Anomalous thermal diffusion in two-layer system: The temperature profile and photoacoustic signal for rear light incidence

A Somer, MN Popovic, GK da Cruz, A Novatski… - International Journal of …, 2022 - Elsevier
We analyze the influence of the generalizations of hyperbolic (Cattaneo) heat equations
(GCE) on temperature profile and photoacoustic signal for the two-layer samples. The GCE …

Experimental validation of formula for calculation thermal diffusivity in superlattices performed using a combination of two frequency-domain methods: Photothermal …

M Pawlak, T Kruck, N Spitzer, D Dziczek, A Ludwig… - Applied Sciences, 2021 - mdpi.com
In this paper, we validate two theoretical formula used to characterize thermal transport of
superlattices at different temperatures. These formulas are used to measure cross-plane …

Development and comparison of the techniques for solving the inverse problem in photoacoustic characterization of semiconductors

M Nesic, M Popovic, K Djordjevic, V Miletic… - Optical and Quantum …, 2021 - Springer
In this work, theoretically/mathematically simulated (TMS) model is presented for the
photoacoustic (PA) frequency response of a semiconductor in a minimum volume PA cell. By …

Photoacoustic Characterization of TiO2 Thin-Films Deposited on Silicon Substrate Using Neural Networks

KL Djordjević, DK Markushev, MN Popović, MV Nesić… - Materials, 2023 - mdpi.com
In this paper, the possibility of determining the thermal, elastic and geometric characteristics
of a thin TiO2 film deposited on a silicon substrate, with a thickness of 30 μm, in the …

Photothermal response for the thermoelastic bending effect considering dissipating effects by means of fractional dual-phase-lag theory

A Somer, A Novatski, MK Lenzi, LR da Silva… - Fractal and …, 2023 - mdpi.com
We analyze an extension of the dual-phase lag model of thermal diffusion theory to
accurately predict the contribution of thermoelastic bending (TE) to the Photoacoustic (PA) …

Photoacoustic Analysis of Illuminated Si-TiO2 Sample Bending Along the Heat-Flow Axes

SM Aleksić, DK Markushev, DD Markushev, DS Pantić… - Silicon, 2022 - Springer
This paper describes the influence of thin transparent film on thermal and elastic
characteristics of the two-layer sample consisting of the silicon substrate and thin TiO2 film …

Si plate radius influence on the photoacoustic signal processed by neural networks

КL Djordjevic, DK Markushev, SP Galović… - Journal of Applied …, 2022 - pubs.aip.org
The effect of the sample radius on the total photoacoustic signal processed by neural
networks trained with undistorted and distorted signals is carefully analyzed for modulation …

Thermal characterization of n-type silicon based on an electro-acoustic analogy

N Stanojevic, DK Markushev, SM Aleksić… - Journal of Applied …, 2023 - pubs.aip.org
Based on the analogy between resistor–capacitor (RC) filters and the thermoelastic
component of a photoacoustic signal, the complex thermoelastic response of an open …

Thermal fractional diffusion: experimental evidence from the discrepancies in the amplitude and phase in photothermal technique

A Somer, A Novatski, GK da Cruz, CBK da Cruz… - Nonlinear …, 2023 - Springer
Obtaining thermal parameters based in the analysis only on the amplitude or phase of the
photoacoustic (PA) signal from photothermal measurements is useful and valid once …

The Influence of Excess Free Carriers as Heat Carriers on the n-Type Silicon Thermoelastic Photoacoustic Responses Explained by Electro-Acoustic Analogies

DK Markushev, N Branković, SM Aleksić… - International Journal of …, 2024 - Springer
The explanation of the n-type silicon thermoelastic photoacoustic response is given by
electro-acoustic analogies, which clarify the influence of excess free carriers as heat …