Journal ArticleDOI
Photoacoustic Spectroscopy Theory for Multi-Layered Samples and Interference Effect
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TLDR
In this paper, the Rosencwaig-Gersho theory of photoacoustic spectroscopy has been expanded into the two-layer model and the photo-acoustic signal in the multi-layer models has been deduced from its approximations in special cases.Abstract:
The Rosencwaig-Gersho theory of photoacoustic spectroscopy has been expanded into the two-layer model and the photoacoustic signal in the multi-layer model has been deduced from its approximations in special cases. Furthermore, the photoacoustic signal is discussed considering multi-reflection of the light in a sample. This calculation accounts for the interference effect on photoacoustic signals. As an example, the interference theory was applied to a sample of silicon on sapphire (SOS), which showed considerable effect of interference.read more
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Journal ArticleDOI
The structure and properties of nanosize crystalline silicon films
TL;DR: In this paper, the structure and physical properties of nanosize crystalline silicon films were studied by means of high-resolution electron microscopy, Raman scattering spectra, x-ray diffraction pattern, IR transmission spectra and ultraviolet ray analysis.
Journal ArticleDOI
Generalized theory of the photoacoustic effect in a multilayer material
TL;DR: In this paper, a generalized expression of the photoacoustic effect in a multilayer material is derived, which takes thermal and optical properties and geometry of a multi-layer structure, as well as the thermal contact resistances between layers into consideration.
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Investigation of Time-Dependent Phenomena by Use of Step-Scan FT-IR
TL;DR: In this article, the authors present a survey of step-scan interferometry instrumentation for dynamic vibrational spectroscopy in the time regime from tens of nanoseconds to tens of milliseconds.
Journal ArticleDOI
Photo-acoustic measurement of thermal conductivity of thin films and bulk materials
TL;DR: In this article, a general analytical expression is developed, which relates the photoacoustic signal with the thermal properties, optical properties, and thermal contact resistance of a multi-layer system.