TY  - CONF
AU  - Nešić, M.
AU  - Popović, M.
AU  - Galović, Slobodanka
AU  - Miletić, V.
AU  - Kostić, Lj.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11819
AB  - In transmission gas-microphone photoacoustics, in order to protect the microphone and improve the Signal to Noise Ratio of the experiment, a thin non-transparent layer is applied on the surface of the sample. When the applied layer is not illuminated – the incident light is passed through the sample, instead, and all the transmitted radiation is absorbed at the non-illuminated side of the system – optical absorption properties of the sample are preserved in the recorded photoacoustic response [1-3]. Thermoelastic component of photoacoustic response is based on the integral of temperature distribution in the sample. However, in the described configuration, the amplitude ratio and the phase difference of surface temperature variations can notably influence the direction and the intensity of the thermoelastic movement of the sample, thus modifying the induced photoacoustic response. Herein, the analysis of surface temperature variations is done, aimed at the prediction of thermoelastic component of the induced photoacoustic response, and the sensitivity of the described model to the alterations of optical absorption coefficient is analyzed and discussed.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - The analysis of the influence of optical absorbance on photothermally induced surface temperature variations in a thin sample of high optical transparence
SP  - 123
EP  - 123
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11819
ER  - 

@conference{
author = "Nešić, M. and Popović, M. and Galović, Slobodanka and Miletić, V. and Kostić, Lj.",
year = "2023",
abstract = "In transmission gas-microphone photoacoustics, in order to protect the microphone and improve the Signal to Noise Ratio of the experiment, a thin non-transparent layer is applied on the surface of the sample. When the applied layer is not illuminated – the incident light is passed through the sample, instead, and all the transmitted radiation is absorbed at the non-illuminated side of the system – optical absorption properties of the sample are preserved in the recorded photoacoustic response [1-3]. Thermoelastic component of photoacoustic response is based on the integral of temperature distribution in the sample. However, in the described configuration, the amplitude ratio and the phase difference of surface temperature variations can notably influence the direction and the intensity of the thermoelastic movement of the sample, thus modifying the induced photoacoustic response. Herein, the analysis of surface temperature variations is done, aimed at the prediction of thermoelastic component of the induced photoacoustic response, and the sensitivity of the described model to the alterations of optical absorption coefficient is analyzed and discussed.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "The analysis of the influence of optical absorbance on photothermally induced surface temperature variations in a thin sample of high optical transparence",
pages = "123-123",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11819"
}

Nešić, M., Popović, M., Galović, S., Miletić, V.,& Kostić, Lj.. (2023). The analysis of the influence of optical absorbance on photothermally induced surface temperature variations in a thin sample of high optical transparence. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 123-123.
https://hdl.handle.net/21.15107/rcub_vinar_11819

Nešić M, Popović M, Galović S, Miletić V, Kostić L. The analysis of the influence of optical absorbance on photothermally induced surface temperature variations in a thin sample of high optical transparence. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:123-123.
https://hdl.handle.net/21.15107/rcub_vinar_11819 .

Nešić, M., Popović, M., Galović, Slobodanka, Miletić, V., Kostić, Lj., "The analysis of the influence of optical absorbance on photothermally induced surface temperature variations in a thin sample of high optical transparence" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):123-123,
https://hdl.handle.net/21.15107/rcub_vinar_11819 .

TY  - JOUR
AU  - Nešić, Mioljub V.
AU  - Popović, Marica N.
AU  - Galović, Slobodanka
AU  - Đorđević, Katarina Lj.
AU  - Jordović-Pavlović, Miroslava I.
AU  - Miletić, V. V.
AU  - Markushev, Dragan D.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11558
AB  - In this paper, a self-consistent inverse procedure is developed for the estimation of linear thermal expansion coefficient and thermal diffusivity of solids from transmission photoacoustic measurement. This procedure consists of two single-parameter fitting processes applied alternately: phase data are fitted by shifting thermal diffusion coefficient, while amplitude data are fitted by shifting thermal expansion coefficient. Each fitting process uses the resulting parameter of the other, previously finished one, thus converging to the best solution-pair achievable. In numerical experiments, the convergence proves to be very fast. The achieved parameter estimation error is as low as 1%, and it can be lowered further more by increasing the fitting resolution in parameter space. The application of the procedure on experimentally obtained aluminum photoacoustic response (measurements) on three thickness levels returns the estimates of its thermal diffusion and thermal expansion coefficients within expected literature boundaries.
T2  - Journal of Applied Physics
T1  - Estimation of linear expansion coefficient and thermal diffusivity by photoacoustic numerical self-consistent procedure
VL  - 131
IS  - 10
SP  - 105104
DO  - 10.1063/5.0075979
ER  - 

@article{
author = "Nešić, Mioljub V. and Popović, Marica N. and Galović, Slobodanka and Đorđević, Katarina Lj. and Jordović-Pavlović, Miroslava I. and Miletić, V. V. and Markushev, Dragan D.",
year = "2022",
abstract = "In this paper, a self-consistent inverse procedure is developed for the estimation of linear thermal expansion coefficient and thermal diffusivity of solids from transmission photoacoustic measurement. This procedure consists of two single-parameter fitting processes applied alternately: phase data are fitted by shifting thermal diffusion coefficient, while amplitude data are fitted by shifting thermal expansion coefficient. Each fitting process uses the resulting parameter of the other, previously finished one, thus converging to the best solution-pair achievable. In numerical experiments, the convergence proves to be very fast. The achieved parameter estimation error is as low as 1%, and it can be lowered further more by increasing the fitting resolution in parameter space. The application of the procedure on experimentally obtained aluminum photoacoustic response (measurements) on three thickness levels returns the estimates of its thermal diffusion and thermal expansion coefficients within expected literature boundaries.",
journal = "Journal of Applied Physics",
title = "Estimation of linear expansion coefficient and thermal diffusivity by photoacoustic numerical self-consistent procedure",
volume = "131",
number = "10",
pages = "105104",
doi = "10.1063/5.0075979"
}

Nešić, M. V., Popović, M. N., Galović, S., Đorđević, K. Lj., Jordović-Pavlović, M. I., Miletić, V. V.,& Markushev, D. D.. (2022). Estimation of linear expansion coefficient and thermal diffusivity by photoacoustic numerical self-consistent procedure. in Journal of Applied Physics, 131(10), 105104.
https://doi.org/10.1063/5.0075979

Nešić MV, Popović MN, Galović S, Đorđević KL, Jordović-Pavlović MI, Miletić VV, Markushev DD. Estimation of linear expansion coefficient and thermal diffusivity by photoacoustic numerical self-consistent procedure. in Journal of Applied Physics. 2022;131(10):105104.
doi:10.1063/5.0075979 .

Nešić, Mioljub V., Popović, Marica N., Galović, Slobodanka, Đorđević, Katarina Lj., Jordović-Pavlović, Miroslava I., Miletić, V. V., Markushev, Dragan D., "Estimation of linear expansion coefficient and thermal diffusivity by photoacoustic numerical self-consistent procedure" in Journal of Applied Physics, 131, no. 10 (2022):105104,
https://doi.org/10.1063/5.0075979 . .