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Photoacoustic spectroscopy with condensed samples
Applied Optics, 1976A discussion of the photoacoustic spectroscopy of condensed matter is presented with emphasis on the role of the sample and the sample cell in the photoacoustic signal waveform. The spectrometer and sample cell are described, and an experimental evaluation of the system performance is given.
J F, McClelland, R N, Kniseley
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Photoacoustic spectroscopy of solids
The Journal of the Acoustical Society of America, 1973There are a great many substances, both organic and inorganic, that, because of their physical state, cannot be readily studied by conventional absorption or reflection techniques. In photoacoustic spectroscopy, light absorbed by the sample is converted into a measurable acoustic signal, and spectra closely corresponding to optical absorption spectra ...
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Dermatological photoacoustic spectroscopy
1981Photoacoustic spectroscopy, a new and developing technique, has generated considerable interest as a spectroscopic tool for the studying of solid, semisolid and biological samples. This technique allows the depth profiles of both the optical and thermal properties of skin to be determined in cases where other techniques can be applied only with ...
E. Pines, T. Cunningham
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High-sensitivity surface-photoacoustic spectroscopy
Optics Letters, 1990The sensitivity of surface-acoustic-wave detection is extended by several orders of magnitude to a surface-specific absorbance of alphal ~ 10(-9) for a power density of 1 GW/cm(2) using a narrow-bandwidth interdigitated surface-acousticwave detector and an optical irradiation pattern to provide a matched acoustic signal. Major advantages include narrow-
M Y, Raja +4 more
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Photoacoustic X-Ray Absorption Spectroscopy
1988When materials are irradiated by X-rays, several effects occur, e. g. absorption, scattering, fluorescence, and electron release, as seen in Fig. 1. Heat generation should also be observed on absorption of electromagnetic waves even for the X-ray absorption process.
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Photoacoustic Spectroscopy of Condensed Matter
Angewandte Chemie International Edition in English, 1978AbstractPhotoacoustic spectroscopy is a new analytical tool that provides a simple nondestructive technique for obtaining information about the electronic absorption sprctrum of samples such as powders, semisolids, gels, and liquids. It can also be applied to samples which cannot be examined by conventional optical methods.
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Photoacoustic spectroscopy for process analysis
Analytical and Bioanalytical Chemistry, 2005Photoacoustic spectroscopy (PAS) is based on the absorption of electromagnetic radiation by analyte molecules. The absorbed energy is measured by detecting pressure fluctuations in the form of sound waves or shock pulses. In contrast to conventional absorption spectroscopy (such as UV/Vis spectroscopy), PAS allows the determination of absorption ...
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