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Peleš, Adriana

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  • Peleš, Adriana (27)

Author's Bibliography

Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films

Peleš, Adriana; Aleksić, Obrad S.; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Nikolić, Z.; Marinković, F.; Mitrić, Miodrag; Blagojević, Vladimir A.; Vlahović, Branislav; Pavlović, Vladimir B.

(IOP Publishing, 2018)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4079
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.
PB  - IOP Publishing
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
SP  - 105801
VL  - 93
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, Z. and Marinković, F. and Mitrić, Miodrag and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4079",
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.",
publisher = "IOP Publishing",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
pages = "105801",
volume = "93",
doi = "10.1088/1402-4896/aad749"
}
1
3
4
4

Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films

Peleš, Adriana; Aleksić, Obrad S.; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Nikolić, Z.; Marinković, F.; Mitrić, Miodrag; Blagojević, Vladimir A.; Vlahović, Branislav; Pavlović, Vladimir B.

(IOP Publishing, 2018)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4608
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.
PB  - IOP Publishing
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
SP  - 105801
VL  - 93
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, Z. and Marinković, F. and Mitrić, Miodrag and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4608",
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.",
publisher = "IOP Publishing",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
pages = "105801",
volume = "93",
doi = "10.1088/1402-4896/aad749"
}
1
3
4
4

Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites

Živojinović, Jelena; Peleš, Adriana; Blagojević, Vladimir A.; Kosanović, Darko; Pavlović, Vladimir B.

(2016)

TY  - CONF
AU  - Živojinović, Jelena
AU  - Peleš, Adriana
AU  - Blagojević, Vladimir A.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/861
AB  - Mechanical activation leads to the creation of new surfaces and decrease in particle size of the initial powder particles, which affects the crystallization of PVDF matrix.  In addition, prolonged mechanical activation leads to agglomeration of nanoparticles agglomerates of different sizes. 
Microstructural changes due to mechanical activation in ZnO, BaTiO3, SrTiO3 and TiO2 powders were investigated using electron microscopy (TEM and SEM), x-ray diffraction (XRD) and particle size analysis (PSA). These were correlated with molecular simulations of mechanical properties of PVDF-nanocluster composites with different oxide nanocluster sizes (1, 1.5 and 2 nm) 
Each system was simulated using a periodic system of metal oxide nanocrystal inside β-PVDF matrix. β-PVDF was chosen for its superior properties over α- and γ- phases. Geometry of each system was optimized prior to the calculation of mechanical properties using GULP v4.3 software package. 
Molecular simulations show that, in general, mechanical properties (Young modulus as an indication of elasticity, Shear modulus as an indication of hardness) for all systems improve with decrease in nanocluster size. This suggests that mechanical activation of fillers in PVDF-metal oxide nanoparticle composites should have a positive effect on the mechanical properties of composite systems. 
This suggests mechanical activation as an easy an inexpensive method of improving mechanical properties of polymer-nanocrystal composite materials.
T1  - Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites
ER  - 
@conference{
author = "Živojinović, Jelena and Peleš, Adriana and Blagojević, Vladimir A. and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/861",
abstract = "Mechanical activation leads to the creation of new surfaces and decrease in particle size of the initial powder particles, which affects the crystallization of PVDF matrix.  In addition, prolonged mechanical activation leads to agglomeration of nanoparticles agglomerates of different sizes. 
Microstructural changes due to mechanical activation in ZnO, BaTiO3, SrTiO3 and TiO2 powders were investigated using electron microscopy (TEM and SEM), x-ray diffraction (XRD) and particle size analysis (PSA). These were correlated with molecular simulations of mechanical properties of PVDF-nanocluster composites with different oxide nanocluster sizes (1, 1.5 and 2 nm) 
Each system was simulated using a periodic system of metal oxide nanocrystal inside β-PVDF matrix. β-PVDF was chosen for its superior properties over α- and γ- phases. Geometry of each system was optimized prior to the calculation of mechanical properties using GULP v4.3 software package. 
Molecular simulations show that, in general, mechanical properties (Young modulus as an indication of elasticity, Shear modulus as an indication of hardness) for all systems improve with decrease in nanocluster size. This suggests that mechanical activation of fillers in PVDF-metal oxide nanoparticle composites should have a positive effect on the mechanical properties of composite systems. 
This suggests mechanical activation as an easy an inexpensive method of improving mechanical properties of polymer-nanocrystal composite materials.",
title = "Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites"
}

Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites

Živojinović, Jelena; Peleš, Adriana; Blagojević, Vladimir A.; Kosanović, Darko; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2016)

