Journal ArticleDOI
Subsurface Layer Detection by Fourier Transform Infrared Photoacoustic Spectroscopy
N. Teramae,Shigeyuki Tanaka +1 more
Reads0
Chats0
TLDR
Fourier transform infrared photoacoustic spectroscopy was applied to the nondestructive detection of subsurface layer of bilayered films in this paper, which was carried out by the application of the subtraction technique to the photo-acoustic amplitude spectra of bilayers whose top layer has various values in thickness.Abstract:
Fourier transform infrared photoacoustic spectroscopy was applied to the nondestructive detection of subsurface layer of bilayered films Spectral separation of the subsurface layer was carried out by the application of the subtraction technique to the photoacoustic amplitude spectra of bilayered films whose top layer has various values in thickness As a result, it was found that the spectrum corresponding to the subsurface layer could be separated, and that the photoacoustic depth profiling was possible as far as the depth, which is approximately half the value of the thermal diffusion lengthread more
Citations
More filters
Journal ArticleDOI
Study of Colombian coals using photoacoustic Fourier transform infrared spectroscopy
TL;DR: In this article, five Colombian coal samples were studied using Photoacoustic Fourier transform infrared (PA-FTIR) spectroscopy to obtain structural parameters and to determine analytical potential of this technique.
Journal ArticleDOI
Near-Surface Analysis and Depth Profiling by FT-IR Photoacoustic Spectroscopy:
TL;DR: In this paper, Fourier transform photoacoustic spectroscopy (FT-IR/PAS) has proven to be a powerful technique for the near-surface characterization of solid materials.
Journal ArticleDOI
Depth Profiling of Polymer Surfaces with FT-IR Spectroscopy
TL;DR: The composition and structure of polymeric materials can vary with depth as a result of surface treatments, surface-specific processing variables, or thermodynamic forces active at the surface.
Journal ArticleDOI
Fourier Transform Photoacoustic Spectroscopy of Polymers
TL;DR: In the invisible part beyond the red, where the eye is useless, the ear is invaluable as discussed by the authors, and the ear cannot for one moment compete with the eye in the examination of the visible part of the spectrum.
Journal ArticleDOI
Depth Profiling and Signal Saturation in Photoacoustic FT-IR Spectra Measured with a Step-Scan Interferometer
TL;DR: In this paper, a commercial step-scan FT-IR spectrometer has been used to obtain photoacoustic spectra of carbon black, coals, polymers, and clays.
References
More filters
Journal ArticleDOI
Theory of the photoacoustic effect with solids
Allan Rosencwaig,Allen Gersho +1 more
TL;DR: In this article, a quantitative derivation for the acoustic signal in a photoacoustic cell in terms of the optical, thermal, and geometric parameters of the system is presented. And the theory predicts the dependence of the signal on the absorption coefficient of the solid, thereby giving a theoretical foundation for the technique of photoacoustical spectroscopy.
Book
Photoacoustics and Photoacoustic Spectroscopy
TL;DR: The recognized leader in the modern development of the field presents both theory and applications as mentioned in this paper, and provides a comprehensive survey of applications, from spectroscopy and chemistry analysis to medical applications and thermal analysis.
Journal ArticleDOI
Size considerations in the design of cells for photoacoustic spectroscopy
TL;DR: In this article, the dependence of photoacoustic spectrometer sensitivity on the physical dimensions of the sample cell was investigated for sizes larger than and smaller than the gas thermal diffusion length.
Journal ArticleDOI
Heterogeneous catalysis on the molecular scale
TL;DR: In this article, a new instrument has been developed for the combined determination of the kinetic parameters of catalytic surface reactions at high pressures (atmospheres), and for surface characterization at low pressures (approx. 10/sup -9/ torr) by using small area (approximately 1 cm/sup 2/) model catalysts.
Related Papers (5)
Depth-Profiling Studies of Double-Layer PVF2-on-PET Films by Fourier Transform Infrared Photoacoustic Spectroscopy:
Marek W. Urban,Jack L. Koenig +1 more