Advances in photothermal and photoacoustic metrology

Anufriev, Roman; Glorieux, Christ; Diebold, Gerald J.

doi:10.1063/5.0039077

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…Also, the photoacoustic (PA) method has growing applications in medical imaging, photochemistry, chemical reactions dynamics, interface ultrasonic waves, studies of nonequilibrium transport of heated electrons in metals, investigation of semiconductors properties, noncontact characterization, generation of acoustic solitons in crystals, soft matter research, etc. [6]. In investigations of solid and liquid samples, it has demonstrated advantages over traditional conventional spectroscopy, particularly for weakly absorbing, strongly scattering, opaque samples, diffusing samples, thin films, or multilayered structures.…”

Section: Introductionmentioning

confidence: 99%

Artificial Intelligence Application in Photoacoustic of Gases

Lukić,

Ćojbašić,

Markushev

2023

FU Work Liv Env Prot

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Photoacoustic spectroscopy is a powerful, non-destructive, ultrasensitive technique that covers a wide range of applications including atmospheric monitoring, industrial, environmental, and biomedical practice. In this paper, our attention is focused on the area of artificial intelligence implementation in photoacoustic spectroscopy of gases. Artificial intelligence has been proven as a very successful, effective, and promising method for the accurate and real-time determination of photoacoustic signal parameters, related to relaxation, thermal and other physical properties of various media (i.e., for solving the inverse photoacoustic problem). To improve the sensitivity and selectivity of the photoacoustic method feedforward multilayer perceptron network is applied for real-time simultaneous determination of photoacoustic signal parameters: vibrational-to-translational relaxation time, and radius of the laser beam. Also, to solve the problem of finding optimal values of these photoacoustic parameters, metaheuristic algorithms, genetic algorithms and simulated annealing are used. The performance of artificial intelligence methods has been tested on a set of experimental signals generated in the (SF6+Ar) gas. The potential advantages and disadvantages of those methods are discussed.

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Section: Introductionmentioning

confidence: 99%

Artificial Intelligence Application in Photoacoustic of Gases

Lukić,

Ćojbašić,

Markushev

2023

FU Work Liv Env Prot

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Ballistic heat conduction in semiconductor nanowires

Anufriev

Nomura

2021

Journal of Applied Physics

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Ballistic thermal transport is a remarkable nanoscale phenomenon with possible applications in microelectronics. In the past decade, research on ballistic thermal transport focused on the measurements of length-dependent thermal conductivity in semiconductor nanowires. In this Perspective article, we review the experimental demonstrations of this phenomenon in nanowires of various materials and sizes and at different temperatures. Our literature analysis reveals a controversy between works reporting two distinct pictures of ballistic conduction: perfectly ballistic conduction even at room temperature and weak quasi-ballistic conduction mainly below room temperature. Simulations seem to support the weaker version of the effect. Thus, future experiments are expected to resolve this controversy.

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Photothermal radiometry methods in materials science and applied chemical research

Fomina

Проскурнин

2022

Journal of Applied Physics

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In this Review, the main techniques of the photothermal radiometry family with their varieties (modulated and pulsed photothermal radiometry and infrared photocarrier radiometry) and related methods (infrared thermography) are considered from the viewpoints of their specific features and application in chemical research and related disciplines. The basics of the methods and their technical implementation are briefly described. The focus of the paper is to examine the possibilities of photothermal radiometry methods—as techniques combining molecular spectroscopy and thermal characterization—physical and analytical chemistry, materials sciences, and biomedical research. The Review discusses the techniques of photothermal radiometry that find their applications in the various fields of the materials science like investigation of the thermal and structural properties of materials, defectoscopy, and dynamics of thermal processes. It also discusses the techniques that are used in the applied chemical research, in the evaluation of the optical properties at molecular or substance levels and the assessment of various substances including biomaterials. The outlooks of the further development in this area are briefly discussed.

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Advances in photothermal and photoacoustic metrology

Cited by 5 publications

References 35 publications

Artificial Intelligence Application in Photoacoustic of Gases

Artificial Intelligence Application in Photoacoustic of Gases

Ballistic heat conduction in semiconductor nanowires

Photothermal radiometry methods in materials science and applied chemical research

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