Stajčić, Aleksandar

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orcid::0000-0002-4182-7077
  • Stajčić, Aleksandar (13)

Author's Bibliography

Magnetic materials, Curie-Weiss law and fractal correction

Mitić, Vojislav V.; Serpa, Cristina; Stajčić, Aleksandar; Khamoushi, Kouros; Paunović, Vesna; Aleksić, Sanja; Vlahović, Branislav

(Belgrade : Serbian Ceramic Society, 2021)

TY  - CONF
AU  - Mitić, Vojislav V.
AU  - Serpa, Cristina
AU  - Stajčić, Aleksandar
AU  - Khamoushi, Kouros
AU  - Paunović, Vesna
AU  - Aleksić, Sanja
AU  - Vlahović, Branislav
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11907
AB  - Neodymium zinc titanate (NZT) is a very attractive perovskite due to its magnetic and dielectric properties. Considering the microstructure influence NZT stability and performance, it is of great importance to establish an approach for the analysis and prediction of grain boundary phenomena. The fractal nature analysis has already proved to be valuable for the reconstruction and prediction of ceramics intergranular electrical properties. However, no researches were performed on the fractal analysis applied on magnetic materials. This method could give an insight in magnetic properties change from the bulk to the grain interface level. In this study, fractal analysis was applied for the Curie-Weiss law correction, introducing fractal correction into magnetic materials for the first time. NZT powders used in this research for fractal analysis were obtained after sintering at different temperatures in the range from 1450°C to 1675°C.Connection between the microstructure fractal nature and the resulting magnetic permeability has been established, enabling the application on different magnetic materials in the future. This creates a foundation for new researches that will lead to further miniaturization of satellite and mobile devices.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Magnetic materials, Curie-Weiss law and fractal correction
SP  - 46
EP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_dais_11907
ER  - 
@conference{
author = "Mitić, Vojislav V. and Serpa, Cristina and Stajčić, Aleksandar and Khamoushi, Kouros and Paunović, Vesna and Aleksić, Sanja and Vlahović, Branislav",
year = "2021",
abstract = "Neodymium zinc titanate (NZT) is a very attractive perovskite due to its magnetic and dielectric properties. Considering the microstructure influence NZT stability and performance, it is of great importance to establish an approach for the analysis and prediction of grain boundary phenomena. The fractal nature analysis has already proved to be valuable for the reconstruction and prediction of ceramics intergranular electrical properties. However, no researches were performed on the fractal analysis applied on magnetic materials. This method could give an insight in magnetic properties change from the bulk to the grain interface level. In this study, fractal analysis was applied for the Curie-Weiss law correction, introducing fractal correction into magnetic materials for the first time. NZT powders used in this research for fractal analysis were obtained after sintering at different temperatures in the range from 1450°C to 1675°C.Connection between the microstructure fractal nature and the resulting magnetic permeability has been established, enabling the application on different magnetic materials in the future. This creates a foundation for new researches that will lead to further miniaturization of satellite and mobile devices.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Magnetic materials, Curie-Weiss law and fractal correction",
pages = "46-46",
url = "https://hdl.handle.net/21.15107/rcub_dais_11907"
}
Mitić, V. V., Serpa, C., Stajčić, A., Khamoushi, K., Paunović, V., Aleksić, S.,& Vlahović, B.. (2021). Magnetic materials, Curie-Weiss law and fractal correction. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 46-46.
https://hdl.handle.net/21.15107/rcub_dais_11907
Mitić VV, Serpa C, Stajčić A, Khamoushi K, Paunović V, Aleksić S, Vlahović B. Magnetic materials, Curie-Weiss law and fractal correction. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:46-46.
https://hdl.handle.net/21.15107/rcub_dais_11907 .
Mitić, Vojislav V., Serpa, Cristina, Stajčić, Aleksandar, Khamoushi, Kouros, Paunović, Vesna, Aleksić, Sanja, Vlahović, Branislav, "Magnetic materials, Curie-Weiss law and fractal correction" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):46-46,
https://hdl.handle.net/21.15107/rcub_dais_11907 .

Graph theory applied to microelectronics intergranular relations

Mitić, Vojislav V.; Lazović, Goran; Ranđelović, Branislav; Paunović, Vesna; Radović, Ivana; Stajčić, Aleksandar; Vlahović, Branislav

(Taylor & Francis Group, 2021)

