Thermal wave imaging of optically thin films utilising the photoacoustic effect
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 107 (1276) , 798-802
- https://doi.org/10.1039/an9820700798
Abstract
A simple laser scanning system to permit thermal wave imaging of optically thin films by photoacoustic spectrometry is described. The application of this assembly to the examination of surface and subsurface features of laminated films of 6–70 µm thickness is reported.Keywords
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