Leland Stanford Junior University

Massachusetts Institute of Technology

Toyota Motor Engineering & Manufacturing North America, Inc.

Skycool Systems, Inc.

Samsung Electronics Co., Ltd.

Other

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Boston University

Omniguide Communications

Powx Inc.

Michel J.f. Digonnet

Jonghwa Shin

Shanhui Fan

Vinayak Dangui

John Dimitris Joannopoulos

Michel J F Digonnet

Pierre R Villeneuve

Aaswath Pattabhi Raman

Matthew Austin Terrel

Eden Rephaeli

Olav Solgaard

He Wen

Gordon S Kino

Yoel Fink

Steven G Johnson

Hyang Kyun Kim

Linxiao Zhu

Yi Cui

Hermann A Haus

Leslie Kolodziejski

Mehmet Fatih Yanik

Eli Goldstein

Momchil Minkov

Zongfu Yu

Wonjoo Suh

Mark A Horowitz

Sean P Rodrigues

Yu Shi

Joseph Mardell Kahn

Robert D Meade

Gale Petrich

Seth Lloyd

Eli A Goldstein

Cheng Guo

Sid Assawaworrarit

Wei Li

Marc A Anoma

Ercan Mehmet Dede

Lionel Cooper Kimerling

Alexei A Erchak

Brent Everett Little

Mark Luitzen Brongersma

Wonjae Joo

Edwin Lorimer Thomas

Soojin Kim

Mihai Ibanescu

Ching-Mei Hsu

Erich P Ippen

Chiping Chen

Peter B Catrysse

Meng Xiao

Kevin M Chen

Juhyung Kang

Jia Zhu

Haiwen Wang

Torbjorn Skauli

Joshua N Winn

Tyler William Hughes

Ian Williamson

Parthiban Santhanam

Weiliang Jin

Xiaofang Yu

Zhen Chen

Marin Soljacic

Michal Lipson

Hideo Iizuka

Michel J Digonnet

Elefterios Lidorikis

Gang Zhang

Stephen T Connor

David A B Miller

Meir Orenstein

Bo Zhao

George B Kenney

Elliott R Brown

Christina Manolatou

George Burkhard

Michel Jf Digonnet

Michelle L Povinelli

Daniel J Ripin

Solomon Assefa

Michael Dubrovsky

Lili Xu Cai

Hailiang Wang

Michael J F Digonnet

Michal Lispon

Zhang Wang

Wah Tung Lau

John D Joannopoious

Attila Mekis

Sunil Sandhu

Sven Beiker

Richard E Sassoon

Daniel S Abrams

Oliver B McMahon

E Frederick Schubert

Sunil K Pai

Bogdan Penkovsky

Maynard Marshall Ball, Jr

Nathan Zhao

Po-Chun Hsu

An apparatus for combined digital and optical processing of a cryptocurrency data block includes a digital processor that computes a hash vector from the cryptocurrency data block; a laser and splitter that produces optical input signals; optical modulators that binary phase-shift key modulate the optical input signals based on the hash vector; a photonic matrix multiplier circuit that performs an optically perform a discrete matrix-vector product operation on the modulated optical input signals to produce optical output signals, where the discrete matrix-vector product operation is defined by matrix elements limited to K discrete values, where 2≤K≤17; and photodetectors and comparators that perform optoelectronic conversions of the optical output signals to produce corresponding digital electronic output signals. The digital processor performs a second hash computation on an XOR result between the digital electronic output signals and the hash vector to produce a proof of work result.

Photonic blockchain based on optical proof-of-work

A stacked three-dimensional (3D) metasurface includes a first layer with a first kernel configured to apply a first convolution on a first frequency of an incident polarized light, and a second layer with a second kernel different than the first kernel. The second kernel is configured to apply a second convolution different than the first convolution on a second frequency of the incident polarized light and the second frequency is different than the first frequency such that the stack 3D metasurface provides at least two independent convolutions on the incident polarized light.

Stacked multi-frequency three-dimensional metasurface

The present disclosure is directed toward systems for providing color-selective light detection and/or image sensing in a substantially lossless manner, thereby providing higher and up to nearly perfect optical efficiency. Embodiments disclosed herein include a plurality of pixel-repeat units, each including a color router that is configured to selectively route photons of each wavelength signal in a light signal to a different photodetector of the pixel-repeat unit. In some embodiments, the color router also functions as an anti-reflection coating that mitigates reflection of incident light, as well as a lensing system that directs substantially all photons of each wavelength signal only to their corresponding photodetector. As a result, the photodetectors collect more light than possible using prior-art absorptive color filters, thereby enabling smaller photodetectors to be used. Therefore, scaling of image sensor photodetectors to sub-wavelength sizes is possible.

Color-routers for image sensing

An infrared camera is provided having an uncooled focal plane array with pixels that are read out with visible light instead of electrically. Accordingly, the pixels of the focal plane array are configured to have a visible light reflectivity (at a specific operating wavelength) that is a sensitive function of pixel temperature. One way of providing visible light to such a focal plane array is with a side-illuminated diffractive optical waveguide structure. One way of providing high temperature sensitivity of the pixels is for the pixels to include resonant waveguide grating structures.

Direct thermal infrared vision via nanophotonic detector design

A meta-crystal slab includes photonic structure with an input surface and an output surface, and a plurality of first voxels with a first permittivity and a plurality of second voxels with a second permittivity not equal to the first permittivity disposed between the input surface and the output surface. The photonic structure has a periodicity greater than an operating photonic wavelength 'λ' for general convolution by the photonic structure and the photonic structure is configured to provide an output image with a convolution of an input image.

