THE SCANNING DIELECTRIC MICROSCOPE

被引:34
作者
ASAMI, K
机构
[1] Institute for Chemical Research, Kyoto University, Uji, Kyoto
关键词
D O I
10.1088/0957-0233/5/5/020
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This article describes a new instrument to image the local capacitance (or permittivity) and conductance (or conductivity) of colloidal particles and membranes in an aqueous environment. Capacitance and conductance are measured by the three-terminal (guarded electrode) method with a coaxial probe electrode, which is laterally scanned over samples on a plate electrode. The images of capacitance and conductance are obtained at frequencies between 1 kHz and 10 MHz, which enables the study of dielectric relaxation of individual particles and local areas of membranes.
引用
收藏
页码:589 / 592
页数:4
相关论文
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