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Results 1226–1250 of 1,876

Photocatalytic methods for preparation of electrocatalyst materials
Patent • #US8609573B2. The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in proton exchange membrane fuel cells (PEM-FCs).

Photocatalytic methods for preparation of electrocatalyst materials
Patent • #US10186711B2. The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in proton exchange membrane fuel cells (PEM-FCs).

Photoconductive metasurface-based ultrafast device
Patent • #US11749694B1. A theoretically perfectly absorbing photoconductive all-dielectric metasurface is provided. This metasurface can improve the efficiency and performance of ultrafast photoconductive switches and detectors. In an embodiment, the metasurface is incorporated in photoconductive THz switches or detectors. In embodiments, the metasurface is constituted by a network of gallium arsenide resonators....

Photoelectrochemically driven self-assembly method
Patent • #US9548411B2. Various technologies described herein pertain to assembling electronic devices into a microsystem. The electronic devices are disposed in a solution. Light can be applied to the electronic devices in the solution. The electronic devices can generate currents responsive to the light applied to the electronic devices in the solution,...

Photolithography of atomic layer resist
Patent • #US11424135B1. In a method of atomic precision advanced manufacturing (APAM), an atomic or molecular resist layer on a substrate surface is selectively depassivated by locally exciting the substrate surface with an optical beam effective to eject adsorbed atoms or molecules from the substrate surface. The substrate surface is further processed...

Photon detector configured to employ the Gunn effect and method of use
Patent • #US8981312B1. Embodiments disclosed herein relate to photon detectors configured to employ the Gunn effect for detecting high-energy photons (e.g., x-rays and gamma rays) and methods of use. In an embodiment, a photon detector for detecting high-energy photons is disclosed. The photon detector includes a p-i-n semiconductor diode having a p-type...

Photon energy conversion by near-zero permittivity nonlinear materials
Patent • #US9846348B2. Efficient harmonic light generation can be achieved with ultrathin films by coupling an incident pump wave to an epsilon-near-zero (ENZ) mode of the thin film. As an example, efficient third harmonic generation from an indium tin oxide nanofilm (λ/42 thick) on a glass substrate for a pump wavelength of...

Photonic integrated circuits for generating high-brightness squeezed light
Patent • #US11226502B1. A high-brightness squeezed light source includes a plurality of light squeezing elements and a photonic summing device. The light squeezing elements each output respective squeezed light responsive to receipt of unsqueezed light. The photonic summing device receives the squeezed light output by each of the light squeezing elements and...

Photonic Integrated Circuits/Si Photonics
Portfolio • Advanced optical components for next generation computing, communication, and sensing To support next generation computing, communication, and sensing needs, Sandia researchers have successfully developed a silicon photonics platform that leverages the semiconductor and nanotechnology capabilities of Sandia’s Microsystems and Engineering Sciences Applications (MESA) complex to create optical components for multiple...

Photonic-crystal-fiber-delivered laser-triggered high-voltage gas switch
Patent • #US10687412B1. A photonic-crystal-fiber-delivered laser-triggered high-voltage gas switch can deliver a peak irradiance of greater than 5.1×1011 W/cm2 to the AK gap for a laser having a wavelength of 1064 nm. The switch is capable of operating at pressures up to 2200 psi; voltages across the gap of greater than 200...

Photonic-powered cable assembly
Patent • #US8358893B1. A photonic-cable assembly includes a power source cable connector (PSCC) coupled to a power receive cable connector (PRCC) via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit...

Photonic-powered cable assembly
Patent • #US8761560B1. A photonic-cable assembly includes a power source cable connector (“PSCC”) coupled to a power receive cable connector (“PRCC”) via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit...

Photonics & Lasers
Technology Area • The Photonics & Lasers technology area contains advanced solutions ranging from high energy laser systems to photonic microsystems. Sandia technologies in photonic sources have been licensed for defense, semiconductor chip manufacturing, thermal imaging, and consumer electronics.    This technology area contains specialized portfolios related to:  Imaging SystemsLight Emitting Diodes (LEDs) Infrared (IR) Sources...

Photovoltaic array for a power-by-light system
Patent • #US11476376B2. A hybrid-integrated series/parallel-connected photovoltaic diode array employs 10s-to-100s of single-wavelength III-V compound semiconductor photodiodes in an array bonded onto a transparent optical plate through which the array is illuminated by monochromatic light. The power-by-light system receiver enables high-voltage, up to 1000s of volts, optical transmission of power to remote...

Photovoltaic cell with light trapping for enhanced efficiency
Patent • #US9190542B1. The efficiency of a photovoltaic cell is enhanced by light trapping using Mie-scattering nanostructures. In one embodiment, an array of nanocylinders is formed on the front surface of a silicon film to enhance forward scattering into the film, and an array of nanocylinders is formed on the back surface...

Photovoltaic cell with nano-patterned substrate
Patent • #US9472702B1. A photovoltaic solar cell comprises a nano-patterned substrate layer. A plurality of nano-windows are etched into an intermediate substrate layer to form the nano-patterned substrate layer. The nano-patterned substrate layer is positioned between an n-type semiconductor layer composed of an n-type semiconductor material and a p-type semiconductor layer composed...

Photovoltaic power generation system free of bypass diodes
Patent • #US9093586B2. A photovoltaic power generation system that includes a solar panel that is free of bypass diodes is described herein. The solar panel includes a plurality of photovoltaic sub-modules, wherein at least two of photovoltaic sub-modules in the plurality of photovoltaic sub-modules are electrically connected in parallel. A photovoltaic sub-module...

Photovoltaic Prognostics
Featured Opportunity • Photovoltaic (PV) System Monitoring Overview Residential, commercial, and utility-scale photovoltaic (“PV”) solar systems are being rapidly deployed in the United States. With the recent passage of the Inflation Reduction Act, demand for PV systems is only expected to increase. Larger-scale PV systems operate akin to a small power generator. During...

Photovoltaic solar concentrator
Patent • #US9126392B1. A process including forming a photovoltaic solar cell on a substrate, the photovoltaic solar cell comprising an anchor positioned between the photovoltaic solar cell and the substrate to suspend the photovoltaic solar cell from the substrate. A surface of the photovoltaic solar cell opposite the substrate is attached to...

Physical context management for a motor vehicle
Patent • #US7610130B1. Computer software for and a method of enhancing safety for an operator of a motor vehicle comprising employing a plurality of sensors of vehicle and operator conditions, matching collective output from the sensors against a plurality of known dangerous conditions, and preventing certain activity of the operator if a...

Piezoelectric deformable photonic devices
Patent • #US11569431B1. A CMOS-compatible actuator platform for implementing phase, amplitude, and frequency modulation in silicon nitride photonic integrated circuits via piezo-optomechanical coupling using tightly mechanically coupled aluminum nitride actuators is disclosed. The platform, which may be fabricated in a CMOS foundry, enables scalable active photonic integrated circuits for visible wavelengths, and...

Piezoelectric Deformable Photonic Devices
Featured Opportunity • A flexible optical platform for phase and amplitude modulation in silicon nitride photonic integrated circuits that offers low optical loss, visible wavelength operation, low power consumption, and performance in cryogenic operating temperatures. Sandia researchers have developed a flexible optical platform for phase and amplitude modulation in silicon nitride (Si3N4) photonic...
Results 1226–1250 of 1,876