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Proceedings Paper

Diffuse reflectance of sintered and pressed polytetrafluoroethylene (PTFE)
Author(s): Patricia Yvonne Barnes; Edward A. Early
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Paper Abstract

Polytetrafluoroethylene (PTFE) is widely used in applications requiring a material with a diffuse reflectance factor close to unity. The bidirectional reflectance distribution function (BRDF) of both pressed and sintered samples was measured as a function of wavelength, polarization, and incident and viewing angles. The results for both samples show that the BRDF is constant at wavelengths from 400 nm to 1000 nm and depends on the polarization of the incident beam of radiant flux, that the BRDF varies with viewing angle, and that Helmholtz reciprocity holds for angles from 10 degrees to 60 degrees.

Paper Details

Date Published: 30 October 1998
PDF: 5 pages
Proc. SPIE 3426, Scattering and Surface Roughness II, (30 October 1998); doi: 10.1117/12.328454
Show Author Affiliations
Patricia Yvonne Barnes, National Institute of Standards and Technology (United States)
Edward A. Early, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 3426:
Scattering and Surface Roughness II
Zu-Han Gu; Alexei A. Maradudin, Editor(s)

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