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Ranđelović, Branislav
AU  - Paunović, Vesna
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12090
AB  - The focus of this study is on the control of layers between grains by applying graph theory. We performed modification of BaTiO3 nanoparticles with Y2O3. The results of capacitance change on submicron level are the part of the measured values on the bulk samples. The original idea is to develop the new approach to use graph theory for networking of electronic parameters between the neighboring grains in order to compare the values measured on the sample, and to present them through the edges in graph between corresponding vertices. Capacitance change with DC bias was measured on bulk samples, and the modified nanoparticles showed stability up to 90 V. After using graph theory with the different number of neighboring grains and on different voltages, it has been shown that capacitance change can be successfully calculated on the layers between grains. Original calculations presented as 1D cases were performed, confirming graph application as a tool with which measured bulk results can be downsized to an appropriate intergranular level, opening the new perspectives in the area of miniaturization and micropackaging.
PB  - Taylor & Francis Group
T2  - Ferroelectrics
T1  - Graph theory applied to microelectronics intergranular relations
SP  - 145
EP  - 152
VL  - 570
IS  - 1
DO  - 10.1080/00150193.2020.1839265
UR  - https://hdl.handle.net/21.15107/rcub_dais_12090
ER  - 
@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Ranđelović, Branislav and Paunović, Vesna and Radović, Ivana and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2021",
abstract = "The focus of this study is on the control of layers between grains by applying graph theory. We performed modification of BaTiO3 nanoparticles with Y2O3. The results of capacitance change on submicron level are the part of the measured values on the bulk samples. The original idea is to develop the new approach to use graph theory for networking of electronic parameters between the neighboring grains in order to compare the values measured on the sample, and to present them through the edges in graph between corresponding vertices. Capacitance change with DC bias was measured on bulk samples, and the modified nanoparticles showed stability up to 90 V. After using graph theory with the different number of neighboring grains and on different voltages, it has been shown that capacitance change can be successfully calculated on the layers between grains. Original calculations presented as 1D cases were performed, confirming graph application as a tool with which measured bulk results can be downsized to an appropriate intergranular level, opening the new perspectives in the area of miniaturization and micropackaging.",
publisher = "Taylor & Francis Group",
journal = "Ferroelectrics",
title = "Graph theory applied to microelectronics intergranular relations",
pages = "145-152",
volume = "570",
number = "1",
doi = "10.1080/00150193.2020.1839265",
url = "https://hdl.handle.net/21.15107/rcub_dais_12090"
}
Mitić, V. V., Lazović, G., Ranđelović, B., Paunović, V., Radović, I., Stajčić, A.,& Vlahović, B.. (2021). Graph theory applied to microelectronics intergranular relations. in Ferroelectrics
Taylor & Francis Group., 570(1), 145-152.
https://doi.org/10.1080/00150193.2020.1839265
https://hdl.handle.net/21.15107/rcub_dais_12090
Mitić VV, Lazović G, Ranđelović B, Paunović V, Radović I, Stajčić A, Vlahović B. Graph theory applied to microelectronics intergranular relations. in Ferroelectrics. 2021;570(1):145-152.
doi:10.1080/00150193.2020.1839265
https://hdl.handle.net/21.15107/rcub_dais_12090 .
Mitić, Vojislav V., Lazović, Goran, Ranđelović, Branislav, Paunović, Vesna, Radović, Ivana, Stajčić, Aleksandar, Vlahović, Branislav, "Graph theory applied to microelectronics intergranular relations" in Ferroelectrics, 570, no. 1 (2021):145-152,
https://doi.org/10.1080/00150193.2020.1839265 .,
https://hdl.handle.net/21.15107/rcub_dais_12090 .
15
4
15

The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics

Mitić, Vojislav V.; Ranđelović, Branislav; Ilić, Ivana; Ribar, Srđan; Chun, An-Lu; Stajčić, Aleksandar; Vlahović, Branislav

(World Scientific Publishing Co, 2021)

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Ranđelović, Branislav
AU  - Ilić, Ivana
AU  - Ribar, Srđan
AU  - Chun, An-Lu
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4809
UR  - https://dais.sanu.ac.rs/123456789/11949
AB  - After pioneering attempts for the introduction of graph theory in the field of ceramics and microstructures, where 1D and 2D graphs were used, in this paper we applied 3D graphs for the breakdown voltage calculation in BaTiO3sample with some predefined constraints. We have described the relations between grains in the sample and established a mathematical approach for the calculation of breakdown voltage using experimental results. As a result, we introduced mapping between the property of sample and grain structure, then between the grain structure and mathematical graph, using various crystal structures. The main idea was to apply 3D graph theory for the distribution of electronic parameters between the neighboring grains. With this study, we successfully confirmed the possibilities for applications of graphs as a tool for the determination of properties even at the intergranular level.
PB  - World Scientific Publishing Co
T2  - International Journal of Modern Physics B
T1  - The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics
SP  - 2150103
VL  - 35
IS  - 7
DO  - 10.1142/S0217979221501034
UR  - https://hdl.handle.net/21.15107/rcub_dais_11949
ER  - 
@article{
author = "Mitić, Vojislav V. and Ranđelović, Branislav and Ilić, Ivana and Ribar, Srđan and Chun, An-Lu and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2021",
abstract = "After pioneering attempts for the introduction of graph theory in the field of ceramics and microstructures, where 1D and 2D graphs were used, in this paper we applied 3D graphs for the breakdown voltage calculation in BaTiO3sample with some predefined constraints. We have described the relations between grains in the sample and established a mathematical approach for the calculation of breakdown voltage using experimental results. As a result, we introduced mapping between the property of sample and grain structure, then between the grain structure and mathematical graph, using various crystal structures. The main idea was to apply 3D graph theory for the distribution of electronic parameters between the neighboring grains. With this study, we successfully confirmed the possibilities for applications of graphs as a tool for the determination of properties even at the intergranular level.",
publisher = "World Scientific Publishing Co",
journal = "International Journal of Modern Physics B",
title = "The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics",
pages = "2150103",
volume = "35",
number = "7",
doi = "10.1142/S0217979221501034",
url = "https://hdl.handle.net/21.15107/rcub_dais_11949"
}
Mitić, V. V., Ranđelović, B., Ilić, I., Ribar, S., Chun, A., Stajčić, A.,& Vlahović, B.. (2021). The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics. in International Journal of Modern Physics B
World Scientific Publishing Co., 35(7), 2150103.
https://doi.org/10.1142/S0217979221501034
https://hdl.handle.net/21.15107/rcub_dais_11949
Mitić VV, Ranđelović B, Ilić I, Ribar S, Chun A, Stajčić A, Vlahović B. The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics. in International Journal of Modern Physics B. 2021;35(7):2150103.
doi:10.1142/S0217979221501034
https://hdl.handle.net/21.15107/rcub_dais_11949 .
Mitić, Vojislav V., Ranđelović, Branislav, Ilić, Ivana, Ribar, Srđan, Chun, An-Lu, Stajčić, Aleksandar, Vlahović, Branislav, "The 3D graph approach for breakdown voltage calculation in BaTiO3ceramics" in International Journal of Modern Physics B, 35, no. 7 (2021):2150103,
https://doi.org/10.1142/S0217979221501034 .,
https://hdl.handle.net/21.15107/rcub_dais_11949 .
7
3
7

Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure

Radović, Ivan M.; Stajčić, Aleksandar; Mitić, Vojislav V.; Serpa, C.; Paunović, V.; Ranđelović, Branislav

(Institute of Electrical and Electronics Engineers Inc., 2021)

TY  - CONF
AU  - Radović, Ivan M.
AU  - Stajčić, Aleksandar
AU  - Mitić, Vojislav V.
AU  - Serpa, C.
AU  - Paunović, V.
AU  - Ranđelović, Branislav
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12361
AB  - In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - 32nd IEEE International Conference on Microelectronics, MIEL 2021
T1  - Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure
SP  - 203
EP  - 206
DO  - 10.1109/MIEL52794.2021.9569054
UR  - https://hdl.handle.net/21.15107/rcub_dais_12361
ER  - 
@conference{
author = "Radović, Ivan M. and Stajčić, Aleksandar and Mitić, Vojislav V. and Serpa, C. and Paunović, V. and Ranđelović, Branislav",
year = "2021",
abstract = "In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "32nd IEEE International Conference on Microelectronics, MIEL 2021",
title = "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure",
pages = "203-206",
doi = "10.1109/MIEL52794.2021.9569054",
url = "https://hdl.handle.net/21.15107/rcub_dais_12361"
}
Radović, I. M., Stajčić, A., Mitić, V. V., Serpa, C., Paunović, V.,& Ranđelović, B.. (2021). Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in 32nd IEEE International Conference on Microelectronics, MIEL 2021
Institute of Electrical and Electronics Engineers Inc.., 203-206.
https://doi.org/10.1109/MIEL52794.2021.9569054
https://hdl.handle.net/21.15107/rcub_dais_12361
Radović IM, Stajčić A, Mitić VV, Serpa C, Paunović V, Ranđelović B. Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in 32nd IEEE International Conference on Microelectronics, MIEL 2021. 2021;:203-206.
doi:10.1109/MIEL52794.2021.9569054
https://hdl.handle.net/21.15107/rcub_dais_12361 .
Radović, Ivan M., Stajčić, Aleksandar, Mitić, Vojislav V., Serpa, C., Paunović, V., Ranđelović, Branislav, "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure" in 32nd IEEE International Conference on Microelectronics, MIEL 2021 (2021):203-206,
https://doi.org/10.1109/MIEL52794.2021.9569054 .,
https://hdl.handle.net/21.15107/rcub_dais_12361 .
2
2

Reconstruction of fiber reinforcement in epoxy-based composite

Stajčić, Aleksandar; Mitić, Vojislav V.; Serpa, Cristina; Veljković, Filip; Ranđelović, Branislav; Radović, Ivana

(Belgrade : ETRAN, 2021)

TY  - CONF
AU  - Stajčić, Aleksandar
AU  - Mitić, Vojislav V.
AU  - Serpa, Cristina
AU  - Veljković, Filip
AU  - Ranđelović, Branislav
AU  - Radović, Ivana
PY  - 2021
UR  - https://www.etran.rs/2021/wp-content/uploads/2021/11/Zbornik_Proceedings_2021_web.pdf
UR  - https://dais.sanu.ac.rs/123456789/12284
AB  - Polymer matrix composites (PMCs) are very attractive materials due to a possibility to achieve versatile properties by combining with ceramic or metal reinforcement in different shapes and sizes. As a result, PMCs have found application in nearly every field, from household appliances to aerospace industry. Modern microelectronic devices contain conductive polymers with fillers that enhance their electrical properties. In addition, PMCs are being used as insulators and adhesives, contributing to the long life of electronic devices. Epoxy resins are the most commonly used insulators and adhesives. In order to improve their fracture toughness, glass fibers can be used as an efficient reinforcement. However, with the purpose of designing a composite with good mechanical properties and durability, deep knowledge of microstructure is required. In addition, microstructural analysis can be used to connect shape and size of pores or reinforcement with various physical properties. Fractal nature analysis is a valuable mathematical tool that can be employed for different shapes and forms rendering. In this manner, successful design and prediction of composite’s properties could be obtained. In this research, field emission scanning electron microscopy (FESEM) images were used for fractal analysis of glass fibers, with the aim of reconstructing the shape.
PB  - Belgrade : ETRAN
C3  - Зборник радова ‐ 65. Конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику, Етно село Станишићи, 08‐10.09.2021. године / Proceedings of Papers – 8th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2021, Ethno willage Stanišići, Republic of Srpska, Bosnia and Herzegovina
T1  - Reconstruction of fiber reinforcement in epoxy-based composite
SP  - 409
EP  - 412
UR  - https://hdl.handle.net/21.15107/rcub_dais_12284
ER  - 
@conference{
author = "Stajčić, Aleksandar and Mitić, Vojislav V. and Serpa, Cristina and Veljković, Filip and Ranđelović, Branislav and Radović, Ivana",
year = "2021",
abstract = "Polymer matrix composites (PMCs) are very attractive materials due to a possibility to achieve versatile properties by combining with ceramic or metal reinforcement in different shapes and sizes. As a result, PMCs have found application in nearly every field, from household appliances to aerospace industry. Modern microelectronic devices contain conductive polymers with fillers that enhance their electrical properties. In addition, PMCs are being used as insulators and adhesives, contributing to the long life of electronic devices. Epoxy resins are the most commonly used insulators and adhesives. In order to improve their fracture toughness, glass fibers can be used as an efficient reinforcement. However, with the purpose of designing a composite with good mechanical properties and durability, deep knowledge of microstructure is required. In addition, microstructural analysis can be used to connect shape and size of pores or reinforcement with various physical properties. Fractal nature analysis is a valuable mathematical tool that can be employed for different shapes and forms rendering. In this manner, successful design and prediction of composite’s properties could be obtained. In this research, field emission scanning electron microscopy (FESEM) images were used for fractal analysis of glass fibers, with the aim of reconstructing the shape.",
publisher = "Belgrade : ETRAN",
journal = "Зборник радова ‐ 65. Конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику, Етно село Станишићи, 08‐10.09.2021. године / Proceedings of Papers – 8th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2021, Ethno willage Stanišići, Republic of Srpska, Bosnia and Herzegovina",
title = "Reconstruction of fiber reinforcement in epoxy-based composite",
pages = "409-412",
url = "https://hdl.handle.net/21.15107/rcub_dais_12284"
}
Stajčić, A., Mitić, V. V., Serpa, C., Veljković, F., Ranđelović, B.,& Radović, I.. (2021). Reconstruction of fiber reinforcement in epoxy-based composite. in Зборник радова ‐ 65. Конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику, Етно село Станишићи, 08‐10.09.2021. године / Proceedings of Papers – 8th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2021, Ethno willage Stanišići, Republic of Srpska, Bosnia and Herzegovina
Belgrade : ETRAN., 409-412.
https://hdl.handle.net/21.15107/rcub_dais_12284
Stajčić A, Mitić VV, Serpa C, Veljković F, Ranđelović B, Radović I. Reconstruction of fiber reinforcement in epoxy-based composite. in Зборник радова ‐ 65. Конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику, Етно село Станишићи, 08‐10.09.2021. године / Proceedings of Papers – 8th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2021, Ethno willage Stanišići, Republic of Srpska, Bosnia and Herzegovina. 2021;:409-412.
https://hdl.handle.net/21.15107/rcub_dais_12284 .
Stajčić, Aleksandar, Mitić, Vojislav V., Serpa, Cristina, Veljković, Filip, Ranđelović, Branislav, Radović, Ivana, "Reconstruction of fiber reinforcement in epoxy-based composite" in Зборник радова ‐ 65. Конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику, Етно село Станишићи, 08‐10.09.2021. године / Proceedings of Papers – 8th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2021, Ethno willage Stanišići, Republic of Srpska, Bosnia and Herzegovina (2021):409-412,
https://hdl.handle.net/21.15107/rcub_dais_12284 .

