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Advances in Photoacoustic and Photothermal Phenomena

A special issue of Applied Sciences (ISSN 2076-3417).

Deadline for manuscript submissions: 20 August 2025 | Viewed by 563

Special Issue Editors


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Guest Editor
Center for Advanced Studies in Bio-photothermal and Optical Glass Science and Technology, Department of Physics, State University of Maringá, Maringá 87020-900, PR, Brazil
Interests: photothermal and photoacoustic in biological and healthcare science; biomaterials; optical glasses for smart white lighting; laser sources and solar energy devices; optical and spectroscopy properties of advanced functional materials in multidisciplinary studies

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Guest Editor
Department of Optodynamics and Laser Technology, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva Ulica 6, 1000 Ljubljana, Slovenia
Interests: photoacoustic materials; low-dimensional materials; laser ultrasound; photophysics; photoacoustic therapy; medical laser applications

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Guest Editor
Department of Chemistry, Coimbra Chemistry Centre, Institute of Molecular Sciences (CQC-IMS), University of Coimbra, Rua Larga s/n, Coimbra 3004-535, Portugal
Interests: virus-host interactions; photo-responsive compounds; photodynamic therapy; biophysical analysis; spectroscopy; high-throughput screening
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photoacoustic and photothermal effects are related phenomena that involve the absorption of light by a material and its subsequent conversion into other forms of energy. The first one involves the generation of acoustic waves as a result of light absorption and rapid thermal expansion, while the last one involves the conversion of absorbed light into heat. Both are powerful tools that leverage the interaction between light and matter to provide insights and therapeutic benefits across various fields, including biomedical imaging, therapy, environmental monitoring, and materials science.

To achieve an up-to-date point of view of photoacoustic and photothermal applications, this Special Issue is focused on the recent scientific and technical advances made in this field based on (but not limited to) the 22nd International Conference on Photoacoustic and Photothermal Phenomena. Based on your extensive knowledge and experience, we are pleased to invite you to contribute original research articles to promote and highlight the excitement and importance of photo-phenomena through the interdisciplinary aspects involving clinical and animal imaging, biosensing, theranostic and contrast agents, non-destructive methods, laser ultrasonics, infrared thermography, photoinduced processes, nanoscale phenomena, photonics and diffusion waves, and machine learning. Review articles are also welcome, especially those describing topics related to trends and challenges in the frontiers of photoacoustic and photothermal applied to biomedicine, materials, chemistry, earth, industry, and analytical chemistry.

Dr. Mauro Luciano Baesso
Dr. Daniele Vella
Dr. Carlos Serpa
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photoacoustic and photothermal phenomena in biological and healthcare science
  • super-resolution imaging
  • ultrafast phenomena
  • thermophysical properties
  • novel methodologies, instrumentations and applications
  • data processing and inverse problems
  • extreme pulsed pressures
  • advances in thermoplasmonics
  • semiconductors, electronic and photonic bandgap materials

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Published Papers (1 paper)

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Research

23 pages, 1184 KiB  
Article
Time-Resolved Photoacoustic Response of Thin Semiconductors Measured with Minimal Volume Cell: Influence of Photoinduced Charge Carriers
by Slobodanka P. Galovic, Dragana K. Markushev, Dragan D. Markushev, Katarina Lj. Djordjevic, Marica N. Popovic, Edin Suljovrujic and Dragan M. Todorovic
Appl. Sci. 2025, 15(13), 7290; https://doi.org/10.3390/app15137290 - 28 Jun 2025
Viewed by 70
Abstract
When a semiconducting sample is illuminated by an intensity-modulated monochromatic light beam with photon energy exceeding the band gap, part of the absorbed energy is directly converted into heat through photon–lattice interactions. This gives rise to a heat source that closely follows the [...] Read more.
When a semiconducting sample is illuminated by an intensity-modulated monochromatic light beam with photon energy exceeding the band gap, part of the absorbed energy is directly converted into heat through photon–lattice interactions. This gives rise to a heat source that closely follows the temporal profile of the optical excitation, known as the fast heat source. Simultaneously, another portion of the absorbed energy is used to generate electron-hole pairs. These charge carriers diffuse together and recombine via electron–electron and electron–hole interactions, transferring their kinetic energy to the lattice and producing additional heating of the sample. This indirect heating mechanism, associated with carrier recombination, is referred to as the slow heat source. In this study, we develop a model describing surface temperature variations on the non-illuminated side of a thermally thin semiconductor exposed to a rectangular optical pulse, explicitly accounting for the contribution of surface charge carrier recombinations. Using this model, we investigate the influence of surface recombination velocity and the material’s plasma properties on the time-domain temperature response for both plasma-opaque and plasma-transparent samples. Our results demonstrate that charge carrier recombinations can significantly affect the transient photoacoustic signal recorded using a minimum volume cell, highlighting the potential of time-resolved photoacoustic techniques for probing the electronic properties of semiconductors. Full article
(This article belongs to the Special Issue Advances in Photoacoustic and Photothermal Phenomena)
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