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Proceedings Paper

Low-frequency dielectric spectroscopy of liquid crystalline materials due to ac or step voltage excitations
Author(s): Aleksander B. Szymanski; Wiktor L. Szymanski
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Paper Abstract

The aim of this contribution is to discuss the problem of low frequency electrical conductivity of mesomorphic materials. The subject may be studied in Time Domain technique by means of the excitation of the sample by step voltage pulse. The application of alternating voltage wave is nowadays realized by means of the use of Frequency Range Analyzers. Thus, one can compare the results obtained by means of the methods indicated above. It is assumed that in `small signal case' the results should be equivalent. There exists considerable experimental evidence, that these methods are producing results, which are not in agreement, even, at lowest signals used in experiment. A possible explanation of this discrepancy is proposed.

Paper Details

Date Published: 12 May 2000
PDF: 7 pages
Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); doi: 10.1117/12.385672
Show Author Affiliations
Aleksander B. Szymanski, Rzeszow Univ. of Technology and NIBRELF (Poland)
Wiktor L. Szymanski, NIBRELF (Poland)


Published in SPIE Proceedings Vol. 4147:
Liquid Crystals: Chemistry, Physics, and Applications
Stanislaw J. Klosowicz; Jolanta Rutkowska; Jerzy Zielinski; Jozef Zmija, Editor(s)

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