Fractal reconstruction of fiber-reinforced polymer composites

Radović, Ivana; Mitić, Vojislav V.; Stajčić, Aleksandar; Serpa, Cristina; Ribar, Srđan; Ranđelović, Branislav; Vlahović, Branislav

(Belgrade : Serbian Ceramic Society, 2021)

TY  - CONF
AU  - Radović, Ivana
AU  - Mitić, Vojislav V.
AU  - Stajčić, Aleksandar
AU  - Serpa, Cristina
AU  - Ribar, Srđan
AU  - Ranđelović, Branislav
AU  - Vlahović, Branislav
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11906
AB  - Polymers offer the possibility of different reinforcement incorporation due to a broad range of chemical structures. Along with this feature, their light weight and processing ease made them a class of materials that have been applied in construction parts, drug delivery agents or electronic devices. Epoxy-based composites have used as insulators in microelectronic devices due to its chemical resistance, good adhesion properties and endurance. As epoxies have low fracture resistance, they are often reinforced with different kinds of fibers. With thorough knowledge of the structure, physical properties can be predicted and included in the processing of future composites, especially that electronic materials minituarization brought micro- and nanoscale level properties at spotlight. Fractal nature analysis is a mathematical method that has proved to be efficient in grain interface properties applied on perovskite ceramic materials. In our study, fiber shape reconstruction and determination of Hausdorff dimension have been achieved with the application of fractal regression model employed in software Fractal Real Finder opening a new path for the prediction of reinforcement shape and size, all with the aim of processing composite materials with desired properties
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Fractal reconstruction of fiber-reinforced polymer composites
SP  - 49
EP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_dais_11906
ER  - 
@conference{
author = "Radović, Ivana and Mitić, Vojislav V. and Stajčić, Aleksandar and Serpa, Cristina and Ribar, Srđan and Ranđelović, Branislav and Vlahović, Branislav",
year = "2021",
abstract = "Polymers offer the possibility of different reinforcement incorporation due to a broad range of chemical structures. Along with this feature, their light weight and processing ease made them a class of materials that have been applied in construction parts, drug delivery agents or electronic devices. Epoxy-based composites have used as insulators in microelectronic devices due to its chemical resistance, good adhesion properties and endurance. As epoxies have low fracture resistance, they are often reinforced with different kinds of fibers. With thorough knowledge of the structure, physical properties can be predicted and included in the processing of future composites, especially that electronic materials minituarization brought micro- and nanoscale level properties at spotlight. Fractal nature analysis is a mathematical method that has proved to be efficient in grain interface properties applied on perovskite ceramic materials. In our study, fiber shape reconstruction and determination of Hausdorff dimension have been achieved with the application of fractal regression model employed in software Fractal Real Finder opening a new path for the prediction of reinforcement shape and size, all with the aim of processing composite materials with desired properties",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Fractal reconstruction of fiber-reinforced polymer composites",
pages = "49-49",
url = "https://hdl.handle.net/21.15107/rcub_dais_11906"
}
Radović, I., Mitić, V. V., Stajčić, A., Serpa, C., Ribar, S., Ranđelović, B.,& Vlahović, B.. (2021). Fractal reconstruction of fiber-reinforced polymer composites. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 49-49.
https://hdl.handle.net/21.15107/rcub_dais_11906
Radović I, Mitić VV, Stajčić A, Serpa C, Ribar S, Ranđelović B, Vlahović B. Fractal reconstruction of fiber-reinforced polymer composites. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:49-49.
https://hdl.handle.net/21.15107/rcub_dais_11906 .
Radović, Ivana, Mitić, Vojislav V., Stajčić, Aleksandar, Serpa, Cristina, Ribar, Srđan, Ranđelović, Branislav, Vlahović, Branislav, "Fractal reconstruction of fiber-reinforced polymer composites" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):49-49,
https://hdl.handle.net/21.15107/rcub_dais_11906 .

