysis of SEM micrographs of deposited soot in different parts of RF reactor has been made. It was found that the degree of graphite evaporation and fullerene yield varied depending on the distance from the plasma torch nozzle. Carbon concentration and rotational temperature of C-2 radicals in plasma flame have been calculated as well. The concentration of C-2 radicals in plasma flame, which participated in fullerene formation, was in the range of (1.75-3.88)- 10(20) m(-3).",
journal = "Materials Science Forum",
title = "Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor",
volume = "518",
pages = "211-216",
doi = "10.4028/www.scientific.net/MSF.518.211"
}

Todorović-Marković, B., Marković, Z. M., Mohai, I., Nikolić, Z. M., Farkas, Z.,& Szepvolgyi, J.. (2006). Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor. in Materials Science Forum, 518, 211-216.
https://doi.org/10.4028/www.scientific.net/MSF.518.211

Todorović-Marković B, Marković ZM, Mohai I, Nikolić ZM, Farkas Z, Szepvolgyi J. Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor. in Materials Science Forum. 2006;518:211-216.
doi:10.4028/www.scientific.net/MSF.518.211 .

Todorović-Marković, Biljana, Marković, Zoran M., Mohai, I., Nikolić, Zoran M., Farkas, Z., Szepvolgyi, J., "Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor" in Materials Science Forum, 518 (2006):211-216,
https://doi.org/10.4028/www.scientific.net/MSF.518.211 . .

TY  - JOUR
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Mohai, I
AU  - Karoly, Z
AU  - Szepvolgyi, J
AU  - Farkas, Z
AU  - Nikolić, Zoran M.
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2910
AB  - Results on studies of molecular spectra emitted in the initial stages of fullerene synthesis during processing of graphite powder in RF thermal plasma conditions are presented in this work. CN-usually present in carbon plasmas-and C-2 were found as dominant molecular species. The role of CN radicals on the fullerene formation was discussed in detail. Intensities of CN and C-2 lines were studied against the composition of gas phase and the feed rate of graphite powder. The rotational-vibrational temperatures of CN species were calculated by fitting the experimental spectra to the simulated ones. It was concluded that in the plasma region CN radicals could be formed by the reaction Of C-2 with atomic nitrogen at smaller loads. This reaction lowered the yield of fullerenes. At larger loads, C2 formation was decreased due to lower temperature of the particles compared to smaller load. The CN radicals were produced by the surface reaction of the hot carbon particles with nitrogen atoms. Results confirmed that for effective fullerene synthesis, the nitrogen content of the precursors and the plasma gases should be minimized.
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Optical emission study of RF thermal plasma during fullerene synthesis
VL  - 13
IS  - 3
SP  - 215
EP  - 226
DO  - 10.1081/FST-200056236
ER  - 

@article{
author = "Marković, Zoran M. and Todorović-Marković, Biljana and Mohai, I and Karoly, Z and Szepvolgyi, J and Farkas, Z and Nikolić, Zoran M.",
year = "2005",
abstract = "Results on studies of molecular spectra emitted in the initial stages of fullerene synthesis during processing of graphite powder in RF thermal plasma conditions are presented in this work. CN-usually present in carbon plasmas-and C-2 were found as dominant molecular species. The role of CN radicals on the fullerene formation was discussed in detail. Intensities of CN and C-2 lines were studied against the composition of gas phase and the feed rate of graphite powder. The rotational-vibrational temperatures of CN species were calculated by fitting the experimental spectra to the simulated ones. It was concluded that in the plasma region CN radicals could be formed by the reaction Of C-2 with atomic nitrogen at smaller loads. This reaction lowered the yield of fullerenes. At larger loads, C2 formation was decreased due to lower temperature of the particles compared to smaller load. The CN radicals were produced by the surface reaction of the hot carbon particles with nitrogen atoms. Results confirmed that for effective fullerene synthesis, the nitrogen content of the precursors and the plasma gases should be minimized.",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Optical emission study of RF thermal plasma during fullerene synthesis",
volume = "13",
number = "3",
pages = "215-226",
doi = "10.1081/FST-200056236"
}

Marković, Z. M., Todorović-Marković, B., Mohai, I., Karoly, Z., Szepvolgyi, J., Farkas, Z.,& Nikolić, Z. M.. (2005). Optical emission study of RF thermal plasma during fullerene synthesis. in Fullerenes Nanotubes and Carbon Nanostructures, 13(3), 215-226.
https://doi.org/10.1081/FST-200056236

Marković ZM, Todorović-Marković B, Mohai I, Karoly Z, Szepvolgyi J, Farkas Z, Nikolić ZM. Optical emission study of RF thermal plasma during fullerene synthesis. in Fullerenes Nanotubes and Carbon Nanostructures. 2005;13(3):215-226.
doi:10.1081/FST-200056236 .

Marković, Zoran M., Todorović-Marković, Biljana, Mohai, I, Karoly, Z, Szepvolgyi, J, Farkas, Z, Nikolić, Zoran M., "Optical emission study of RF thermal plasma during fullerene synthesis" in Fullerenes Nanotubes and Carbon Nanostructures, 13, no. 3 (2005):215-226,
https://doi.org/10.1081/FST-200056236 . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Mohai, I
AU  - Karoly, Z
AU  - Farkas, Z
AU  - Nikolić, Zoran M.
AU  - Szepvolgyi, J
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2863
AB  - In this work, the results of an optical emission study of fullerene synthesis in an inductively coupled radio frequency thermal plasma reactor are presented. The emission spectroscopy studies, based on the use of the Swan C-2 (0, 1) and CN (0,0) vibrational emission spectra, were carried out to determine the plasma temperature. The evaporation process of graphite powder was observed by scanning electron microscopy.
T2  - Journal of the Serbian Chemical Society
T1  - Optical diagnostics of fullerene synthesis in the RF thermal plasma process
VL  - 70
IS  - 1
SP  - 79
EP  - 85
DO  - 10.2298/JSC0501079T
ER  - 

@article{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Mohai, I and Karoly, Z and Farkas, Z and Nikolić, Zoran M. and Szepvolgyi, J",
year = "2005",
abstract = "In this work, the results of an optical emission study of fullerene synthesis in an inductively coupled radio frequency thermal plasma reactor are presented. The emission spectroscopy studies, based on the use of the Swan C-2 (0, 1) and CN (0,0) vibrational emission spectra, were carried out to determine the plasma temperature. The evaporation process of graphite powder was observed by scanning electron microscopy.",
journal = "Journal of the Serbian Chemical Society",
title = "Optical diagnostics of fullerene synthesis in the RF thermal plasma process",
volume = "70",
number = "1",
pages = "79-85",
doi = "10.2298/JSC0501079T"
}

Todorović-Marković, B., Marković, Z. M., Mohai, I., Karoly, Z., Farkas, Z., Nikolić, Z. M.,& Szepvolgyi, J.. (2005). Optical diagnostics of fullerene synthesis in the RF thermal plasma process. in Journal of the Serbian Chemical Society, 70(1), 79-85.
https://doi.org/10.2298/JSC0501079T

Todorović-Marković B, Marković ZM, Mohai I, Karoly Z, Farkas Z, Nikolić ZM, Szepvolgyi J. Optical diagnostics of fullerene synthesis in the RF thermal plasma process. in Journal of the Serbian Chemical Society. 2005;70(1):79-85.
doi:10.2298/JSC0501079T .

Todorović-Marković, Biljana, Marković, Zoran M., Mohai, I, Karoly, Z, Farkas, Z, Nikolić, Zoran M., Szepvolgyi, J, "Optical diagnostics of fullerene synthesis in the RF thermal plasma process" in Journal of the Serbian Chemical Society, 70, no. 1 (2005):79-85,
https://doi.org/10.2298/JSC0501079T . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Nikolić, Zoran M.
AU  - Ristić, Zoran
AU  - Nenadović, T
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2817
AB  - In this work, the results of optical emission study of C-2 radicals generated in carbon arc plasma are presented. It was found that a rotational temperature of carbon vapor depends significantly on carbon concentration and inert gas pressure. Experimentally obtained rotational temperature of C-2 emission spectra has been fitted with calculated spectra.
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Optical emission measurements of rotational temperature of C-2 radicals in fullerene processing
VL  - 12
IS  - 3
SP  - 647
EP  - 657
DO  - 10.1081/FST-200026952
ER  - 

