HIGH-INFORMATION-DENSITY STORAGE SURFACES.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1970
- Accession Number
- AD0708578
Entities
People
- L. N. Heynick
Organizations
- SRI International