TY  - CONF
AU  - Živojinović, Jelena
AU  - Peleš, Adriana
AU  - Blagojević, Vladimir A.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/882
AB  - The influence of mechanically activated fillers (ZnO, BaTiO3 and SrTiO3 ultra-fine powders) on mechanical properties of poly(vinylidene) fluoride (PVDF) and oxide nanoparticle composite was investigated using molecular simulations. Mechanical activation leads to the creation of new surfaces and the comminution of the initial powder particles, which affects the crystallization of PVDF matrix. In addition, prolonged mechanical activation leads to agglomeration of nanoparticles into “soft” and “hard” agglomerates of different sizes. All of this has a significant effect on mechanical properties of PVDF-nanoparticle composites. Microstructural changes due to mechanical activation in ZnO, BaTiO3 and SrTiO3 powders were investigated using SEM and XRD, while dependence of mechanical properties on nanoparticle size was investigated using molecular simulation. These show that smaller nanoparticles significantly enhance the mechanical properties of PVDF-nanoparticle composite and allow use of mechanical activation as a means of reducing the amount of nanoparticle filler in the composite, while achieving the same of superior mechanical properties.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites
SP  - 63
EP  - 64
ER  - 
@conference{
author = "Živojinović, Jelena and Peleš, Adriana and Blagojević, Vladimir A. and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/882",
abstract = "The influence of mechanically activated fillers (ZnO, BaTiO3 and SrTiO3 ultra-fine powders) on mechanical properties of poly(vinylidene) fluoride (PVDF) and oxide nanoparticle composite was investigated using molecular simulations. Mechanical activation leads to the creation of new surfaces and the comminution of the initial powder particles, which affects the crystallization of PVDF matrix. In addition, prolonged mechanical activation leads to agglomeration of nanoparticles into “soft” and “hard” agglomerates of different sizes. All of this has a significant effect on mechanical properties of PVDF-nanoparticle composites. Microstructural changes due to mechanical activation in ZnO, BaTiO3 and SrTiO3 powders were investigated using SEM and XRD, while dependence of mechanical properties on nanoparticle size was investigated using molecular simulation. These show that smaller nanoparticles significantly enhance the mechanical properties of PVDF-nanoparticle composite and allow use of mechanical activation as a means of reducing the amount of nanoparticle filler in the composite, while achieving the same of superior mechanical properties.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites",
pages = "63-64"
}

Structural investigation of mechanically activated ZnO powder

Peleš, Adriana; Pavlović, Vera P.; Filipović, Suzana; Obradović, Nina; Mančić, Lidija; Krstić, Jugoslav; Mitrić, Miodrag; Vlahović, Branislav; Rašić, Goran; Kosanović, Darko; Pavlović, Vladimir B.

(Elsevier, 2015)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Pavlović, Vera P.
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Mančić, Lidija
AU  - Krstić, Jugoslav
AU  - Mitrić, Miodrag
AU  - Vlahović, Branislav
AU  - Rašić, Goran
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/3521
AB  - Abstract Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation. © 2015 Published by Elsevier B.V.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Structural investigation of mechanically activated ZnO powder
SP  - 971
EP  - 979
VL  - 648
DO  - 10.1016/j.jallcom.2015.06.247
ER  - 
@article{
author = "Peleš, Adriana and Pavlović, Vera P. and Filipović, Suzana and Obradović, Nina and Mančić, Lidija and Krstić, Jugoslav and Mitrić, Miodrag and Vlahović, Branislav and Rašić, Goran and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/3521",
abstract = "Abstract Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation. © 2015 Published by Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Structural investigation of mechanically activated ZnO powder",
pages = "971-979",
volume = "648",
doi = "10.1016/j.jallcom.2015.06.247"
}
8
9
9

Structural investigation of mechanically activated ZnO powder

Peleš, Adriana; Pavlović, Vera P.; Filipović, Suzana; Obradović, Nina; Mančić, Lidija; Krstić, Jugoslav; Mitrić, Miodrag; Vlahović, Branislav; Rašić, Goran; Kosanović, Darko; Pavlović, Vladimir B.

(Elsevier, 2015)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Pavlović, Vera P.
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Mančić, Lidija
AU  - Krstić, Jugoslav
AU  - Mitrić, Miodrag
AU  - Vlahović, Branislav
AU  - Rašić, Goran
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/4673
AB  - Abstract Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation. © 2015 Published by Elsevier B.V.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Structural investigation of mechanically activated ZnO powder
SP  - 971
EP  - 979
VL  - 648
DO  - 10.1016/j.jallcom.2015.06.247
ER  - 
@article{
author = "Peleš, Adriana and Pavlović, Vera P. and Filipović, Suzana and Obradović, Nina and Mančić, Lidija and Krstić, Jugoslav and Mitrić, Miodrag and Vlahović, Branislav and Rašić, Goran and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/4673",
abstract = "Abstract Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation. © 2015 Published by Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Structural investigation of mechanically activated ZnO powder",
pages = "971-979",
volume = "648",
doi = "10.1016/j.jallcom.2015.06.247"
}
8
9
9

The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics

Obradović, Nina; Đorđević, Nataša; Peleš, Adriana; Filipović, Suzana; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : International Institute for the Science of Sintering, 2015)

TY  - JOUR
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Peleš, Adriana
AU  - Filipović, Suzana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/767
AB  - Due to its characteristics, cordierite, 2MgO·2Al2O3·5SiO2, is a high-temperature ceramic material of a great scientific interest. Mechanical activation of the starting mixtures containing 5.00 mass% TiO2 was performed in a high-energy ball mill for 10 minutes. The compaction pressure varied from 0.5 to 6tcm-2 (49-588 MPa). The sintering process was performed at 1350ºC for four hours in the air atmosphere. The phase composition of the activated and sintered samples was analyzed using X-ray diffraction. Scanning electron microscopy was used to analyze the microstructure of both compacted and sintered samples. The authors have investigated the influence of compaction pressure on the sintered samples and their electrical properties.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics
SP  - 15
EP  - 22
VL  - 47
IS  - 1
DO  - 10.2298/SOS1501015O
ER  - 
@article{
author = "Obradović, Nina and Đorđević, Nataša and Peleš, Adriana and Filipović, Suzana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/767",
abstract = "Due to its characteristics, cordierite, 2MgO·2Al2O3·5SiO2, is a high-temperature ceramic material of a great scientific interest. Mechanical activation of the starting mixtures containing 5.00 mass% TiO2 was performed in a high-energy ball mill for 10 minutes. The compaction pressure varied from 0.5 to 6tcm-2 (49-588 MPa). The sintering process was performed at 1350ºC for four hours in the air atmosphere. The phase composition of the activated and sintered samples was analyzed using X-ray diffraction. Scanning electron microscopy was used to analyze the microstructure of both compacted and sintered samples. The authors have investigated the influence of compaction pressure on the sintered samples and their electrical properties.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "The influence of compaction pressure on the density and electrical properties of cordierite-based ceramics",
pages = "15-22",
volume = "47",
number = "1",
doi = "10.2298/SOS1501015O"
}
3
7
6

