Functional, Functionalized and Advanced Nanomaterials

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Functional, Functionalized and Advanced Nanomaterials (en)
Функционални, функционализовани и усавршени нано материјали (sr)
Funkcionalni, funkcionalizovani i usavršeni nano materijali (sr_RS)
Authors

Publications

Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques

Jokanović, Vukoman R.; Bundaleski, Nenad; Petrović, Božana; Ferarra, Manuela; Jokanović, Bojan; Živković, Slavoljub; Nasov, Ilija

(2022)

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Bundaleski, Nenad
AU  - Petrović, Božana
AU  - Ferarra, Manuela
AU  - Jokanović, Bojan
AU  - Živković, Slavoljub
AU  - Nasov, Ilija
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10029
AB  - Thin films on the base of titanium oxynitrides and copper doped titanium nitride were obtained by a combination of different PVD techniques on the surface of glass substrate and their physicochemical properties were analyzed in details. Phase composition of the samples was analyzed by XRD and FTIR methods, while microstructure of the samples was analyzed by SEM. XPS was used for depth profiling of the samples, which enabled determination of the oxidative state of titanium and corresponding phases through various film layers from the surface to the substrate. The depth of the various layers and their extinction coefficients and refractory indexes were estimated by spectroscopic ellipsometry.
T2  - Vacuum
T1  - Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques
VL  - 195
SP  - 110708
DO  - 10.1016/j.vacuum.2021.110708
ER  - 
@article{
author = "Jokanović, Vukoman R. and Bundaleski, Nenad and Petrović, Božana and Ferarra, Manuela and Jokanović, Bojan and Živković, Slavoljub and Nasov, Ilija",
year = "2022",
abstract = "Thin films on the base of titanium oxynitrides and copper doped titanium nitride were obtained by a combination of different PVD techniques on the surface of glass substrate and their physicochemical properties were analyzed in details. Phase composition of the samples was analyzed by XRD and FTIR methods, while microstructure of the samples was analyzed by SEM. XPS was used for depth profiling of the samples, which enabled determination of the oxidative state of titanium and corresponding phases through various film layers from the surface to the substrate. The depth of the various layers and their extinction coefficients and refractory indexes were estimated by spectroscopic ellipsometry.",
journal = "Vacuum",
title = "Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques",
volume = "195",
pages = "110708",
doi = "10.1016/j.vacuum.2021.110708"
}
Jokanović, V. R., Bundaleski, N., Petrović, B., Ferarra, M., Jokanović, B., Živković, S.,& Nasov, I.. (2022). Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques. in Vacuum, 195, 110708.
https://doi.org/10.1016/j.vacuum.2021.110708
Jokanović VR, Bundaleski N, Petrović B, Ferarra M, Jokanović B, Živković S, Nasov I. Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques. in Vacuum. 2022;195:110708.
doi:10.1016/j.vacuum.2021.110708 .
Jokanović, Vukoman R., Bundaleski, Nenad, Petrović, Božana, Ferarra, Manuela, Jokanović, Bojan, Živković, Slavoljub, Nasov, Ilija, "Detailed phisyco-chemical characterization of the multilayered thin films based on titanium oxynitride and copper doped titanium nitride obtained by different PVD techniques" in Vacuum, 195 (2022):110708,
https://doi.org/10.1016/j.vacuum.2021.110708 . .
2
2

Inverse problem solving in semiconductor photoacoustics by neural networks

Đorđević, Katarina Lj.; Markushev, Dragan D.; Ćojbašić, Žarko М.; Galović, Slobodanka

(2021)

TY  - JOUR
AU  - Đorđević, Katarina Lj.
AU  - Markushev, Dragan D.
AU  - Ćojbašić, Žarko М.
AU  - Galović, Slobodanka
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9075
AB  - We developed a method of inverse problem solving in semiconductor photoacoustics based on neural networks application. Simple structured neural networks, trained on a large set of data obtained by the well–known theoretical models in the 20 Hz–20 kHz modulation frequency range, are applied to determine thermal diffusivity, coefficient of linear expansion and thickness of n–type silicon samples, using undistorted experimental photoacoustic signals. The efficiency of the neural networks was tested depending on the type of input data, showing the best performances in the case when signal amplitudes and phases are simultaneously presented to the network. Real–time parameter prediction is achieved together with high accuracy and reliability allowing one to perform the full characterization of a sample in the frequency domain.
T2  - Inverse Problems in Science and Engineering
T1  - Inverse problem solving in semiconductor photoacoustics by neural networks
VL  - 29
IS  - 2
SP  - 248
EP  - 262
DO  - 10.1080/17415977.2020.1787405
ER  - 
@article{
author = "Đorđević, Katarina Lj. and Markushev, Dragan D. and Ćojbašić, Žarko М. and Galović, Slobodanka",
year = "2021",
abstract = "We developed a method of inverse problem solving in semiconductor photoacoustics based on neural networks application. Simple structured neural networks, trained on a large set of data obtained by the well–known theoretical models in the 20 Hz–20 kHz modulation frequency range, are applied to determine thermal diffusivity, coefficient of linear expansion and thickness of n–type silicon samples, using undistorted experimental photoacoustic signals. The efficiency of the neural networks was tested depending on the type of input data, showing the best performances in the case when signal amplitudes and phases are simultaneously presented to the network. Real–time parameter prediction is achieved together with high accuracy and reliability allowing one to perform the full characterization of a sample in the frequency domain.",
journal = "Inverse Problems in Science and Engineering",
title = "Inverse problem solving in semiconductor photoacoustics by neural networks",
volume = "29",
number = "2",
pages = "248-262",
doi = "10.1080/17415977.2020.1787405"
}
Đorđević, K. Lj., Markushev, D. D., Ćojbašić, Ž. М.,& Galović, S.. (2021). Inverse problem solving in semiconductor photoacoustics by neural networks. in Inverse Problems in Science and Engineering, 29(2), 248-262.
https://doi.org/10.1080/17415977.2020.1787405
Đorđević KL, Markushev DD, Ćojbašić ŽМ, Galović S. Inverse problem solving in semiconductor photoacoustics by neural networks. in Inverse Problems in Science and Engineering. 2021;29(2):248-262.
doi:10.1080/17415977.2020.1787405 .
Đorđević, Katarina Lj., Markushev, Dragan D., Ćojbašić, Žarko М., Galović, Slobodanka, "Inverse problem solving in semiconductor photoacoustics by neural networks" in Inverse Problems in Science and Engineering, 29, no. 2 (2021):248-262,
https://doi.org/10.1080/17415977.2020.1787405 . .
1
9
1
5

Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise

Đorđević, Кatarina Lj.; Galović, Slobodanka; Jordović-Pavlović, Miroslava I.; Ćojbašić, Žarko М.; Markushev, Dragan D.

(2021)

TY  - JOUR
AU  - Đorđević, Кatarina Lj.
AU  - Galović, Slobodanka
AU  - Jordović-Pavlović, Miroslava I.
AU  - Ćojbašić, Žarko М.
AU  - Markushev, Dragan D.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9581
AB  - This paper provides an overview of the characteristics of different neural networks trained on the same theoretical database of n-type silicon photoacoustic signals. By adding different levels of random Gaussian noise to the training input signals, two important goals were achieved. First, the optimal level of noise was found which significantly shortens the training networks with minimal loss of accuracy of its predictions. Second, the termination criteria of networks training were activated to avoid overtraining, i.e., networks generalization was performed. A networks efficiency analysis was performed on both theoretical and experimental photoacoustic signals, resulting in a selection of one neural network that is optimal to the performance requirements of the real experiment. It is indicated that the application of such trained networks is more reliable on thicker semiconductors, whose thickness is greater than the value of the carrier diffusion length in the investigated sample. © 2020, Springer Nature B.V.
T2  - Silicon
T1  - Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise
VL  - 13
IS  - 9
SP  - 2959
EP  - 2969
DO  - 10.1007/s12633-020-00606-y
ER  - 
@article{
author = "Đorđević, Кatarina Lj. and Galović, Slobodanka and Jordović-Pavlović, Miroslava I. and Ćojbašić, Žarko М. and Markushev, Dragan D.",
year = "2021",
abstract = "This paper provides an overview of the characteristics of different neural networks trained on the same theoretical database of n-type silicon photoacoustic signals. By adding different levels of random Gaussian noise to the training input signals, two important goals were achieved. First, the optimal level of noise was found which significantly shortens the training networks with minimal loss of accuracy of its predictions. Second, the termination criteria of networks training were activated to avoid overtraining, i.e., networks generalization was performed. A networks efficiency analysis was performed on both theoretical and experimental photoacoustic signals, resulting in a selection of one neural network that is optimal to the performance requirements of the real experiment. It is indicated that the application of such trained networks is more reliable on thicker semiconductors, whose thickness is greater than the value of the carrier diffusion length in the investigated sample. © 2020, Springer Nature B.V.",
journal = "Silicon",
title = "Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise",
volume = "13",
number = "9",
pages = "2959-2969",
doi = "10.1007/s12633-020-00606-y"
}
Đorđević, К. Lj., Galović, S., Jordović-Pavlović, M. I., Ćojbašić, Ž. М.,& Markushev, D. D.. (2021). Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise. in Silicon, 13(9), 2959-2969.
https://doi.org/10.1007/s12633-020-00606-y
Đorđević КL, Galović S, Jordović-Pavlović MI, Ćojbašić ŽМ, Markushev DD. Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise. in Silicon. 2021;13(9):2959-2969.
doi:10.1007/s12633-020-00606-y .
Đorđević, Кatarina Lj., Galović, Slobodanka, Jordović-Pavlović, Miroslava I., Ćojbašić, Žarko М., Markushev, Dragan D., "Improvement of Neural Networks Applied to Photoacoustic Signals of Semiconductors with Added Noise" in Silicon, 13, no. 9 (2021):2959-2969,
https://doi.org/10.1007/s12633-020-00606-y . .
1

The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard

Milutinović-Smiljanić, Sanja; Ilić, Dragan; Danilović, Vesna; Antonijević, Đorđe

(2021)

TY  - JOUR
AU  - Milutinović-Smiljanić, Sanja
AU  - Ilić, Dragan
AU  - Danilović, Vesna
AU  - Antonijević, Đorđe
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10030
AB  - Background/Aim. In dentistry, the concept of using inert materials for tissue repair has been replaced by the strategy to find bioactive materials which positively interact with human tissues. The aim of this study was to characterize the physicochemical properties of the commercially available calcium silicate and calcium carbonate-based dental cement, biodentine (Septodont, France). Methods. Material elucidation included the measurements of radiopacity, scanning electron microscopy and x-ray dispersive analyses, wettability, Fourier transform infrared spectroscopy, microindentation, micro- to nanoporosity, setting time, pH and calcium ion release. The cells (mouse bone marrow mesenchymal stem cells – BMSCs) were grown on biodentine surface in order to evaluate its behaviour under biological conditions. Results. The radiopacity of the cement (2.8 mmAl) was below ISO requirement for a root canal filling material. The cement was composed of fine powder with particles similar in size and shape, changing from oval to cubic after having been soaked in a simulated body fluid. Biodentine demonstrated good micromechanical properties and low porosity attributed to microporosity with the average pore size of 92 μm. Wettability (contact angle = 41°), calcium ion release (0.098 μg/cm2) and pH of storage solution (9.07) showed satisfactory characteristics. The BMSCa in intimate contact with cement particles remained viable, indicating biodentine good biocompatibility. Conclusion. Biodentine exhibits good mechanical and physicochemical characteristics, but possesses insufficient radiopacity. © 2021 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.
T2  - Vojnosanitetski pregled
T1  - The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard
VL  - 78
IS  - 9
SP  - 973
EP  - 980
DO  - 10.2298/VSP191212014M
ER  - 
@article{
author = "Milutinović-Smiljanić, Sanja and Ilić, Dragan and Danilović, Vesna and Antonijević, Đorđe",
year = "2021",
abstract = "Background/Aim. In dentistry, the concept of using inert materials for tissue repair has been replaced by the strategy to find bioactive materials which positively interact with human tissues. The aim of this study was to characterize the physicochemical properties of the commercially available calcium silicate and calcium carbonate-based dental cement, biodentine (Septodont, France). Methods. Material elucidation included the measurements of radiopacity, scanning electron microscopy and x-ray dispersive analyses, wettability, Fourier transform infrared spectroscopy, microindentation, micro- to nanoporosity, setting time, pH and calcium ion release. The cells (mouse bone marrow mesenchymal stem cells – BMSCs) were grown on biodentine surface in order to evaluate its behaviour under biological conditions. Results. The radiopacity of the cement (2.8 mmAl) was below ISO requirement for a root canal filling material. The cement was composed of fine powder with particles similar in size and shape, changing from oval to cubic after having been soaked in a simulated body fluid. Biodentine demonstrated good micromechanical properties and low porosity attributed to microporosity with the average pore size of 92 μm. Wettability (contact angle = 41°), calcium ion release (0.098 μg/cm2) and pH of storage solution (9.07) showed satisfactory characteristics. The BMSCa in intimate contact with cement particles remained viable, indicating biodentine good biocompatibility. Conclusion. Biodentine exhibits good mechanical and physicochemical characteristics, but possesses insufficient radiopacity. © 2021 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.",
journal = "Vojnosanitetski pregled",
title = "The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard",
volume = "78",
number = "9",
pages = "973-980",
doi = "10.2298/VSP191212014M"
}
Milutinović-Smiljanić, S., Ilić, D., Danilović, V.,& Antonijević, Đ.. (2021). The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard. in Vojnosanitetski pregled, 78(9), 973-980.
https://doi.org/10.2298/VSP191212014M
Milutinović-Smiljanić S, Ilić D, Danilović V, Antonijević Đ. The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard. in Vojnosanitetski pregled. 2021;78(9):973-980.
doi:10.2298/VSP191212014M .
Milutinović-Smiljanić, Sanja, Ilić, Dragan, Danilović, Vesna, Antonijević, Đorđe, "The advantages and disadvantages of biodentine: satisfactory mechanical properties and radiopacity not meeting ISO standard" in Vojnosanitetski pregled, 78, no. 9 (2021):973-980,
https://doi.org/10.2298/VSP191212014M . .
1
1

Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects

Paraš, Smiljana; Trišić, Dijana; Mitrović-Ajtić, Olivera; Antonijević, Đorđe; Čolović, Božana M.; Drobne, Damjana; Jokanović, Vukoman R.

(2021)

TY  - JOUR
AU  - Paraš, Smiljana
AU  - Trišić, Dijana
AU  - Mitrović-Ajtić, Olivera
AU  - Antonijević, Đorđe
AU  - Čolović, Božana M.
AU  - Drobne, Damjana
AU  - Jokanović, Vukoman R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9821
AB  - The effects of a new material based on hydroxyapatite and calcium silicates, named ALBO-MPCA, were investigated on the liver, kidney and spleen. The material was administrated orally for 120 days in an in vivo model in Wistar rats, and untreated animals served as a control. Hematological and biochemical blood parameters were analyzed. Qualitative histological analysis of tissues, change in mitotic activity of cells, and histological characteristics was conducted, as well as quantitative stereological analysis of parenchymal cells, blood sinusoids, and connective tissues. Additionally, the protein expressions of Ki67 and CD68 markers were evaluated. Histological analysis revealed no pathological changes after the tested period. It showed the preservation of the architecture of blood sinusoids and epithelial cells and the presence of mitosis. Additionally, the significantly increased number of the Ki67 in the presence of ALBO-MPCA confirmed the proliferative effect of the material noticed by stereological analysis, while immunoreactive CD68 positive cells did not differ between groups. The study showed non-toxicity of the tested material based on the effects on the hematological, biochemical, and observed histological parameters; in addition, it showed evidence of its biocompatibility. These results could be the basis for further steps toward the application of tested materials in endodontics.
T2  - International Journal of Molecular Science
T1  - Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects
VL  - 22
IS  - 11
SP  - 5468
DO  - 10.3390/ijms22115468
ER  - 
@article{
author = "Paraš, Smiljana and Trišić, Dijana and Mitrović-Ajtić, Olivera and Antonijević, Đorđe and Čolović, Božana M. and Drobne, Damjana and Jokanović, Vukoman R.",
year = "2021",
abstract = "The effects of a new material based on hydroxyapatite and calcium silicates, named ALBO-MPCA, were investigated on the liver, kidney and spleen. The material was administrated orally for 120 days in an in vivo model in Wistar rats, and untreated animals served as a control. Hematological and biochemical blood parameters were analyzed. Qualitative histological analysis of tissues, change in mitotic activity of cells, and histological characteristics was conducted, as well as quantitative stereological analysis of parenchymal cells, blood sinusoids, and connective tissues. Additionally, the protein expressions of Ki67 and CD68 markers were evaluated. Histological analysis revealed no pathological changes after the tested period. It showed the preservation of the architecture of blood sinusoids and epithelial cells and the presence of mitosis. Additionally, the significantly increased number of the Ki67 in the presence of ALBO-MPCA confirmed the proliferative effect of the material noticed by stereological analysis, while immunoreactive CD68 positive cells did not differ between groups. The study showed non-toxicity of the tested material based on the effects on the hematological, biochemical, and observed histological parameters; in addition, it showed evidence of its biocompatibility. These results could be the basis for further steps toward the application of tested materials in endodontics.",
journal = "International Journal of Molecular Science",
title = "Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects",
volume = "22",
number = "11",
pages = "5468",
doi = "10.3390/ijms22115468"
}
Paraš, S., Trišić, D., Mitrović-Ajtić, O., Antonijević, Đ., Čolović, B. M., Drobne, D.,& Jokanović, V. R.. (2021). Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects. in International Journal of Molecular Science, 22(11), 5468.
https://doi.org/10.3390/ijms22115468
Paraš S, Trišić D, Mitrović-Ajtić O, Antonijević Đ, Čolović BM, Drobne D, Jokanović VR. Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects. in International Journal of Molecular Science. 2021;22(11):5468.
doi:10.3390/ijms22115468 .
Paraš, Smiljana, Trišić, Dijana, Mitrović-Ajtić, Olivera, Antonijević, Đorđe, Čolović, Božana M., Drobne, Damjana, Jokanović, Vukoman R., "Biocompatibility study of a new dental cement based on hydroxyapatite and calcium silicates: Focus on liver, kidney, and spleen tissue effects" in International Journal of Molecular Science, 22, no. 11 (2021):5468,
https://doi.org/10.3390/ijms22115468 . .
1

Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation

Jokanović, Vukoman R.; Bundaleski, Nenad; Čolović, Božana M.; Ferarra, Manuela; Jokanović, Bojan; Nasov, Ilija

(2021)

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Bundaleski, Nenad
AU  - Čolović, Božana M.
AU  - Ferarra, Manuela
AU  - Jokanović, Bojan
AU  - Nasov, Ilija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9891
AB  - Physicochemical properties of thin films on the base of titanium oxides, obtained by a cathodic arc evaporation on the surface of glass substrate are analysed in details. The analysis of these films was made by using XRD, FTIR, SEM, XPS analysis and ellipsometry. On the basis of these analyses, particularly analysis obtained by XPS, the oxidative state Ti and corresponding phases are determined through various film layers from the surface to the substrate. The depth of the various levels and their extinction coefficients and refractory indexes are estimated by ellipsometry.
T2  - Zaštita materijala
T1  - Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation
VL  - 62
IS  - 1
SP  - 41
EP  - 50
DO  - 10.5937/zasmat2101041J
ER  - 
@article{
author = "Jokanović, Vukoman R. and Bundaleski, Nenad and Čolović, Božana M. and Ferarra, Manuela and Jokanović, Bojan and Nasov, Ilija",
year = "2021",
abstract = "Physicochemical properties of thin films on the base of titanium oxides, obtained by a cathodic arc evaporation on the surface of glass substrate are analysed in details. The analysis of these films was made by using XRD, FTIR, SEM, XPS analysis and ellipsometry. On the basis of these analyses, particularly analysis obtained by XPS, the oxidative state Ti and corresponding phases are determined through various film layers from the surface to the substrate. The depth of the various levels and their extinction coefficients and refractory indexes are estimated by ellipsometry.",
journal = "Zaštita materijala",
title = "Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation",
volume = "62",
number = "1",
pages = "41-50",
doi = "10.5937/zasmat2101041J"
}
Jokanović, V. R., Bundaleski, N., Čolović, B. M., Ferarra, M., Jokanović, B.,& Nasov, I.. (2021). Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation. in Zaštita materijala, 62(1), 41-50.
https://doi.org/10.5937/zasmat2101041J
Jokanović VR, Bundaleski N, Čolović BM, Ferarra M, Jokanović B, Nasov I. Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation. in Zaštita materijala. 2021;62(1):41-50.
doi:10.5937/zasmat2101041J .
Jokanović, Vukoman R., Bundaleski, Nenad, Čolović, Božana M., Ferarra, Manuela, Jokanović, Bojan, Nasov, Ilija, "Detailed characterization of the Ti-O based thin films obtained by cathodic arc evaporation" in Zaštita materijala, 62, no. 1 (2021):41-50,
https://doi.org/10.5937/zasmat2101041J . .
1

Another two families of integer-valued polynomials associated with finite trigonometric sums

Cvijović, Đurđe

(2021)

TY  - JOUR
AU  - Cvijović, Đurđe
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10525
AB  - As a sequel to our recent paper, its general approach was here extended to finite alternating trigonometric sums giving rise to polynomials which were systematically examined in full detail as well as in a unified manner using simple arguments. Two new general families of integer-valued polynomials (along with four other families derived from them, also integer-valued, including two already known) were deduced. Also, these polynomials enable closed-form summation of a great deal of general families of finite sums.
T2  - Applicable Analysis and Discrete Mathematics
T1  - Another two families of integer-valued polynomials associated with finite trigonometric sums
VL  - 15
IS  - 1
SP  - 69
EP  - 81
DO  - 10.2298/AADM200915004C
ER  - 
@article{
author = "Cvijović, Đurđe",
year = "2021",
abstract = "As a sequel to our recent paper, its general approach was here extended to finite alternating trigonometric sums giving rise to polynomials which were systematically examined in full detail as well as in a unified manner using simple arguments. Two new general families of integer-valued polynomials (along with four other families derived from them, also integer-valued, including two already known) were deduced. Also, these polynomials enable closed-form summation of a great deal of general families of finite sums.",
journal = "Applicable Analysis and Discrete Mathematics",
title = "Another two families of integer-valued polynomials associated with finite trigonometric sums",
volume = "15",
number = "1",
pages = "69-81",
doi = "10.2298/AADM200915004C"
}
Cvijović, Đ.. (2021). Another two families of integer-valued polynomials associated with finite trigonometric sums. in Applicable Analysis and Discrete Mathematics, 15(1), 69-81.
https://doi.org/10.2298/AADM200915004C
Cvijović Đ. Another two families of integer-valued polynomials associated with finite trigonometric sums. in Applicable Analysis and Discrete Mathematics. 2021;15(1):69-81.
doi:10.2298/AADM200915004C .
Cvijović, Đurđe, "Another two families of integer-valued polynomials associated with finite trigonometric sums" in Applicable Analysis and Discrete Mathematics, 15, no. 1 (2021):69-81,
https://doi.org/10.2298/AADM200915004C . .

Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior

Kisić, Danilo; Nenadović, Miloš; Potočnik, Jelena; Novaković, Mirjana M.; Noga, Pavol; Vaňa, Dušan; Závacká, Anna; Rakočević, Zlatko Lj.

(2020)

TY  - JOUR
AU  - Kisić, Danilo
AU  - Nenadović, Miloš
AU  - Potočnik, Jelena
AU  - Novaković, Mirjana M.
AU  - Noga, Pavol
AU  - Vaňa, Dušan
AU  - Závacká, Anna
AU  - Rakočević, Zlatko Lj.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8587
AB  - Fe/Polyethylene nanocomposite was synthesized by ion beam implantation of 56Fe+ into bulk high-density polyethylene. Nanoscale surface morphology along with magnetic and optical behavior was investigated. The aim of the research was to investigate changes of polyethylene's surface layer morphology with the change of Fe implantation fluence in the high fluence range and to find correlations with the magnetic and optical behavior. Four implantation fluences were applied: 5 × 1016, 1 × 1017, 2 × 1017 and 5 × 1017 cm−2, while the implantation energy was 95 keV. Concentration profiles of implanted Fe were analyzed by Rutherford backscattering spectrometry, showing Fe concentration profile maxima closer to the surface with increasing implantation fluence. Cross-sectional transmission electron microscopy showed the formation of metallic nanoparticles with sizes in a range from below 1 nm up to few tens of nanometers, depending on the fluence, and for the highest implantation fluence, a continuous layer was formed. Magneto-optic Kerr effect magnetometry demonstrates weak ferromagnetic behavior for the 2 higher fluences, and superparamagnetic for the 2 lower fluences. The UV-VIS remission function spectra show the peak in the UV region, which we attribute to iron nanoparticles.
T2  - Vacuum
T1  - Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior
VL  - 171
SP  - 109016
DO  - 10.1016/j.vacuum.2019.109016
ER  - 
@article{
author = "Kisić, Danilo and Nenadović, Miloš and Potočnik, Jelena and Novaković, Mirjana M. and Noga, Pavol and Vaňa, Dušan and Závacká, Anna and Rakočević, Zlatko Lj.",
year = "2020",
abstract = "Fe/Polyethylene nanocomposite was synthesized by ion beam implantation of 56Fe+ into bulk high-density polyethylene. Nanoscale surface morphology along with magnetic and optical behavior was investigated. The aim of the research was to investigate changes of polyethylene's surface layer morphology with the change of Fe implantation fluence in the high fluence range and to find correlations with the magnetic and optical behavior. Four implantation fluences were applied: 5 × 1016, 1 × 1017, 2 × 1017 and 5 × 1017 cm−2, while the implantation energy was 95 keV. Concentration profiles of implanted Fe were analyzed by Rutherford backscattering spectrometry, showing Fe concentration profile maxima closer to the surface with increasing implantation fluence. Cross-sectional transmission electron microscopy showed the formation of metallic nanoparticles with sizes in a range from below 1 nm up to few tens of nanometers, depending on the fluence, and for the highest implantation fluence, a continuous layer was formed. Magneto-optic Kerr effect magnetometry demonstrates weak ferromagnetic behavior for the 2 higher fluences, and superparamagnetic for the 2 lower fluences. The UV-VIS remission function spectra show the peak in the UV region, which we attribute to iron nanoparticles.",
journal = "Vacuum",
title = "Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior",
volume = "171",
pages = "109016",
doi = "10.1016/j.vacuum.2019.109016"
}
Kisić, D., Nenadović, M., Potočnik, J., Novaković, M. M., Noga, P., Vaňa, D., Závacká, A.,& Rakočević, Z. Lj.. (2020). Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior. in Vacuum, 171, 109016.
https://doi.org/10.1016/j.vacuum.2019.109016
Kisić D, Nenadović M, Potočnik J, Novaković MM, Noga P, Vaňa D, Závacká A, Rakočević ZL. Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior. in Vacuum. 2020;171:109016.
doi:10.1016/j.vacuum.2019.109016 .
Kisić, Danilo, Nenadović, Miloš, Potočnik, Jelena, Novaković, Mirjana M., Noga, Pavol, Vaňa, Dušan, Závacká, Anna, Rakočević, Zlatko Lj., "Surface layer morphology of the high fluence Fe implanted polyethylene - Correlation with the magnetic and optical behavior" in Vacuum, 171 (2020):109016,
https://doi.org/10.1016/j.vacuum.2019.109016 . .
3
3
3

Modification of polyethylene’s surface properties by high fluence Fe implantation

Kisić, Danilo; Nenadović, Miloš; Barudžija, Tanja; Noga, Pavol; Vaňa, Dušan; Muška, Martin; Rakočević, Zlatko Lj.

(2020)

TY  - JOUR
AU  - Kisić, Danilo
AU  - Nenadović, Miloš
AU  - Barudžija, Tanja
AU  - Noga, Pavol
AU  - Vaňa, Dušan
AU  - Muška, Martin
AU  - Rakočević, Zlatko Lj.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8646
AB  - In the presented paper, changes of high-density polyethylene's (HDPE) surface properties along with the changes of chemical composition, as a consequence of Fe ion implantation with different fluences, were investigated. Applied implantation fluences were as follows: 5 × 1016, 1 × 1017, 2 × 1017 and 5 × 1017 ions cm−2, while the implantation energy was 95 keV. The samples were analyzed by X-ray photoelectron spectroscopy (XPS), Atomic Force Microscopy (AFM), Four point contact probe, Fourier transform infrared spectroscopy (FTIR) and contact angle measurements. Significant changes in the chemical composition were found by XPS and FTIR, which were followed by changes in surface morphology, increase of roughness, and decrease of sheet resistance that has a percolation threshold that starts for the fluence of 1 × 1017 ions cm−2. Surface free energy increases as a consequence of implantation, up to the fluence of 1 × 1017 ions cm−2, and then decreases for the 2 higher fluences. © 2019 Elsevier B.V.
T2  - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
T1  - Modification of polyethylene’s surface properties by high fluence Fe implantation
VL  - 462
SP  - 143
EP  - 153
DO  - 10.1016/j.nimb.2019.11.022
ER  - 
@article{
author = "Kisić, Danilo and Nenadović, Miloš and Barudžija, Tanja and Noga, Pavol and Vaňa, Dušan and Muška, Martin and Rakočević, Zlatko Lj.",
year = "2020",
abstract = "In the presented paper, changes of high-density polyethylene's (HDPE) surface properties along with the changes of chemical composition, as a consequence of Fe ion implantation with different fluences, were investigated. Applied implantation fluences were as follows: 5 × 1016, 1 × 1017, 2 × 1017 and 5 × 1017 ions cm−2, while the implantation energy was 95 keV. The samples were analyzed by X-ray photoelectron spectroscopy (XPS), Atomic Force Microscopy (AFM), Four point contact probe, Fourier transform infrared spectroscopy (FTIR) and contact angle measurements. Significant changes in the chemical composition were found by XPS and FTIR, which were followed by changes in surface morphology, increase of roughness, and decrease of sheet resistance that has a percolation threshold that starts for the fluence of 1 × 1017 ions cm−2. Surface free energy increases as a consequence of implantation, up to the fluence of 1 × 1017 ions cm−2, and then decreases for the 2 higher fluences. © 2019 Elsevier B.V.",
journal = "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms",
title = "Modification of polyethylene’s surface properties by high fluence Fe implantation",
volume = "462",
pages = "143-153",
doi = "10.1016/j.nimb.2019.11.022"
}
Kisić, D., Nenadović, M., Barudžija, T., Noga, P., Vaňa, D., Muška, M.,& Rakočević, Z. Lj.. (2020). Modification of polyethylene’s surface properties by high fluence Fe implantation. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 462, 143-153.
https://doi.org/10.1016/j.nimb.2019.11.022
Kisić D, Nenadović M, Barudžija T, Noga P, Vaňa D, Muška M, Rakočević ZL. Modification of polyethylene’s surface properties by high fluence Fe implantation. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2020;462:143-153.
doi:10.1016/j.nimb.2019.11.022 .
Kisić, Danilo, Nenadović, Miloš, Barudžija, Tanja, Noga, Pavol, Vaňa, Dušan, Muška, Martin, Rakočević, Zlatko Lj., "Modification of polyethylene’s surface properties by high fluence Fe implantation" in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 462 (2020):143-153,
https://doi.org/10.1016/j.nimb.2019.11.022 . .
1
2
2

Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks

Đorđević, Katarina Lj.; Markushev, Dragan D.; Ćojbašić, Žarko М.

(2020)

TY  - JOUR
AU  - Đorđević, Katarina Lj.
AU  - Markushev, Dragan D.
AU  - Ćojbašić, Žarko М.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8759
AB  - In this paper, a simple multilayer perceptron neural network with forward signal propagation was designed and used to simultaneously determine the main physical parameters, such as: the thermal diffusivity, thermal expansion coefficient and thickness, from the transmission, frequency-modulated photoacoustic response of the sample. The amplitude and phase responses of the transmission open-cell photoacoustic signals were calculated in n-type silicon plates using a theoretical model and were used to train and test a neural network. The simulation was done in the modulation frequency range from 20 Hz to 20 kHz and using a wide range of expected values of thermal diffusivity and the thermal coefficient of expansion for semiconductor samples as well as their thickness. The advantages and disadvantages of neural networks utilization as an appropriate mathematical tool designated for semiconductor measurement-oriented purposes are analyzed. Network reliability, precision, and the possibility of operation in real time have been verified on an independent set of signals, establishing photoacoustics as a competitive and powerful technique assigned for material characterization. © 2019, Springer Nature B.V.
T2  - Silicon
T1  - Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks
VL  - 12
IS  - 6
SP  - 1289
EP  - 1300
DO  - 10.1007/s12633-019-00213-6
ER  - 
@article{
author = "Đorđević, Katarina Lj. and Markushev, Dragan D. and Ćojbašić, Žarko М.",
year = "2020",
abstract = "In this paper, a simple multilayer perceptron neural network with forward signal propagation was designed and used to simultaneously determine the main physical parameters, such as: the thermal diffusivity, thermal expansion coefficient and thickness, from the transmission, frequency-modulated photoacoustic response of the sample. The amplitude and phase responses of the transmission open-cell photoacoustic signals were calculated in n-type silicon plates using a theoretical model and were used to train and test a neural network. The simulation was done in the modulation frequency range from 20 Hz to 20 kHz and using a wide range of expected values of thermal diffusivity and the thermal coefficient of expansion for semiconductor samples as well as their thickness. The advantages and disadvantages of neural networks utilization as an appropriate mathematical tool designated for semiconductor measurement-oriented purposes are analyzed. Network reliability, precision, and the possibility of operation in real time have been verified on an independent set of signals, establishing photoacoustics as a competitive and powerful technique assigned for material characterization. © 2019, Springer Nature B.V.",
journal = "Silicon",
title = "Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks",
volume = "12",
number = "6",
pages = "1289-1300",
doi = "10.1007/s12633-019-00213-6"
}
Đorđević, K. Lj., Markushev, D. D.,& Ćojbašić, Ž. М.. (2020). Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks. in Silicon, 12(6), 1289-1300.
https://doi.org/10.1007/s12633-019-00213-6
Đorđević KL, Markushev DD, Ćojbašić ŽМ. Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks. in Silicon. 2020;12(6):1289-1300.
doi:10.1007/s12633-019-00213-6 .
Đorđević, Katarina Lj., Markushev, Dragan D., Ćojbašić, Žarko М., "Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks" in Silicon, 12, no. 6 (2020):1289-1300,
https://doi.org/10.1007/s12633-019-00213-6 . .
13
5
11

Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics

Jordović-Pavlović, Miroslava I.; Markushev, Dragan D.; Kupusinac, Aleksandar; Đorđević, Katarina Lj.; Nešić, Mioljub V.; Galović, Slobodanka; Popović, Marica N.

(2020)

TY  - JOUR
AU  - Jordović-Pavlović, Miroslava I.
AU  - Markushev, Dragan D.
AU  - Kupusinac, Aleksandar
AU  - Đorđević, Katarina Lj.
AU  - Nešić, Mioljub V.
AU  - Galović, Slobodanka
AU  - Popović, Marica N.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8912
AB  - In this paper, a methodology for the application of neural networks in phase-match calibration of gas–microphone photoacoustics in frequency domain is developed. A two-layer deep neural network is used to determine, in real-time, reliably and accurately, the phase transfer function of the used microphone, applying the photoacoustic response of aluminum as reference material. This transfer function was used to correct the photoacoustic response of laser-sintered polyamide and to compare it with theoretical predictions. The obtained degree of correlation of the corrected and theoretical signal tells us that our method of phase-match calibration in photoacoustics can be generalized to a photoacoustic response coming from a solid sample made of different materials.
T2  - International Journal of Thermophysics
T1  - Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics
VL  - 41
IS  - 6
SP  - 73
DO  - 10.1007/s10765-020-02650-7
ER  - 
@article{
author = "Jordović-Pavlović, Miroslava I. and Markushev, Dragan D. and Kupusinac, Aleksandar and Đorđević, Katarina Lj. and Nešić, Mioljub V. and Galović, Slobodanka and Popović, Marica N.",
year = "2020",
abstract = "In this paper, a methodology for the application of neural networks in phase-match calibration of gas–microphone photoacoustics in frequency domain is developed. A two-layer deep neural network is used to determine, in real-time, reliably and accurately, the phase transfer function of the used microphone, applying the photoacoustic response of aluminum as reference material. This transfer function was used to correct the photoacoustic response of laser-sintered polyamide and to compare it with theoretical predictions. The obtained degree of correlation of the corrected and theoretical signal tells us that our method of phase-match calibration in photoacoustics can be generalized to a photoacoustic response coming from a solid sample made of different materials.",
journal = "International Journal of Thermophysics",
title = "Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics",
volume = "41",
number = "6",
pages = "73",
doi = "10.1007/s10765-020-02650-7"
}
Jordović-Pavlović, M. I., Markushev, D. D., Kupusinac, A., Đorđević, K. Lj., Nešić, M. V., Galović, S.,& Popović, M. N.. (2020). Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics. in International Journal of Thermophysics, 41(6), 73.
https://doi.org/10.1007/s10765-020-02650-7
Jordović-Pavlović MI, Markushev DD, Kupusinac A, Đorđević KL, Nešić MV, Galović S, Popović MN. Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics. in International Journal of Thermophysics. 2020;41(6):73.
doi:10.1007/s10765-020-02650-7 .
Jordović-Pavlović, Miroslava I., Markushev, Dragan D., Kupusinac, Aleksandar, Đorđević, Katarina Lj., Nešić, Mioljub V., Galović, Slobodanka, Popović, Marica N., "Deep Neural Network Application in the Phase-Match Calibration of Gas–Microphone Photoacoustics" in International Journal of Thermophysics, 41, no. 6 (2020):73,
https://doi.org/10.1007/s10765-020-02650-7 . .
4
1
3

Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure

Đorđević, Katarina Lj.; Galović, Slobodanka; Jordović-Pavlović, Miroslava I.; Nešić, Mioljub V.; Popović, Marica N.; Ćojbašić, Žarko М.; Markushev, Dragan D.

