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Diamond Cathode Coating for Spacecraft Charge Mitigation

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9453-18-P-0237
Agency Tracking Number: F18A-011-0028
Amount: $149,996.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: AF18A-T011
Solicitation Number: 2018.0
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-07-16
Award End Date (Contract End Date): 2019-07-16
Small Business Information
20 New England Business Center
Andover, MA 01810
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jonathan Rameau
 (978) 689-0003
Business Contact
 B. David Green
Phone: (978) 689-0003
Research Institution
 Brookhaven National Laboratory
 John Smedley
P.O. Box 5000
Upton, NY 11973
United States

 (631) 344-7865
 Federally Funded R&D Center (FFRDC)

Physical Sciences Inc. (PSI) proposes the development of a composite laminate cathode coating based largely on consumer off the shelf (COTS) industrial materials functionalized to possess a low work function, negative electron affinity surface. The cathode coating is applicable to any surface of a spacecraft, regardless of shape or material, and allows passive one wire operation for spacecraft charge mitigation by utilizing photoelectric and triple point effects. In Phase I of the program, PSI will obtain sample raw materials, functionalize them and coat representative substrates such as aluminum and conductively coated glass. PSI will also develop monolithic devices with properties similar to the laminate coating as a risk mitigation strategy. We will measure samples emission current densities and ignition potentials during discharge in simulated space environments and characterize their surface morphology by optical and electron microscopy. Results of the Phase I emission studies will guide the optimization of the coating technology in Phase II. The primary benefits derived from this technology will be a rugged and simple spacecraft cathode coating that will extend the operational life and safety of US space assets as well as aid in realization of advance spacecraft power and propulsion systems such as the electrodynamic tether.

* Information listed above is at the time of submission. *

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