Accession Number : ADA119775

Title :   A Low Resistance Infrared Bolometer for Use with a Squid Detection System.

Descriptive Note : Final rept. 1 Apr-31 Jul 82,


Personal Author(s) : Swinehart,Philip R

PDF Url : ADA119775

Report Date : 24 Sep 1982

Pagination or Media Count : 48

Abstract : Low resistance thin film bolometers for infrared detection when impedance matched to a SQUID amplifier were fabricated from a range of gold/germanium alloys (12 to 25 atomic per cent gold). The low resistances of 0.1 to 0.2 ohms, including contact resistances, were obtained in the direction perpendicular to the film plane. High resistance versions with conduction parallel to the film plane were fabricated simultaneously. The resistance for the parallel conduction was characteristic of a semiconductor, but for the perpendicular mode it was characteristic of a metal. Available data suggests that the metallic conduction was caused by uncontrolled gold particle sizes which could equal the thickness of the film. (Author)

Descriptors :   *Infrared detection, Bolometers, *Resistance, Low level, Amplifiers, Fabrication, Gold alloys, Germanium alloys, Thin films, Conductivity, Thickness, Particle size

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE