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Phase-Change Materials for Tunable Infrared Devices

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-18-C-0659
Agency Tracking Number: N17A-020-0185
Amount: $999,961.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N17A-T020
Solicitation Number: 17.A
Solicitation Year: 2017
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-09-24
Award End Date (Contract End Date): 2020-09-24
Small Business Information
12605 Challenger Pkwy Ste 150
Orlando, FL 32826
United States
DUNS: 962572470
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 James Ginn James Ginn
 (407) 574-3107
Business Contact
 James Ginn
Phone: (407) 574-3107
Research Institution
 The Johns Hopkins University Applied Physics Laboratory
 David Shrekenhamer David Shrekenhamer
11100 Johns Hopkins Rd
Laurel, FL 20723
United States

 (240) 228-9422
 Nonprofit College or University

There is a critical need for the development of dynamic IR materials that can be used to form device level components and systems necessary for mid to long wave infrared (3-12 ┬Ám) applications. To meet these future needs, the team proposes to develop tunable optical elements based around metamaterial surfaces or metasurfaces. Metasurfaces are a class of engineered materials where arrays of sub-wavelength resonant elements are integrated within a surface to impress a desired spectral, directional, or polarization response. Metasurfaces also enable the development of extremely thin spectral tailoring (<500 nm in the MWIR and <1 micron in the LWIR). To address the need for dynamic performance, the team propose to develop a new class of infrared modulators based around phase change materials (PCM). Phase change materials, such as chalcogenide glasses, can be switched between an amorphous and crystalline phase, with each phase possessing significantly different optical properties. Previous work by the team has shown that GeTe based metasurface designs have significant modulation of reflectivity, narrow bandwidth, and can be designed to operate over large portions of the spectra.

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

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