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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 20, Iss. 15 — Aug. 1, 1981
  • pp: 2643–2647

Nematic liquid crystals: interferometric determination of the elastic constant ratio KB/KS

F. Scudieri  »View Author Affiliations


Applied Optics, Vol. 20, Issue 15, pp. 2643-2647 (1981)
http://dx.doi.org/10.1364/AO.20.002643


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Abstract

An optical interference method has been developed to measure the distribution of the molecular director in an oriented cylindrical sample of nematic liquid crystal. The ratio of the elastic constants KB/KS can be obtained. Unlike other methods this one does not require independently measured quantities or the application of an external field. One interferogram is sufficient to determine refractive indexes and the elastic constant ratio. The hypothesis of strong anchoring can be tested directly.

© 1981 Optical Society of America

History
Original Manuscript: November 5, 1980
Published: August 1, 1981

Citation
F. Scudieri, "Nematic liquid crystals: interferometric determination of the elastic constant ratio KB/KS," Appl. Opt. 20, 2643-2647 (1981)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-15-2643


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References

  1. F. Scudieri, Appl. Opt. 9, 1455 (1979).
  2. For a general discussion, see P. G. de Gennes, Physics of Liquid Crystals (Oxford U.P., New York, 1975).
  3. F. C. Frank, Discuss. Faraday Soc. 25, 19 (1958).
  4. P. E. Cladis, M. Kleman, J. Phys. Paris 33, 591 (1972).
  5. F. T. Stone, Appl. Opt. 16, 2738 (1977).
  6. G. D. Kahl, D. C. Mylin, J. Opt. Soc. Am. 55, 364 (1965).

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