Transient behaviour of polarity-reversed current in a liquid-crystal- montmorillonite-clay device

Yuan Pin Huang, Hui Yu Chen, Wei Lee, Tsung Yen Tsai*, Wei Kuo Chin

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Transient currents induced by the polarity reversal of an applied dc voltage in nematic liquid crystal hybridized with montmorillonite clay have been studied. Comparative values of the ion-charge concentrations deduced from the experimental data suggest that the clay hybridized into liquid crystal has a great impact on the ion-charge concentration, which can be dramatically reduced to as low as to ∼1% for a nematic cell containing merely 0.5 wt% clay. Such hybridization suppresses the formation of electric bilayers and the charge-screening effect. Due to the clay and liquid-crystal molecules being aligned to the direction of the field, a higher mobility is observed in hybridized cells. This study demonstrates that montmorillonite clay hybridized into liquid crystal yields many advantages to improve the electro-optical properties of the display device.

Original languageEnglish
Pages (from-to)590-594
Number of pages5
JournalNanotechnology
Volume16
Issue number4
DOIs
StatePublished - 1 Apr 2005

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