The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination

Mitić, Vojislav V.; Lazović, Goran; Ribar, Srđan; Lu, Chun-An; Radović, Ivana; Stajčić, Aleksandar; Fecht, Hans; Vlahović, Branislav

(Taylor & Francis, 2020)

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Ribar, Srđan
AU  - Lu, Chun-An
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Fecht, Hans
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/9542
AB  - This paper is based on fundamental research to develop the interface structure around the grains and to control the layers between two grains, as a prospective media for high-level electronic parameters integrations. We performed the experiments based on nano-BaTiO3 powders with Y additives. All results on dielectric parameters on submicron level are the part of global values the same measured characteristics at the bulk samples. The original idea is to develop the new computing ways to network electronic parameters in thin layers between the grains on the way to get and to compare the values on the samples. Artificial neural networks are computing tools that map input-output data and could be applied on ceramic electronic parameters. These are developed in the manner signals are processed in biological neural networks. The signals are processed by using elements which represent artificial neurons, which have a simple function to process input signal, as well as adjustable parameter which has an influence to change output signal. The total network output presents the sum of a large number neurons outputs. This important research idea is to connect analysis results and neural networks. There is a great interest to connect all of these microcapacitances by neural network with the goal to compare the results in the standard bulk samples measurements frame and microelectronics parameters. The final result of the study was functional relation definition between consolidation parameters, voltage (U) and relative capacitance change, from the level of the bulk sample down to the grains boundaries.
PB  - Taylor & Francis
T2  - Integrated Ferroelectrics
T1  - The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination
SP  - 135
EP  - 146
VL  - 212
IS  - 1
DO  - 10.1080/10584587.2020.1819042
UR  - https://hdl.handle.net/21.15107/rcub_dais_9542
ER  - 
@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Ribar, Srđan and Lu, Chun-An and Radović, Ivana and Stajčić, Aleksandar and Fecht, Hans and Vlahović, Branislav",
year = "2020",
abstract = "This paper is based on fundamental research to develop the interface structure around the grains and to control the layers between two grains, as a prospective media for high-level electronic parameters integrations. We performed the experiments based on nano-BaTiO3 powders with Y additives. All results on dielectric parameters on submicron level are the part of global values the same measured characteristics at the bulk samples. The original idea is to develop the new computing ways to network electronic parameters in thin layers between the grains on the way to get and to compare the values on the samples. Artificial neural networks are computing tools that map input-output data and could be applied on ceramic electronic parameters. These are developed in the manner signals are processed in biological neural networks. The signals are processed by using elements which represent artificial neurons, which have a simple function to process input signal, as well as adjustable parameter which has an influence to change output signal. The total network output presents the sum of a large number neurons outputs. This important research idea is to connect analysis results and neural networks. There is a great interest to connect all of these microcapacitances by neural network with the goal to compare the results in the standard bulk samples measurements frame and microelectronics parameters. The final result of the study was functional relation definition between consolidation parameters, voltage (U) and relative capacitance change, from the level of the bulk sample down to the grains boundaries.",
publisher = "Taylor & Francis",
journal = "Integrated Ferroelectrics",
title = "The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination",
pages = "135-146",
volume = "212",
number = "1",
doi = "10.1080/10584587.2020.1819042",
url = "https://hdl.handle.net/21.15107/rcub_dais_9542"
}
Mitić, V. V., Lazović, G., Ribar, S., Lu, C., Radović, I., Stajčić, A., Fecht, H.,& Vlahović, B.. (2020). The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination. in Integrated Ferroelectrics
Taylor & Francis., 212(1), 135-146.
https://doi.org/10.1080/10584587.2020.1819042
https://hdl.handle.net/21.15107/rcub_dais_9542
Mitić VV, Lazović G, Ribar S, Lu C, Radović I, Stajčić A, Fecht H, Vlahović B. The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination. in Integrated Ferroelectrics. 2020;212(1):135-146.
doi:10.1080/10584587.2020.1819042
https://hdl.handle.net/21.15107/rcub_dais_9542 .
Mitić, Vojislav V., Lazović, Goran, Ribar, Srđan, Lu, Chun-An, Radović, Ivana, Stajčić, Aleksandar, Fecht, Hans, Vlahović, Branislav, "The Artificial Neural Networks Applied for Microelectronics Intergranular Relations Determination" in Integrated Ferroelectrics, 212, no. 1 (2020):135-146,
https://doi.org/10.1080/10584587.2020.1819042 .,
https://hdl.handle.net/21.15107/rcub_dais_9542 .
11
4
10

The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers

Mitić, Vojislav V.; Lazović, Goran; Lu, Chun-An; Paunović, Vesna; Radović, Ivana; Stajčić, Aleksandar; Vlahović, Branislav

(Basel : MDPI, 2020)

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Lu, Chun-An
AU  - Paunović, Vesna
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/8957
AB  - The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.
PB  - Basel : MDPI
T2  - Applied Sciences (Switzerland)
T1  - The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
SP  - 3485
VL  - 10
IS  - 10
DO  - 10.3390/app10103485
UR  - https://hdl.handle.net/21.15107/rcub_dais_8957
ER  - 
@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Lu, Chun-An and Paunović, Vesna and Radović, Ivana and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2020",
abstract = "The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.",
publisher = "Basel : MDPI",
journal = "Applied Sciences (Switzerland)",
title = "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers",
pages = "3485",
volume = "10",
number = "10",
doi = "10.3390/app10103485",
url = "https://hdl.handle.net/21.15107/rcub_dais_8957"
}
Mitić, V. V., Lazović, G., Lu, C., Paunović, V., Radović, I., Stajčić, A.,& Vlahović, B.. (2020). The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences (Switzerland)
Basel : MDPI., 10(10), 3485.
https://doi.org/10.3390/app10103485
https://hdl.handle.net/21.15107/rcub_dais_8957
Mitić VV, Lazović G, Lu C, Paunović V, Radović I, Stajčić A, Vlahović B. The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences (Switzerland). 2020;10(10):3485.
doi:10.3390/app10103485
https://hdl.handle.net/21.15107/rcub_dais_8957 .
Mitić, Vojislav V., Lazović, Goran, Lu, Chun-An, Paunović, Vesna, Radović, Ivana, Stajčić, Aleksandar, Vlahović, Branislav, "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers" in Applied Sciences (Switzerland), 10, no. 10 (2020):3485,
https://doi.org/10.3390/app10103485 .,
https://hdl.handle.net/21.15107/rcub_dais_8957 .
4
1
4

