A NEW TECHNIQUE FOR DETERMINATION OF THE SPATIAL DISTRIBUTION OF POLARIZATION IN POLYMER ELECTRETS

被引：49

作者：

Lang, Sidney B. ^{[1
]}

Das-Gupta, D. K. ^{[2
]}

机构：

[1] Ben Gurion Univ Negev, IL-84105 Beer Sheva, Israel

[2] Univ Coll N Wales, Bangor, Gwynedd, Wales

来源：

FERROELECTRICS | 1984年 / 60卷

关键词：

D O I：

10.1080/00150198408017506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new method for measuring the spatial distribution of polarization in poled polymer electrets has been developed. The technique, called the Laser Intensity Modulation Method (LIMM), is based upon measurement of the pyroelectric current generated by the electret when it is heated with a laser beam which is intensity-modulated at frequencies varying from 100 Hz to 100 kHz. A special analytical technique is used to transform the current-frequency measurements to spatial distributions. The method gives high resolution and is very stable with respect to measurement errors. The technique can be easily implemented in a laboratory with conventional equipment. Experimental results on a number of samples are presented.

引用

页码：23 / 36

页数：14