Electrically Tunable Reflection Color Of Chiral Ferroelectric Nematic Liquid Crystals
AssigneeKent State University
InventorsAntal Jakli, Chenrun Feng
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Abstract
The present invention relates to a doped ferroelectric nematic liquid crystal having a chirality-induced stabilization of the polar nematic order, improved relaxation time for electro-optical switching, and selective reflection in the visible wavelength that is reversibly tunable. The ferroelectric nematic liquid crystal is doped with a chiral dopant selected from the group benzoic acid, 4-hexyl-,4-[[(1-methylheptyl)oxy]carbonyl]phenyl ester (ZLI811) and BDH1281.
Claims17
(canceled)
(canceled)
The liquid crystal assembly of claim 4, wherein the ferroelectric nematic liquid crystal is 4-[(4-nitrophenoxy)carbonyl]phenyl2,4-dimethoxybenzoate.
A liquid crystal assembly comprising
- a doped ferroelectric nematic liquid crystal including a ferroelectric nematic liquid crystal doped with a chiral dopant, wherein the chiral dopant is selected from benzoic acid, 4-hexyl-,4-[[(1-methylheptyl)oxy]carbonyl]phenyl ester and the formula
- and
- electrodes for providing an in-plane electric field of from 0.02 V/μm to 0.10 V/μm;
- wherein the doped ferroelectric nematic liquid crystal is reversibly tunable with the application of the from 0.02 V/μm to 0.10 V/μm in-plane electric field.
A liquid crystal assembly comprising
- a doped ferroelectric nematic liquid crystal including a ferroelectric nematic liquid crystal doped with a chiral dopant, wherein the chiral dopant is present at a weight percent of from 1 wt. % to 4 wt. %, wherein the doped ferroelectric nematic liquid crystal is in the N*F phase, wherein the ferroelectric nematic liquid crystal is 4-[(4-nitrophenoxy)carbonyl]phenyl2,4-dimethoxybenzoate, wherein the chiral dopant is selected from benzoic acid, 4-hexyl-,4-[[(1-methylheptyl)oxy]carbonyl]phenyl ester and the formula
- and
- electrodes for providing an in-plane electric field of from 0.02 V/μm to 0.10 V/μm;
- wherein the doped ferroelectric nematic liquid crystal is reversibly tunable with the application of the from 0.02 V/μm to 0.10 V/μm in-plane electric field.
Dependencies are inferred from the claim text.