Ceramics, materials, microelectronics and graph theory new frontiers

Ranđelović, Branislav M.; Mitić, Vojislav V.; Ribar, Srđan; Lu, Chun-An; Radović, Ivana; Stajčić, Aleksandar; Novaković, Igor; Vlahović, Branislav

(World Scientific Pub Co Pte Lt, 2020)

TY  - JOUR
AU  - Ranđelović, Branislav M.
AU  - Mitić, Vojislav V.
AU  - Ribar, Srđan
AU  - Lu, Chun-An
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Novaković, Igor
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/10032
AB  - This research is focused on further developing of application and use of graph theory in order to describe relations between grains and to establish control over layers. We used functionalized BaTiO3 nanoparticles coated with Yttrium-based salt. The capacitance change results on super-microstructure levels are the part of the measured values on the bulk samples. The new idea is graph theory application for determination of electronic parameters distribution at the grain boundary and to compare them with the bulk measured values. We present them with vertices in graph, corresponding with grains, connected with edges. Capacitance change with applied voltage was measured on samples sintered in air and nitrogen, up to 100 V. Using graph theory, it has been shown that capacitance change can be successfully calculated on the layers between grains. Within the idea how to get parameters values at microlevel between the grains and pores, mathematical tool can be developed. Besides previously described 1D case, some original calculations for 2D cases were performed in this study, proving successful graph theory use for the calculation of values at nanolevel, leading to a further minituarization in micropackaging.
PB  - World Scientific Pub Co Pte Lt
T2  - Modern Physics Letters B
T1  - Ceramics, materials, microelectronics and graph theory new frontiers
SP  - 2150159
VL  - 34
DO  - 10.1142/S0217984921501591
UR  - https://hdl.handle.net/21.15107/rcub_dais_10032
ER  - 
@article{
author = "Ranđelović, Branislav M. and Mitić, Vojislav V. and Ribar, Srđan and Lu, Chun-An and Radović, Ivana and Stajčić, Aleksandar and Novaković, Igor and Vlahović, Branislav",
year = "2020",
abstract = "This research is focused on further developing of application and use of graph theory in order to describe relations between grains and to establish control over layers. We used functionalized BaTiO3 nanoparticles coated with Yttrium-based salt. The capacitance change results on super-microstructure levels are the part of the measured values on the bulk samples. The new idea is graph theory application for determination of electronic parameters distribution at the grain boundary and to compare them with the bulk measured values. We present them with vertices in graph, corresponding with grains, connected with edges. Capacitance change with applied voltage was measured on samples sintered in air and nitrogen, up to 100 V. Using graph theory, it has been shown that capacitance change can be successfully calculated on the layers between grains. Within the idea how to get parameters values at microlevel between the grains and pores, mathematical tool can be developed. Besides previously described 1D case, some original calculations for 2D cases were performed in this study, proving successful graph theory use for the calculation of values at nanolevel, leading to a further minituarization in micropackaging.",
publisher = "World Scientific Pub Co Pte Lt",
journal = "Modern Physics Letters B",
title = "Ceramics, materials, microelectronics and graph theory new frontiers",
pages = "2150159",
volume = "34",
doi = "10.1142/S0217984921501591",
url = "https://hdl.handle.net/21.15107/rcub_dais_10032"
}
Ranđelović, B. M., Mitić, V. V., Ribar, S., Lu, C., Radović, I., Stajčić, A., Novaković, I.,& Vlahović, B.. (2020). Ceramics, materials, microelectronics and graph theory new frontiers. in Modern Physics Letters B
World Scientific Pub Co Pte Lt., 34, 2150159.
https://doi.org/10.1142/S0217984921501591
https://hdl.handle.net/21.15107/rcub_dais_10032
Ranđelović BM, Mitić VV, Ribar S, Lu C, Radović I, Stajčić A, Novaković I, Vlahović B. Ceramics, materials, microelectronics and graph theory new frontiers. in Modern Physics Letters B. 2020;34:2150159.
doi:10.1142/S0217984921501591
https://hdl.handle.net/21.15107/rcub_dais_10032 .
Ranđelović, Branislav M., Mitić, Vojislav V., Ribar, Srđan, Lu, Chun-An, Radović, Ivana, Stajčić, Aleksandar, Novaković, Igor, Vlahović, Branislav, "Ceramics, materials, microelectronics and graph theory new frontiers" in Modern Physics Letters B, 34 (2020):2150159,
https://doi.org/10.1142/S0217984921501591 .,
https://hdl.handle.net/21.15107/rcub_dais_10032 .
10
5
11

Ceramics, materials, microelectronics and graph theory new frontiers

Ranđelović, Branislav M.; Mitić, Vojislav V.; Ribar, Srđan; Lu, Chun-An; Radović, Ivana; Stajčić, Aleksandar; Novaković, Igor; Vlahović, Branislav

(World Scientific Pub Co Pte Lt, 2020)