Meta-crystals slabs for general optical convolution and methods for designing meta-crystal slabs

A dual ring resonator including a base substrate, and a silicon oxide layer positioned on the base substrate having a first waveguide, a primary ring resonator optically coupled to the first waveguide, a second waveguide, and a secondary ring resonator optically coupled to the primary ring resonator and the second waveguide. The dual ring resonator further includes at least one heater disposed partially on the primary ring resonator, and a trench within at least the silicon oxide layer and surrounding at least a portion of the first waveguide and the second waveguide.

Dual ring resonator systems with thermal isolation, optical performance, and reduced transmission loss and methods thereof

A material may be included in a cooling film or cooling panel to achieve cooling even under direct solar irradiation. The material includes one or more constituent materials and an outer surface configured to interact thermally with the atmosphere and with solar radiation. The material exhibits an emissivity of at least 0.8 in spectral range of 5 μm to 15 μm, an ultraviolet reflectivity of at least 0.5 in the spectral range of 275 nm to 375 nm, an ultraviolet absorptivity of at least 0.75 in the spectral range of 275 nm to 375 nm, or a combination thereof. A cooling film, or cooling panel, may be affixed to an exterior surface of a vehicle, structure, or system to provide cooling even under direct solar irradiance.

Radiative cooling systems

Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

Structures for radiative cooling

Example implementations include a textile apparatus for transporting perspiration and heat, the textile apparatus including a substantially planar and heat-conducting substrate including at least one recess, and a textile film including one or more fibers disposed in contact with at least one substantially planar surface of the substrate and at least one surface of the recess. Example implementations also include a method of manufacturing a textile apparatus for transporting perspiration and heat, the method including forming a nanofiber solution, extruding one or more nanofibers from the nanofiber solution, forming one or more recesses in a substantially planar surface of a substrate, and integrating one or more of the nanofibers with the substantially planar surface of the substrate and at least one surface of the recesses.

Systems and methods for heat conducting and biofluid transporting textile

In certain examples, methods and semiconductor structures are directed to an apparatus including source circuitry configured to provide power to other circuitry, with the source circuitry including amplification circuitry (e.g., with a power-switching output) and a source resonator. The amplification circuitry is to provide power to the source resonator with a gain that is dependent on a coupling rate between the source circuitry and other external-receiving circuitry. The source circuitry is also to offset phase delay caused by the amplifier. In operation, the source resonator generates a magnetic field in response to the power, for highly-efficient wirelessly transfer of the power to the other circuitry.

Systems and methods involving wireless power transfer using an amplifier with gain and feedback

Various aspects as described herein are directed to a radiative cooling apparatuses and methods for cooling an object. As consistent with one or more embodiments, a radiative cooling apparatus includes an arrangement of a plurality of different material located at different depths along a depth dimension relative to the object. The plurality of different material includes a solar spectrum reflecting portion configured and arranged to suppress light modes, thereby inhibiting coupling of the incoming electromagnetic radiation, of at least some wavelengths in the solar spectrum, to the object at a range of angles of incidence relative to the depth dimension. Further, the plurality of material includes a thermally-emissive arrangement configured and arranged to facilitate, simultaneously with the inhibiting coupling of the incoming electromagnetic radiation, the thermally-generated electromagnetic emissions from the object at the range of angles of incidence and in mid-IR wavelengths.

Radiative cooling with solar spectrum reflection

An isotropic imaging filter is provided that includes a photonic crystal slab, where the photonic crystal slab includes a square lattice of air through holes, a dielectric constant, a thickness (d), a through hole radius (r), and a lattice constant (a), where the square lattice of air holes are separated according to a value of the lattice constant, where the thickness is configured according to d=M(a), where the through hole radii is configured according to r=N(a), where the thickness and the hole radii are configured to generate isotropic bands of guided resonances of an incident image.

Isotropic filters in spatial frequency domain by a photonic crystal slab

Systems and methods for training photonic neural networks in accordance with embodiments of the invention are illustrated. One embodiment includes a method for training a set of one or more optical interference units (OIUs) of a photonic artificial neural network (ANN), wherein the method includes calculating a loss for an original input to the photonic ANN, computing an adjoint input based on the calculated loss, measuring intensities for a set of one or more phase shifters in the set of OIUs when the computed adjoint input and the original input are interfered with each other within the set of OIUs, computing a gradient from the measured intensities, and tuning phase shifters of the OIU based on the computed gradient.

Training of photonic neural networks through in situ backpropagation

A textile includes: (1) a matrix; and (2) particulate fillers dispersed within the matrix. The textile has a transmittance of infrared radiation at a wavelength of 9.5 μm of at least about 40%, and the textile has a weighted average reflectivity of radiation over a wavelength range of 0.3 μm to 2 μm of at least about 40%.

Spectrally selective textile for passive radiative outdoor personal cooling

In certain examples, methods and semiconductor structures are directed to an apparatus including a photon emitter such as an LED which operates over an emission wavelength range and a photo-voltaic device arranged relative to the photon emitter to provide index-matched optical coupling between the photo-voltaic device and the photon emitter for an emission wavelength range of the photon emitter.

Apparatuses and methods involving DC voltage conversion using photonic transformers

Growing community of inventors

Stanford, CA, United States of America

Shanhui Fan