@article{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Nikolić, Zoran M. and Ristić, Zoran and Nenadović, T",
year = "2004",
abstract = "In this work, the results of optical emission study of C-2 radicals generated in carbon arc plasma are presented. It was found that a rotational temperature of carbon vapor depends significantly on carbon concentration and inert gas pressure. Experimentally obtained rotational temperature of C-2 emission spectra has been fitted with calculated spectra.",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Optical emission measurements of rotational temperature of C-2 radicals in fullerene processing",
volume = "12",
number = "3",
pages = "647-657",
doi = "10.1081/FST-200026952"
}

Todorović-Marković, B., Marković, Z. M., Nikolić, Z. M., Ristić, Z.,& Nenadović, T.. (2004). Optical emission measurements of rotational temperature of C-2 radicals in fullerene processing. in Fullerenes Nanotubes and Carbon Nanostructures, 12(3), 647-657.
https://doi.org/10.1081/FST-200026952

Todorović-Marković B, Marković ZM, Nikolić ZM, Ristić Z, Nenadović T. Optical emission measurements of rotational temperature of C-2 radicals in fullerene processing. in Fullerenes Nanotubes and Carbon Nanostructures. 2004;12(3):647-657.
doi:10.1081/FST-200026952 .

Todorović-Marković, Biljana, Marković, Zoran M., Nikolić, Zoran M., Ristić, Zoran, Nenadović, T, "Optical emission measurements of rotational temperature of C-2 radicals in fullerene processing" in Fullerenes Nanotubes and Carbon Nanostructures, 12, no. 3 (2004):647-657,
https://doi.org/10.1081/FST-200026952 . .

TY  - JOUR
AU  - Živković, L.
AU  - Nikolić, Zoran M.
AU  - Bošković, Snežana B.
AU  - Miljkovic, M
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2773
AB  - Si3N4-TiN ceramics sintered with Y2O3 and Y2O3 + Al2O3 as sintering aids and various content of TiN (0-50 wt.%) were investigated regarding their microstructural and electrical properties. Electroconductive composites were obtained with TiN content higher than 20 vol.%. Computer simulation of conductivity versus concentration of TiN has been done in respect of different models. The influence of dimensionality and type of conductive network on the critical exponent s in the power law, which describes the conductivity of composites, has been discussed. The addition of beta-Si3N4 seeds affected fracture toughness in Si3N4-36 wt.% TiN composites while only a slight change in electroconductivity of the composites was observed at the same time. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites
VL  - 373
IS  - 1-2
SP  - 231
EP  - 236
DO  - 10.1016/j.jallcom.2003.10.036
ER  - 

@article{
author = "Živković, L. and Nikolić, Zoran M. and Bošković, Snežana B. and Miljkovic, M",
year = "2004",
abstract = "Si3N4-TiN ceramics sintered with Y2O3 and Y2O3 + Al2O3 as sintering aids and various content of TiN (0-50 wt.%) were investigated regarding their microstructural and electrical properties. Electroconductive composites were obtained with TiN content higher than 20 vol.%. Computer simulation of conductivity versus concentration of TiN has been done in respect of different models. The influence of dimensionality and type of conductive network on the critical exponent s in the power law, which describes the conductivity of composites, has been discussed. The addition of beta-Si3N4 seeds affected fracture toughness in Si3N4-36 wt.% TiN composites while only a slight change in electroconductivity of the composites was observed at the same time. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites",
volume = "373",
number = "1-2",
pages = "231-236",
doi = "10.1016/j.jallcom.2003.10.036"
}

Živković, L., Nikolić, Z. M., Bošković, S. B.,& Miljkovic, M.. (2004). Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites. in Journal of Alloys and Compounds, 373(1-2), 231-236.
https://doi.org/10.1016/j.jallcom.2003.10.036

Živković L, Nikolić ZM, Bošković SB, Miljkovic M. Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites. in Journal of Alloys and Compounds. 2004;373(1-2):231-236.
doi:10.1016/j.jallcom.2003.10.036 .

Živković, L., Nikolić, Zoran M., Bošković, Snežana B., Miljkovic, M, "Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites" in Journal of Alloys and Compounds, 373, no. 1-2 (2004):231-236,
https://doi.org/10.1016/j.jallcom.2003.10.036 . .

TY  - CONF
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Nikolić, Zoran M.
AU  - Nenadović, T
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6457
AB  - In this work, we present the results of a spectroscopic investigation of the emission from C-2 radicals of carbon arc in inert gas-helium. The rotational temperature Of C-2 radicals was determined in dependence of electrode-anode- diameter. It was found that the rotational temperature of diatomic carbon molecules decreased when electrode diameter decreased. The pressure dependence on rotational temperature has shown that the rotational temperature Of C-2 decreased with the increase of gas pressure.
T1  - The effect of carbon concentration on rotational plasma temperature of carbon arc in helium
IS  - 76
SP  - 233
EP  - 236
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6457
ER  - 

@conference{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Nikolić, Zoran M. and Nenadović, T",
year = "2003",
abstract = "In this work, we present the results of a spectroscopic investigation of the emission from C-2 radicals of carbon arc in inert gas-helium. The rotational temperature Of C-2 radicals was determined in dependence of electrode-anode- diameter. It was found that the rotational temperature of diatomic carbon molecules decreased when electrode diameter decreased. The pressure dependence on rotational temperature has shown that the rotational temperature Of C-2 decreased with the increase of gas pressure.",
title = "The effect of carbon concentration on rotational plasma temperature of carbon arc in helium",
number = "76",
pages = "233-236",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6457"
}

Todorović-Marković, B., Marković, Z. M., Nikolić, Z. M.,& Nenadović, T.. (2003). The effect of carbon concentration on rotational plasma temperature of carbon arc in helium. (76), 233-236.
https://hdl.handle.net/21.15107/rcub_vinar_6457

Todorović-Marković B, Marković ZM, Nikolić ZM, Nenadović T. The effect of carbon concentration on rotational plasma temperature of carbon arc in helium. 2003;(76):233-236.
https://hdl.handle.net/21.15107/rcub_vinar_6457 .

Todorović-Marković, Biljana, Marković, Zoran M., Nikolić, Zoran M., Nenadović, T, "The effect of carbon concentration on rotational plasma temperature of carbon arc in helium", no. 76 (2003):233-236,
https://hdl.handle.net/21.15107/rcub_vinar_6457 .

TY  - JOUR
AU  - Živković, LM
AU  - Nikolić, Zoran M.
AU  - Bošković, SM
PY  - 2002
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6325
AB  - Electrical resistivity Of Si3N4-TiN based composites obtained during liquid phase sintering was investigated regarding the amount of TiN and influence of yttria and various rare earth oxides used as sintering aids. The electrical resistivity of composites decreases remarkably at certain concentration of conductive TiN phase, known as percolation concentration. In this paper different conductivity models have been reviewed in order to discuss the experimental results. On the basis of starting particle size and microstructure characteristics the computer simulation of conductivity-concentration curves have been done and corresponding parameters that determine the power of conductivity were determined.
T2  - Key Engineering Materials
T1  - Electrical properties and percolation concentration in Si3N4-TiN based composites
VL  - 206-2
SP  - 1489
EP  - 1492
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6325
ER  - 

@article{
author = "Živković, LM and Nikolić, Zoran M. and Bošković, SM",
year = "2002",
abstract = "Electrical resistivity Of Si3N4-TiN based composites obtained during liquid phase sintering was investigated regarding the amount of TiN and influence of yttria and various rare earth oxides used as sintering aids. The electrical resistivity of composites decreases remarkably at certain concentration of conductive TiN phase, known as percolation concentration. In this paper different conductivity models have been reviewed in order to discuss the experimental results. On the basis of starting particle size and microstructure characteristics the computer simulation of conductivity-concentration curves have been done and corresponding parameters that determine the power of conductivity were determined.",
journal = "Key Engineering Materials",
title = "Electrical properties and percolation concentration in Si3N4-TiN based composites",
volume = "206-2",
pages = "1489-1492",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6325"
}

Živković, L., Nikolić, Z. M.,& Bošković, S.. (2002). Electrical properties and percolation concentration in Si3N4-TiN based composites. in Key Engineering Materials, 206-2, 1489-1492.
https://hdl.handle.net/21.15107/rcub_vinar_6325

Živković L, Nikolić ZM, Bošković S. Electrical properties and percolation concentration in Si3N4-TiN based composites. in Key Engineering Materials. 2002;206-2:1489-1492.
https://hdl.handle.net/21.15107/rcub_vinar_6325 .

Živković, LM, Nikolić, Zoran M., Bošković, SM, "Electrical properties and percolation concentration in Si3N4-TiN based composites" in Key Engineering Materials, 206-2 (2002):1489-1492,
https://hdl.handle.net/21.15107/rcub_vinar_6325 .