Self-Assembled Molecular Coatings for Helmet Mounted Display Visors

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F33615-01-M-6044
Agency Tracking Number: 011HE-0965
Amount: $99,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
P.O. Box 618, Christiansburg, VA, 24068
DUNS: 008963758
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Kristie Cooper
 Research Scientist
 (540) 953-1785
 klcooper@nanosonic.com
Business Contact
 Richard Claus
Title: President
Phone: (540) 953-1785
Email: roclaus@nanosonic.com
Research Institution
N/A
Abstract
This Phase I SBIR program will investigate the feasibility of using molecular self-assembly processes for the formation of spectral coatings on helmet mounted display visors. Electrostatic self-assembly (ESA) involves the simple and low-cost coating ofsolid substrates by the alternate adsorption of anionic and cationic complexes of polymers, metallic nanoclusters and other molecules from water-based solutions at room temperature and pressure. Each adsorption step adds a single uniform molecularmonolayer to the thickness of the total coating. By selecting the molecules incorporated into each of many successive monolayers, the index of refraction may be varied as a function of thickness through the coating, and spectral filter stacks may beformed. Advantages over conventional deposition processes include ability to form uniformly-thick coatings on arbitrarily-shaped substrates of virtually any size, and avoidance of high temperature processing which often either limits substrate choice orleads to unacceptable long-term mechanical performance for polymer-based substrates. During Phase I, NanoSonic will design and fabricate narrowband spectral filters on curved polycarbonate substrates, and evaluate spectral and mechanical properties of thecoated test articles. During Phase II, the filter fabrication process will be optimized to allow the low-cost batch coating of visors by an automated robotic coating system.Improved methods for the fabrication of spectral control coatings have defenseapplications in laser weapon protection, canopy and window coatings and stealth systems, and commercial applications for bulk optical components, microphotonic and optoelectronic device endfaces, and AR coatings for spectacle lenses and windows.

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

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