Electrical addressing of polymer stabilized hyper-twisted chiral nematic liquid crystals with interdigitated electrodes: Experiment and model | Zendy

Alexander Lorenz | Zendy; Damian J. Gardiner | Zendy; Stephen Morris | Zendy; Flynn Castles | Zendy; Malik M. Qasim | Zendy; Su Seok Choi | Zendy; W.-S. Kim | Zendy; H. J. Coles | Zendy; Timothy D. Wilkinson | Zendy

Open Access

Electrical addressing of polymer stabilized hyper-twisted chiral nematic liquid crystals with interdigitated electrodes: Experiment and model

Author(s) -

Alexander Lorenz,

Damian J. Gardiner,

Stephen Morris,

Flynn Castles,

Malik M. Qasim,

Su Seok Choi,

W.-S. Kim,

H. J. Coles,

Timothy D. Wilkinson

Publication year - 2014

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4865558

Subject(s) - liquid crystal , materials science , flexoelectricity , hysteresis , polymer , electrode , dielectric , electro optic effect , optoelectronics , coupling (piping) , phenomenological model , electro optics , kerr effect , optics , biaxial nematic , condensed matter physics , electric field , chemistry , composite material , physics , quantum mechanics , nonlinear system

Electro-optic switching in short-pitch polymer stabilized chiral nematic liquid crystals was studied and the relative contributions of flexoelectric and dielectric coupling were investigated: polymer stabilization was found to effectively suppress unwanted textural transitions of the chiral nematic liquid crystal and thereby enhance the electro-optical performance (high optical contrast for visible light, a near ideal optical hysteresis, fast electro-optic response). Test cells were studied that possessed interdigitated electrodes to electrically address the liquid crystal. Based on simulations, a well-fitted phenomenological description of the electro-optic response was derived considering both flexoelectro-optic and Kerr-effect based electro-optic response. © 2014 AIP Publishing LLC

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