Random Multiple Scattering Enhanced Photoacoustic Gas Spectroscopy with Disordered Porous Ceramics
Source abstract
Abstract
Light–gas interaction can be enhanced by using disordered porous materials because multiple random scattering increases light intensity near the surface of the material. Here we report signal enhancement of photoacoustic gas spectroscopy with disordered porous ceramics. The amplitude and frequency characteristics of photoacoustic signal due to gas absorption in disordered materials are modeled theoretically. Experiment with a porous Al2O3 sample demonstrates photoacoustic signal enhancement of ∼4 times at 5 kHz.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Photoacoustic and Ultrasonic Imaging · Random lasers and scattering media · Spectroscopy and Laser Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Photonic Sensors Research Center, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
Funding
University Grants Committee · National Natural Science Foundation of China · Hong Kong Polytechnic University
References (25)
Show source-provided references
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