TY  - JOUR
AU  - Ranđelović, Branislav M.
AU  - Mitić, Vojislav V.
AU  - Ribar, Srđan
AU  - Lu, Chun-An
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Novaković, Igor
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/10031
AB  - This research is focused on further developing of application and use of graph theory in order to describe relations between grains and to establish control over layers. We used functionalized BaTiO3 nanoparticles coated with Yttrium-based salt. The capacitance change results on super-microstructure levels are the part of the measured values on the bulk samples. The new idea is graph theory application for determination of electronic parameters distribution at the grain boundary and to compare them with the bulk measured values. We present them with vertices in graph, corresponding with grains, connected with edges. Capacitance change with applied voltage was measured on samples sintered in air and nitrogen, up to 100 V. Using graph theory, it has been shown that capacitance change can be successfully calculated on the layers between grains. Within the idea how to get parameters values at microlevel between the grains and pores, mathematical tool can be developed. Besides previously described 1D case, some original calculations for 2D cases were performed in this study, proving successful graph theory use for the calculation of values at nanolevel, leading to a further minituarization in micropackaging.
PB  - World Scientific Pub Co Pte Lt
T2  - Modern Physics Letters B
T1  - Ceramics, materials, microelectronics and graph theory new frontiers
SP  - 2150159
VL  - 34
DO  - 10.1142/S0217984921501591
UR  - https://hdl.handle.net/21.15107/rcub_dais_10031
ER  - 
@article{
author = "Ranđelović, Branislav M. and Mitić, Vojislav V. and Ribar, Srđan and Lu, Chun-An and Radović, Ivana and Stajčić, Aleksandar and Novaković, Igor and Vlahović, Branislav",
year = "2020",
abstract = "This research is focused on further developing of application and use of graph theory in order to describe relations between grains and to establish control over layers. We used functionalized BaTiO3 nanoparticles coated with Yttrium-based salt. The capacitance change results on super-microstructure levels are the part of the measured values on the bulk samples. The new idea is graph theory application for determination of electronic parameters distribution at the grain boundary and to compare them with the bulk measured values. We present them with vertices in graph, corresponding with grains, connected with edges. Capacitance change with applied voltage was measured on samples sintered in air and nitrogen, up to 100 V. Using graph theory, it has been shown that capacitance change can be successfully calculated on the layers between grains. Within the idea how to get parameters values at microlevel between the grains and pores, mathematical tool can be developed. Besides previously described 1D case, some original calculations for 2D cases were performed in this study, proving successful graph theory use for the calculation of values at nanolevel, leading to a further minituarization in micropackaging.",
publisher = "World Scientific Pub Co Pte Lt",
journal = "Modern Physics Letters B",
title = "Ceramics, materials, microelectronics and graph theory new frontiers",
pages = "2150159",
volume = "34",
doi = "10.1142/S0217984921501591",
url = "https://hdl.handle.net/21.15107/rcub_dais_10031"
}
Ranđelović, B. M., Mitić, V. V., Ribar, S., Lu, C., Radović, I., Stajčić, A., Novaković, I.,& Vlahović, B.. (2020). Ceramics, materials, microelectronics and graph theory new frontiers. in Modern Physics Letters B
World Scientific Pub Co Pte Lt., 34, 2150159.
https://doi.org/10.1142/S0217984921501591
https://hdl.handle.net/21.15107/rcub_dais_10031
Ranđelović BM, Mitić VV, Ribar S, Lu C, Radović I, Stajčić A, Novaković I, Vlahović B. Ceramics, materials, microelectronics and graph theory new frontiers. in Modern Physics Letters B. 2020;34:2150159.
doi:10.1142/S0217984921501591
https://hdl.handle.net/21.15107/rcub_dais_10031 .
Ranđelović, Branislav M., Mitić, Vojislav V., Ribar, Srđan, Lu, Chun-An, Radović, Ivana, Stajčić, Aleksandar, Novaković, Igor, Vlahović, Branislav, "Ceramics, materials, microelectronics and graph theory new frontiers" in Modern Physics Letters B, 34 (2020):2150159,
https://doi.org/10.1142/S0217984921501591 .,
https://hdl.handle.net/21.15107/rcub_dais_10031 .
10
5
11

Solvent effects on structural changes in self-healing epoxy composites

Radović, Ivana; Stajčić, Aleksandar; Radisavljević, Andjela; Veljković, Filip; Čebela, Maria; Mitić, Vojislav V.; Radojević, Vesna

(Elsevier, 2020)

TY  - JOUR
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Radisavljević, Andjela
AU  - Veljković, Filip
AU  - Čebela, Maria
AU  - Mitić, Vojislav V.
AU  - Radojević, Vesna
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/9539
AB  - Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/ healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Solvent effects on structural changes in self-healing epoxy composites
SP  - 123761
VL  - 256
DO  - 10.1016/j.matchemphys.2020.123761
UR  - https://hdl.handle.net/21.15107/rcub_dais_9539
ER  - 
@article{
author = "Radović, Ivana and Stajčić, Aleksandar and Radisavljević, Andjela and Veljković, Filip and Čebela, Maria and Mitić, Vojislav V. and Radojević, Vesna",
year = "2020",
abstract = "Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/ healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Solvent effects on structural changes in self-healing epoxy composites",
pages = "123761",
volume = "256",
doi = "10.1016/j.matchemphys.2020.123761",
url = "https://hdl.handle.net/21.15107/rcub_dais_9539"
}
Radović, I., Stajčić, A., Radisavljević, A., Veljković, F., Čebela, M., Mitić, V. V.,& Radojević, V.. (2020). Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics
Elsevier., 256, 123761.
https://doi.org/10.1016/j.matchemphys.2020.123761
https://hdl.handle.net/21.15107/rcub_dais_9539
Radović I, Stajčić A, Radisavljević A, Veljković F, Čebela M, Mitić VV, Radojević V. Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics. 2020;256:123761.
doi:10.1016/j.matchemphys.2020.123761
https://hdl.handle.net/21.15107/rcub_dais_9539 .
Radović, Ivana, Stajčić, Aleksandar, Radisavljević, Andjela, Veljković, Filip, Čebela, Maria, Mitić, Vojislav V., Radojević, Vesna, "Solvent effects on structural changes in self-healing epoxy composites" in Materials Chemistry and Physics, 256 (2020):123761,
https://doi.org/10.1016/j.matchemphys.2020.123761 .,
https://hdl.handle.net/21.15107/rcub_dais_9539 .
16
2
15

