Version 1
: Received: 15 May 2024 / Approved: 16 May 2024 / Online: 16 May 2024 (12:18:07 CEST)
How to cite:
Galovic, S. P.; Djordjevic, A.; Kovacevic, B.; Djordjevic, K.; Chevizovich, D. Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems. Preprints2024, 2024051105. https://doi.org/10.20944/preprints202405.1105.v1
Galovic, S. P.; Djordjevic, A.; Kovacevic, B.; Djordjevic, K.; Chevizovich, D. Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems. Preprints 2024, 2024051105. https://doi.org/10.20944/preprints202405.1105.v1
Galovic, S. P.; Djordjevic, A.; Kovacevic, B.; Djordjevic, K.; Chevizovich, D. Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems. Preprints2024, 2024051105. https://doi.org/10.20944/preprints202405.1105.v1
APA Style
Galovic, S. P., Djordjevic, A., Kovacevic, B., Djordjevic, K., & Chevizovich, D. (2024). Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems. Preprints. https://doi.org/10.20944/preprints202405.1105.v1
Chicago/Turabian Style
Galovic, S. P., Katarina Djordjevic and Dalibor Chevizovich. 2024 "Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems" Preprints. https://doi.org/10.20944/preprints202405.1105.v1
Abstract
In this paper, the time-resolved model of photoacoustic signal for samples with a complex inner structure is derived including local non-equilibrium of structural elements with multiple degrees of freedom, i.e. structural entropy of the system. The local non-equilibrium is taken into account through the fractional operator. By analyzing the model for two types of time-dependent excitation, a very short pulse and a very long pulse, it is shown that the rates of non-equilibrium relaxations in complex samples can be measured by applying the derived model and time-domain measurements. Limitations of the model and further directions of its development are discussed.
Keywords
heat transfer; irreversibility; local non-equilibrium; time delayed equation; fractional calculus; subdiffusion; Mittag-Leffler function; time-domain photoacoustic
Subject
Physical Sciences, Condensed Matter Physics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.