Markushev, Dragan D.

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  • Markushev, Dragan D. (17)

Author's Bibliography

Inverse problem solving in semiconductor photoacoustics by neural networks

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

(2021)

TY  - JOUR
AU  - Đorđević, Katarina Lj.
AU  - Markushev, Dragan D.
AU  - Ćojbašić, Žarko M.
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 M. and Galović, Slobodanka",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9075",
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. M.,& Galović, S. (2021). Inverse problem solving in semiconductor photoacoustics by neural networks.
Inverse Problems in Science and Engineering, 29(2), 248-262.
https://doi.org/10.1080/17415977.2020.1787405
Đorđević KL, Markushev DD, Ćojbašić ŽM, Galović S. Inverse problem solving in semiconductor photoacoustics by neural networks. Inverse Problems in Science and Engineering. 2021;29(2):248-262
Đorđević Katarina Lj., Markushev Dragan D., Ćojbašić Žarko M., Galović Slobodanka, "Inverse problem solving in semiconductor photoacoustics by neural networks" Inverse Problems in Science and Engineering, 29, no. 2 (2021):248-262,
https://doi.org/10.1080/17415977.2020.1787405 .

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  - http://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",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8759",
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.
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. Silicon. 2020;12(6):1289-1300
Đorđević Katarina Lj., Markushev Dragan D., Ćojbašić Žarko М., "Photoacoustic Measurements of the Thermal and Elastic Properties of n-Type Silicon Using Neural Networks" Silicon, 12, no. 6 (2020):1289-1300,
https://doi.org/10.1007/s12633-019-00213-6 .
4
4
4

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",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8972",
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.
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. Optical and Quantum Electronics. 2020;52(5):247
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" Optical and Quantum Electronics, 52, no. 5 (2020):247,
https://doi.org/10.1007/s11082-020-02373-x .

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",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9005",
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.
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. Journal of Computational Electronics. 2020;19(3):1268-1280
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" Journal of Computational Electronics, 19, no. 3 (2020):1268-1280,
https://doi.org/10.1007/s10825-020-01507-4 .

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",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8912",
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.
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. International Journal of Thermophysics. 2020;41(6):73
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" International Journal of Thermophysics, 41, no. 6 (2020):73,
https://doi.org/10.1007/s10765-020-02650-7 .

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",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8982",
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.
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. Optical and Quantum Electronics. 2020;52(5):246
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" Optical and Quantum Electronics, 52, no. 5 (2020):246,
https://doi.org/10.1007/s11082-020-02372-y .
1

Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics

Nešić, Mioljub V.; Popović, Milan; Rabasović, Mihailo D.; Miličević, Dejan S.; Suljovrujić, Edin H.; Markushev, Dragan D.; Stojanović, Zoran A.

(2018)

