OPTICALLY-ACTIVE BINARY-LIQUID CRYSTAL THERMOMETRY

被引：11

作者：

WINDHORN, TH

CAIN, CA

机构：

[1] Department of Electrical Engineering, University of Illinois, Urbana

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1979年 / 26卷 / 03期

关键词：

D O I：

10.1109/TBME.1979.326473

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Research on the biological effects and medical applications of non-ionizing electromagnetic fields often requires the use of non-metallic non-perturbing temperature sensors. The highly temperature dependent optical activity observed in certain types of liquid crystals makes possible the construction of very sensitive non-perturbing fiber-optic thermometers. A knowledge of the effect of various parameters on the optical rotatory power of the chosen liquid crystal is essential for the construction of such a device. The dependence of the optical rotatory power on temperature, composition, and sample thickness in a binary mixture of a nematic (MBBA) and a cholesteric (Cholesteryl Oleate) liquid crystal was studied. The dependence of effective pitch on composition was determined. Application of the data on rotatory power and effective pitch to the construction of devices is discussed. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：148 / 152

页数：5

共 20 条

[1]

ADAMS JE, 1973, Patent No. 3726584

[2] PITCH-CONCENTRATION RELATIONSHIPS IN MULTICOMPONENT LIQUID-CRYSTAL MIXTURES [J].