(2020)

TY  - JOUR
AU  - Đorđević, Katarina Lj.
AU  - Galović, Slobodanka
AU  - Jordović-Pavlović, Miroslava I.
AU  - Nešić, Mioljub V.
AU  - Popović, Marica N.
AU  - Ćojbašić, Žarko М.
AU  - Markushev, Dragan D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8972
AB  - This paper introduces the possibility of the determination of optical absorption and reflexivity coefficient of silicon samples using neural networks and reverse-back procedure based on the photoacoustics response in the frequency domain. Differences between neural network predictions and parameters obtained with standard photoacoustic signal correction procedures are used to adjust our experimental set-up due to the instability of the optical excitation source and the state (contamination) of the illuminated surface. It has been shown that the changes of the optical absorption values correspond to the light source wavelength fluctuations, while changes in the reflexivity coefficient, obtained in this way, correspond to the small effect of the ultrathin layer formation of SiO2 due to the natural process of surface oxidation.
T2  - Optical and Quantum Electronics
T1  - Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure
VL  - 52
IS  - 5
SP  - 247
DO  - 10.1007/s11082-020-02373-x
ER  - 
@article{
author = "Đorđević, Katarina Lj. and Galović, Slobodanka and Jordović-Pavlović, Miroslava I. and Nešić, Mioljub V. and Popović, Marica N. and Ćojbašić, Žarko М. and Markushev, Dragan D.",
year = "2020",
abstract = "This paper introduces the possibility of the determination of optical absorption and reflexivity coefficient of silicon samples using neural networks and reverse-back procedure based on the photoacoustics response in the frequency domain. Differences between neural network predictions and parameters obtained with standard photoacoustic signal correction procedures are used to adjust our experimental set-up due to the instability of the optical excitation source and the state (contamination) of the illuminated surface. It has been shown that the changes of the optical absorption values correspond to the light source wavelength fluctuations, while changes in the reflexivity coefficient, obtained in this way, correspond to the small effect of the ultrathin layer formation of SiO2 due to the natural process of surface oxidation.",
journal = "Optical and Quantum Electronics",
title = "Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure",
volume = "52",
number = "5",
pages = "247",
doi = "10.1007/s11082-020-02373-x"
}
Đorđević, K. Lj., Galović, S., Jordović-Pavlović, M. I., Nešić, M. V., Popović, M. N., Ćojbašić, Ž. М.,& Markushev, D. D.. (2020). Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure. in Optical and Quantum Electronics, 52(5), 247.
https://doi.org/10.1007/s11082-020-02373-x
Đorđević KL, Galović S, Jordović-Pavlović MI, Nešić MV, Popović MN, Ćojbašić ŽМ, Markushev DD. Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure. in Optical and Quantum Electronics. 2020;52(5):247.
doi:10.1007/s11082-020-02373-x .
Đorđević, Katarina Lj., Galović, Slobodanka, Jordović-Pavlović, Miroslava I., Nešić, Mioljub V., Popović, Marica N., Ćojbašić, Žarko М., Markushev, Dragan D., "Photoacoustic optical semiconductor characterization based on machine learning and reverse-back procedure" in Optical and Quantum Electronics, 52, no. 5 (2020):247,
https://doi.org/10.1007/s11082-020-02373-x . .
10
2
7

Computationally intelligent description of a photoacoustic detector

Jordović-Pavlović, Miroslava I.; Kupusinac, Aleksandar; Đorđević, Katarina Lj.; Galović, Slobodanka; Markushev, Dragan D.; Nešić, Mioljub V.; Popović, Marica N.

(2020)

TY  - JOUR
AU  - Jordović-Pavlović, Miroslava I.
AU  - Kupusinac, Aleksandar
AU  - Đorđević, Katarina Lj.
AU  - Galović, Slobodanka
AU  - Markushev, Dragan D.
AU  - Nešić, Mioljub V.
AU  - Popović, Marica N.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8982
AB  - In this article, a method for determination of photoacoustic detector transfer function as an accurate representation of microphone frequency response is presented. The method is based on supervised machine learning techniques, classification and regression, performed by two artificial neural networks. The transfer function is obtained by determining the microphone type and characteristic parameters closely related to its filtering properties. This knowledge is crucial within the signal correction procedure. The method is carefully designed in order to maintain requirements of photoacoustic experiment accuracy, reliability and real-time performance. The networks training is performed using large base of theoretical signals simulating frequency response of three types of commercial electret microphones frequently used in photoacoustic measurements extended with possible flat response of the so-called ideal microphone. The method test is performed with simulated and experimental signals assuming the usage of open-cell photoacoustic set-up. Experimental testing leads to the microphone transfer function determination used to correct the experimental signals, targeting the “true” undistorted photoacoustic response which can be further used in material characterization process.
T2  - Optical and Quantum Electronics
T1  - Computationally intelligent description of a photoacoustic detector
VL  - 52
IS  - 5
SP  - 246
DO  - 10.1007/s11082-020-02372-y
ER  - 
@article{
author = "Jordović-Pavlović, Miroslava I. and Kupusinac, Aleksandar and Đorđević, Katarina Lj. and Galović, Slobodanka and Markushev, Dragan D. and Nešić, Mioljub V. and Popović, Marica N.",
year = "2020",
abstract = "In this article, a method for determination of photoacoustic detector transfer function as an accurate representation of microphone frequency response is presented. The method is based on supervised machine learning techniques, classification and regression, performed by two artificial neural networks. The transfer function is obtained by determining the microphone type and characteristic parameters closely related to its filtering properties. This knowledge is crucial within the signal correction procedure. The method is carefully designed in order to maintain requirements of photoacoustic experiment accuracy, reliability and real-time performance. The networks training is performed using large base of theoretical signals simulating frequency response of three types of commercial electret microphones frequently used in photoacoustic measurements extended with possible flat response of the so-called ideal microphone. The method test is performed with simulated and experimental signals assuming the usage of open-cell photoacoustic set-up. Experimental testing leads to the microphone transfer function determination used to correct the experimental signals, targeting the “true” undistorted photoacoustic response which can be further used in material characterization process.",
journal = "Optical and Quantum Electronics",
title = "Computationally intelligent description of a photoacoustic detector",
volume = "52",
number = "5",
pages = "246",
doi = "10.1007/s11082-020-02372-y"
}
Jordović-Pavlović, M. I., Kupusinac, A., Đorđević, K. Lj., Galović, S., Markushev, D. D., Nešić, M. V.,& Popović, M. N.. (2020). Computationally intelligent description of a photoacoustic detector. in Optical and Quantum Electronics, 52(5), 246.
https://doi.org/10.1007/s11082-020-02372-y
Jordović-Pavlović MI, Kupusinac A, Đorđević KL, Galović S, Markushev DD, Nešić MV, Popović MN. Computationally intelligent description of a photoacoustic detector. in Optical and Quantum Electronics. 2020;52(5):246.
doi:10.1007/s11082-020-02372-y .
Jordović-Pavlović, Miroslava I., Kupusinac, Aleksandar, Đorđević, Katarina Lj., Galović, Slobodanka, Markushev, Dragan D., Nešić, Mioljub V., Popović, Marica N., "Computationally intelligent description of a photoacoustic detector" in Optical and Quantum Electronics, 52, no. 5 (2020):246,
https://doi.org/10.1007/s11082-020-02372-y . .
8
1
4

Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6)

Đorđević, Katarina Lj.; Markushev, Dragan D.; Ćojbašić, Žarko М.

(2020)

TY  - JOUR
AU  - Đorđević, Katarina Lj.
AU  - Markushev, Dragan D.
AU  - Ćojbašić, Žarko М.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9667
AB  - The original version of the article unfortunately contained an error. © 2020, Springer Nature B.V.
The author name ‘Кatarina Lj. Djordjevic’ was inadvertently
captured twice. The correct author group is shown above.
T2  - Silicon
T1  - Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6)
VL  - 12
IS  - 6
SP  - 1289
EP  - 1300
DO  - 10.1007/s12633-020-00726-5
ER  - 
@article{
author = "Đorđević, Katarina Lj. and Markushev, Dragan D. and Ćojbašić, Žarko М.",
year = "2020",
abstract = "The original version of the article unfortunately contained an error. © 2020, Springer Nature B.V.
The author name ‘Кatarina Lj. Djordjevic’ was inadvertently
captured twice. The correct author group is shown above.",
journal = "Silicon",
title = "Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6)",
volume = "12",
number = "6",
pages = "1289-1300",
doi = "10.1007/s12633-020-00726-5"
}
Đorđević, K. Lj., Markushev, D. D.,& Ćojbašić, Ž. М.. (2020). Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6). in Silicon, 12(6), 1289-1300.
https://doi.org/10.1007/s12633-020-00726-5
Đorđević KL, Markushev DD, Ćojbašić ŽМ. Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6). in Silicon. 2020;12(6):1289-1300.
doi:10.1007/s12633-020-00726-5 .
Đorđević, Katarina Lj., Markushev, Dragan D., Ćojbašić, Žarko М., "Correction to: Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks (Silicon, (2020), 12, 6, (1289-1300), 10.1007/s12633-019-00213-6)" in Silicon, 12, no. 6 (2020):1289-1300,
https://doi.org/10.1007/s12633-020-00726-5 . .
1

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

Dodevski, Vladimir; Janković, Bojan Ž.; Mirković, Miljana M.; Kragović, Milan M.; Radović, Ivana M.; Veljković, Filip M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Mirković, Miljana M.
AU  - Kragović, Milan M.
AU  - Radović, Ivana M.
AU  - Veljković, Filip M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8922
AB  - Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.
T2  - Thermal Science
T1  - Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
VL  - 24
IS  - 6 (Part A)
SP  - 3807
EP  - 3821
DO  - 10.2298/TSCI190913064D
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Mirković, Miljana M. and Kragović, Milan M. and Radović, Ivana M. and Veljković, Filip M. and Stojmenović, Marija",
year = "2020",
abstract = "Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.",
journal = "Thermal Science",
title = "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application",
volume = "24",
number = "6 (Part A)",
pages = "3807-3821",
doi = "10.2298/TSCI190913064D"
}
Dodevski, V., Janković, B. Ž., Mirković, M. M., Kragović, M. M., Radović, I. M., Veljković, F. M.,& Stojmenović, M.. (2020). Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science, 24(6 (Part A)), 3807-3821.
https://doi.org/10.2298/TSCI190913064D
Dodevski V, Janković BŽ, Mirković MM, Kragović MM, Radović IM, Veljković FM, Stojmenović M. Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science. 2020;24(6 (Part A)):3807-3821.
doi:10.2298/TSCI190913064D .
Dodevski, Vladimir, Janković, Bojan Ž., Mirković, Miljana M., Kragović, Milan M., Radović, Ivana M., Veljković, Filip M., Stojmenović, Marija, "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application" in Thermal Science, 24, no. 6 (Part A) (2020):3807-3821,
https://doi.org/10.2298/TSCI190913064D . .
1
1

Low total electron yield graphene coatings produced by electrophoretic deposition

Aguincha, R.; Bundaleski, Nenad; Bundaleska, N; Novaković, Mirjana M.; Henriques, Julio A. P.; Rakočević, Zlatko Lj.; Tatarova, Elena; Teodoro, Orlando M. N. D.

