Imaging method

Details Imaging method Imaging method

1974-08-19

1976-08-03

Stern, Ronald J.

G02F 113

Patent

active

039725880

ABSTRACT:
A liquid crystalline composition comprising an optically active material and a nematic liquid crystalline material having negative dielectric anisotropy and optionally an ionizable salt, and capable of undergoing the electrohydrodynamic induced transition from the Grandjean texture to the focal-conic texture, is initially provided in the Grandjean Texture. Current is passed through the liquid crystalline composition up to its region of maximum response to electrical stimulus. A second current is then passed through the liquid crystalline composition until at least a partial optical conversion is achieved in response to electrical stimulus of the liquid crystalline composition.

REFERENCES:
patent: 3642348 (1972-02-01), Wysocki et al.
patent: 3806230 (1974-04-01), Haas
Melamed et al., Applied Physics Letters, vol. 16, No. 4, Feb., 1970, pp. 149-151.

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