TY  - JOUR
AU  - Nešić, Mioljub V.
AU  - Popović, Milan
AU  - Rabasović, Mihailo D.
AU  - Miličević, Dejan S.
AU  - Suljovrujić, Edin H.
AU  - Markushev, Dragan D.
AU  - Stojanović, Zoran A.
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7199
AB  - In this work, thermal diffusivity of crystalline high-density polyethylene samples of various thickness, and prepared using different procedures, was evaluated by transmission gas-microphone frequency photoacoustics. The samples composition analysis and their degree of crystallinity were determined from the wide-angle X-ray diffraction, which confirmed that high-density polyethylene samples, obtained by slow and fast cooling, were equivalent in composition but with different degrees of crystallinity. Structural analysis, performed by differential scanning calorimetry, demonstrated that all of the used samples had different levels of crystallinity, depending not only on the preparing procedure, but also on sample thickness. Therefore, in order to evaluate the samples thermal diffusivity, it was necessary to modify standard photoacoustic fitting procedures (based on the normalization of photoacoustic amplitude and phase characteristics on two thickness levels) for the interpretation of photoacoustic measurements. The calculated values of thermal diffusivity were in the range of the expected literature values. Besides that, the obtained results indicate the unexpected correlation between the values of thermal diffusivity and thermal conductivity with the degree of crystallinity of the investigated geometrically thin samples. The results indicate the necessity of additional investigation of energy transport in macromolecular systems, as well as the possible employment of the photoacoustic techniques in order to clarify its mechanism.
T2  - International Journal of Thermophysics
T1  - Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics
VL  - 39
IS  - 2
DO  - 10.1007/s10765-017-2345-0
ER  - 
@article{
author = "Nešić, Mioljub V. and Popović, Milan and Rabasović, Mihailo D. and Miličević, Dejan S. and Suljovrujić, Edin H. and Markushev, Dragan D. and Stojanović, Zoran A.",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7199",
abstract = "In this work, thermal diffusivity of crystalline high-density polyethylene samples of various thickness, and prepared using different procedures, was evaluated by transmission gas-microphone frequency photoacoustics. The samples composition analysis and their degree of crystallinity were determined from the wide-angle X-ray diffraction, which confirmed that high-density polyethylene samples, obtained by slow and fast cooling, were equivalent in composition but with different degrees of crystallinity. Structural analysis, performed by differential scanning calorimetry, demonstrated that all of the used samples had different levels of crystallinity, depending not only on the preparing procedure, but also on sample thickness. Therefore, in order to evaluate the samples thermal diffusivity, it was necessary to modify standard photoacoustic fitting procedures (based on the normalization of photoacoustic amplitude and phase characteristics on two thickness levels) for the interpretation of photoacoustic measurements. The calculated values of thermal diffusivity were in the range of the expected literature values. Besides that, the obtained results indicate the unexpected correlation between the values of thermal diffusivity and thermal conductivity with the degree of crystallinity of the investigated geometrically thin samples. The results indicate the necessity of additional investigation of energy transport in macromolecular systems, as well as the possible employment of the photoacoustic techniques in order to clarify its mechanism.",
journal = "International Journal of Thermophysics",
title = "Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics",
volume = "39",
number = "2",
doi = "10.1007/s10765-017-2345-0"
}
Nešić, M. V., Popović, M., Rabasović, M. D., Miličević, D. S., Suljovrujić, E. H., Markushev, D. D.,& Stojanović, Z. A. (2018). Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics.
International Journal of Thermophysics, 39(2).
https://doi.org/10.1007/s10765-017-2345-0
Nešić MV, Popović M, Rabasović MD, Miličević DS, Suljovrujić EH, Markushev DD, Stojanović ZA. Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics. International Journal of Thermophysics. 2018;39(2)
Nešić Mioljub V., Popović Milan, Rabasović Mihailo D., Miličević Dejan S., Suljovrujić Edin H., Markushev Dragan D., Stojanović Zoran A., "Thermal Diffusivity of High-Density Polyethylene Samples of Different Crystallinity Evaluated by Indirect Transmission Photoacoustics" International Journal of Thermophysics, 39, no. 2 (2018),
https://doi.org/10.1007/s10765-017-2345-0 .
3
3
3

Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory

Popović, Marica N.; Nešić, Mioljub V.; Živanov, Miloš; Markushev, Dragan D.; Galović, Slobodanka

(2018)

TY  - JOUR
AU  - Popović, Marica N.
AU  - Nešić, Mioljub V.
AU  - Živanov, Miloš
AU  - Markushev, Dragan D.
AU  - Galović, Slobodanka
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1586-x
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7834
AB  - In this paper, the models of surface temperature variations have been derived. Based on these models, photoacoustic (PA) response has been commented for transmission PA setup configurations of two-layer optically transparent samples, including the impact of finite heat propagation velocity through both layers (thermal memory) and the existence of volume absorption in both layers. By analyzing the derived model it has been shown that many parameters influence the photoacoustic response. Based on the derived model, some approximations have been discussed in order to enable the development of more accurate inverse solutions of photoacoustic problem, and the estimation of optical, thermal and other related physical properties of versatile materials. By using specific two-layer structure that consist of aluminum sample coated with layer of color dye, used in some photoacoustic experimental investigations, the influence of thermal memory properties of either the sample or the coating has been discussed. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Optical and Quantum Electronics
T1  - Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory
VL  - 50
IS  - 9
SP  - 330
DO  - 10.1007/s11082-018-1586-x
ER  - 
@article{
author = "Popović, Marica N. and Nešić, Mioljub V. and Živanov, Miloš and Markushev, Dragan D. and Galović, Slobodanka",
year = "2018",
url = "http://link.springer.com/10.1007/s11082-018-1586-x, http://vinar.vin.bg.ac.rs/handle/123456789/7834",
abstract = "In this paper, the models of surface temperature variations have been derived. Based on these models, photoacoustic (PA) response has been commented for transmission PA setup configurations of two-layer optically transparent samples, including the impact of finite heat propagation velocity through both layers (thermal memory) and the existence of volume absorption in both layers. By analyzing the derived model it has been shown that many parameters influence the photoacoustic response. Based on the derived model, some approximations have been discussed in order to enable the development of more accurate inverse solutions of photoacoustic problem, and the estimation of optical, thermal and other related physical properties of versatile materials. By using specific two-layer structure that consist of aluminum sample coated with layer of color dye, used in some photoacoustic experimental investigations, the influence of thermal memory properties of either the sample or the coating has been discussed. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Optical and Quantum Electronics",
title = "Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory",
volume = "50",
number = "9",
pages = "330",
doi = "10.1007/s11082-018-1586-x"
}
Popović, M. N., Nešić, M. V., Živanov, M., Markushev, D. D.,& Galović, S. (2018). Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory.
Optical and Quantum Electronics, 50(9), 330.
https://doi.org/10.1007/s11082-018-1586-x
Popović MN, Nešić MV, Živanov M, Markushev DD, Galović S. Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory. Optical and Quantum Electronics. 2018;50(9):330
Popović Marica N., Nešić Mioljub V., Živanov Miloš, Markushev Dragan D., Galović Slobodanka, "Photoacoustic response of a transmission photoacoustic configuration for two-layer samples with thermal memory" Optical and Quantum Electronics, 50, no. 9 (2018):330,
https://doi.org/10.1007/s11082-018-1586-x .
4
3
4

Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples

Popović, Mihajlo N.; Nešić, Mioljub V.; Ciric-Kostic, S.; Živanov, Miloš; Markushev, Dragan D.; Rabasović, Mihailo D.; Galović, Slobodanka

(2016)

TY  - JOUR
AU  - Popović, Mihajlo N.
AU  - Nešić, Mioljub V.
AU  - Ciric-Kostic, S.
AU  - Živanov, Miloš
AU  - Markushev, Dragan D.
AU  - Rabasović, Mihailo D.
AU  - Galović, Slobodanka
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1320
AB  - A minimum volume photoacoustic (PA) cell, employed as an acoustic resonator, is presented. A model of the PA cell transfer function, as a combination of two Helmholtz resonators, is derived. Frequency PA response is described as the product of theoretically derived pressure variation and the transfer function of the PA cell. The derived model is applied to the frequency PA measurements, performed on laser-sintered polyamide. It is shown that the derived model explains the occurrence of resonant peaks in the high-frequency domain ( GT 10 kHz), in both amplitude and phase measurements, obtained by a gas-microphone minimal volume PA cell. The implementation of the model in the growing possibilities of sample characterization using gas-microphone PA cell is discussed.
T2  - International Journal of Thermophysics
T1  - Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples
VL  - 37
IS  - 12
DO  - 10.1007/s10765-016-2124-3
ER  - 
@article{
author = "Popović, Mihajlo N. and Nešić, Mioljub V. and Ciric-Kostic, S. and Živanov, Miloš and Markushev, Dragan D. and Rabasović, Mihailo D. and Galović, Slobodanka",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1320",
abstract = "A minimum volume photoacoustic (PA) cell, employed as an acoustic resonator, is presented. A model of the PA cell transfer function, as a combination of two Helmholtz resonators, is derived. Frequency PA response is described as the product of theoretically derived pressure variation and the transfer function of the PA cell. The derived model is applied to the frequency PA measurements, performed on laser-sintered polyamide. It is shown that the derived model explains the occurrence of resonant peaks in the high-frequency domain ( GT 10 kHz), in both amplitude and phase measurements, obtained by a gas-microphone minimal volume PA cell. The implementation of the model in the growing possibilities of sample characterization using gas-microphone PA cell is discussed.",
journal = "International Journal of Thermophysics",
title = "Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples",
volume = "37",
number = "12",
doi = "10.1007/s10765-016-2124-3"
}
Popović, M. N., Nešić, M. V., Ciric-Kostic, S., Živanov, M., Markushev, D. D., Rabasović, M. D.,& Galović, S. (2016). Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples.
International Journal of Thermophysics, 37(12).
https://doi.org/10.1007/s10765-016-2124-3
Popović MN, Nešić MV, Ciric-Kostic S, Živanov M, Markushev DD, Rabasović MD, Galović S. Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples. International Journal of Thermophysics. 2016;37(12)
Popović Mihajlo N., Nešić Mioljub V., Ciric-Kostic S., Živanov Miloš, Markushev Dragan D., Rabasović Mihailo D., Galović Slobodanka, "Helmholtz Resonances in Photoacoustic Experiment with Laser-Sintered Polyamide Including Thermal Memory of Samples" International Journal of Thermophysics, 37, no. 12 (2016),
https://doi.org/10.1007/s10765-016-2124-3 .
8
8
8

Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain

Markushev, Dragan D.; Rabasović, Mihailo D.; Todorovic, D. M.; Galović, Slobodanka; Bialkowski, S. E.

(2015)

TY  - JOUR
AU  - Markushev, Dragan D.
AU  - Rabasović, Mihailo D.
AU  - Todorovic, D. M.
AU  - Galović, Slobodanka
AU  - Bialkowski, S. E.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/488
AB  - Methods for photoacoustic signal measurement, rectification, and analysis for 85 mu m thin Si samples in the 20-20 000 Hz modulation frequency range are presented. Methods for frequency-dependent amplitude and phase signal rectification in the presence of coherent and incoherent noise as well as distortion due to microphone characteristics are presented. Signal correction is accomplished using inverse system response functions deduced by comparing real to ideal signals for a sample with well-known bulk parameters and dimensions. The system response is a piece-wise construction, each component being due to a particular effect of the measurement system. Heat transfer and elastic effects are modeled using standard Rosencweig-Gersho and elastic-bending theories. Thermal diffusion, thermoelastic, and plasmaelastic signal components are calculated and compared to measurements. The differences between theory and experiment are used to detect and correct signal distortion and to determine detector and sound-card characteristics. Corrected signal analysis is found to faithfully reflect known sample parameters. (C) 2015 AIP Publishing LLC.
T2  - Review of Scientific Instruments
T1  - Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain
VL  - 86
IS  - 3
DO  - 10.1063/1.4914894
ER  - 
@article{
author = "Markushev, Dragan D. and Rabasović, Mihailo D. and Todorovic, D. M. and Galović, Slobodanka and Bialkowski, S. E.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/488",
abstract = "Methods for photoacoustic signal measurement, rectification, and analysis for 85 mu m thin Si samples in the 20-20 000 Hz modulation frequency range are presented. Methods for frequency-dependent amplitude and phase signal rectification in the presence of coherent and incoherent noise as well as distortion due to microphone characteristics are presented. Signal correction is accomplished using inverse system response functions deduced by comparing real to ideal signals for a sample with well-known bulk parameters and dimensions. The system response is a piece-wise construction, each component being due to a particular effect of the measurement system. Heat transfer and elastic effects are modeled using standard Rosencweig-Gersho and elastic-bending theories. Thermal diffusion, thermoelastic, and plasmaelastic signal components are calculated and compared to measurements. The differences between theory and experiment are used to detect and correct signal distortion and to determine detector and sound-card characteristics. Corrected signal analysis is found to faithfully reflect known sample parameters. (C) 2015 AIP Publishing LLC.",
journal = "Review of Scientific Instruments",
title = "Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain",
volume = "86",
number = "3",
doi = "10.1063/1.4914894"
}
Markushev, D. D., Rabasović, M. D., Todorovic, D. M., Galović, S.,& Bialkowski, S. E. (2015). Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain.
Review of Scientific Instruments, 86(3).
https://doi.org/10.1063/1.4914894
Markushev DD, Rabasović MD, Todorovic DM, Galović S, Bialkowski SE. Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain. Review of Scientific Instruments. 2015;86(3)
Markushev Dragan D., Rabasović Mihailo D., Todorovic D. M., Galović Slobodanka, Bialkowski S. E., "Photoacoustic signal and noise analysis for Si thin plate: Signal correction in frequency domain" Review of Scientific Instruments, 86, no. 3 (2015),
https://doi.org/10.1063/1.4914894 .
17
17
16

Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments

Markushev, Dragan D.; Ordonez-Miranda, J.; Rabasović, Mihailo D.; Galović, Slobodanka; Todorovic, D. M.; Bialkowski, S. E.

(2015)

TY  - JOUR
AU  - Markushev, Dragan D.
AU  - Ordonez-Miranda, J.
AU  - Rabasović, Mihailo D.
AU  - Galović, Slobodanka
AU  - Todorovic, D. M.
AU  - Bialkowski, S. E.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/645
AB  - The open-cell photoacoustic signal measured in the transmission configuration for aluminum thin plates with thicknesses of 280 mu m, 197 mu m, and 112 mu m is experimentally and theoretically analyzed, in the 20 Hz-7 kHz modulation frequency range. It is shown that the observed differences between the predictions of the standard thermoelastic model and the experiment data of both the amplitude and phase of the photoacoustic signal can be overcome by considering the aluminum samples coated with a thin layer of black paint as volume-absorber materials. This new approach provides a quite good agreement with the obtained experimental data, in the whole frequency range, and yields an effective absorption coefficient of (16 +/- 2) mm(-1), for a 280 mu m-thick sample. The introduction of the finite absorption coefficient led to the correct ratio between the thermal diffusion and thermoelastic components of the photoacoustic signal. Furthermore, it is found that the volume-absorber approach accurately describes the behavior of the amplitude, but not that of the phase recorded for a 112 mu m-thick sample, due to its relatively strong thermoelastic bending, which is not considered by this theory. Within the approximation of the small bending, the proposed volume-absorber model provides a reliable description of the photoacoustic signal for Al samples thicker than 112 mu m, and extends the applicability of the classical opaque approach. (C) 2015 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments
VL  - 117
IS  - 24
DO  - 10.1063/1.4922718
ER  - 
@article{
author = "Markushev, Dragan D. and Ordonez-Miranda, J. and Rabasović, Mihailo D. and Galović, Slobodanka and Todorovic, D. M. and Bialkowski, S. E.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/645",
abstract = "The open-cell photoacoustic signal measured in the transmission configuration for aluminum thin plates with thicknesses of 280 mu m, 197 mu m, and 112 mu m is experimentally and theoretically analyzed, in the 20 Hz-7 kHz modulation frequency range. It is shown that the observed differences between the predictions of the standard thermoelastic model and the experiment data of both the amplitude and phase of the photoacoustic signal can be overcome by considering the aluminum samples coated with a thin layer of black paint as volume-absorber materials. This new approach provides a quite good agreement with the obtained experimental data, in the whole frequency range, and yields an effective absorption coefficient of (16 +/- 2) mm(-1), for a 280 mu m-thick sample. The introduction of the finite absorption coefficient led to the correct ratio between the thermal diffusion and thermoelastic components of the photoacoustic signal. Furthermore, it is found that the volume-absorber approach accurately describes the behavior of the amplitude, but not that of the phase recorded for a 112 mu m-thick sample, due to its relatively strong thermoelastic bending, which is not considered by this theory. Within the approximation of the small bending, the proposed volume-absorber model provides a reliable description of the photoacoustic signal for Al samples thicker than 112 mu m, and extends the applicability of the classical opaque approach. (C) 2015 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments",
volume = "117",
number = "24",
doi = "10.1063/1.4922718"
}
Markushev, D. D., Ordonez-Miranda, J., Rabasović, M. D., Galović, S., Todorovic, D. M.,& Bialkowski, S. E. (2015). Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments.
Journal of Applied Physics, 117(24).
https://doi.org/10.1063/1.4922718
Markushev DD, Ordonez-Miranda J, Rabasović MD, Galović S, Todorovic DM, Bialkowski SE. Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments. Journal of Applied Physics. 2015;117(24)
Markushev Dragan D., Ordonez-Miranda J., Rabasović Mihailo D., Galović Slobodanka, Todorovic D. M., Bialkowski S. E., "Effect of the absorption coefficient of aluminium plates on their thermoelastic bending in photoacoustic experiments" Journal of Applied Physics, 117, no. 24 (2015),
https://doi.org/10.1063/1.4922718 .
7
18
18
18

Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response

Markushev, Dragan D.; Rabasović, Mihailo D.; Nešić, Mioljub V.; Popović, Milan; Galović, Slobodanka

(2012)

TY  - JOUR
AU  - Markushev, Dragan D.
AU  - Rabasović, Mihailo D.
AU  - Nešić, Mioljub V.
AU  - Popović, Milan
AU  - Galović, Slobodanka
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6986
AB  - In this study, a model of thermoconducting components of the transmission photoacoustic response is analyzed, which includes thermal memory properties of both the examined solid sample and its fluid environment. It is shown that, at low modulation frequencies, lower than minimum among the inverse thermal relaxation time of air, the inverse thermal relaxation time of the sample, and the certain frequency at which the sample is thinner than one-quarter of the wavelength of time-varying temperature perturbation, thermal memory does not affect the photoacoustic response, while, at high frequencies, noticeable effects are observed. These results indicate the possibility of evaluating thermal memory properties of solid samples using classical, transmission, high frequency photoacoustic measurements.
T2  - International Journal of Thermophysics
T1  - Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response
VL  - 33
IS  - 10-11
SP  - 2210
EP  - 2216
DO  - 10.1007/s10765-012-1229-6
ER  - 
@article{
author = "Markushev, Dragan D. and Rabasović, Mihailo D. and Nešić, Mioljub V. and Popović, Milan and Galović, Slobodanka",
year = "2012",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/6986",
abstract = "In this study, a model of thermoconducting components of the transmission photoacoustic response is analyzed, which includes thermal memory properties of both the examined solid sample and its fluid environment. It is shown that, at low modulation frequencies, lower than minimum among the inverse thermal relaxation time of air, the inverse thermal relaxation time of the sample, and the certain frequency at which the sample is thinner than one-quarter of the wavelength of time-varying temperature perturbation, thermal memory does not affect the photoacoustic response, while, at high frequencies, noticeable effects are observed. These results indicate the possibility of evaluating thermal memory properties of solid samples using classical, transmission, high frequency photoacoustic measurements.",
journal = "International Journal of Thermophysics",
title = "Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response",
volume = "33",
number = "10-11",
pages = "2210-2216",
doi = "10.1007/s10765-012-1229-6"
}
Markushev, D. D., Rabasović, M. D., Nešić, M. V., Popović, M.,& Galović, S. (2012). Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response.
International Journal of Thermophysics, 33(10-11), 2210-2216.
https://doi.org/10.1007/s10765-012-1229-6
Markushev DD, Rabasović MD, Nešić MV, Popović M, Galović S. Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response. International Journal of Thermophysics. 2012;33(10-11):2210-2216
Markushev Dragan D., Rabasović Mihailo D., Nešić Mioljub V., Popović Milan, Galović Slobodanka, "Influence of Thermal Memory on Thermal Piston Model of Photoacoustic Response" International Journal of Thermophysics, 33, no. 10-11 (2012):2210-2216,
https://doi.org/10.1007/s10765-012-1229-6 .
8
9
9

Low-cost, portable photoacoustic setup for solid samples

Rabasović, Mihailo D.; Nikolic, Marko G.; Dramićanin, Miroslav; Franko, Mladen; Markushev, Dragan D.

