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Magnetic Deformation Storage

IP.com Disclosure Number: IPCOM000084146D
Original Publication Date: 1975-Sep-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Fan, GJ: AUTHOR [+3]

Abstract

This is a deformation display wherein the deformations are produced by localized magnetic fields applied to an elastomer, the latter being either coated with a fine particle film of magnetic material or having a magnetic material dispersed throughout its volume (e.g., Fe(3)O(4) and CrO(2)). The latter method reduces the forces required to deform the composite material (by eliminating the mechanical stiffness of the film) thereby permitting larger deflections.

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Magnetic Deformation Storage

This is a deformation display wherein the deformations are produced by localized magnetic fields applied to an elastomer, the latter being either coated with a fine particle film of magnetic material or having a magnetic material dispersed throughout its volume (e.g., Fe(3)O(4) and CrO(2)). The latter method reduces the forces required to deform the composite material (by eliminating the mechanical stiffness of the film) thereby permitting larger deflections.

As shown in Fig. 1, elastomer 2 may be placed on the surface of a magnetic bubble material, not shown, with a permalloy 4 being coated on the elastomer 2, the fields 6 being produced by magnetic bubbles created and moved in the standard manner for producing a deformation 8. This normally requires a shift register configuration, and parallel entry of many such registers would be employed to obtain a writing rate compatible with the end use of the device.

As shown in Fig. 2, the elastometer 10 may be placed on a substrate, not shown, containing a pattern of conductors and hard magnetic material similar to a flat-film memory. The elastomer 10 may have dispersed magnetic material 12 therein, with a reflecting film 14 formed thereon, for producing a deformation 16 in response to a localized field 18. In this way, X-Y selection and indefinite storage may be obtained, as well as a greater flexibility in choice of material and configuration.

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