Dual‐mode liquid crystal devices with switchable memory and dynamic modes

Abstract

A liquid crystal device with switchable dynamic and memory modes was investigated and developed. The proposed device reveals the splay, π-twist, and bend states via selective switching among them. In the dynamic mode, the device is operated in the bend state, which exhibits a wide viewing-angle and a fast-response-time due to its self-compensated bend structure and flowaccelerated fast response time, respectively. In the memory mode, the permanent memory characteristics in the splay and π-twist sates are obtained, respectively. The switching mechanisms of the tristate device are also proposed.

Dynamic Tuning and Memory Switching of Defect Modes in a Hybrid Photonic Structure

“…Specifically, a dual-mode chiral-agent-doped dual-frequency LC (CD-DFLC) unites the bistable chiral-splay nematic (BCSN) and optically compensated bend (OCB) as the memory and dynamic modes in one cell, respectively [29]. The DFLC is a LC material whose dielectric anisotropy ∆ε can be varied by the frequency of the applied electric field [30].…”

“…In recent years, dual-mode LC cells have widely been studied from the point of view of practical applications because they possess both the dynamic and memory functions in a single device [25][26][27][28][29][30]. Specifically, a dual-mode chiral-agent-doped dual-frequency LC (CD-DFLC) unites the bistable chiral-splay nematic (BCSN) and optically compensated bend (OCB) as the memory and dynamic modes in one cell, respectively [29].…”