The piezoelectric photoacoustics application possibility for polycrystalline structure formation has been considered. The accent was on research and transient modeling with pulse laser irradiation. A mathematical model for the given setup with a single laser impulse was developed. The results of mathematical modeling were experimentally tested on cement samples.
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http://dx.doi.org/10.1364/AO.53.00B159 | DOI Listing |
Heliyon
January 2025
Center for MicroElectromechanical Systems (CMEMS), University of Minho, Guimarães, 4800-058, Portugal.
Recently, Organ-on-a-Chip (OoC) platforms have arisen as an increasingly relevant experimental tool for successfully replicating human physiology and disease. However, there is a lack of a standard technology to monitor the OoC parameters, especially in a non-invasive and label-free way. Photoacoustic (PA) systems can be considered an alternative and accurate assessment method for OoC platforms.
View Article and Find Full Text PDFACS Photonics
December 2024
Department of Applied Physics, University of Barcelona, 08028 Barcelona, Spain.
The delivery of light over an extended area within a sample forms the basis of biomedical applications that are as relevant as photoacoustic tomography, fluorescence imaging, and phototherapy techniques. However, light scattering limits the ability of these methods to reach deep regions within biological tissues. As a result, their operational range remains confined to superficial areas of samples, posing a significant barrier to effective optical treatment and diagnosis.
View Article and Find Full Text PDFNat Commun
December 2024
Electronic Materials Research Laboratory, Key Lab of Education Ministry and State Key Laboratory for Mechanical Behavior of Materials, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, China.
ACS Appl Mater Interfaces
December 2024
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People's Republic of China.
The photoacoustic effect (PAE) of weak microsecond pulsed light (WMPL) has immense potential for application to biomedical engineering. However, practical measurements and theoretical analysis of the photoacoustic pressure of WMPL are lacking. Hence, we constructed a WMPL photoacoustic pressure measurement system using an electret piezoelectric sensor and multi-wavelength parameter-adjustable pulsed light generator.
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