(2009)

TY  - JOUR
AU  - Rabasović, Mihailo D.
AU  - Nikolic, Marko G.
AU  - Dramićanin, Miroslav
AU  - Franko, Mladen
AU  - Markushev, Dragan D.
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3774
AB  - We have developed a low-cost, portable photoacoustic instrument. The device consists of a detection unit comprising a photoacoustic cell with an embedded laser diode or a light-emitting diode, a photodiode, an electret microphone (60 x 40 x 40 mm(3)), and a signal processing and power supply unit in a box containing batteries and electronics (160 x 140 x 60 mm(3)). A PC or portable computer is required to operate the device and for data processing. The weight of the instrument without the computer is 1.70 kg. The computer, or more precisely, its sound card is the essential part of the apparatus because it generates the signal for the laser diode or light-emitting diode modulation and processes signals from the microphone and photodiode. The computer sound card is used as a dual-phase lock-in amplifier. The software used for the control of the setup was also developed in course of this work. The photoacoustic instrument presented here allows measurements and quantitative analysis of numerous solid-state samples. It is simple in design and use, having a reasonable weight and portability.
T2  - Measurement Science and Technology
T1  - Low-cost, portable photoacoustic setup for solid samples
VL  - 20
IS  - 9
DO  - 10.1088/0957-0233/20/9/095902
ER  - 
@article{
author = "Rabasović, Mihailo D. and Nikolic, Marko G. and Dramićanin, Miroslav and Franko, Mladen and Markushev, Dragan D.",
year = "2009",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/3774",
abstract = "We have developed a low-cost, portable photoacoustic instrument. The device consists of a detection unit comprising a photoacoustic cell with an embedded laser diode or a light-emitting diode, a photodiode, an electret microphone (60 x 40 x 40 mm(3)), and a signal processing and power supply unit in a box containing batteries and electronics (160 x 140 x 60 mm(3)). A PC or portable computer is required to operate the device and for data processing. The weight of the instrument without the computer is 1.70 kg. The computer, or more precisely, its sound card is the essential part of the apparatus because it generates the signal for the laser diode or light-emitting diode modulation and processes signals from the microphone and photodiode. The computer sound card is used as a dual-phase lock-in amplifier. The software used for the control of the setup was also developed in course of this work. The photoacoustic instrument presented here allows measurements and quantitative analysis of numerous solid-state samples. It is simple in design and use, having a reasonable weight and portability.",
journal = "Measurement Science and Technology",
title = "Low-cost, portable photoacoustic setup for solid samples",
volume = "20",
number = "9",
doi = "10.1088/0957-0233/20/9/095902"
}
Rabasović, M. D., Nikolic, M. G., Dramićanin, M., Franko, M.,& Markushev, D. D. (2009). Low-cost, portable photoacoustic setup for solid samples.
Measurement Science and Technology, 20(9).
https://doi.org/10.1088/0957-0233/20/9/095902
Rabasović MD, Nikolic MG, Dramićanin M, Franko M, Markushev DD. Low-cost, portable photoacoustic setup for solid samples. Measurement Science and Technology. 2009;20(9)
Rabasović Mihailo D., Nikolic Marko G., Dramićanin Miroslav, Franko Mladen, Markushev Dragan D., "Low-cost, portable photoacoustic setup for solid samples" Measurement Science and Technology, 20, no. 9 (2009),
https://doi.org/10.1088/0957-0233/20/9/095902 .
30
27
33

Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures

Nikohic, J. D.; Rabasović, Mihailo D.; Markushev, Dragan D.; Jovanovic-Kurepa, J.

(2008)

