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Nematic Configuration in Submicron Cylindrical Cavities: 2H NMR Study

  • G. Crawford
  • M. Vilfan
  • I. Vilfan
  • J. W. Doane
Conference paper

Abstract

We present the first experimental study of nematic molecular configuration in cylindrical cavities of submicron size. 2H NMR spectra unambiguously show that the liquid crystal molecules are attached perpendicular to the polycarbonate cylinder walls but change their orientation towards the centre of the cylinder to align parallel to the cylinder axis there. This “escape effect” has been predicted years ago by Cladis and Kleman [J. Physique 33, 591 (1972)]. The 2H NMR spectra of confined liquid crystal allow us to obtain the value of the translational diffusion constant and the density of domain walls between oppositely oriented domains.

PACS numbers

76.00 61.30 

References

  1. 1.
    P.E. Cladis and M. Kleman, J. Physique 33, 591 (1972).CrossRefGoogle Scholar
  2. 2.
    P.G. de Gennes. The Physics of Liquid Crystals. Clarendon Press, Oxford (1974).Google Scholar
  3. 3.
    A. Golemme, S. Žumer, D.W. Allehder, and J.W. Doane, Phys. Rev. Lett. 61, 2937 (1988).ADSCrossRefGoogle Scholar
  4. 4.
    I. Vilfan, M. Vilfan, and S. Žumer, Phys. Rev. A 40, 4724 (1989).ADSCrossRefGoogle Scholar
  5. 5.
    I. Vilfan, M. Vilfan, and S. Žumer, to be published.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • G. Crawford
    • 1
  • M. Vilfan
    • 1
    • 2
  • I. Vilfan
    • 2
  • J. W. Doane
    • 1
  1. 1.Liquid Crystal InstituteKent State UniversityKentUSA
  2. 2.J. Stefan InstituteUniversity of LjubljanaLjubljanaYugoslavia

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