Accession Number : AD0708578

Title :   HIGH-INFORMATION-DENSITY STORAGE SURFACES.

Descriptive Note : Final rept. 1 Apr 65-31 Jan 70,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Heynick,L. N.

Report Date : JUN 1970

Pagination or Media Count : 104

Abstract : The program was devoted to the development of novel electron-beam-addressable data-storage mosaics and of the requisite high-resolution electron-optical systems and accessories for performing storage and readout at high speeds, with a view toward demonstrating experimentally that advanced memory systems of this kind are practical. The mosaics developed consist of substrate-supported metal/dielectric/metal film sandwiches about 1-micrometer thick having regular arrays of submicron-diameter holes on approximately one micrometer centers; the storage elements are microcapacitors, called micro-caps, at the bases of the holes. With dc across the sandwich, an electron beam is used to set each micro-cap to the potential of either film, with these micro-cap potentials constituting the binary states. In readout, the energy difference of the secondary electrons emerging from the element holes is used to distinguish between the states. The electron-optical system developed for data storage and readout consists essentially of a field-emitter source, an apertured three-element electrostatic lens, an octupole deflector of very low aberration constants, and a velocity-selector/electron-multiplier combination for binary-state discrimination and amplification. (Author)

Descriptors :   (*DATA STORAGE SYSTEMS, MICROELECTRONICS), INFORMATION RETRIEVAL, ELECTRON GUNS, MICROSTRUCTURE, FILMS, ETCHING, SPUTTERING, ELECTROOPTICS

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE