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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 17, Iss. 19 — Oct. 1, 1978
  • pp: 3051–3053

Thermal emissivity of semitransparent and opaque films of cholesteric liquid crystal

Nobuya Tamura and Seiji Takata  »View Author Affiliations


Applied Optics, Vol. 17, Issue 19, pp. 3051-3053 (1978)
http://dx.doi.org/10.1364/AO.17.003051


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Abstract

Thermal emissivity of cholesteric liquid crystal films is measured as a function of the film thickness d. increases from 0.2 to 0.4 in parallel with the increase of d from 13 μm to 33 μm and arrives at a constant value as high as 0.87 in the case of d ~ 1 mm. Reflectance at the air-to-liquid crystal interface and the absorption coefficient of the liquid crystal layer are found to be 0.130 and 7.24 × 10−3μm−1, respectively. The dependency of on d is interpretable on the basis of McMahon’s theory of radiant characteristics of semitransparent radiators.

© 1978 Optical Society of America

History
Original Manuscript: January 10, 1978
Published: October 1, 1978

Citation
Nobuya Tamura and Seiji Takata, "Thermal emissivity of semitransparent and opaque films of cholesteric liquid crystal," Appl. Opt. 17, 3051-3053 (1978)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-17-19-3051

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