Abstract

The electro-optic behavior of two chemically identical liquid crystal mixtures was compared. It was determined that ethoxybenzylidene- p ′- n -butylaniline (Eobuta) doped with 10% 1-methanol exhibited pronounced optical storage, whereas Eobuta doped with 10% racemic menthol only exhibited dynamic scattering. Since Eobuta doped with 1-menthol is cholesteric and Eobuta doped with racemic menthol is nematic, it was concluded that optical storage capability is an intrinsic property of the cholesteric state, and in agreement with the observable textures, should be viewed as a reversible plane ⇄ focal-canic texture change.

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