Electrical conductivity of liquid-crystalline materials; old results in light of new findings

Aleksander B. Szymanski; Elzbieta Szwajczak; J. Michalski; Wiktor L. Szymanski

doi:10.1117/12.373713

14 December 1999 Electrical conductivity of liquid-crystalline materials; old results in light of new findings

Aleksander B. Szymanski, Elzbieta Szwajczak, J. Michalski, Wiktor L. Szymanski

Proceedings Volume 4017, Polymers and Liquid Crystals; (1999) https://doi.org/10.1117/12.373713
Event: International Conference on Dielectric and Related Phenomena '98, 1998, Szczyrk, Poland

Abstract

Here is considerable literature related to the electrical conductivity of liquid-crystalline materials. However, it seems, that the electrode interfacial phenomena were not taken into account consequently. This provoked some criticism. This criticism is supported by frequency domain data. These data are indicating electrode polarization as dominant mechanics, in long period time, particularly. The data related to frequency domain and time domain were analyzed. Now, it seems, that at least in liquid-crystalline cyanobiphenyls materials, due to electrode effects, DC conductivity can be observed. However, in this case one can expect non-uniformity of electrical field in the plane parallel/sandwich/sample. The aim of this contribution is an analysis of these effects and their relations with the result obtained in the past and the critical evaluation of a previously assumed material characterization.

Citation Download Citation

Aleksander B. Szymanski, Elzbieta Szwajczak, J. Michalski, and Wiktor L. Szymanski "Electrical conductivity of liquid-crystalline materials; old results in light of new findings", Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); https://doi.org/10.1117/12.373713

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