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Results 1051–1075 of 1,875

Monolithically integrated absolute frequency comb laser system
Patent • #US9391420B2. Rather than down-convert optical frequencies, a QCL laser system directly generates a THz frequency comb in a compact monolithically integrated chip that can be locked to an absolute frequency without the need of a frequency-comb synthesizer. The monolithic, absolute frequency comb can provide a THz frequency reference and tool...

Monolithically Integrated Absolute Frequency Comb Laser System
Featured Opportunity • Laser combs are increasingly used to provide precision measurements. Typical frequency comb systems use non-linear elements, distinct from the laser gain media, to create a set of emission lines with equally spaced frequencies. Separate detectors and/or frequency mixing elements are needed to lock the comb and determine the absolute frequencies...

Monolithically integrated infrared transceiver
Patent • #US10020634B2. A Schottky diode is monolithically integrated into the core of an infrared semiconductor laser (e.g., a quantum cascade laser) to create a heterodyned infrared transceiver. The internal mode field of the infrared semiconductor laser couples to an embedded Schottky diode and can mix the infrared fields to generate a...

Moving bed reactor for solar thermochemical fuel production
Patent • #US8420032B1. Reactors and methods for solar thermochemical reactions are disclosed. Embodiments of reactors include at least two distinct reactor chambers between which there is at least a pressure differential. In embodiments, reactive particles are exchanged between chambers during a reaction cycle to thermally reduce the particles at first conditions and...

Moving target defense for a serial communications system
Patent • #US11133927B1. A moving target defense scheme for a serial communications system is disclosed herein. A bus controller generates and broadcasts a nonce to remote terminals over a bus. The bus controller and the remote terminals generate a randomized sequence based upon the nonce and a shared secret that is shared...

Multi-aperture optical system for high-resolution imaging
Patent • #US10120195B1. Technologies pertaining to a multi-aperture optical imaging system are described herein. The multi-aperture optical system comprises an afocal optical telescope and a plurality of sub-apertures that receive light from the telescope. Each sub-aperture comprises a focusing optic that creates a full-field image onto an individual image sensor that outputs...

Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes
Patent • #US8110636B1. Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion...

Multi-chip photonics transceiver
Patent • #US11726276B1. A photonics transceiver is described herein, wherein the photonics transceiver exhibits improved areal bandwidth density and improved energy per bit consumption relative to conventional photonics transceivers. The photonics transceiver achieves an areal bandwidth density of at least 5 Tbps/mm2 with an energy consumption of less than 500 fJ/bit (sum...

Multi-dimensional cable shorting tool
Patent • #US10468788B1. A device for rendering safe a detonator firing circuit by short circuiting multiple conductors in the circuit includes a base portion and cable piercing members. The base portion has a cylindrical block and apertures for retentively receiving the cable piercing members. The cable piercing member has a first end...

Multi-factor authentication
Patent • #US8868923B1. Detection and deterrence of spoofing of user authentication may be achieved by including a cryptographic fingerprint unit within a hardware device for authenticating a user of the hardware device. The cryptographic fingerprint unit includes an internal physically unclonable function (“PUF”) circuit disposed in or on the hardware device, which...

Multi-frame moving object detection system
Patent • #US11188750B1. A plurality of remote sensing images of a scene are received. A potential target object can be identified in one of the images, wherein the target object has a low signal-to-noise ratio (SNR). A candidate motion path of the target object can be generated based upon the images. A...

Multi-frame Moving Object Detection System (MMODS)
Featured Opportunity • MMODS offers a breakthrough in detection technology for moving objects to enhance real-time detection of low signal-to-noise ratio targets for improved surveillance Traditional detection systems face significant challenges in identifying small objects in real-time, particularly in low-visibility conditions. These limitations hinder their effectiveness in security and surveillance applications, where the...

Multi-Functional Nanomaterials by Surfactant-Assisted Fabrication
Featured Opportunity • Due to current manufacturing methods, nanomaterials suffer from a lack of uniformity resulting in efficiency and reliability issues. Sandia National Laboratories developed an innovative crystallization method that produces well-defined multi-functional nanomaterials. Sandia’s nanomaterials are produced using a seeding and growing process within surfactantconfined nanostructures (micelles, emulsions, and mesophases). This process...

Multi-hypothesis moving object detection system
Patent • #US10032285B1. A method and apparatus for analyzing a sequence of images. Signal-to-noise ratios are identified for potential tracks using a tree having hierarchies of nodes identifying potential positions for an object over a period of time and using the sequence of images. Each hierarchy in the hierarchies of nodes represents...

Multi-Layer Solid Lubricant Architecture for Hammer Drill Components
Featured Opportunity • Researchers at Sandia National Laboratories have developed a coating architecture to replace conventional fluid lubricants with a multi-layer solid lubricant for use in drilling components deployed in extreme conditions. Down-the-hole (DTH) hammer drilling, used in mining, construction, and water well drilling, is arguably the most reliable and successful method for...

Multi-resonant feedback control of a single degree-of-freedom wave energy converter
Patent • #US10423126B2. A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements...

Multi-step contrast sensitivity gauge
Patent • #US8858076B2. An X-ray contrast sensitivity gauge is described herein. The contrast sensitivity gauge comprises a plurality of steps of varying thicknesses. Each step in the gauge includes a plurality of recesses of differing depths, wherein the depths are a function of the thickness of their respective step. An X-ray image...

Multiaxis sensing system for detection of airborne molecules and radionuclides
Patent • #US11940576B1. Various technologies presented herein relate to a method and equipment for detecting both airborne radioisotope and molecular effluent gases. Multi-Axis Sensing can be conducted by utilizing a pressurized MOF sorbent, such as a scintillating Metal-Organic Frameworks (S-MOFs). These MOFs are crystalline nanoporous materials that have synthetic versatility that allow...

Multichannel transistor with improved gate conformation
Patent • #US12068216B1. A multichannel transistor is provided. In the transistor, a plurality of gate fingers overlie a substrate and extend laterally across the substrate from a gate manifold. The gate manifold has a curved edge, and each of the gate fingers projects radially from the curved manifold edge.

Multicolor photonic crystal laser array
Patent • #US9020005B2. A multicolor photonic crystal laser array comprises pixels of monolithically grown gain sections each with a different emission center wavelength. As an example, two-dimensional surface-emitting photonic crystal lasers comprising broad gain-bandwidth III-nitride multiple quantum well axial heterostructures were fabricated using a novel top-down nanowire fabrication method. Single-mode lasing was...

Multifunctional composite coatings for metal whisker mitigation
Patent • #US10178756B1. The present invention relates to composite coatings including particles embedded in a matrix, as well as methods and uses thereof. In some examples, the particles are aligned to enhance mitigation of whisker formation from an underlying metal material. Such coatings can be applied to electrical components, thereby reducing the...

Multifunctional Platelet Composites for Tin Whisker Mitigation
Featured Opportunity • A composite coating with enhanced resistance to whisker penetration and improved thermal conductivity and dielectric properties SEM image showing in-plane orientation of platelets in Sandia's Multifunctional Platelet Composition In order to comply with the Restriction of Hazardous Substances (RoHS) directive, pure tin is replacing lead-tin alloys in commercial electronic devices....

Multifunctional RF limiting amplifier
Patent • #US11722106B1. Multifunctional RF limiting amplifiers having various configurations and functions are disclosed. In a first configuration, the RF limiting amplifier includes an active load output circuit that allows one to adjust the output impedance based upon the anticipated connected load impedance. In a second configuration, the RF limiting amplifier includes...
Results 1051–1075 of 1,875