CALORIMETRIC STUDY OF CHIRAL LIQUID-CRYSTALS WITH A TWIST-GRAIN-BOUNDARY PHASE

被引：29

作者：

CHAN, T ^{[1
]}

GARLAND, CW ^{[1
]}

NGUYEN, HT ^{[1
]}

机构：

[1] MIT,CTR MAT SCI & ENGN,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW E | 1995年 / 52卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.52.5000

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

High-resolution calorimetry has been used to study a homologous series of chiral liquid crystals that exhibit smectic-A (Sm-A), twist-grain-boundary (TGB(A)), and cholesteric (N*) phases. The Sm-A -TGB(A) and TGB(A)-N* transitions are first order with small latent heats: 40 and 8.1 mJ/g, respectively. There is a large rounded heat capacity peak in the N* phase that is consistent with the evolution of short-range chiral line liquid (N-L*) character but does not represent a thermodynamic transition. All the observed features are directly analogous to those in type-II superconductors with strong fluctuations.

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页码：5000 / 5003

页数：4

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