Raytheon Company

Brian J Zelinski

David R Smith

Thomas M Deppert

William C Mollberg

Delmar L Barker

William Owens

Richard L Gentilman

Christopher S Nordahl

Thomas M Hartnett

An article of manufacture includes a zinc sulfide layer and a coupling agent adhered to the zinc sulfide layer by a disulfide bond. The coupling agent comprises a functional group extending from the zinc sulfide layer.

Zinc sulfide coupling agents

A solid solution-based optical material capable of transmitting infrared light, the solid solution-based optical material comprising at least two nano-sized phases intermixed in one another, wherein at least one of the at least two nano-sized phases is a solid solution containing a dissolved dopant, the dissolved dopant present in an amount sufficient to reduce a refractive index difference between the at least two nano-sized phases to about 0.2 or less when infrared light is being transmitted. Various embodiments are directed to related systems and methods. In one embodiment, the infrared light is visible infrared light, short-wave infrared light, eye safe infrared light, medium wave infrared light, long wave infrared red light, or combinations thereof.

Solid solution-based nanocomposite optical ceramic materials

Engineered defects are reproduced in-situ with graphene via a combination of surface manipulation and epitaxial reproduction. A substrate surface that is lattice-matched to graphene is manipulated to create one or more non-planar features in the hexagonal crystal lattice. These non-planar features strain and asymmetrically distort the hexagonal crystal lattice of epitaxially deposited graphene to reproduce 'in-situ' engineered defects with the graphene. These defects may be defects in the classic sense such as Stone-Wales defect pairs or blisters, ridges, ribbons and metacrystals. Nano or micron-scale structures such as planar waveguides, resonant cavities or electronic devices may be constructed from linear or closed arrays of these defects. Substrate manipulation and epitaxial reproduction allows for precise control of the number, density, arrangement and type of defects. The graphene may be removed and template reused to replicate the graphene and engineered defects. As such, expensive and time-consuming techniques can be justified to create the template. The capability to control the defect pattern in graphene enables the creation of structured devices such as waveguides, resonant cavities and electron devices in graphene.

In-situ growth of engineered defects in graphene by epitaxial reproduction

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Tucson, AZ, United States of America

Brian J Zelinski