Analysis of the low-frequency noise spectrum in graphene-based biochemical sensors and its application in analyte recognition and quantification

Peleš, Adriana; Đurić, Zoran G.; Jokić, Ivana

(Belgrade : Institute of Technical Sciences of SASA, 2015)

TY  - CONF
AU  - Peleš, Adriana
AU  - Đurić, Zoran G.
AU  - Jokić, Ivana
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/839
AB  - In this study, we use the theoretical model of low-frequency noise in an adsorption-based sensor to analyze the possibility for the recognition and quantification of the analyte based on the measured fluctuations spectrum. We have developed an analytical expression for the spectral density of the fluctuations of the number of analyte particles adsorbed onto the sensing surface which takes into account the processes of mass transfer through the sensor reaction chamber, adsorption and desorption, and surface diffusion of adsorbed particles [1,2]. The numerical calculations performed using the derived theory are in agreement with the experimental data from the literature obtained for graphene-based gas sensors [3,4]. While analyzing the dependence of specific features in the fluctuation spectra of various parameters, we investigate which type of information about the analyte and its interaction with the graphene surface can be obtained from the experimentally obtained noise spectrum. 

References:
1. Djurić, Z., Jokić, I., Peleš, A., Microel. Eng. 124, 81-85 (2014).
2. Djurić, Z., Jokić, I., Peleš, A., “Highly sensitive graphene-based chemical and biological sensors with selectivity achievable through low-frequency noise measurement – Theoretical considerations“, in Proceedings - MIEL 2014, 29th Int. Conference on Microelectronics, IEEE, 2014, pp. 153-156.
3. Rumyantsev, S., Liu, G., Shur, M.S., Potyrailo, R.A., and Balandin, A.A., NanoLetters 12, 2294-2295 (2012).
4. Rumyantsev, S., Liu, G., Potyrailo, R.A., Balandin, A.A., and Shur, M.S., IEEE Sensors Journal 13, 2818-2822 (2013).
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1  - Analysis of the low-frequency noise spectrum in graphene-based biochemical sensors and its application in analyte recognition and quantification
SP  - 26
EP  - 26
ER  - 
@conference{
author = "Peleš, Adriana and Đurić, Zoran G. and Jokić, Ivana",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/839",
abstract = "In this study, we use the theoretical model of low-frequency noise in an adsorption-based sensor to analyze the possibility for the recognition and quantification of the analyte based on the measured fluctuations spectrum. We have developed an analytical expression for the spectral density of the fluctuations of the number of analyte particles adsorbed onto the sensing surface which takes into account the processes of mass transfer through the sensor reaction chamber, adsorption and desorption, and surface diffusion of adsorbed particles [1,2]. The numerical calculations performed using the derived theory are in agreement with the experimental data from the literature obtained for graphene-based gas sensors [3,4]. While analyzing the dependence of specific features in the fluctuation spectra of various parameters, we investigate which type of information about the analyte and its interaction with the graphene surface can be obtained from the experimentally obtained noise spectrum. 

References:
1. Djurić, Z., Jokić, I., Peleš, A., Microel. Eng. 124, 81-85 (2014).
2. Djurić, Z., Jokić, I., Peleš, A., “Highly sensitive graphene-based chemical and biological sensors with selectivity achievable through low-frequency noise measurement – Theoretical considerations“, in Proceedings - MIEL 2014, 29th Int. Conference on Microelectronics, IEEE, 2014, pp. 153-156.
3. Rumyantsev, S., Liu, G., Shur, M.S., Potyrailo, R.A., and Balandin, A.A., NanoLetters 12, 2294-2295 (2012).
4. Rumyantsev, S., Liu, G., Potyrailo, R.A., Balandin, A.A., and Shur, M.S., IEEE Sensors Journal 13, 2818-2822 (2013).",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "Analysis of the low-frequency noise spectrum in graphene-based biochemical sensors and its application in analyte recognition and quantification",
pages = "26-26"
}

The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics

Kosanović, Darko; Živojinović, Jelena; Obradović, Nina; Pavlović, Vera P.; Pavlović, Vladimir B.; Peleš, Adriana; Ristić, Momčilo M.

(2014)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Živojinović, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Ristić, Momčilo M.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/543
AB  - Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.
T2  - Ceramics International
T1  - The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics
SP  - 11883
EP  - 11888
VL  - 40
IS  - 8, Part A
DO  - 10.1016/j.ceramint.2014.04.023
ER  - 
@article{
author = "Kosanović, Darko and Živojinović, Jelena and Obradović, Nina and Pavlović, Vera P. and Pavlović, Vladimir B. and Peleš, Adriana and Ristić, Momčilo M.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/543",
abstract = "Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.",
journal = "Ceramics International",
title = "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics",
pages = "11883-11888",
volume = "40",
number = "8, Part A",
doi = "10.1016/j.ceramint.2014.04.023"
}
3
5
5

Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors

Đurić, Zoran G.; Jokić, Ivana; Peleš, Adriana

(Elsevier, 2014)

TY  - JOUR
AU  - Đurić, Zoran G.
AU  - Jokić, Ivana
AU  - Peleš, Adriana
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/4727
AB  - In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.
PB  - Elsevier
T2  - Microelectronic Engineering
T1  - Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors
SP  - 81
EP  - 85
VL  - 124
DO  - 10.1016/j.mee.2014.06.001
ER  - 
@article{
author = "Đurić, Zoran G. and Jokić, Ivana and Peleš, Adriana",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/4727",
abstract = "In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.",
publisher = "Elsevier",
journal = "Microelectronic Engineering",
title = "Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors",
pages = "81-85",
volume = "124",
doi = "10.1016/j.mee.2014.06.001"
}
3
5
6

Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors

Đurić, Zoran G.; Jokić, Ivana; Peleš, Adriana

(Elsevier, 2014)

TY  - JOUR
AU  - Đurić, Zoran G.
AU  - Jokić, Ivana
AU  - Peleš, Adriana
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/541
AB  - In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.
PB  - Elsevier
T2  - Microelectronic Engineering
T1  - Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors
SP  - 81
EP  - 85
VL  - 124
DO  - 10.1016/j.mee.2014.06.001
ER  - 
@article{
author = "Đurić, Zoran G. and Jokić, Ivana and Peleš, Adriana",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/541",
abstract = "In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.",
publisher = "Elsevier",
journal = "Microelectronic Engineering",
title = "Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors",
pages = "81-85",
volume = "124",
doi = "10.1016/j.mee.2014.06.001"
}
3
5

The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics

Kosanović, Darko; Živojinović, Jelena; Obradović, Nina; Pavlović, Vera P.; Pavlović, Vladimir B.; Peleš, Adriana; Ristić, Momčilo M.

(Elsevier, 2014)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Živojinović, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Ristić, Momčilo M.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/544
AB  - Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.
PB  - Elsevier
T2  - Ceramics International
T1  - The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics
SP  - 11883
EP  - 11888
IS  - 8, Part A
DO  - 10.1016/j.ceramint.2014.04.023
ER  - 
@article{
author = "Kosanović, Darko and Živojinović, Jelena and Obradović, Nina and Pavlović, Vera P. and Pavlović, Vladimir B. and Peleš, Adriana and Ristić, Momčilo M.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/544",
abstract = "Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics",
pages = "11883-11888",
number = "8, Part A",
doi = "10.1016/j.ceramint.2014.04.023"
}
3
5
5

Mehanohemijska sinteza magnezijum titanata

Filipović, Suzana; Obradović, Nina; Pavlović, Vladimir B.; Peleš, Adriana; Marković, Smilja; Mitrić, Miodrag; Mitrović, Nebojša

(Beograd : Društvo za ETRAN, 2014)

TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Mitrović, Nebojša
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/634
AB  - Conference abstract
PB  - Beograd : Društvo za ETRAN
C3  - Zbornik apstrakata i program 58. konferencije ETRAN-a, Vrnjačka Banja, 2-5. jun 2014.
T1  - Mehanohemijska sinteza magnezijum titanata
SP  - 46
EP  - 46
ER  - 
@conference{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Peleš, Adriana and Marković, Smilja and Mitrić, Miodrag and Mitrović, Nebojša",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/634",
abstract = "Conference abstract",
publisher = "Beograd : Društvo za ETRAN",
journal = "Zbornik apstrakata i program 58. konferencije ETRAN-a, Vrnjačka Banja, 2-5. jun 2014.",
title = "Mehanohemijska sinteza magnezijum titanata",
pages = "46-46"
}

The Morphological Characterization of Mechanically Activated ZnO Powder

Peleš, Adriana; Filipović, Suzana; Obradović, Nina; Krstić, Jugoslav; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2014)

TY  - CONF
AU  - Peleš, Adriana
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Krstić, Jugoslav
AU  - Pavlović, Vladimir B.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/606
AB  - The authors investigated the morphological characteristics of mechanically activated ZnO powder. ZnO powder was mechanically activated for 2, 5, 10 and 30 minutes in a planetary ball mill. Mechanical activation introduces lattice disorder and defects into ZnO hexagonal wurtzite structure. In order to determine specific surface area and pore volume, we performed N2 porosimetry and SEM in order to investigate the microstructure of non-activated and mechanically activated ZnO powders. Using Kubelka-Munk function, UV-Vis spectra showed the reducing in band gap with activation time. ZnO powder activated for 5 minutes has the narrowest band gap.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014
T1  - The Morphological Characterization of Mechanically Activated ZnO Powder
SP  - 92
EP  - 92
ER  - 
@conference{
author = "Peleš, Adriana and Filipović, Suzana and Obradović, Nina and Krstić, Jugoslav and Pavlović, Vladimir B.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/606",
abstract = "The authors investigated the morphological characteristics of mechanically activated ZnO powder. ZnO powder was mechanically activated for 2, 5, 10 and 30 minutes in a planetary ball mill. Mechanical activation introduces lattice disorder and defects into ZnO hexagonal wurtzite structure. In order to determine specific surface area and pore volume, we performed N2 porosimetry and SEM in order to investigate the microstructure of non-activated and mechanically activated ZnO powders. Using Kubelka-Munk function, UV-Vis spectra showed the reducing in band gap with activation time. ZnO powder activated for 5 minutes has the narrowest band gap.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014",
title = "The Morphological Characterization of Mechanically Activated ZnO Powder",
pages = "92-92"
}

Highly sensitive graphene-based chemical and biological sensors with selectivity achievable through low-frequency noise measurement — Theoretical considerations

Đurić, Zoran G.; Jokić, Ivana; Peleš, Adriana

(IEEE, 2014)

TY  - CONF
AU  - Đurić, Zoran G.
AU  - Jokić, Ivana
AU  - Peleš, Adriana
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/647
AB  - We have developed a theory of the low-frequency noise caused by interaction of the analyte with the active area of chemical and biological sensors. The main result is an analytical expression for the spectral density of the fluctuations of the number of particles adsorbed onto the sensing surface, taking into account the processes of mass transfer through the sensor reaction chamber, adsorption and desorption, and surface diffusion of adsorbed particles. The performed numerical calculations show good agreement with the experimental data from the literature, obtained for a graphene-based gas sensor. The derived theory contributes to the theoretical basis necessary for the development of a new method for the recognition and quantification of analytes, based on the measured noise spectrum.
PB  - IEEE
C3  - Proceedings of the International Conference on Microelectronics, ICM (2014 29th International Conference on Microelectronics, MIEL 2014)
T1  - Highly sensitive graphene-based chemical and biological sensors with selectivity achievable through low-frequency noise measurement — Theoretical considerations
SP  - 153
EP  - 156
DO  - 10.1109/MIEL.2014.6842108
ER  - 
@conference{
author = "Đurić, Zoran G. and Jokić, Ivana and Peleš, Adriana",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/647",
abstract = "We have developed a theory of the low-frequency noise caused by interaction of the analyte with the active area of chemical and biological sensors. The main result is an analytical expression for the spectral density of the fluctuations of the number of particles adsorbed onto the sensing surface, taking into account the processes of mass transfer through the sensor reaction chamber, adsorption and desorption, and surface diffusion of adsorbed particles. The performed numerical calculations show good agreement with the experimental data from the literature, obtained for a graphene-based gas sensor. The derived theory contributes to the theoretical basis necessary for the development of a new method for the recognition and quantification of analytes, based on the measured noise spectrum.",
publisher = "IEEE",
journal = "Proceedings of the International Conference on Microelectronics, ICM (2014 29th International Conference on Microelectronics, MIEL 2014)",
title = "Highly sensitive graphene-based chemical and biological sensors with selectivity achievable through low-frequency noise measurement — Theoretical considerations",
pages = "153-156",
doi = "10.1109/MIEL.2014.6842108"
}
1
1

Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics

Peleš, Adriana; Đorđević, Nataša; Obradović, Nina; Tadić, N.; Pavlović, Vladimir B.

(Belgrade : International Institute for the Science of Sintering, 2013)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Đorđević, Nataša
AU  - Obradović, Nina
AU  - Tadić, N.
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/188
AB  - Mechanical activation is a commonly used and relatively fast and inexpensive procedure for sample preparation before the sintering process. Cordierite, a stoichiometric mixture of three different oxides (2MgO⋅2Al2O3⋅5SiO2) is a very attractive, widely used high-temperature ceramic material. The mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2, based on our recent investigation. The sintering process was performed at 1350oC for 2h and 4h in air atmosphere. X-ray diffraction was used to analyze the phase composition of non-activated and 80 min activated samples, sintered for 2 and 4h, respectively. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties. [Projekat Ministarstva nauke Republike Srbije, br. OI 172057]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics
SP  - 157
EP  - 164
VL  - 45
IS  - 2
DO  - 10.2298/SOS1302157P
ER  - 
@article{
author = "Peleš, Adriana and Đorđević, Nataša and Obradović, Nina and Tadić, N. and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/188",
abstract = "Mechanical activation is a commonly used and relatively fast and inexpensive procedure for sample preparation before the sintering process. Cordierite, a stoichiometric mixture of three different oxides (2MgO⋅2Al2O3⋅5SiO2) is a very attractive, widely used high-temperature ceramic material. The mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2, based on our recent investigation. The sintering process was performed at 1350oC for 2h and 4h in air atmosphere. X-ray diffraction was used to analyze the phase composition of non-activated and 80 min activated samples, sintered for 2 and 4h, respectively. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties. [Projekat Ministarstva nauke Republike Srbije, br. OI 172057]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Influence of prolonged sintering time on density and electrical properties of isothermally sintered cordierite-based ceramics",
pages = "157-164",
volume = "45",
number = "2",
doi = "10.2298/SOS1302157P"
}
4
7
5

Fluctuations of the number of adsorbed molecules due to adsorption-desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors

Đurić, Zoran G.; Jokić, Ivana; Peleš, Adriana

(2013)

TY  - CONF
AU  - Đurić, Zoran G.
AU  - Jokić, Ivana
AU  - Peleš, Adriana
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/552
AB  - A comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS bio/chemical sensors is presented for the first time; the model takes into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum is significant and that it also depends on the species of adsorbed molecules.

Poster presented at the 39th International Conference on Micro and Nano Engineering MNE 2013, 16-19 September 2013, London, UK
T1  - Fluctuations of the number of adsorbed molecules due to adsorption-desorption processes coupled with mass transfer and  surface diffusion in bio/chemical MEMS sensors
ER  - 
@conference{
author = "Đurić, Zoran G. and Jokić, Ivana and Peleš, Adriana",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/552",
abstract = "A comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS bio/chemical sensors is presented for the first time; the model takes into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum is significant and that it also depends on the species of adsorbed molecules.

Poster presented at the 39th International Conference on Micro and Nano Engineering MNE 2013, 16-19 September 2013, London, UK",
title = "Fluctuations of the number of adsorbed molecules due to adsorption-desorption processes coupled with mass transfer and  surface diffusion in bio/chemical MEMS sensors"
}

Density of the ZnTiO3 nanopowder as a loose powder and as a compact obtained by different methods

Labus, Nebojša; Krstić, Jugoslav; Peleš, Adriana; Živojinović, Jelena; Nikolić, Maria Vesna

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Labus, Nebojša
AU  - Krstić, Jugoslav
AU  - Peleš, Adriana
AU  - Živojinović, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/411
AB  - Nanopowder density, as well as compact density, is due to powder particle size, different in their values, compared to micron powders. Also, the technique used for density determination induces large mutual value discrepancies. Scanning electron micrographs of as received powder are presented as an illustration of the shape and size of powder particles and agglomerates. The density of the loose powder pretreated differently was determined using mercury porosimetry and He pycnometry. The methods used for determining the apparent density of the compacts were pycnometry with water as the wetting liquid, mercury porosimetry and also a new approach using a combination of mercury pycnometry along with nitrogen adsorption. Bulk densities of compacts were determined by dimension measurement and mercury pycnometry. Conclusions about nanopowder usage as a charge for dry compaction as well as the most appropriate way for the determination of compact and powder densities are shown.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Density of the ZnTiO3 nanopowder as a loose powder and as a compact obtained by different methods
SP  - 18
EP  - 18
ER  - 
@conference{
author = "Labus, Nebojša and Krstić, Jugoslav and Peleš, Adriana and Živojinović, Jelena and Nikolić, Maria Vesna",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/411",
abstract = "Nanopowder density, as well as compact density, is due to powder particle size, different in their values, compared to micron powders. Also, the technique used for density determination induces large mutual value discrepancies. Scanning electron micrographs of as received powder are presented as an illustration of the shape and size of powder particles and agglomerates. The density of the loose powder pretreated differently was determined using mercury porosimetry and He pycnometry. The methods used for determining the apparent density of the compacts were pycnometry with water as the wetting liquid, mercury porosimetry and also a new approach using a combination of mercury pycnometry along with nitrogen adsorption. Bulk densities of compacts were determined by dimension measurement and mercury pycnometry. Conclusions about nanopowder usage as a charge for dry compaction as well as the most appropriate way for the determination of compact and powder densities are shown.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Density of the ZnTiO3 nanopowder as a loose powder and as a compact obtained by different methods",
pages = "18-18"
}

Influence of MoO3 on cordierite ceramics sintering and crystallization

Đorđević, Nataša; Mihajlović, A.; Peleš, Adriana; Obradović, Nina; Pavlović, Vladimir B.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Đorđević, Nataša
AU  - Mihajlović, A.
AU  - Peleš, Adriana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/389
AB  - The influence of MoO3 on the process of cordierite ceramics preparation, 2MgO-2Al2O3-5SiO2 (MAS) was researched by sintering followed binary systems: MgO/MoO3 (sintered at 850 ºC and 1000 ºC), Al2O3/Bi2O3 and SiO2/Bi2O3 (sintered at 850 ºC and 1000 ºC). Composition of these systems was 80 % of oxide and 20 % MoO3. The effects of sintering, the composition and morphology were followed by x-ray diffraction, scanning electron microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3. The following research is planned to investigate the effect of 5 % mass of MoO3 on the electrical properties of cordierite ceramics.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Influence of MoO3 on cordierite ceramics sintering and crystallization
SP  - 103
EP  - 103
ER  - 
@conference{
author = "Đorđević, Nataša and Mihajlović, A. and Peleš, Adriana and Obradović, Nina and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/389",
abstract = "The influence of MoO3 on the process of cordierite ceramics preparation, 2MgO-2Al2O3-5SiO2 (MAS) was researched by sintering followed binary systems: MgO/MoO3 (sintered at 850 ºC and 1000 ºC), Al2O3/Bi2O3 and SiO2/Bi2O3 (sintered at 850 ºC and 1000 ºC). Composition of these systems was 80 % of oxide and 20 % MoO3. The effects of sintering, the composition and morphology were followed by x-ray diffraction, scanning electron microscopy and EDS analysis. It has been found that MoO3, beside liquid phase, forms intermediary unstable compounds with MgO and Al2O3. The following research is planned to investigate the effect of 5 % mass of MoO3 on the electrical properties of cordierite ceramics.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Influence of MoO3 on cordierite ceramics sintering and crystallization",
pages = "103-103"
}

Characterization of mechanically activated ZnO powder

Peleš, Adriana; Pavlović, Vera P.; Obradović, Nina; Živojinović, Jelena; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Peleš, Adriana
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Živojinović, Jelena
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/426
AB  - Materials based on ZnO structure have more frequently application as fillers in polymer ceramics nanocompozites. Performances of these materials depends on fillers morphology, surfaces texture and particles size. According to this, in this paper, the authors investigated the influence of mechanical activation of ZnO powder on crystal and micro structure. Commercially available ZnO powder was activated in a planetary ball mill for 2, 5, 10 and 30 minutes. Characterization of such obtained powders was performed using XRD, SEM and Raman spectroscopy. XRD patterns indicated at lowering of peak intensities along with its broadening wich is realted to partical fragmentation and amorphyzation. Micrographs show irregularly shaped particles at the beginning and with prolonged milling time, particles gained uniformed distibution, while after 30 minutes of activation agglomerates started forming. The results we got by investigation of dynamical structure by Raman spectroscopy are in correlation with the other results of structures analysis. Results presented here enable further optimization of, polymer nanocompozite based on ZnO and PVDF, making process.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Characterization of mechanically activated ZnO powder
SP  - 47
EP  - 47
ER  - 
@conference{
author = "Peleš, Adriana and Pavlović, Vera P. and Obradović, Nina and Živojinović, Jelena and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/426",
abstract = "Materials based on ZnO structure have more frequently application as fillers in polymer ceramics nanocompozites. Performances of these materials depends on fillers morphology, surfaces texture and particles size. According to this, in this paper, the authors investigated the influence of mechanical activation of ZnO powder on crystal and micro structure. Commercially available ZnO powder was activated in a planetary ball mill for 2, 5, 10 and 30 minutes. Characterization of such obtained powders was performed using XRD, SEM and Raman spectroscopy. XRD patterns indicated at lowering of peak intensities along with its broadening wich is realted to partical fragmentation and amorphyzation. Micrographs show irregularly shaped particles at the beginning and with prolonged milling time, particles gained uniformed distibution, while after 30 minutes of activation agglomerates started forming. The results we got by investigation of dynamical structure by Raman spectroscopy are in correlation with the other results of structures analysis. Results presented here enable further optimization of, polymer nanocompozite based on ZnO and PVDF, making process.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Characterization of mechanically activated ZnO powder",
pages = "47-47"
}

