Elwha LLC

The Invention Science Fund I LLC

Duke University

Unverferth Manufacturing Company, Inc.

University of California

Other

The Boeing Company

Searete LLC

Toyota Motor Engineering & Manufacturing North America, Inc.

Imperial Innovations Limited

Invitrogen Corporation

Northern Arizona University

The Translational Genomics Research Institute

Elwah LLC

Enterprise Science Fund, LLC

David R Smith

Roderick A Hyde

Clarence T Tegreene

Lowell L Wood, Jr

Jeffrey A Bowers

Tom Driscoll

David Schurig

John Brian Pendry

Charles Whitmer

Yaroslav Aleksandrovich Urzhumov

Jordin T Kare

Edward K Y Jung

Thomas A Weaver

Nathan P Myhrvold

John Desmond Hunt

Nathan Kundtz

Muriel Y Ishikawa

Nathan Ingle Landy

Victoria Y H Wood

Tony S Pan

Siamak Ebadi

Melroy Machado

Milton Perque, Jr

Pai-Yen Chen

Alistair K Chan

Geoffrey Frank Deane

Seyedmohammadreza Faghih Imani

Russell J Hannigan

Jack J Mock

Gleb M Akselrod

Jonah N Gollub

Ruopeng Liu

David Brady

Michael J Hilvers

William C Maenle

Bruce Marshall McWilliams

Alexander Mrozack

Daniel Marks

Timothy A Sleasman

Anthony F Starr

Maiken H Mikkelsen

David Bazeley Tuckerman

Robert C Petroski

Jesse R Cheatham, Iii

Guy Shlomo Lipworth

Matthew Carl Reynolds

Brian James Petersen

Sheldon Schultz

Thomas J Silva

David A Schultz

Michael Boyarsky

William David Duncan

Joseph R Guerci

Patrick Bowen

Tie Jun Cui

Qiang Cheng

Daniel A Roberts

Eric Leuthardt

Elizabeth A Sweeney

William Henry Gates, Iii

Desney S Tan

Paul Henry Dietz

Serdar Hakki Yonak

Nicholas W Touran

Shawn W Gerdeman

Philip A Sullivan

Vinh N Nguyen

David Lawrence Tennenhouse

Thomas Steffan

Insang Yoo

Mark A Recker

Joel Cherkis

Neil Jordan

William Henry Mangione-Smith

Minas Hagop Tanielian

Jungsang Kim

Jay Howard McCandless

Tai Anh Lam

Daniel L Marks

Daniel Arnitz

Joseph Hagerty

Brian C Holloway

Stuart A Wolf

Philipp Braeuninger-Weimer

Alexander Galt Hyde

Loren G Arnold

Dennis J Turnwald

Jae Seung Lee

Eric James Black

Alexander Remley Katko

Brian Mark Deutsch

Paul S Keim

David Engelthaler

Guillermo Sapiro

Ray E Rawson

James M Schupp

Richard Jay Gardner

John Garberson

Rebecca E Colman

Steven Cummer

Various examples of out-of-plane multicolor waveguide holography systems, methods of manufacture, and methods of use are described herein. In some examples, a multicolor waveguide holography system includes a planar waveguide to convey optical radiation between a grating coupler and a metasurface hologram. The grating coupler may be configured to couple out-of-plane optical radiation of three different color incident at three different angles into the planar waveguide. The combined multicolor optical radiation may be conveyed by the waveguide to the metasurface hologram. The metasurface hologram may diffractively decouple the three colors of optical radiation for off-plane propagation to form a multicolor holographic image in free space.

Out-of-plane computer-generated multicolor waveguide holography

A superconductor device includes a high superconductivity transition temperature enhanced from the raw material transition temperature. The superconductor device includes a matrix material and a core material. The enhancing matrix material and the core material together create a system of strongly coupled carriers. A plurality of low-dimensional conductive features can be embedded in the matrix. The low-dimensional conductive features (e.g., nanowires or nanoparticles) can be conductors or superconductors. An interaction between electrons of the low-dimensional conductive features and the enhancing matrix material can promote excitations that increase a superconductivity transition temperature of the superconductor device.

High temperature superconductor

An apparatus includes a traveling-wave antenna array comprising a plurality of adjacent metamaterial surface antennas comprising a waveguide or a cavity, each adjacent metamaterial surface antenna comprising an array of metamaterial radiators coupled to a surface of the waveguide or the cavity, each metamaterial radiator comprising an individually addressable tunable component that can be tuned over a spectral bandwidth to generate different radiation patterns. The apparatus further includes a phase diversity feed coupled to the traveling-wave antenna array and configured to provide adjustable phase diverse input to two or more of the plurality of adjacent metamaterial surface antennas, the phase diverse input comprising a first phase for a first traveling-wave antenna and a second phase for a second traveling-wave antenna, the first phase being different from the second phase, wherein the phase diverse input is-selected to suppress grating lobes for a directed beam pattern selected for transmission.

