Phase shift of photoacoustic signals from microparticles in liquids
- 15 August 1985
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 58 (4) , 1456-1459
- https://doi.org/10.1063/1.336075
Abstract
The wave equation in which the source term is coupled with the thermal energy migration was analyzed, and the physical meaning of the phase of photoacoustic signals generated in turbid solutions was clarified. These theoretical results, partially verified by experiments, showed the possibility for novel thermal characterizations and size measurement methods of microparticles. The theoretical limitation of the size measurement was 102 Å for samples with nonradiative relaxation times of 1 nsec.This publication has 8 references indexed in Scilit:
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