Raytheon Company

The University of Arizona

Arizona Board of Regents, a Body Corporate

Raythedn Company

Delmar L Barker

William Owens

Harry A Schmitt

Nitesh N Shah

Mead M Jordan

Abram G Young

John Warren Beck

Stephen M Schultz

Ross D Rosenwald

Hao Xin

Kenneth L Moore

W Howard Poisl

Michael J Broyles

Darrick M Buban

Jeffrey Clarke

Charles W Hicks

David R Sar

Frederick B Koehler

David James Knapp

Ward D Lyman

Richard J Wright

Dennis C Braunreiter

Alphonso A Samuel

John Okerson Crawford

Paul M Lyons

Mark E Elkanick

Brian J Zelinski

Teresa J Clement

Donald E Waagen

Andrew Greentree

Patrick O Kano

Dennis J Garrood

Marguerite J Green

Steven Schultz

William R Owens

Andrew D Greentree

Howard W Poisi

An aerodynamic nose cone capable of imaging through the nose cone is accomplished by forming the nose cone as an Afocal Axicon lens. Under a condition of RI&#x2248;cos(X)/cos(3X) where RI is an effective refractive index and X is a cone half angle of the solid right-circular cone. EMR incident on a front portion of the cone undergoes a total internal reflection (TIR) and exits a trailing surface of the cone with approximately the same parallelism with which it entered the cone. EMR incident behind the front portion of the cone that exits the trailing surface with different parallelism than it entered may be directed to a light dump or through a frustum of a cone to re-establish the correct parallelism. The entire optical system may be monolithically integrated into the nose cone to eliminate alignment issues and moving parts.

Aerodynamic solid nose cone formed with an afocal axicon lens and method of imaging

Disclosed herein are cooling systems, methods of making cooling systems, and methods of cooling using cooling systems. A cooling system includes a compression container with a coolant that includes a fluid. A valve is arranged on the compression container through which the coolant is released from the compression container. The cooling system further includes a component positioned to receive droplets of the coolant. The component has a surface with a three-dimensional topography that includes a plurality of pillars and a plurality of trenches. The component is an electronic component or a photoelectronic component.

Electronic cooling systems

Ducting and/or duct couplings can be formed from shape memory polymer material, with the material for example being additively manufactured. The use of shape memory polymer material for one or more of the duct portions may allow for easier installation of the ducting, for example allowing the ducting to be warped and/or bent to fit into or through places that are hard to reach or hard to maneuver through, with the ducting then heated to cause it to return to a predetermined memory shape. The coupling of duct portions together may be accomplished by the duct portions including a shape memory polymer material, with for example ends of the duct portions fitted together, and then heated to use a shape memory property of the material to effect coupling. Heating of the shape memory polymer material also softens the material, allowing it to move to a previously set shape.

Duct with shape memory material, and installation method

An apparatus for displaying a scene with blackbody light includes a sheet of nano-structures having a first side and a second side opposing the first side. The first side and the second side are configured to receive light from an environment facing both sides and emit light to the environment facing both sides. Each nano-structure is configured to receive light in a first range of wavelengths resulting in heating the nano-structure and to emit blackbody light due to the heating to display the scene with blackbody light. The apparatus also includes a projector configured to irradiate the nano-structures on one of the sides of the sheet with light in the first range of wavelengths that form the scene to be displayed with the blackbody light emitted from the sheet of nano-structures.

Dynamic blackbody scene display

A dual band infrared and ultraviolet radiation detector having an ultraviolet radiation detector embedded within a pair of IR anti-reflection layers wherein a first one of the infrared anti-reflection layer reflects ultraviolet energy passing through from the semiconductor, ultraviolet radiation detector back to the semiconductor, ultraviolet radiation detector.

Dual band ultraviolet (UV) and infrared radiation detector

A radiation detector for detecting ultraviolet energy having a single crystal UV radiation detector material and an amorphous support layer disposed directly on the single crystal UV radiation detector material with the single crystal UV radiation detector material having a c-axis aligned along a direction of the ultraviolet energy being detected.

Ultraviolet (UV) schottky diode detector having single crystal UV radiation detector material bonded directly to a support structure with proper c-axis orientation

An apparatus for displaying a scene with light in a range of infrared wavelengths, includes: an array of elements configured to emit light in a range of infrared wavelengths, each element having one or more nanotubes; a stimulator configured to apply a stimulus to each element in the array in order for each element to emit light in the range of infrared wavelengths; and a processor configured to send a signal to the stimulator in order to apply the stimulus to one or more selected elements in the array to display the scene.

Infrared scene projector

According to embodiment of the disclosure, a wave energy harvesting system comprises a water wave band gap structure (WWBGS) and one or more energy conversion devices. The water wave band gap structure (WWBGS) comprises an array of posts with one or more missing posts that define a defect cavity. The one or more defect cavities are configured to concentrate energy of water waves. The one or more energy conversion devices are positioned in or adjacent to one of the one or more defect cavities and are configured to convert the energy from the water waves into another form of energy.

Wave energy concentration using water wave band gap structure with defect cavities

Isotopically-enriched graphene and isotope junctions are epitaxially grown on a catalyst substrate using a focused carbon ion beam technique. The focused carbon ion beam is filtered to pass substantially a single ion species including a single desired carbon isotope. The ion beam and filtering together provide a means to selectively isotopically-enrich the epitaxially-grown graphene from given carbon precursor and to selectively deposit graphene enriched with different carbon isotopes in different regions.

Carbon ion beam growth of isotopically-enriched graphene and isotope-junctions

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

An imaging system () includes an array () of photonic band gap material cells. The band gap material has an absorption edge at about the emission frequency of a source () of electromagnetic energy. Images from a field of view () directed onto the photonic band gap array () increase the temperature of the illuminated cells, shifting the absorption edge frequency for those cells. A focal plane array () detects the electromagnetic radiation transmitted through the photonic band gap array () from the source (). The intensity of the transmitted radiation is proportional to the shift in the photonic band gap edge.

Imaging system and method using a photonic band gap array

A shock wave barrier comprises a periodic structure having the proper symmetry and local contrast modulation of the acoustic index to divert an incident shock wave by using constructive/destructive interference phenomena that produce a 'band gap' in the transmission spectrum of the periodic structure. In general, shock wave energy within the band gap is reflected from the structure. Defect cavities may be formed in the periodic structure to create transmission resonances or 'windows' in the band gap. A portion of the incident energy passes through the window and is concentrated in the defect cavities where it is dissipated by other means. The band gap can be quite wide, at least 50% of the center wavelength, and thus can provide an effective barrier from a wide variety of threats with varying blast pressure and range. The structure may be periodic in two or three dimensions providing a band gap barrier in two or three dimensions, respectively.

Shock wave barrier using multidimensional periodic structures

A composite cable and method provides for control of the cable, and particularly its vibration modes, in response to a wide range of resonant and non-resonant energy input. The cable comprises a non-Newtonian fluid (NNF) in a cavity of a flexible tube. The NNF is characterized by viscosity that varies with shear stress. A load applies shear stress to the NNF changing its viscosity to dampen motion of the cable. The cable may comprise inner and outer tubes that are separated by a NNF. The inner tube may be filled with the same or different NNF, a Newtonian fluid or void. A magnetic field magnetic field may be applied to further control the viscosity of the NNF. The magnetic field may be controlled in response to a sensed condition of the cable indicative of shear stress in the NNF to provide either positive or negative feedback.

Non-newtonian fluid (NNF) filled cable and method

A method of fabricating pillared graphene assembles alternate layers of graphene sheets and fullerenes to form a stable protostructure. Energy is added to the protostructure to break the carbon-carbon bonds at the fullerene-to-graphene attachment points of the protostructure and allow the bonds to reorganize and reform into a stable lower energy unitary pillared graphene nanostructure in which open nanotubes are conjoined between graphene sheets. The attachment points may be functionalized using tether molecules to aid in attachment, and add chemical energy to the system. The arrangement and attachment spacing of the fullerenes may be determined using spacer molecules or an electric potential.

Fabrication of pillared graphene

Carbon nanostructures are synthesized from carbon-excess explosives having a negative oxygen balance. A supercritical fluid provides an environment that safely dissolves and decomposes the explosive molecules into its reactant products including activated C or CO and provides the temperature and pressure for the required collision rate of activated C atoms and CO molecules to form carbon nanostructures such as graphene, fullerenes and nanotubes. The nanostructures may be synthesized without a metal reactant at relatively low temperatures in the supercritical fluid to provide a cost-effective path to bulk fabrication. These nanostructures may be synthesized 'metal free'. As the supercritical fluid provides an inert buffer that does not react with the explosive, the fluid is preserved. Once the nanostructures are removed, the other reaction products may be removed and the fluid recycled.

Growing community of inventors

Tucson, AZ, United States of America

Delmar L Barker