Novel membrane-supported hydrogel for removal of heavy metals

Stajčić, Aleksandar; Nastasović, Aleksandra; Stajić-Trošić, Jasna; Marković, Jelena; Onjia, Antonije; Radovanović, Filip

(Elsevier, 2015)

TY  - JOUR
AU  - Stajčić, Aleksandar
AU  - Nastasović, Aleksandra
AU  - Stajić-Trošić, Jasna
AU  - Marković, Jelena
AU  - Onjia, Antonije
AU  - Radovanović, Filip
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/774
AB  - Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.
PB  - Elsevier
T2  - Journal of Environmental Chemical Engineering
T1  - Novel membrane-supported hydrogel for removal of heavy metals
SP  - 453
EP  - 461
VL  - 3
IS  - 1
DO  - 10.1016/j.jece.2015.01.005
UR  - https://hdl.handle.net/21.15107/rcub_dais_774
ER  - 
@article{
author = "Stajčić, Aleksandar and Nastasović, Aleksandra and Stajić-Trošić, Jasna and Marković, Jelena and Onjia, Antonije and Radovanović, Filip",
year = "2015",
abstract = "Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.",
publisher = "Elsevier",
journal = "Journal of Environmental Chemical Engineering",
title = "Novel membrane-supported hydrogel for removal of heavy metals",
pages = "453-461",
volume = "3",
number = "1",
doi = "10.1016/j.jece.2015.01.005",
url = "https://hdl.handle.net/21.15107/rcub_dais_774"
}
Stajčić, A., Nastasović, A., Stajić-Trošić, J., Marković, J., Onjia, A.,& Radovanović, F.. (2015). Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering
Elsevier., 3(1), 453-461.
https://doi.org/10.1016/j.jece.2015.01.005
https://hdl.handle.net/21.15107/rcub_dais_774
Stajčić A, Nastasović A, Stajić-Trošić J, Marković J, Onjia A, Radovanović F. Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering. 2015;3(1):453-461.
doi:10.1016/j.jece.2015.01.005
https://hdl.handle.net/21.15107/rcub_dais_774 .
Stajčić, Aleksandar, Nastasović, Aleksandra, Stajić-Trošić, Jasna, Marković, Jelena, Onjia, Antonije, Radovanović, Filip, "Novel membrane-supported hydrogel for removal of heavy metals" in Journal of Environmental Chemical Engineering, 3, no. 1 (2015):453-461,
https://doi.org/10.1016/j.jece.2015.01.005 .,
https://hdl.handle.net/21.15107/rcub_dais_774 .
13
14
18

Asymmetric hydrogel membranes for heavy metal adsorption

Stajčić, Aleksandar; Radovanović, Filip; Nastasović, Aleksandra; Stajić-Trošić, Jasna; Marković, Jelena; Onjia, Antonije

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

TY  - CONF
AU  - Stajčić, Aleksandar
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Stajić-Trošić, Jasna
AU  - Marković, Jelena
AU  - Onjia, Antonije
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/800
AB  - Hydrogels containing strong acid groups have been used in the past for the removal of heavy metals. Unfortunately such hydrogels exhibit poor mechanical properties and are generally difficult to handle. In this work we prepared asymmetric membranes incorporatingcross-linked 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) hydrogel by combining photopolymerization and liquid phase inversion. An experimental design measuring water content and ion-exchange capacity of these membranes was used to select the optimal membrane composition for the removal of Pb2+, Ni2+, and Cd2+ ions from aqueous solutions. The results demonstrated fast sorption kinetics and high capacity for the investigated metals.
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  - Asymmetric hydrogel membranes for heavy metal adsorption
SP  - 40
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_dais_800
ER  - 
@conference{
author = "Stajčić, Aleksandar and Radovanović, Filip and Nastasović, Aleksandra and Stajić-Trošić, Jasna and Marković, Jelena and Onjia, Antonije",
year = "2013",
abstract = "Hydrogels containing strong acid groups have been used in the past for the removal of heavy metals. Unfortunately such hydrogels exhibit poor mechanical properties and are generally difficult to handle. In this work we prepared asymmetric membranes incorporatingcross-linked 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) hydrogel by combining photopolymerization and liquid phase inversion. An experimental design measuring water content and ion-exchange capacity of these membranes was used to select the optimal membrane composition for the removal of Pb2+, Ni2+, and Cd2+ ions from aqueous solutions. The results demonstrated fast sorption kinetics and high capacity for the investigated metals.",
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 = "Asymmetric hydrogel membranes for heavy metal adsorption",
pages = "40-40",
url = "https://hdl.handle.net/21.15107/rcub_dais_800"
}
Stajčić, A., Radovanović, F., Nastasović, A., Stajić-Trošić, J., Marković, J.,& Onjia, A.. (2013). Asymmetric hydrogel membranes for heavy metal adsorption. in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 40-40.
https://hdl.handle.net/21.15107/rcub_dais_800
Stajčić A, Radovanović F, Nastasović A, Stajić-Trošić J, Marković J, Onjia A. Asymmetric hydrogel membranes for heavy metal adsorption. in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia. 2013;:40-40.
https://hdl.handle.net/21.15107/rcub_dais_800 .
Stajčić, Aleksandar, Radovanović, Filip, Nastasović, Aleksandra, Stajić-Trošić, Jasna, Marković, Jelena, Onjia, Antonije, "Asymmetric hydrogel membranes for heavy metal adsorption" in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia (2013):40-40,
https://hdl.handle.net/21.15107/rcub_dais_800 .