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Structure Data from Light Scattering Studies of Aerogel

Published online by Cambridge University Press:  15 February 2011

Arlon J. Hunt and
Paul Berdahl
Arlon J. Hunt
Affiliation:
Lawrence Berkeley Laboratory University of California Berkeley, California 94720
Paul Berdahl
Affiliation:
Lawrence Berkeley Laboratory University of California Berkeley, California 94720
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Abstract

This paper reports a recent advance in the understanding of the structure of microporous optical materials such as aerogel through the interpretation of light scattering data. The Fourier transform of the densitydensity correlation function is used to relate measurements of the angular dependence of scattered light to material structure parameters. The results of the approach fit the unusual dependence of the intensity of scattered light as a function of angle for two polarizations. The fit shows that light scattering from aerogels may be interpreted as having two origins; one from the small scale structure of linked particles that comprise the material, and the second due to weak fluctuations in the average density of the microporous structure over distances significantly larger than the pore size.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 32: Symposium B – Better Ceramics Through Chemistry I , 1984, 275
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

1. Hunt, A. J., “Microporous Transparent Materials for Insulating Windows and Building Applications, Assessment Report,” Lawrence Berkeley Lab.report LBL-15306 (1982).CrossRefGoogle Scholar
2. Rubin, M. and Lambert, C., “Silica Aerogel for Transparent Insulation” Solar Energy Materials, 7 393–400, (1983).Google Scholar
3. “Light Scattering Studies of Silica Aerogel” Hunt, A. J., Proceedings of the Intern. Conf. on Ultrastructure Processing of Ceramics, Glasses, and Composites Gainesville, FL Feb 13–17, 1983.Google Scholar
4. Henning, S. and Svensson, L., “Production of Silica Aerogel” Physics Scripta 23 703,707 (1981).Google Scholar
5. Schmitt, W. J., Greiger-Block, R. A. and Chapman, T. W. “The Preparation and Properties of Acid-catalyzed Silica Aerogel,” Presented at the Annual Meeting of the AIChE, New Orleans (1981).Google Scholar
6. Debye, P. and Bueche, A.M., Scattering by an inhomogeneous solid, J. Appl. Phys. 20, 518–525 (1949).Google Scholar
7. Debye, P., Anderson, H. R. Jr., and Brumberger, H., “Scattering by an Inhomogeneous Solid. II. The Correlation Function and its Application,” J. Appl. Phys. 20 679–683 (1957).Google Scholar
8. Born, M. and Wolf, E., Principles of Optics, 4th Ed., (Pergamon Press, Oxford 1970), Section 13.5.2.Google Scholar
9. Kerker, X., The scattering of light, (Academic Press, N.Y. 1969) p. 475.Google Scholar