A NEW METHOD FOR MEASURING THE AZIMUTHAL ANCHORING ENERGY OF A NEMATIC LIQUID-CRYSTAL

被引：58

作者：

IIMURA, Y

KOBAYASHI, N

KOBAYASHI, S

机构：

[1] Tokyo University of Agriculture and Technology, Koganei, Tokyo

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1994年 / 33卷 / 3B期

关键词：

LIQUID CRYSTAL; TWIST ANGLE; AZIMUTHAL ANCHORING ENERGY;

D O I：

10.1143/JJAP.33.L434

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have proposed a new optical method for measuring the twist angle of twisted nematic cells, and the method has been applied to obtain the azimuthal anchoring energy for a nematic liquid crystal. The method is based on a modulation in the polarization state of an incident probing laser beam to the sample cells, and the resulting transmitted intensity of the beam is theoretically analyzed through the 2 x 2 Jones matrix method. The obtained anchoring energy for the azimuthal distortion is about 1.5 x 10(-5) J/m2 for a polyvinylalcohol alignment film; which is about two orders of magnitude lower than that for the corresponding polar anchoring energy.

引用

页码：L434 / L436

页数：3

共 7 条

[1]

ALLIA P, 1988, PHYSICS LIQUID CRYST, V2, P337

[2]

BUNNING JD, 1979, J PHYS PARIS C, V40, pC3

[3] ALMOST CRITICAL-BEHAVIOR OF THE ANCHORING ENERGY AT THE INTERFACE BETWEEN A NEMATIC LIQUID-CRYSTAL AND A SIO SUBSTRATE [J].