Phase diversity input for an array of traveling-wave antennas

According to various embodiments, systems and methods for spatial sampling in proximity to the Nyquist limit in traveling-wave antenna systems are disclosed. An apparatus can include a traveling-wave antenna array comprising a plurality of adjacent traveling-wave antennas that each include a plurality of tunable elements that are spaced at, near, or above a Nyquist limit spacing to form an array of tunable elements. The apparatus also includes a phase diversity feed coupled to the traveling-wave antenna array that is configured to provide input to the traveling-wave antenna array including phase diverse input to two or more of the plurality of adjacent traveling-wave antennas. Further, the apparatus includes a plurality of grayscale tuning elements configured to tune the plurality of tunable elements along one or more ranges of one or more tuning variables to form one or more specific output radiation patterns through the traveling-wave antenna array based on the input.

Nyquist sampled traveling-wave antennas

A MIMO communication system is provided. The system may include a first antenna comprising a first cavity, a first plurality of RF ports for generating a feed wave within the first cavity, and a first plurality of sub-wavelength artificially structured material elements as arranged on a surface of the first cavity as RF radiators. The first antenna is configured to generate a plurality of radiation patterns respectively corresponding to the first plurality of ports. The system may also include a second antenna comprising a second cavity and a second plurality of sub-wavelength artificially structured material elements arranged on a surface of the second cavity.

Enhanced MIMO communication systems using reconfigurable metasurface antennas and method using same

According to various embodiments, an array of elements forms an artificially-structured material. The artificially-structured material can also include an array of tuning mechanisms included as part of the array of elements that are configured to change material properties of the artificially-structured material on a per-element basis. The tuning mechanisms can change the material properties of the artificially-structured material by changing operational properties of the elements in the array of elements on a per-element basis based on one or a combination of stimuli detected by sensors included in the array of tuning mechanisms, programmable circuit modules included as part of the array of tuning mechanisms, data stored at individual data stores included as part of the array of tuning mechanisms, and communications transmitted through interconnects included as part of the array of elements.

Artificially-structured materials with smart elements

Systems and methods for designing, optimizing, patterning, forming, and manufacturing symphotic structures are described herein. A symphotic structure may be formed by identifying a continuous refractive index distribution calculated to convert each of a plurality of input reference waves to a corresponding plurality of output object waves. The continuous refractive index distribution can be modeled as a plurality of subwavelength voxels. The system can calculate a symphotic pattern as a three-dimensional array of discrete dipole values to functionally approximate the subwavelength voxels. A symphotic structure may be formed with a volumetric distribution of dipole structures. A dipole value, such as a dipole moment (direction and magnitude) of each dipole is selected for the volumetric distribution to convert a plurality of input reference waves to a target plurality of output object waves.

Symphotic structures

According to various embodiments, systems and methods for suppressing grating lobes in a traveling-wave antenna system are disclosed. An apparatus can include a traveling-wave antenna array comprising a plurality of adjacent traveling-wave antennas. The apparatus also can include a phase diversity feed coupled to the traveling-wave antenna array. The phase diversity feed can be configured to provide phase diverse input to two or more of the plurality of adjacent traveling-wave antennas.

A single frequency, or very narrow frequency band, microwave imaging system is described herein. A microwave imaging system can include an array transmitter; an array receiver; and a computing device that receives signals detected from the array receiver, transforms the signals received by the array receiver into independent spatial measurements, constructs an image using the independent spatial measurements, and outputs a reconstructed image. The array transmitter and the array receiver may each have a plurality of independently controllable metasurface resonant elements.

Single-frequency dynamic metasurface microwave imaging systems and methods of use

Enhanced MIMO communication systems using reconfigurable metasurface antennas and methods of using same

The present disclosure provides systems and methods relating to sensing the presence of a lifeform. In particular, the present disclosure provides systems and methods for detecting the presence of a lifeform in a building or room using dynamic metasurface aperture (DMA), which overcome many limitations of currently available radio frequency (RF) or infrared (IR)-based systems.

Systems and methods for sensing a lifeform using dynamic metasurface antennas

Opto-electronic devices can evaluate convolutional neural networks with reduced power consumption and higher speeds using optical metamaterial structures. Methods and systems for convolution of an input vector f with a kernel k can include a first optical element that is adjustable according to the input vector f and a second optical element that is adjustable according to the kernel k, where either or both elements can include adjustable optical metasurfaces. In some approaches, the second optical element is adjustable according to a Fourier transform of the kernel k and is interposed between first and second lenses or volumetric metamaterials implementing Fourier and inverse Fourier transforms, respectively.

Computation with optical metamaterials

Growing community of inventors

Durham, NC, United States of America

David R Smith