標題: DISCONTINUOUS RADIAL TO AXIAL TRANSFORMATION OF DIRECTOR CONFIGURATION IN A CYLINDRICAL NEMATIC CAVITY
作者: LIANG, BJ
CHEN, SH
交大名義發表
電子物理學系
National Chiao Tung University
Department of Electrophysics
關鍵字: NEMATIC LIQUID CRYSTAL;ANNULAR PHENOMENON;CLOSED CYLINDRICAL CAVITY;POINT DEFECT;DISCLINATION RING;THE WIDTH OF THE BRIGHT ANNULUS;CHARACTERISTIC LENGTH;ELASTIC CONTINUUM THEORY
公開日期: 15-Nov-1991
摘要: The optical patterns of a nematic liquid crystal confined to a closed cylindrical cavity are observed through crossed polarizers. This optical pattern exhibits an annular phenomenon when the radius of the cylinder is varied. The minor dependence of the width of the bright annulus on the radius of the cavity is presented. The formation of the disclination ring is numerically studied and found to be the physical mechanism of the annular phenomenon. The characteristic length defined as the distance from the ring defect to the laterally cylindrical boundary is nearly invariant and is characterized to be the width of the bright annulus.
URI: http://hdl.handle.net/11536/3635
ISSN: 0021-4922
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume: 30
Issue: 11B
起始頁: L1955
結束頁: L1958
Appears in Collections:Articles