Photopyroelectric structural and thermal characterization of first-order phase transition in liquid crystals

被引：17

作者：

Mercuri, F ^{[1
]}

Pizzoferrato, R

Zammit, U

Marinelli, M

机构：

[1] Univ Roma Tor Vergata, Dipartimento Ingn Meccan, Rome, Italy

[2] INFM, Sez Roma 2, Rome, Italy

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 22期

关键词：

D O I：

10.1063/1.1524290

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A photopyroelectric setup, which allows the study of the thermal behavior and the structural evolution of 8CB liquid crystal at the first-order nematic-isotropic phase transition, is presented. It is shown that the kinetics of the transition in liquid-crystal films are not the same on heating and cooling, and a quantitative determination of the width of the two-phase coexistence region is reported. A correlation between the photopyroelectric signal and the liquid-crystal morphology in the coexistence region has been found. (C) 2002 American Institute of Physics.

引用

页码：4148 / 4150

页数：3

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