TY  - JOUR
AU  - Nikohic, J. D.
AU  - Rabasović, Mihailo D.
AU  - Markushev, Dragan D.
AU  - Jovanovic-Kurepa, J.
PY  - 2008
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6735
AB  - Buffer-gas influence on the multiphoton absorption and dissociation in different mixtures was investigated using the simple method based on the empirical and theoretical vibrational energy distribution, generalized coupled two-level model and photoacoustic cell especially designed for low pressures studies. Energy transfer efficiency was analyzed by means of pulsed photoacoustic spectroscopy technique. Collisional effects of buffer-gas (Ar) pressure are introduced to enhance the absorption and relaxation characteristics of irradiated absorbing molecules (SF6). Functional behavior of mean number of absorbed photons per molecule (n)(total) and a dependence on buffergas pressure (P-buff) which enables us to confirm or predict some physical and chemical processes are presented. Limitation of proposed model was analyzed depending on both gas pressure and laser fluence. Results are compared with other previously obtained by the same experimental technique but for different absorber and different molecular buffer-gas. (c) 2007 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures
VL  - 30
IS  - 7
SP  - 1193
EP  - 1196
DO  - 10.1016/j.optmat.2007.05.047
ER  - 
@article{
author = "Nikohic, J. D. and Rabasović, Mihailo D. and Markushev, Dragan D. and Jovanovic-Kurepa, J.",
year = "2008",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/6735",
abstract = "Buffer-gas influence on the multiphoton absorption and dissociation in different mixtures was investigated using the simple method based on the empirical and theoretical vibrational energy distribution, generalized coupled two-level model and photoacoustic cell especially designed for low pressures studies. Energy transfer efficiency was analyzed by means of pulsed photoacoustic spectroscopy technique. Collisional effects of buffer-gas (Ar) pressure are introduced to enhance the absorption and relaxation characteristics of irradiated absorbing molecules (SF6). Functional behavior of mean number of absorbed photons per molecule (n)(total) and a dependence on buffergas pressure (P-buff) which enables us to confirm or predict some physical and chemical processes are presented. Limitation of proposed model was analyzed depending on both gas pressure and laser fluence. Results are compared with other previously obtained by the same experimental technique but for different absorber and different molecular buffer-gas. (c) 2007 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures",
volume = "30",
number = "7",
pages = "1193-1196",
doi = "10.1016/j.optmat.2007.05.047"
}
Nikohic, J. D., Rabasović, M. D., Markushev, D. D.,& Jovanovic-Kurepa, J. (2008). Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures.
Optical Materials, 30(7), 1193-1196.
https://doi.org/10.1016/j.optmat.2007.05.047
Nikohic JD, Rabasović MD, Markushev DD, Jovanovic-Kurepa J. Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures. Optical Materials. 2008;30(7):1193-1196
Nikohic J. D., Rabasović Mihailo D., Markushev Dragan D., Jovanovic-Kurepa J., "Buffer-gas influence on multiphoton absorption and dissociation in different gas mixtures" Optical Materials, 30, no. 7 (2008):1193-1196,
https://doi.org/10.1016/j.optmat.2007.05.047 .
2
2
2

Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics

Rabasović, Mihailo D.; Krneta-Nikolić, Jelena D.; Markushev, Dragan D.

(2007)

TY  - JOUR
AU  - Rabasović, Mihailo D.
AU  - Krneta-Nikolić, Jelena D.
AU  - Markushev, Dragan D.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3217
AB  - Measuring the vibrational-to-translational relaxation time tau(V-T) in gases is one of the applications of pulsed photoacoustic spectroscopy. Unfortunately, the spatial profile of the laser beam can significantly influence the accuracy of these measurements. Namely, minor changes in the spatial profile of the laser beam cause significant errors in the tau(V-T) measuring. We present a method for simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time. It is based on the temporal shape of the photoacoustic pulse and utilizes a mathematical algorithm developed for photoacoustic tomography.
T2  - Applied Physics. B: Lasers and Optics
T1  - Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics
VL  - 88
IS  - 2
SP  - 309
EP  - 315
DO  - 10.1007/s00340-007-2697-4
ER  - 
@article{
author = "Rabasović, Mihailo D. and Krneta-Nikolić, Jelena D. and Markushev, Dragan D.",
year = "2007",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/3217",
abstract = "Measuring the vibrational-to-translational relaxation time tau(V-T) in gases is one of the applications of pulsed photoacoustic spectroscopy. Unfortunately, the spatial profile of the laser beam can significantly influence the accuracy of these measurements. Namely, minor changes in the spatial profile of the laser beam cause significant errors in the tau(V-T) measuring. We present a method for simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time. It is based on the temporal shape of the photoacoustic pulse and utilizes a mathematical algorithm developed for photoacoustic tomography.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics",
volume = "88",
number = "2",
pages = "309-315",
doi = "10.1007/s00340-007-2697-4"
}
Rabasović, M. D., Krneta-Nikolić, J. D.,& Markushev, D. D. (2007). Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics.
Applied Physics. B: Lasers and Optics, 88(2), 309-315.
https://doi.org/10.1007/s00340-007-2697-4
Rabasović MD, Krneta-Nikolić JD, Markushev DD. Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics. Applied Physics. B: Lasers and Optics. 2007;88(2):309-315
Rabasović Mihailo D., Krneta-Nikolić Jelena D., Markushev Dragan D., "Simultaneous determination of the spatial profile of the laser beam and vibrational-to-translational relaxation time by pulsed photoacoustics" Applied Physics. B: Lasers and Optics, 88, no. 2 (2007):309-315,
https://doi.org/10.1007/s00340-007-2697-4 .
8
9
8

Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures

Krneta-Nikolić, Jelena D.; Rabasović, Mihailo D.; Markushev, Dragan D.

(2007)

TY  - JOUR
AU  - Krneta-Nikolić, Jelena D.
AU  - Rabasović, Mihailo D.
AU  - Markushev, Dragan D.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6707
AB  - Generalized coupled two-level model is applied in different gas mixtures and investigated for high fluence regime. Functional dependences of mean number of absorbed photons per molecule LT n GT (total) on buffer-gas pressure (P-buff) are presented, used to confirm or predict some possible physical and chemical processes, like enhanced absorption and/or dissociation. Limitations of proposed models are analyzed depending on both gas pressure and laser fluence. Results are compared with other previously obtained by the same experimental technique, but for different absorbing molecule.
T2  - Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics
T1  - Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures
VL  - 112
IS  - 5
SP  - 811
EP  - 816
DO  - 10.12693/APhysPolA.112.811
ER  - 
@article{
author = "Krneta-Nikolić, Jelena D. and Rabasović, Mihailo D. and Markushev, Dragan D.",
year = "2007",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/6707",
abstract = "Generalized coupled two-level model is applied in different gas mixtures and investigated for high fluence regime. Functional dependences of mean number of absorbed photons per molecule LT n GT (total) on buffer-gas pressure (P-buff) are presented, used to confirm or predict some possible physical and chemical processes, like enhanced absorption and/or dissociation. Limitations of proposed models are analyzed depending on both gas pressure and laser fluence. Results are compared with other previously obtained by the same experimental technique, but for different absorbing molecule.",
journal = "Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics",
title = "Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures",
volume = "112",
number = "5",
pages = "811-816",
doi = "10.12693/APhysPolA.112.811"
}
Krneta-Nikolić, J. D., Rabasović, M. D.,& Markushev, D. D. (2007). Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures.
Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 112(5), 811-816.
https://doi.org/10.12693/APhysPolA.112.811
Krneta-Nikolić JD, Rabasović MD, Markushev DD. Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures. Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics. 2007;112(5):811-816
Krneta-Nikolić Jelena D., Rabasović Mihailo D., Markushev Dragan D., "Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures" Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 112, no. 5 (2007):811-816,
https://doi.org/10.12693/APhysPolA.112.811 .

Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures

Krneta-Nikolić, Jelena D.; Rabasović, Mihailo D.; Markushev, Dragan D.

(2007)

TY  - JOUR
AU  - Krneta-Nikolić, Jelena D.
AU  - Rabasović, Mihailo D.
AU  - Markushev, Dragan D.
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6708
AB  - Influence of the buffer gas on the multiphoton absorption and dissociation in different mixtures was investigated. Simple method based on the empirical and theoretical vibrational energy distribution is applied for high fluence regime. Collisional effects of buffer gas (Ar) are introduced to enhance the absorption and relaxation of irradiated molecules (SF6 and C2H4). Functional dependences of mean number of absorbed photons per molecule ( LT n GT (total)) on the Molecular excitation level are presented, enabling us to confirm or predict the level of excitation, number of molecules directly involved in the absorption process and dissociated during the laser pulse.
T2  - Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics
T1  - Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures
VL  - 112
IS  - 5
SP  - 817
EP  - 822
DO  - 10.12693/APhysPolA.112.817
ER  - 
@article{
author = "Krneta-Nikolić, Jelena D. and Rabasović, Mihailo D. and Markushev, Dragan D.",
year = "2007",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/6708",
abstract = "Influence of the buffer gas on the multiphoton absorption and dissociation in different mixtures was investigated. Simple method based on the empirical and theoretical vibrational energy distribution is applied for high fluence regime. Collisional effects of buffer gas (Ar) are introduced to enhance the absorption and relaxation of irradiated molecules (SF6 and C2H4). Functional dependences of mean number of absorbed photons per molecule ( LT n GT (total)) on the Molecular excitation level are presented, enabling us to confirm or predict the level of excitation, number of molecules directly involved in the absorption process and dissociated during the laser pulse.",
journal = "Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics",
title = "Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures",
volume = "112",
number = "5",
pages = "817-822",
doi = "10.12693/APhysPolA.112.817"
}
Krneta-Nikolić, J. D., Rabasović, M. D.,& Markushev, D. D. (2007). Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures.
Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 112(5), 817-822.
https://doi.org/10.12693/APhysPolA.112.817
Krneta-Nikolić JD, Rabasović MD, Markushev DD. Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures. Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics. 2007;112(5):817-822
Krneta-Nikolić Jelena D., Rabasović Mihailo D., Markushev Dragan D., "Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures" Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 112, no. 5 (2007):817-822,
https://doi.org/10.12693/APhysPolA.112.817 .