(2020)

TY  - JOUR
AU  - Aguincha, R.
AU  - Bundaleski, Nenad
AU  - Bundaleska, N
AU  - Novaković, Mirjana M.
AU  - Henriques, Julio A. P.
AU  - Rakočević, Zlatko Lj.
AU  - Tatarova, Elena
AU  - Teodoro, Orlando M. N. D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8616
AB  - Stainless steel and copper technical substrates have been coated by free standing graphene using electrophoretic deposition technique, with the final goal to obtain chemically inert low secondary electron emission surfaces. This class of materials is of utmost interest in future accelerators in order to increase further the flux of accelerated charged particles in the beam. The measured maximum total electron yield of pristine graphene, which has been previously characterized by electron microscopies and X-ray photoelectron spectroscopy, appears to be about 1.0. The deposition parameters have been optimized in order to obtain surfaces with lowest total electron yield, but also composition and morphology close to that of pristine graphene. When applying these optimized deposition parameters graphene coatings on two substrates, i.e. stainless steel and copper, the maximum total electron yield of about 1.04 was obtained. The composition of coatings and the relative amounts of sp2 bonds are slightly worse than those of the pristine graphene, while the surface morphology appears to be the same. Annealing at 150 °C for 64 h in high vacuum, showed that vacuum baking did not affect considerably the electron emission properties of the coatings. © 2019 Elsevier B.V.
T2  - Applied Surface Science
T1  - Low total electron yield graphene coatings produced by electrophoretic deposition
VL  - 504
SP  - 143870
DO  - 10.1016/j.apsusc.2019.143870
ER  - 
@article{
author = "Aguincha, R. and Bundaleski, Nenad and Bundaleska, N and Novaković, Mirjana M. and Henriques, Julio A. P. and Rakočević, Zlatko Lj. and Tatarova, Elena and Teodoro, Orlando M. N. D.",
year = "2020",
abstract = "Stainless steel and copper technical substrates have been coated by free standing graphene using electrophoretic deposition technique, with the final goal to obtain chemically inert low secondary electron emission surfaces. This class of materials is of utmost interest in future accelerators in order to increase further the flux of accelerated charged particles in the beam. The measured maximum total electron yield of pristine graphene, which has been previously characterized by electron microscopies and X-ray photoelectron spectroscopy, appears to be about 1.0. The deposition parameters have been optimized in order to obtain surfaces with lowest total electron yield, but also composition and morphology close to that of pristine graphene. When applying these optimized deposition parameters graphene coatings on two substrates, i.e. stainless steel and copper, the maximum total electron yield of about 1.04 was obtained. The composition of coatings and the relative amounts of sp2 bonds are slightly worse than those of the pristine graphene, while the surface morphology appears to be the same. Annealing at 150 °C for 64 h in high vacuum, showed that vacuum baking did not affect considerably the electron emission properties of the coatings. © 2019 Elsevier B.V.",
journal = "Applied Surface Science",
title = "Low total electron yield graphene coatings produced by electrophoretic deposition",
volume = "504",
pages = "143870",
doi = "10.1016/j.apsusc.2019.143870"
}
Aguincha, R., Bundaleski, N., Bundaleska, N., Novaković, M. M., Henriques, J. A. P., Rakočević, Z. Lj., Tatarova, E.,& Teodoro, O. M. N. D.. (2020). Low total electron yield graphene coatings produced by electrophoretic deposition. in Applied Surface Science, 504, 143870.
https://doi.org/10.1016/j.apsusc.2019.143870
Aguincha R, Bundaleski N, Bundaleska N, Novaković MM, Henriques JAP, Rakočević ZL, Tatarova E, Teodoro OMND. Low total electron yield graphene coatings produced by electrophoretic deposition. in Applied Surface Science. 2020;504:143870.
doi:10.1016/j.apsusc.2019.143870 .
Aguincha, R., Bundaleski, Nenad, Bundaleska, N, Novaković, Mirjana M., Henriques, Julio A. P., Rakočević, Zlatko Lj., Tatarova, Elena, Teodoro, Orlando M. N. D., "Low total electron yield graphene coatings produced by electrophoretic deposition" in Applied Surface Science, 504 (2020):143870,
https://doi.org/10.1016/j.apsusc.2019.143870 . .
10
3
9

Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation

Novaković, Mirjana M.; Popović, Maja; Noga, Pavol; Vaňa, Dušan; Rakočević, Zlatko Lj.

(2020)

TY  - JOUR
AU  - Novaković, Mirjana M.
AU  - Popović, Maja
AU  - Noga, Pavol
AU  - Vaňa, Dušan
AU  - Rakočević, Zlatko Lj.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8929
AB  - Au-Ag alloy nanoparticles were formed into amorphous silicon by sequential ion implantation of Au and Ag. Monocrystalline Si was amorphized at the initial moment of implantation with 1 × 1016 ions/cm2 gold ions, and then different silver fluences were applied in the range of 1 × 1016–1 × 1017 ions/cm2. After implantations the samples were investigated by means of Rutherford backscattering spectrometry and transmission electron microscopy. The nanoparticles were found to be formed at surface and sub-surface regions of the Si substrate, at depths corresponding to the maximum distribution of Au and Ag ions. The particles are crystalline in nature with sizes from 2 nm to 30 nm in diameter, increasing with silver ion fluence. Although the lattice constants of gold and silver are too close to be distinguished by measuring the characteristic interplanar spacings, imaging in scanning transmission mode confirms the formation of Au-Ag bimetallic nanoparticles, presenting a solid-solution alloy of gold and silver.
T2  - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
T1  - Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation
VL  - 471
SP  - 33
EP  - 41
DO  - 10.1016/j.nimb.2020.03.021
ER  - 
@article{
author = "Novaković, Mirjana M. and Popović, Maja and Noga, Pavol and Vaňa, Dušan and Rakočević, Zlatko Lj.",
year = "2020",
abstract = "Au-Ag alloy nanoparticles were formed into amorphous silicon by sequential ion implantation of Au and Ag. Monocrystalline Si was amorphized at the initial moment of implantation with 1 × 1016 ions/cm2 gold ions, and then different silver fluences were applied in the range of 1 × 1016–1 × 1017 ions/cm2. After implantations the samples were investigated by means of Rutherford backscattering spectrometry and transmission electron microscopy. The nanoparticles were found to be formed at surface and sub-surface regions of the Si substrate, at depths corresponding to the maximum distribution of Au and Ag ions. The particles are crystalline in nature with sizes from 2 nm to 30 nm in diameter, increasing with silver ion fluence. Although the lattice constants of gold and silver are too close to be distinguished by measuring the characteristic interplanar spacings, imaging in scanning transmission mode confirms the formation of Au-Ag bimetallic nanoparticles, presenting a solid-solution alloy of gold and silver.",
journal = "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms",
title = "Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation",
volume = "471",
pages = "33-41",
doi = "10.1016/j.nimb.2020.03.021"
}
Novaković, M. M., Popović, M., Noga, P., Vaňa, D.,& Rakočević, Z. Lj.. (2020). Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 471, 33-41.
https://doi.org/10.1016/j.nimb.2020.03.021
Novaković MM, Popović M, Noga P, Vaňa D, Rakočević ZL. Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2020;471:33-41.
doi:10.1016/j.nimb.2020.03.021 .
Novaković, Mirjana M., Popović, Maja, Noga, Pavol, Vaňa, Dušan, Rakočević, Zlatko Lj., "Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation" in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 471 (2020):33-41,
https://doi.org/10.1016/j.nimb.2020.03.021 . .
4
2
3

Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight

Šojić Merkulov, Daniela V.; Lazarević, Marina J.; Đorđević, Aleksandar N.; Náfrádi, Máté; Alapi, Tünde; Putnik, Predrag; Rakočević, Zlatko Lj.; Novaković, Mirjana M.; Miljević, Bojan; Bognár, Szabolcs; Abramović, Biljana F.

(2020)

