Electrooptical threshold behavior of electroconvection in twisted nematic liquid crystal cells View Full Text


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Article Info

DATE

2017-02

AUTHORS

Jae Min Song, Gyu-Jin Choi, Jin Seog Gwag, Youngku Sohn, Jong-Hoon Huh

ABSTRACT

In this paper, the electrooptical threshold behavior of electroconvection caused by the electrohydrodynamic instability in twisted nematic liquid crystal cells is presented. We observed the electroconvection optically and analyzed the change in the electrical threshold behavior according to the twisted angles in twisted liquid crystal cells in the conduction region that shows the Williams domain, which is one of the most basic patterns for electroconvection in an anisotropic fluid like liquid crystals (LCs). As a result, we confirmed that in the low frequency conduction regio where the Williams domain appears, the threshold voltage decreased as the twist angle increased even though the twist structure enhanced the effective viscosity in liquid flow. The increase in the twist angle may shorten the charge relaxation time because a twisted LC is a structure that more easily accumulates electrical charges on local curvatures. More... »

PAGES

276-280

Identifiers

URI

http://scigraph.springernature.com/pub.10.3938/jkps.70.276

DOI

http://dx.doi.org/10.3938/jkps.70.276

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1083743020


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