Browsing by Author "Krakhalev, Mikhail N."

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Electro-optical response of an ionic-surfactantdoped nematic cell with homeoplanar-twisted configuration transition
(2014-04-01)
Sutormin, Vitaly S.
;
Krakhalev, Mikhail N.
;
Prishchepa, Oxana O.
;
Lee, Wei
;
Zyryanov, Victor Ya
This study is concerned with the optical response of an electro-optical material consisting of nematic liquid crystal as well as ionic surfactant as a dopant. The dopant is a key component to carry out the working of the resulting device through configuration switching. The operational principle is based on the surface anchoring transition induced by a steady electric field. The dynamic characteristics of the electro-optical cell can be considerably improved when the nematic layer is reoriented from the initially homeoplanar director configuration into the twisted state. Besides, a method to shorten the relaxation time is demonstrated by using a controlling pulse with a bipolar waveform. (C)2014 Optical Society of America