TY  - JOUR
AU  - Šojić Merkulov, Daniela V.
AU  - Lazarević, Marina J.
AU  - Đorđević, Aleksandar N.
AU  - Náfrádi, Máté
AU  - Alapi, Tünde
AU  - Putnik, Predrag
AU  - Rakočević, Zlatko Lj.
AU  - Novaković, Mirjana M.
AU  - Miljević, Bojan
AU  - Bognár, Szabolcs
AU  - Abramović, Biljana F.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9588
AB  - Nowadays, great focus is given to the contamination of surface and groundwater because of the extensive usage of pesticides in agriculture. The improvements of commercial catalyst TiO2 activity using different Au nanoparticles were investigated for mesotrione photocatalytic degradation under simulated sunlight. The selected system was 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L) that was studied by transmission electron microscopy and ultraviolet-visible (UV-Vis) spectroscopy. It was found that TiO2 particles size was ~20 nm and ~50 nm, respectively. The Au nanoparticles were below 10 nm and were well distributed within the framework of TiO2 . For 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L), band gap energy was 2.45 eV. In comparison to the pure TiO2, addition of Au nanoparticles generally enhanced photocatalytic removal of mesotrione. By examining the degree of mineralization, it was found that 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L) system was the most efficient for the removal of the mesotrione and intermediates. The effect of tert-butanol, NaF and ethylenediaminetetraacetic acid disodium salt on the transformation rate suggested that the relative contribution of various reactive species changed in following order: h+ >•OHads >•OHbulk. Finally, several intermediates that were formed during the photocatalytic treatment of mesotrione were identified. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
T2  - Nanomaterials
T1  - Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight
VL  - 10
IS  - 8
SP  - 1
EP  - 15
DO  - 10.3390/nano10081591
ER  - 
@article{
author = "Šojić Merkulov, Daniela V. and Lazarević, Marina J. and Đorđević, Aleksandar N. and Náfrádi, Máté and Alapi, Tünde and Putnik, Predrag and Rakočević, Zlatko Lj. and Novaković, Mirjana M. and Miljević, Bojan and Bognár, Szabolcs and Abramović, Biljana F.",
year = "2020",
abstract = "Nowadays, great focus is given to the contamination of surface and groundwater because of the extensive usage of pesticides in agriculture. The improvements of commercial catalyst TiO2 activity using different Au nanoparticles were investigated for mesotrione photocatalytic degradation under simulated sunlight. The selected system was 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L) that was studied by transmission electron microscopy and ultraviolet-visible (UV-Vis) spectroscopy. It was found that TiO2 particles size was ~20 nm and ~50 nm, respectively. The Au nanoparticles were below 10 nm and were well distributed within the framework of TiO2 . For 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L), band gap energy was 2.45 eV. In comparison to the pure TiO2, addition of Au nanoparticles generally enhanced photocatalytic removal of mesotrione. By examining the degree of mineralization, it was found that 2.43 × 10−3% Au–S–CH2–CH2–OH/TiO2 (0.5 g/L) system was the most efficient for the removal of the mesotrione and intermediates. The effect of tert-butanol, NaF and ethylenediaminetetraacetic acid disodium salt on the transformation rate suggested that the relative contribution of various reactive species changed in following order: h+ >•OHads >•OHbulk. Finally, several intermediates that were formed during the photocatalytic treatment of mesotrione were identified. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.",
journal = "Nanomaterials",
title = "Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight",
volume = "10",
number = "8",
pages = "1-15",
doi = "10.3390/nano10081591"
}
Šojić Merkulov, D. V., Lazarević, M. J., Đorđević, A. N., Náfrádi, M., Alapi, T., Putnik, P., Rakočević, Z. Lj., Novaković, M. M., Miljević, B., Bognár, S.,& Abramović, B. F.. (2020). Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight. in Nanomaterials, 10(8), 1-15.
https://doi.org/10.3390/nano10081591
Šojić Merkulov DV, Lazarević MJ, Đorđević AN, Náfrádi M, Alapi T, Putnik P, Rakočević ZL, Novaković MM, Miljević B, Bognár S, Abramović BF. Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight. in Nanomaterials. 2020;10(8):1-15.
doi:10.3390/nano10081591 .
Šojić Merkulov, Daniela V., Lazarević, Marina J., Đorđević, Aleksandar N., Náfrádi, Máté, Alapi, Tünde, Putnik, Predrag, Rakočević, Zlatko Lj., Novaković, Mirjana M., Miljević, Bojan, Bognár, Szabolcs, Abramović, Biljana F., "Potential of TiO2 with various au nanoparticles for catalyzing mesotrione removal from wastewaters under sunlight" in Nanomaterials, 10, no. 8 (2020):1-15,
https://doi.org/10.3390/nano10081591 . .
6
3
5

The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain

Jordović-Pavlović, Miroslava I.; Stanković, Milena M.; Popović, Marica N.; Ćojbašić, Žarko М.; Galović, Slobodanka; Markushev, Dragan D.

(2020)

TY  - JOUR
AU  - Jordović-Pavlović, Miroslava I.
AU  - Stanković, Milena M.
AU  - Popović, Marica N.
AU  - Ćojbašić, Žarko М.
AU  - Galović, Slobodanka
AU  - Markushev, Dragan D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9005
AB  - An analysis of the application of neural networks as a reliable, precise, and fast tool in open-cell photoacoustics setups for the recognition of microphone effects in the frequency domain from 10 Hz to 100 × 104 Hz is presented. The network is trained to achieve simultaneous recognition of microphone characteristics, which are the most important parameters leading to the distortion of photoacoustic signals in both amplitude and phase. The training is carried out using a theoretically obtained database of amplitudes and phases as the input and five microphone characteristics as the output, based on transmission measurements obtained using an open photoacoustic cell setup. The results show that the network can precisely and reliably interpolate the output to recognize microphone characteristics including electronic effects in the low and acoustic effects in the high frequency domain. The simulations reveal that the network is not capable of interpolating an input including modulation frequencies. Consequently, in real applications, the network training must be adapted to the experimental frequencies, or vice versa. The total number of frequencies used in the experiment must also be in accordance with the total number of frequencies used in the network training.
T2  - Journal of Computational Electronics
T1  - The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain
VL  - 19
IS  - 3
SP  - 1268
EP  - 1280
DO  - 10.1007/s10825-020-01507-4
ER  - 
@article{
author = "Jordović-Pavlović, Miroslava I. and Stanković, Milena M. and Popović, Marica N. and Ćojbašić, Žarko М. and Galović, Slobodanka and Markushev, Dragan D.",
year = "2020",
abstract = "An analysis of the application of neural networks as a reliable, precise, and fast tool in open-cell photoacoustics setups for the recognition of microphone effects in the frequency domain from 10 Hz to 100 × 104 Hz is presented. The network is trained to achieve simultaneous recognition of microphone characteristics, which are the most important parameters leading to the distortion of photoacoustic signals in both amplitude and phase. The training is carried out using a theoretically obtained database of amplitudes and phases as the input and five microphone characteristics as the output, based on transmission measurements obtained using an open photoacoustic cell setup. The results show that the network can precisely and reliably interpolate the output to recognize microphone characteristics including electronic effects in the low and acoustic effects in the high frequency domain. The simulations reveal that the network is not capable of interpolating an input including modulation frequencies. Consequently, in real applications, the network training must be adapted to the experimental frequencies, or vice versa. The total number of frequencies used in the experiment must also be in accordance with the total number of frequencies used in the network training.",
journal = "Journal of Computational Electronics",
title = "The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain",
volume = "19",
number = "3",
pages = "1268-1280",
doi = "10.1007/s10825-020-01507-4"
}
Jordović-Pavlović, M. I., Stanković, M. M., Popović, M. N., Ćojbašić, Ž. М., Galović, S.,& Markushev, D. D.. (2020). The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain. in Journal of Computational Electronics, 19(3), 1268-1280.
https://doi.org/10.1007/s10825-020-01507-4
Jordović-Pavlović MI, Stanković MM, Popović MN, Ćojbašić ŽМ, Galović S, Markushev DD. The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain. in Journal of Computational Electronics. 2020;19(3):1268-1280.
doi:10.1007/s10825-020-01507-4 .
Jordović-Pavlović, Miroslava I., Stanković, Milena M., Popović, Marica N., Ćojbašić, Žarko М., Galović, Slobodanka, Markushev, Dragan D., "The application of artificial neural networks in solid-state photoacoustics for the recognition of microphone response effects in the frequency domain" in Journal of Computational Electronics, 19, no. 3 (2020):1268-1280,
https://doi.org/10.1007/s10825-020-01507-4 . .
5
2

XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited

Medić-Ilić, Mirjana; Bundaleski, Nenad; Ivanović, Nenad; Teodoro, Orlando M. N. D.; Rakočević, Zlatko Lj.; Minić, Dragica M.; Romčević, Nebojša Ž.; Radisavljević, Ivana

(2020)

TY  - JOUR
AU  - Medić-Ilić, Mirjana
AU  - Bundaleski, Nenad
AU  - Ivanović, Nenad
AU  - Teodoro, Orlando M. N. D.
AU  - Rakočević, Zlatko Lj.
AU  - Minić, Dragica M.
AU  - Romčević, Nebojša Ž.
AU  - Radisavljević, Ivana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8910
AB  - Recently introduced model for quantitative analysis of in-depth non-uniform surfaces is applied to reexamine the X-ray Photoelectron Spectroscopy (XPS) data of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 crystalline samples. Special attention is paid to the precise identification of phases which form the bulk-like near-surface region and the surface overlayers (the oxide layer and the layer of organic impurities), as well as the influence of surface morphology on the measurements. The obtained results fully support earlier qualitative estimations, but also provide new quantitative insight into the composition of the three investigated regions. The near-surface region of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 samples is slightly electropositive, with cation/anion ratio 52:48 and 53:47, respectively. Model surface structures, which are fully compatible with the experimental results, comprise 0.76 nm thick CdTeO3 layer at the surface of Cd0.99Fe0.01Te0.97Se0.03 and 0.33 nm thick mixed ZnO/TeO2 oxide layer on Zn0.98Fe0.02Te0.91Se0.09. In both samples the oxide layer is only a few atomic layers thick, implying that it suppresses further rapid migration of oxygen into the bulk.
T2  - Vacuum
T1  - XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited
VL  - 176
SP  - 109340
DO  - 10.1016/j.vacuum.2020.109340
ER  - 
@article{
author = "Medić-Ilić, Mirjana and Bundaleski, Nenad and Ivanović, Nenad and Teodoro, Orlando M. N. D. and Rakočević, Zlatko Lj. and Minić, Dragica M. and Romčević, Nebojša Ž. and Radisavljević, Ivana",
year = "2020",
abstract = "Recently introduced model for quantitative analysis of in-depth non-uniform surfaces is applied to reexamine the X-ray Photoelectron Spectroscopy (XPS) data of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 crystalline samples. Special attention is paid to the precise identification of phases which form the bulk-like near-surface region and the surface overlayers (the oxide layer and the layer of organic impurities), as well as the influence of surface morphology on the measurements. The obtained results fully support earlier qualitative estimations, but also provide new quantitative insight into the composition of the three investigated regions. The near-surface region of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 samples is slightly electropositive, with cation/anion ratio 52:48 and 53:47, respectively. Model surface structures, which are fully compatible with the experimental results, comprise 0.76 nm thick CdTeO3 layer at the surface of Cd0.99Fe0.01Te0.97Se0.03 and 0.33 nm thick mixed ZnO/TeO2 oxide layer on Zn0.98Fe0.02Te0.91Se0.09. In both samples the oxide layer is only a few atomic layers thick, implying that it suppresses further rapid migration of oxygen into the bulk.",
journal = "Vacuum",
title = "XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited",
volume = "176",
pages = "109340",
doi = "10.1016/j.vacuum.2020.109340"
}
Medić-Ilić, M., Bundaleski, N., Ivanović, N., Teodoro, O. M. N. D., Rakočević, Z. Lj., Minić, D. M., Romčević, N. Ž.,& Radisavljević, I.. (2020). XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited. in Vacuum, 176, 109340.
https://doi.org/10.1016/j.vacuum.2020.109340
Medić-Ilić M, Bundaleski N, Ivanović N, Teodoro OMND, Rakočević ZL, Minić DM, Romčević NŽ, Radisavljević I. XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited. in Vacuum. 2020;176:109340.
doi:10.1016/j.vacuum.2020.109340 .
Medić-Ilić, Mirjana, Bundaleski, Nenad, Ivanović, Nenad, Teodoro, Orlando M. N. D., Rakočević, Zlatko Lj., Minić, Dragica M., Romčević, Nebojša Ž., Radisavljević, Ivana, "XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited" in Vacuum, 176 (2020):109340,
https://doi.org/10.1016/j.vacuum.2020.109340 . .
5
4

Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization

Dodevski, Vladimir; Pagnacco, Maja C.; Radović, Ivana M.; Rosić, Milena; Janković, Bojan Ž.; Stojmenović, Marija; Mitić, Vojislav V.

