Liquid crystal information storage device

Details Liquid crystal information storage device Liquid crystal information storage device

1984-09-10

1987-10-27

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 2522991, 25229966, 25229967, 350351, 350350R, 350350S, C09K 1900, C09K 1952, C09K 1912, G02F 113

Patent

active

047025581

ABSTRACT:
A liquid crystal information storage device comprising a layer of material containing a side chain polymeric liquid crystal. At least a part of the material is heated from a viscous state above its glass transition temperature, to a fluid region in which the liquid crystalline material can readily undergo field-induced alignment. The material is addressed in this fluid region so as to achieve the selective variation in texture and orientation of molecules within the material and so record information, and the material is subsequently cooled and returned to its viscous state whereupon the information is retained.

REFERENCES:
patent: 4040047 (1977-08-01), Hareng et al.
patent: 4139273 (1979-02-01), Crossland et al.
patent: 4232951 (1980-12-01), Aharoni et al.
patent: 4293435 (1981-10-01), Portugall et al.
patent: 4358391 (1982-11-01), Finkelmann et al.
patent: 4416515 (1983-11-01), Funada et al.
patent: 4617371 (1986-10-01), Blumstein et al.
patent: 4657694 (1987-04-01), Heeger et al.
Achard et al, Mol Cryst Liq Cryst, vol. 92, 1983, pp. 111-118.

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