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Advances in Photothermal Techniques for Material Characterization and Sensor Development

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensor Materials".

Deadline for manuscript submissions: 31 January 2026 | Viewed by 491

Special Issue Editor


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Guest Editor
Laboratory of Environmental Research, University of Nova Gorica, Vipavska 13, 5000 Nova Gorica, Slovenia
Interests: photothermal sciences; laser-based detection methods; advanced material characterization; non-destructive testing and evaluation; photothermal spectrometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The constant development of photothermal techniques enables the advanced characterization of a wide range of functional materials and provides us with an in-depth understanding of the relationship between their properties and related processes, which further determine their functions and applications in different fields of modern technology. Thus, the aim of this Special Issue is to build a community of authors and readers to share new directions and discuss the latest research achievements in the field of photothermal sensor development for the characterization functional materials.

This Special Issue will cover the following topics:

Fundamentals of photothermics/photoacoustics and related phenomena—thermophysical properties, laser ultrasonics, surface waves, nanoscale phenomena, nanostructures, ultrafast phenomena, laser physics, thermophysics, bio- and nanophotonics.

Methodologies of photothermics/photoacoustics and related techniques—instrumentation and new techniques, measurement methodology and data processing, imaging, multispectral, and hyperspectral imaging, microscopy, spectroscopy, tomography, depth profiling, non-destructive testing and evaluation.

Material characterization—material science, analytical and physical chemistry, photochemistry, thermal analysis, thermophysical properties, electronic and phononic bandgap materials, low-dimensional systems, nanoscale phenomena and nanostructures.

Environmental, industrial, medical application of photothermics/photoacoustics and related phenomena—microfluidics application, earth-sciences applications, atmospheric monitoring, environmental, agriculture, and food applications, biomedical/industrial/environmental sensing cytometry, imaging, microspectroscopy, tomography, photothermal therapy, laser medicine, biotechnology bioengineering.

Dr. Dorota Korte
Guest Editor

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Keywords

  • photothermics
  • photoacoustics
  • laser physics
  • thermophysics
  • bio- and nanophotonics
  • material science
  • laser medicine
  • theranostics
  • thermal analysis
  • laser spectroscopy
  • laser ultrasonics
  • photothermal theoretical models

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Published Papers (1 paper)

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Research

26 pages, 3646 KiB  
Article
Application of Chelex-100 and SPR-IDA Resin in Combination with the Optimized Beam Deflection Spectrometry for High-Sensitivity Determination of Iron Species in Sediment Porewater
by Hanna Budasheva, Mohanachandran Nair Sindhu Swapna, Arne Bratkič and Dorota Korte
Sensors 2025, 25(12), 3643; https://doi.org/10.3390/s25123643 - 10 Jun 2025
Viewed by 307
Abstract
In this work, photothermal beam deflection spectrometry (BDS), combined with a passive sampling technique of diffusive gradients in thin film (DGT), is optimized to improve the method’s sensitivity. The limit of detection (LOD) is then reduced by a factor of 2 (to the [...] Read more.
In this work, photothermal beam deflection spectrometry (BDS), combined with a passive sampling technique of diffusive gradients in thin film (DGT), is optimized to improve the method’s sensitivity. The limit of detection (LOD) is then reduced by a factor of 2 (to the value of 20 nM). The functionality of the technique is compared for Chelex-100 (Ch-100) and suspended particulate reagent–iminodiacetate resin (SPR-IDA), used as binding resins in passive samplers. The absorption capacity of SPR-IDA resin is found to be less than 1 μM and far below that one of Chelex-100 resin (around 6 μM). The BDS technique is applied for determination of iron redox species concentration in sediment porewater. It is found that Fe in sediment porewater occurs both in Fe2+ (0.073 μM) and Fe3+ (0.095 μM) forms. The validation of the presented method reveals that the BDS technique ensures good repeatability, reproducibility, and reliability. Full article
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