Abbreviated Journal Title
Appl. Phys. Lett.
ELECTRIC-FIELD; DISPLAY; HYSTERESIS; SYSTEMS; TIME; LCDS; Physics, Applied
The dynamic response of a polymer-stabilized blue phase liquid crystal (BPLC) is comprised of two distinct processes: Kerr effect-induced local reorientation and electrostriction-induced lattice distortion. A double exponential rise/decay model is proposed to analyze the underlying physical mechanisms. If the electric field is below a critical field (E-c), Kerr effect dominates and the response time is fast. However, when E > E-c electrostriction effect manifests, leading to an increased response time and a noticeable hysteresis. A higher polymer concentration helps suppress electrostriction, but the tradeoff is increased operation voltage. These results provide useful guidelines for future BPLC material and device optimizations.
Applied Physics Letters
Xu, Daming; Yan, Jiang; Yuan, Jiamin; Peng, Fenglin; Chen, Yuan; and Wu, Shin-Tson, "Electro-optic response of polymer-stabilized blue phase liquid crystals" (2014). Faculty Bibliography 2010s. 6313.