The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3

Kosanović, Darko; Živojinović, Jelena; Obradović, Nina; Pavlović, Vera P.; Pavlović, Vladimir B.; Peleš, Adriana; Ristić, Momčilo M.

(2013)

TY  - CONF
AU  - Kosanović, Darko
AU  - Živojinović, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Ristić, Momčilo M.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/151
AB  - Poster presented at the conference Advanced Ceramics and Application II – Serbian Ceramic Society, Belgrade, September 30 – October 1, 2013
T1  - The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3
ER  - 
@conference{
author = "Kosanović, Darko and Živojinović, Jelena and Obradović, Nina and Pavlović, Vera P. and Pavlović, Vladimir B. and Peleš, Adriana and Ristić, Momčilo M.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/151",
abstract = "Poster presented at the conference Advanced Ceramics and Application II – Serbian Ceramic Society, Belgrade, September 30 – October 1, 2013",
title = "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3"
}

Piezoelectric polymer/ceramic nanostructures for mechanical energy harvesting

Pavlović, Vladimir B.; Peleš, Adriana; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Dukić, M.; Vlahović, Branislav

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Dukić, M.
AU  - Vlahović, Branislav
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/428
AB  - Vibration-based mechanical energy is one of the most accessible energy source in the surroundings. Harvesting this type of energy exhibits a great potential for remote/wireless sensing, charging batteries, and powering electronic devices. Piezoelectric and ferroelectric materials, including PZT, BaTiO3, ZnO, polyvinylidene fluoride (PVDF), etc., can be used for converting ambient mechanical energy into electricity. Based on these materials, a variety of micro- or nanoelectromechanical systems can be developed for harvesting energies from random vibrations, mechanical waves, or body movements like walking, running, or typing. Recent investigations on nanocomposites of electroactive ceramics and ferroelectric polymers exploit this approach in order to produce new multifunctional materials for mechanical energy harvesting. Taking into account that mechanical activation is one of the methods for modification of physico-chemical properties of the filler, in this study we investigate the influence of mechanical activation of ZnO particles on structural properties of ZnO/polyvinylidene fluoride nanocomposites. The nanocomposite films were prepared by solution casting method and investigated by X-ray diffraction (XRD) method and Raman spectroscopy, while the microstructure morphology has been analyzed by scanning electron microscope (SEM). Presented results will enable optimization of PVDF processing techniques for the production of new mechanical energy harvesting devices.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Piezoelectric polymer/ceramic nanostructures for mechanical energy harvesting
SP  - 48
EP  - 48
ER  - 
@conference{
author = "Pavlović, Vladimir B. and Peleš, Adriana and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Dukić, M. and Vlahović, Branislav",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/428",
abstract = "Vibration-based mechanical energy is one of the most accessible energy source in the surroundings. Harvesting this type of energy exhibits a great potential for remote/wireless sensing, charging batteries, and powering electronic devices. Piezoelectric and ferroelectric materials, including PZT, BaTiO3, ZnO, polyvinylidene fluoride (PVDF), etc., can be used for converting ambient mechanical energy into electricity. Based on these materials, a variety of micro- or nanoelectromechanical systems can be developed for harvesting energies from random vibrations, mechanical waves, or body movements like walking, running, or typing. Recent investigations on nanocomposites of electroactive ceramics and ferroelectric polymers exploit this approach in order to produce new multifunctional materials for mechanical energy harvesting. Taking into account that mechanical activation is one of the methods for modification of physico-chemical properties of the filler, in this study we investigate the influence of mechanical activation of ZnO particles on structural properties of ZnO/polyvinylidene fluoride nanocomposites. The nanocomposite films were prepared by solution casting method and investigated by X-ray diffraction (XRD) method and Raman spectroscopy, while the microstructure morphology has been analyzed by scanning electron microscope (SEM). Presented results will enable optimization of PVDF processing techniques for the production of new mechanical energy harvesting devices.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Piezoelectric polymer/ceramic nanostructures for mechanical energy harvesting",
pages = "48-48"
}

Density and electrical properties of cordierite based ceramics as function of compaction pressure

Obradović, Nina; Đorđević, Nataša; Labus, Nebojša; Peleš, Adriana; Mitrić, Miodrag; Pavlović, Vladimir B.

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, Nataša
AU  - Labus, Nebojša
AU  - Peleš, Adriana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/416
AB  - Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Density and electrical properties of cordierite based ceramics as function of compaction pressure
SP  - 39
EP  - 39
ER  - 
@conference{
author = "Obradović, Nina and Đorđević, Nataša and Labus, Nebojša and Peleš, Adriana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/416",
abstract = "Mechanical activation is widely used and relatively inexpensive procedure for sintering process sample preparation. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO⋅2Al2O3⋅5SiO2, is a very actual hightemperature ceramic material, due to its characteristics. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6t/cm2 (49 MPa - 588 MPa). Sintering process was performed at 1350oC for 4h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered sample. Non-isothermal sintering up to 1400oC, with a constant heating rate, was investigated by thermal shrinkage change with dilatometer. In this paper we research green bodies and sintered samples compaction pressure influence electrical properties.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Density and electrical properties of cordierite based ceramics as function of compaction pressure",
pages = "39-39"
}

Dilatometric Analysis of Mechanically Activated SrTiO3 Powder

Živojinović, Jelena; Kosanović, Darko; Obradović, Nina; Peleš, Adriana; Labus, Nebojša; Filipović, Suzana; Pavlović, Vladimir B.; Mitrić, Miodrag; Ristić, Momčilo M.

(Belgrade : Serbian Ceramic Society, 2013)

TY  - CONF
AU  - Živojinović, Jelena
AU  - Kosanović, Darko
AU  - Obradović, Nina
AU  - Peleš, Adriana
AU  - Labus, Nebojša
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Mitrić, Miodrag
AU  - Ristić, Momčilo M.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/414
AB  - Strontium-titanate powder was mechanically activated in a planetary ball mill for 0, 5, 10, 30, 60, 90 and 120 minutes. Non-isothermal sintering of non-activated and activated SrTiO3 powder samples in the temperature interval from 50 to 1300 0C with three different heating rates (10, 15 and 20 0C/min) was investigated on a dilatometer. X-ray powder diffraction and scanning electron microscopy (SEM) were used to determine the phase composition, lattice microstrains and microstructure morphology of the samples. XRD results showed the presence of new phases: SrCO3 (strontuim-carbonate) and TiO2 (anatase) after 30 minutes of  mechanical activation.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Dilatometric Analysis of Mechanically Activated SrTiO3 Powder
SP  - 38
EP  - 38
ER  - 
@conference{
author = "Živojinović, Jelena and Kosanović, Darko and Obradović, Nina and Peleš, Adriana and Labus, Nebojša and Filipović, Suzana and Pavlović, Vladimir B. and Mitrić, Miodrag and Ristić, Momčilo M.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/414",
abstract = "Strontium-titanate powder was mechanically activated in a planetary ball mill for 0, 5, 10, 30, 60, 90 and 120 minutes. Non-isothermal sintering of non-activated and activated SrTiO3 powder samples in the temperature interval from 50 to 1300 0C with three different heating rates (10, 15 and 20 0C/min) was investigated on a dilatometer. X-ray powder diffraction and scanning electron microscopy (SEM) were used to determine the phase composition, lattice microstrains and microstructure morphology of the samples. XRD results showed the presence of new phases: SrCO3 (strontuim-carbonate) and TiO2 (anatase) after 30 minutes of  mechanical activation.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Dilatometric Analysis of Mechanically Activated SrTiO3 Powder",
pages = "38-38"
}

The influence of mechanical activation on the structure of ZnO

Peleš, Adriana; Filipović, Suzana; Pavlović, Vera P.; Mitrić, Miodrag; Obradović, Nina; Pavlović, Vladimir B.

(Belgrade : Institute of Technical Sciences of SASA, 2013)

TY  - CONF
AU  - Peleš, Adriana
AU  - Filipović, Suzana
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/433
AB  - In this paper, the authors investigated the influence of mechanicall activation of ZnO powder on crystal and micro structure. Because of its structure, ZnO could be used like filler in polymer ceramics nanocompozites. Performances of these material depend on filler morphology, surfaces, texture and size particle. According to this, ZnO powder was activated in a planetary ball mill for 2, 5, 10 and 30 minutes. Changes in crystal and micro structure were observed by SEM, XRD, Raman spectroscopy and UV-Vis Reflection. SEM micrographs show increase of agglomerates size with prolonged milling time. XRD patterns indicate that the peak intensities getting lower and expand with activation time. UV-Vis reflection shows that there is a clear difference in the spectra with increasing activation time. The results we got by the investigation of dinamical structure by Raman spectroscopy are in corelation with the other results of structures analysis. Results presented here enable further optimisation of the polymer nanocompozite based on ZnO and PVDF making process.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia
T1  - The influence of mechanical activation on the structure of ZnO
SP  - 11
EP  - 11
ER  - 
@conference{
author = "Peleš, Adriana and Filipović, Suzana and Pavlović, Vera P. and Mitrić, Miodrag and Obradović, Nina and Pavlović, Vladimir B.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/433",
abstract = "In this paper, the authors investigated the influence of mechanicall activation of ZnO powder on crystal and micro structure. Because of its structure, ZnO could be used like filler in polymer ceramics nanocompozites. Performances of these material depend on filler morphology, surfaces, texture and size particle. According to this, ZnO powder was activated in a planetary ball mill for 2, 5, 10 and 30 minutes. Changes in crystal and micro structure were observed by SEM, XRD, Raman spectroscopy and UV-Vis Reflection. SEM micrographs show increase of agglomerates size with prolonged milling time. XRD patterns indicate that the peak intensities getting lower and expand with activation time. UV-Vis reflection shows that there is a clear difference in the spectra with increasing activation time. The results we got by the investigation of dinamical structure by Raman spectroscopy are in corelation with the other results of structures analysis. Results presented here enable further optimisation of the polymer nanocompozite based on ZnO and PVDF making process.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia",
title = "The influence of mechanical activation on the structure of ZnO",
pages = "11-11"
}