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Mitić, Vojislav V.

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  • Mitić, Vojislav V. (2)
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Author's Bibliography

Analyses of the surface parameters in polycrystalline diamonds

Veljković, Sandra; Mitić, Vojislav V.; Paunović, Vesna; Lazović, Goran; Mohr, Markus; Fecht, Hans

(Čačak : University of Kragujevac, Faculty of Technical Sciences, 2020)

TY  - JOUR
AU  - Veljković, Sandra
AU  - Mitić, Vojislav V.
AU  - Paunović, Vesna
AU  - Lazović, Goran
AU  - Mohr, Markus
AU  - Fecht, Hans
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/10046
AB  - There is a progressing interests for polycrystalline diamonds and they have been more extensively used recently. This area has been intensively researched due to the outstanding potential of this material, and this necessitated presenting some of the latest application related to engineering in this paper. A better insight of polycrystalline diamonds properties can be achieved by intensively researching the surface structure. Samples of nanocrystalline diamonds grown by the chemical vapor deposition method are analyzed and accordingly, the focus of the research was the surface parameters and their structure. It is observed that waviness and texture are unique for any direction, their values are almost the same for the chosen directions and they vary approximately from -0.2 nm to 0.4 nm. Analyses of the parameters allowed a more detailed insight into the morphology of the surfaces of polycrystalline films.
PB  - Čačak : University of Kragujevac, Faculty of Technical Sciences
T2  - Serbian Journal of Electrical Engineering
T1  - Analyses of the surface parameters in polycrystalline diamonds
SP  - 111
EP  - 129
VL  - 17
IS  - 1
DO  - 10.2298/SJEE2001111V
ER  - 
@article{
author = "Veljković, Sandra and Mitić, Vojislav V. and Paunović, Vesna and Lazović, Goran and Mohr, Markus and Fecht, Hans",
year = "2020",
url = "https://dais.sanu.ac.rs/123456789/10046",
abstract = "There is a progressing interests for polycrystalline diamonds and they have been more extensively used recently. This area has been intensively researched due to the outstanding potential of this material, and this necessitated presenting some of the latest application related to engineering in this paper. A better insight of polycrystalline diamonds properties can be achieved by intensively researching the surface structure. Samples of nanocrystalline diamonds grown by the chemical vapor deposition method are analyzed and accordingly, the focus of the research was the surface parameters and their structure. It is observed that waviness and texture are unique for any direction, their values are almost the same for the chosen directions and they vary approximately from -0.2 nm to 0.4 nm. Analyses of the parameters allowed a more detailed insight into the morphology of the surfaces of polycrystalline films.",
publisher = "Čačak : University of Kragujevac, Faculty of Technical Sciences",
journal = "Serbian Journal of Electrical Engineering",
title = "Analyses of the surface parameters in polycrystalline diamonds",
pages = "111-129",
volume = "17",
number = "1",
doi = "10.2298/SJEE2001111V"
}
Veljković, S., Mitić, V. V., Paunović, V., Lazović, G., Mohr, M.,& Fecht, H. (2020). Analyses of the surface parameters in polycrystalline diamonds.
Serbian Journal of Electrical EngineeringČačak : University of Kragujevac, Faculty of Technical Sciences., 17(1), 111-129. 
https://doi.org/10.2298/SJEE2001111V
Veljković S, Mitić VV, Paunović V, Lazović G, Mohr M, Fecht H. Analyses of the surface parameters in polycrystalline diamonds. Serbian Journal of Electrical Engineering. 2020;17(1):111-129

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
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",
url = "https://dais.sanu.ac.rs/123456789/9539",
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"
}
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.
Materials Chemistry and PhysicsElsevier., 256, 123761. 
https://doi.org/10.1016/j.matchemphys.2020.123761
Radović I, Stajčić A, Radisavljević A, Veljković F, Čebela M, Mitić VV, Radojević V. Solvent effects on structural changes in self-healing epoxy composites. Materials Chemistry and Physics. 2020;256:123761
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