Detection of sub-terahertz photoacoustic effect for non-contact material sensing

Detection of sub-terahertz photoacoustic effect for non-contact material sensing

We demonstrate the generation of photoacoustic signals in aqueous samples by continuous sub-terahertz irradiation detectable with a standard microphone. We confirm that the frequency response of the photoacoustic signals is dependent on the sound speed in the sample, demonstrating its potential for...

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Bibliographic Details
Main Authors: Natsumi Ichikawa, Yasuaki Monnai
Format: Article
Language:English
Published: Elsevier 2021-12-01
Series:Measurement: Sensors
Subjects:
Photoacoustic effect
Sub-terahertz waves
Sound speed
Non-contact sensing
Online Access:http://www.sciencedirect.com/science/article/pii/S2665917421002026

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