Optical Bistability of the Director Field of the Dendrimer-Doped Nematic Liquid Crystal

被引：4

作者：

Babayan, E. A.

Budagovsky, I. A.

Zolot'ko, A. S.

Smayev, M. P.

Shvetsov, S. A.

Boiko, N. I. ^{[1
]}

Barnik, M. I. ^{[2
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119899, Russia

[2] Russian Acad Sci, Shubnikov Inst Crystallog, Moscow 119333, Russia

来源：

BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2010年 / 37卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

liquid crystals; light-induced orientation; phase transitions; optical bistability; FREEDERICKSZ TRANSITION; LIGHT; NONLINEARITY; ORIENTATION; FILM;

D O I：

10.3103/S1068335610080063

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It was found that the second-generation carbosilane dendrimers with statistically distributed terminal aliphatic and azobenzene fragments induce negative orientational nonlinearity in nematic liquid crystals (NLC) (the NLC director turns perpendicular to the light field, decreasing the refractive index of an extraordinary wave). The light-induced Freedericksz transition in planar oriented NLCs is the first-order orientational phase transition characterized by a wide bistability region.

引用

页码：257 / 261

页数：5

共 15 条

[11]

Zolot'ko A.S., 1981, SOV PHYS JETP, V54, P496

[12] On the mechanism of light-induced orientation of molecules in absorbing nematic liquid crystals [J].