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Pagnacco, Maja C.
AU  - Radović, Ivana M.
AU  - Rosić, Milena
AU  - Janković, Bojan Ž.
AU  - Stojmenović, Marija
AU  - Mitić, Vojislav V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8817
AB  - The aim of this research was to obtain a carbon solid residue by the carbonization process of biomass in an inert atmosphere which, through physical activation and chemical treatment (using TEOS - tetraethyl orthosilicate) would allow creation of highly porous and spatially distinct ordered bio-SiC ceramics. The results of carbonization experiments at several operating temperatures and activation of carbons with multiple-cycle treatments TEOS clearly showed the possibility of obtaining SiC nano-structures, after performing the carbothermal reduction at 1400 °C. The increase in the activation temperature and the duration time starts the development of the SiC particles inside the porous structure. The XRPD analysis showed that the major SiC polytype has cubic SiC (β-SiC) structure and remainder is hexagonal SiC polytypic (α-SiC) structure. It was established that the carbons obtained from carbonization of the Platanus orientalis L. plane tree fruit (PTF) precursor and activated at 850 °C with longer holding times (1 and 2 h) exhibit β-SiC (cubic) nano-wires. A possible nano-wires increment mechanism was suggested. The obtained results represent significant contribution in understanding the process as well as the main characteristics of SiC nano-materials and their possible applications.
T2  - Materials Chemistry and Physics
T1  - Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization
VL  - 245
SP  - 122768
DO  - 10.1016/j.matchemphys.2020.122768
ER  - 
@article{
author = "Dodevski, Vladimir and Pagnacco, Maja C. and Radović, Ivana M. and Rosić, Milena and Janković, Bojan Ž. and Stojmenović, Marija and Mitić, Vojislav V.",
year = "2020",
abstract = "The aim of this research was to obtain a carbon solid residue by the carbonization process of biomass in an inert atmosphere which, through physical activation and chemical treatment (using TEOS - tetraethyl orthosilicate) would allow creation of highly porous and spatially distinct ordered bio-SiC ceramics. The results of carbonization experiments at several operating temperatures and activation of carbons with multiple-cycle treatments TEOS clearly showed the possibility of obtaining SiC nano-structures, after performing the carbothermal reduction at 1400 °C. The increase in the activation temperature and the duration time starts the development of the SiC particles inside the porous structure. The XRPD analysis showed that the major SiC polytype has cubic SiC (β-SiC) structure and remainder is hexagonal SiC polytypic (α-SiC) structure. It was established that the carbons obtained from carbonization of the Platanus orientalis L. plane tree fruit (PTF) precursor and activated at 850 °C with longer holding times (1 and 2 h) exhibit β-SiC (cubic) nano-wires. A possible nano-wires increment mechanism was suggested. The obtained results represent significant contribution in understanding the process as well as the main characteristics of SiC nano-materials and their possible applications.",
journal = "Materials Chemistry and Physics",
title = "Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization",
volume = "245",
pages = "122768",
doi = "10.1016/j.matchemphys.2020.122768"
}
Dodevski, V., Pagnacco, M. C., Radović, I. M., Rosić, M., Janković, B. Ž., Stojmenović, M.,& Mitić, V. V.. (2020). Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization. in Materials Chemistry and Physics, 245, 122768.
https://doi.org/10.1016/j.matchemphys.2020.122768
Dodevski V, Pagnacco MC, Radović IM, Rosić M, Janković BŽ, Stojmenović M, Mitić VV. Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization. in Materials Chemistry and Physics. 2020;245:122768.
doi:10.1016/j.matchemphys.2020.122768 .
Dodevski, Vladimir, Pagnacco, Maja C., Radović, Ivana M., Rosić, Milena, Janković, Bojan Ž., Stojmenović, Marija, Mitić, Vojislav V., "Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization" in Materials Chemistry and Physics, 245 (2020):122768,
https://doi.org/10.1016/j.matchemphys.2020.122768 . .
1
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4
5

Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds

Dodevski, Vladimir; Janković, Bojan Ž.; Radović, Ivana M.; Stojmenović, Marija; Čebela, Maria; Nikolić, Željka; Pagnacco, Maja C.; Panić, Ivan; Stanković, Miroslav

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Radović, Ivana M.
AU  - Stojmenović, Marija
AU  - Čebela, Maria
AU  - Nikolić, Željka
AU  - Pagnacco, Maja C.
AU  - Panić, Ivan
AU  - Stanković, Miroslav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8900
AB  - In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.
T2  - Energy and Environment
T1  - Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds
VL  - 31
IS  - 4
SP  - 583
EP  - 612
DO  - 10.1177/0958305X19880878
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Radović, Ivana M. and Stojmenović, Marija and Čebela, Maria and Nikolić, Željka and Pagnacco, Maja C. and Panić, Ivan and Stanković, Miroslav",
year = "2020",
abstract = "In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.",
journal = "Energy and Environment",
title = "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds",
volume = "31",
number = "4",
pages = "583-612",
doi = "10.1177/0958305X19880878"
}
Dodevski, V., Janković, B. Ž., Radović, I. M., Stojmenović, M., Čebela, M., Nikolić, Ž., Pagnacco, M. C., Panić, I.,& Stanković, M.. (2020). Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy and Environment, 31(4), 583-612.
https://doi.org/10.1177/0958305X19880878
Dodevski V, Janković BŽ, Radović IM, Stojmenović M, Čebela M, Nikolić Ž, Pagnacco MC, Panić I, Stanković M. Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy and Environment. 2020;31(4):583-612.
doi:10.1177/0958305X19880878 .
Dodevski, Vladimir, Janković, Bojan Ž., Radović, Ivana M., Stojmenović, Marija, Čebela, Maria, Nikolić, Željka, Pagnacco, Maja C., Panić, Ivan, Stanković, Miroslav, "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds" in Energy and Environment, 31, no. 4 (2020):583-612,
https://doi.org/10.1177/0958305X19880878 . .
5
2
4

The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions

Manić, Nebojša G.; Janković, Bojan Ž.; Dodevski, Vladimir; Stojiljković, Dragoslava; Jovanović, Vladimir V.

(2020)

TY  - CONF
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8527
AB  - As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.
C3  - Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019
T1  - The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions
VL  - 90
SP  - 39
EP  - 60
DO  - 10.1007/978-3-030-30853-7_3
ER  - 
@conference{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.",
journal = "Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019",
title = "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions",
volume = "90",
pages = "39-60",
doi = "10.1007/978-3-030-30853-7_3"
}
Manić, N. G., Janković, B. Ž., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019, 90, 39-60.
https://doi.org/10.1007/978-3-030-30853-7_3
Manić NG, Janković BŽ, Dodevski V, Stojiljković D, Jovanović VV. The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019. 2020;90:39-60.
doi:10.1007/978-3-030-30853-7_3 .
Manić, Nebojša G., Janković, Bojan Ž., Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions" in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019, 90 (2020):39-60,
https://doi.org/10.1007/978-3-030-30853-7_3 . .
2
1
1

Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)

Manić, Nebojša G.; Janković, Bojan Ž.; Pijović, Milena; Waisi, Hadi; Dodevski, Vladimir; Stojiljković, Dragoslava; Jovanović, Vladimir V.

(2020)

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Pijović, Milena
AU  - Waisi, Hadi
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8904
AB  - In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)
VL  - 142
IS  - 2
SP  - 565
EP  - 579
DO  - 10.1007/s10973-020-09307-5
ER  - 
@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Pijović, Milena and Waisi, Hadi and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)",
volume = "142",
number = "2",
pages = "565-579",
doi = "10.1007/s10973-020-09307-5"
}
Manić, N. G., Janković, B. Ž., Pijović, M., Waisi, H., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry, 142(2), 565-579.
https://doi.org/10.1007/s10973-020-09307-5
Manić NG, Janković BŽ, Pijović M, Waisi H, Dodevski V, Stojiljković D, Jovanović VV. Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry. 2020;142(2):565-579.
doi:10.1007/s10973-020-09307-5 .
Manić, Nebojša G., Janković, Bojan Ž., Pijović, Milena, Waisi, Hadi, Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):565-579,
https://doi.org/10.1007/s10973-020-09307-5 . .
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Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere

Janković, Bojan Ž.; Manić, Nebojša G.; Dodevski, Vladimir; Radojević, Miloš; Stojiljković, Dragoslava

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Radojević, Miloš
AU  - Stojiljković, Dragoslava
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8906
AB  - The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere
VL  - 142
IS  - 2
SP  - 953
EP  - 976
DO  - 10.1007/s10973-019-09154-z
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Radojević, Miloš and Stojiljković, Dragoslava",
year = "2020",
abstract = "The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere",
volume = "142",
number = "2",
pages = "953-976",
doi = "10.1007/s10973-019-09154-z"
}
Janković, B. Ž., Manić, N. G., Dodevski, V., Radojević, M.,& Stojiljković, D.. (2020). Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry, 142(2), 953-976.
https://doi.org/10.1007/s10973-019-09154-z
Janković BŽ, Manić NG, Dodevski V, Radojević M, Stojiljković D. Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry. 2020;142(2):953-976.
doi:10.1007/s10973-019-09154-z .
Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Radojević, Miloš, Stojiljković, Dragoslava, "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):953-976,
https://doi.org/10.1007/s10973-019-09154-z . .
2
1
3