University of Central Florida Research Foundation, Inc.

Lockheed Martin Corporation

David Shelton

Glenn D Boreman

Gene D Tener

Edit L Braunstein

Thomas E Haberfelde

Andrew H Hawkins

James Ginn

Jeffrey D'Archangel

Infrared metamaterial arrays containing Au elements immersed in a medium of benzocyclobutene (BCB) were fabricated and selectively etched to produce small square flakes with edge dimensions of approximately 20 &#x3bc;m. Two unit-cell designs were fabricated: one employed crossed-dipole elements while the other utilized square-loop elements.

Metamaterial composition comprising frequency-selective-surface resonant element disposed on/in a dielectric flake, methods, and applications

A tunable optical diffraction grating apparatus, such as but not limited to a tunable Fresnel zone lens apparatus, includes a plurality of symmetric repeating structures (i.e., typically concentric rings) located over a substrate and comprising a material susceptible to a transparent to opaque transition for a designated radiation wavelength. The tunable optical diffraction grating apparatus also includes a means for separately effecting the transparent to opaque transition for each of the plurality of symmetric repeating structures to provide a plurality of transparent zones each comprising a variable first sub-plurality of adjacent transparent symmetric repeating structures alternating and interposed between a plurality of opaque zones each comprising a variable second sub-plurality of adjacent opaque symmetric repeating structures. Also included are a method for fabricating the tunable optical diffraction grating apparatus and a method for operating the tunable optical diffraction grating apparatus.

Tunable optical diffraction grating apparatus and related methods

An array of two or more tunable electro-optical reflecting elements where the phase response of one or more elements may be adjusted by a variety of approaches including, but not limited to: a liquid crystal superstrate, schottky contact(s), ultra-violet radiation pulses, and illumination of photoconductive substrates. Methods and apparatus for direct and/or adaptive control of phase response via the above approaches are also discussed.

Dynamic reflectarray technology for electro-optical sensors

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Orlando, FL, United States of America

David Shelton