Erasable optical memory material from a ferroelectric polymer

Details Erasable optical memory material from a ferroelectric polymer Erasable optical memory material from a ferroelectric polymer

1985-09-12

1988-03-15

Tubbesing, T. H.

Static information storage and retrieval

Information masking

Polarization

365117, G11C 1142, G11C 1122

Patent

active

047317540

ABSTRACT:
An electro-optic memory effect providing for storing, erasing and rewriting igital information relies upon a ferroelectric polymer, polyvinylidene fluoride. Recent development of tri-fluoroethylene copolymers of this material with Curie temperatures below the melting point provides a means of selective writing, storage and erasure. The advantage of the polyvinylidene fluoride material for optical recording is its high chemical and physical stability. This material provides a mechanism for bit-by-bit erasure and long time storage of information.

REFERENCES:
patent: 3479651 (1969-11-01), Bowers
patent: 3680060 (1972-07-01), Keneman et al.
patent: 3829847 (1974-08-01), Masi
patent: 3855579 (1974-12-01), Grenot et al.
patent: 3868653 (1975-02-01), Winter
patent: 3902788 (1975-09-01), Strehlow

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