Accession Number : ADA291178

Title :   Dimensionally Self Regulating Materials.

Descriptive Note : Final rept. 1 May 91-31 Oct 94,

Corporate Author : OKLAHOMA UNIV NORMAN

Personal Author(s) : Furneaux, John E.

PDF Url : ADA291178

Report Date : 15 DEC 1994

Pagination or Media Count : 8

Abstract : Statement of Problem Studied and Results: This is a collaborative project between the University of Oklahoma (OU) and Boston University (BU) studying the possibility of producing an infrared detector which integrates the function of a spectrometer. The successful implementation of these ideas could lead to a smart infrared detector. The system we are studying as a prototype is the two-dimensional electron system (2DES) GaAs-AlGaAs modulation-doped heterostructure system patterned with very narrow gates. This leads to a transition to an one-dimensional electron system (1DES). We expect this system to be particularly sensitive to infrared radiation just at the crossover from a 2DES to a 1DES. Thus this system is a Dimensionally Self-Regulating Material. We have made considerable progress toward these goals. We have made successful theoretical models of the proposed devices and we have produced and tested the first generation devices electrically. Far-infrared tests are now in progress. jg

Descriptors :   *SEMICONDUCTORS, *INFRARED DETECTORS, TEST AND EVALUATION, MODELS, TWO DIMENSIONAL, COMPOSITE MATERIALS, GALLIUM ARSENIDES, ALUMINUM GALLIUM ARSENIDES, ONE DIMENSIONAL, GATES(CIRCUITS), SENSITIVITY, ELECTRONS, FAR INFRARED RADIATION, INFRARED RADIATION, SPECTROMETERS.

Subject Categories : Electrical and Electronic Equipment
      Inorganic Chemistry
      Laminates and Composite Materials
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE