Dynamics of collective and molecular modes of a ferroelectric liquid crystal in confined geometry using dielectric spectroscopy

被引:44
作者
Xu, H
Vij, JK
Rappaport, A
Clark, NA
机构
[1] UNIV DUBLIN TRINITY COLL,SCH ENGN,DUBLIN 2,IRELAND
[2] UNIV COLORADO,DEPT PHYS,CONDENSED MATTER LAB,BOULDER,CO 80309
关键词
D O I
10.1103/PhysRevLett.79.249
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Two aerogel systems containing a ferroelectric liquid crystal (FLC) with smectic phases over a wider temperature range are investigated using dielectric spectroscopy. The second order transition from Sm-A to Sm-C* is considerably broadened and the collective modes are detected for the FLC confined in aerogel pores. An additional relaxation process (AP) seen in these confined systems arises from the interface layer, the relaxation strength of AP decreasing and of the Goldstone mode gradually increasing as temperature is lowered.
引用
收藏
页码:249 / 252
页数:4
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