Transient behaviour of polarity-reversed current in a liquid-crystal–montmorillonite-clay device
2005; IOP Publishing; Volume: 16; Issue: 4 Linguagem: Inglês
10.1088/0957-4484/16/4/042
ISSN1361-6528
AutoresYuan-Pin Huang, Hui‐Yu Chen, Wei Lee, Tsung-Yen Tsai, Wei Chin,
Tópico(s)Quantum optics and atomic interactions
ResumoTransient 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 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.
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