標題: STABILITY OF AN UMBILICAL DIRECTOR FIELD OF NEMATIC LIQUID-CRYSTAL IN A CLOSED CONICAL CAVITY
作者: WEI, JG
CHEN, SH
交大名義發表
光電工程學系
National Chiao Tung University
Department of Photonics
關鍵字: NEMATIC LIQUID CRYSTAL;STABILITY;DIRECTOR FIELD;CLOSED CAVITY;UMBILIC;POINCARE;DISCLINATION;CONTINUUM THEORY
公開日期: 1-May-1994
摘要: This letter studies the stability of a single umbilical director field of nematic liquid crystal (NLC) in a closed cavity with external electric field. To form the single umbilic structure, we filled NLC with negative dielectric anisotropy in a closed conical cavity and made molecules align perpendicular to the cavity wall. Electric field was applied along the symmetry axis of the cavity. Using the continuum theory, we show that an umbilical director field will transform to a director field of a hyperbolic singular point with disclination ring instead of a Poincare structure at a critical voltage.
URI: http://dx.doi.org/10.1143/JJAP.33.L660
http://hdl.handle.net/11536/2520
ISSN: 0021-4922
DOI: 10.1143/JJAP.33.L660
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume: 33
Issue: 5A
起始頁: L660
結束頁: L662
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  1. A1994NL95700012.pdf