Spherulitic liquid crystalline texture

Details Spherulitic liquid crystalline texture Spherulitic liquid crystalline texture

1974-05-28

1976-02-17

Smith, Alfred E.

G02F 113

Patent

active

039388808

ABSTRACT:
Liquid crystalline compositions comprising dielectrically negative nematic liquid crystalline materials from about 0.4 percent by weight to about 3 percent by weight optically active materials, in contact with an aligning agent, and characterized by a helical pitch to layer thickness ratio of from about 1 to about 10 are transformed from an initially homeotropic or homogeneous texture into a novel stable spherulitic texture upon removal of an applied D.C. or low frequency A.C. electrical field. Erasure and imaging of the novel spherulitic texture are disclosed.

REFERENCES:
patent: 3703331 (1972-11-01), Goldmacher et al.
patent: 3803050 (1974-04-01), Haas et al.
patent: 3806230 (1974-04-01), Haas
Hezlmeier et al. "A New Electric-Field-Controlled..." APL Vol. 13, No. 4 pp. 132-3, 15 Aug. 1968.

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