Electro-optic response of polymer-stabilized blue phase liquid crystals
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. (C) 2014 AIP Publishing LLC.
Applied Physics Letters
"Electro-optic response of polymer-stabilized blue phase liquid crystals" (2014). Faculty Bibliography 2010s. 6313.