Methods and devices for charged beam accessible data storage

Details Methods and devices for charged beam accessible data storage Methods and devices for charged beam accessible data storage

1983-12-15

1986-12-23

Fears, Terrell W.

Static information storage and retrieval

Information masking

Thermoplastic

365118, 365128, G11C 1146

Patent

active

046317040

ABSTRACT:
Charged beam accessible data storage methods and devices involve a storage medium having an array of protrusions formed on a thermally insulative, substantially charged beam transparent base. The protrusions, made of high contrast material, can be selectively melted by a charged beam, such as an electron beam, in order to decrease the protrusions' aspect ratio and to increase their energy absorptive action when scanned by a charged beam. Since the melted protrusions do not wet on the base, the protrusions quickly assume a spherical bead shape when melted due to favorable surface tension forces. The bi-level charged beam absorption characteristics of the melted and unmelted protrusions provide the two "on" or "off" stored data states.

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