Accession Number : AD0659789

Title :   HIGH-INFORMATION-DENSITY STORAGE SURFACES.

Descriptive Note : Quarterly rept. no. 9, 1 Apr-30 Jun 67,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Rogers,Kendal T. ; Kelly,John

Report Date : OCT 1967

Pagination or Media Count : 35

Abstract : The program was devoted to the preparation and investigation of two novel kinds of electron-beam-addressable storage elements of submicron size and densely-packed arrays of these elements. One such element, called a micron-cap consists of an isolated microcapacitor at the bottom of a hole in a metal/dielectric/metal film sandwich. The other element, called a micron-ring, consists of an isolated metal film ring embedded concentrically with a hole in the dielectric of a multilayer metal/dielectric film sandwich. Storage and readout data on micron-cap elements were taken at low beam energies (near to the lower unity-crossover energy for secondary emission). System changes were made to allow higher sensitivity and higher-speed operation, as well as to facilitate high-beam-energy investigations. The mildly bakeable (400C) field emitter and molybdenum lens system and the associated commercial ultra-high-vacuum system have been assembled, the manipulators tested and found satisfactory, and beam measurements begun. Work on storage structures is being concentrated on attempts to wake regular arrays with a commercial electron probe; capability of producing approximately 10,000 elements in a field has been shown. Attempts are underway to make micron-ring elements using the same electron probe to polymerize electron-sensitive resist in the critical step of forming the ring. (Author)

Descriptors :   (*DATA STORAGE SYSTEMS, *MICROELECTRONICS), (*THIN FILM STORAGE DEVICES, SANDWICH CONSTRUCTION), STORAGE TUBES, ELECTRON GUNS, METAL FILMS, CAPACITORS, MOLYBDENUM, DIELECTRIC FILMS, PROBES, ELECTRON MULTIPLIERS, BRASS

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE