USA flag logo/image

An Official Website of the United States Government

MICROWAVE-COMPATIBLE, HIGH-TC SUPERCONDUCTING FILMS ON SAPPHIRE SUBSTRATES

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
12041
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
12041
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Neocera , LLC
10000 Virginia Manor Road Suite 300 Beltsville, MD 20705
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1991
Title: MICROWAVE-COMPATIBLE, HIGH-TC SUPERCONDUCTING FILMS ON SAPPHIRE SUBSTRATES
Agency: NASA
Contract: N/A
Award Amount: $496,563.00
 

Abstract:

AMONG THE POTENTIAL APPLICAITONS OF THE NEW HIGH-TEMPERATURECERAMIC SUPERCONDUCTORS ARE MICROWAVE DEVICES FOR COMMUNICATIONS APPLICATIONS. FABRICATION OF SUCH DEVICES WILL REQUIRE WILL-CONTROLLED TECHNIQUES FOR PREPARING THIN FILMS OF THE MATERIALS ON SUBSTRATES HAVING LOW MICROWAVE LOSSES SUCH AS SINGLE-CRYSTAL ALUMINA (SAPPHIRE). THE INNOVATIVE FEATURE OF THIS PROJECT WILL BE TO FORM HIGH- TEMPERATURE SUPERCONDUCTOR FILMS ON SAPPHIRE WITH A BUFFER LAYER INTERPOSED BETWEEN THE SUBSTRATE AND FILM TO ALLEVIATEINTERFACE PROBLEMS SUSH AS CHEMICAL INTERACTIONS AND THERMALEXPANSION MISMATCH. TO PROMOTE WELL-ORDERED CRYSTAL GROWTH OF THE SUPERCONDUCTOR LAYER, THE BUFFER LAYER MUST BE DEPOSITED EPITAXIALLY ON THE SUBSTRATE, AND CLOSE CRYSTAL- LATTICE MATCHING BETWEEN THE BUFFER MATERIAL AND SUBSTRATE ARE REQUIRED. SEVERAL MATERIALS - INCLUDING ZRO2, LAGAO3 AND LAALO3, - WILL BE INVESTIGATED FOR THEIR SUITABILITY AS BUFFER LAYERS, AND DOUBLE-LAYER BUFFERS WILL ALSO BE CONSIDERED AS A MEANS OF SATISFYING THE DIFFERENT REQUIREMENTS. THE EFFORT EMPHASIZES THE USE OF A SINGLE TECHNIQUE, PULSED LASER DEPOSITION, FOR FORMING BOTH THE BUFFER LAYERS AND SUPERCONDUCTOR FILMS. MICROWAVE DEVICE APPLICATIONS WHICH COULD BENEFIT FROM THE AVAILABILITY OF HIGH-T FILMS ON SAPHIRE SUBSTRATES INCLUDE PASSIVE COMPONENTS SUCH AS RESONATORS, FILTERS, AND STRIPLINES AND ACTIVE DETECTORS AND MIXERS BASED ON JOSEPHSON TUNNELING PHENOMENA.

Principal Investigator:

Roger Edwards
President
2016472694

Business Contact:

Roger edwards
PRESIDENT
2016472694
Small Business Information at Submission:

Neocera Associates, Inc.
P.o. Box 815 Piscataway, NJ 08855

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No