Patent • #US9293627B1. The integration of bilayer graphene with an absorption enhancing sub-wavelength antenna provides an infrared photodetector capable of real-time spectral tuning without filters at nanosecond timescales.
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Subaperture clutter filter with CFAR signal detection
Patent • #US9429644B1. The various technologies presented herein relate to the determination of whether a received signal comprising radar clutter further comprises a communication signal. The communication signal can comprise of a preamble, a data symbol, communication data, etc. A first portion of the radar clutter is analyzed to determine a radar...
Subharmonic power line carrier based island detection systems and methods
Patent • #US10326279B2. Systems and methods for identifying an island condition in a power distribution system and disconnecting distributed generators in the case of islanding. The systems and methods are used to enable reliable detection of island formation with high false-trip immunity, for any combination of distributed energy resources, and for distributed...
Substitutional Tuning of Metal Hydrides for Hydrogen Compression
Featured Opportunity • An alternative to high-pressure hydrogen compression that can isolate thousands of new metal hydride compositions for hydrogen storage applications Hydrogen compression is one of the key components of a hydrogen-based economy. Conventional mechanical hydrogen compressors have a few disadvantages including low energy efficiency, insufficient reliability, high operating costs, probability of...
Suction nozzle
Patent • #US5368560A_. A suction nozzle for attachment to a partial vacuum source for removing smoke and liquid from a surgical area during laser or electrocautery surgery. The nozzle includes a cylindrical inner tube fixedly and concentrically attached within a cylindrical outer tube with the distal end of the inner tube extending...
Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver
Patent • #US8109265B1. A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External...
Super resolution and fast surface B-field imaging using an NV-diamond
Patent • #US12276610B1. The present invention is directed to devices and systems for rapidly producing high resolution images of magnetic fields in a sample. The devices and systems employ diamond chips with color centers that fluoresce in the presence of magnetic fields. The high resolution is due to the use of one...
Superconductivity device comprising a phononic crystal
Patent • #US11424400B1. The invention is directed to a device and method to engineer the superconducting transition width by suppressing the phonon populations responsible for the Cooper-pair decoherence below the superconducting transition temperature via phononic bandgap engineering. The device uses phononic crystals to engineer a phononic frequency gap that suppresses the decohering...
Superlattice photodetector having improved carrier mobility
Patent • #US9929293B1. In a superlattice (SL) photodetector, each period of the SL includes first and second semiconductor layers having different compositions, at least one of which comprises indium arsenide (InAs). At least one of these two semiconductor layers has a graded composition. In embodiments, the first semiconductor layer comprises InAs and...
Superparamagnetic nanoparticles and nanocomposites
Patent • #US10720269B2. The present invention is directed to the syntheses of superparamagnetic nanoparticles and the incorporation of the nanoparticles as the magnetic component to form a strongly magnetic nanocomposite. The superparamagnetic nanoparticles possess no hysteresis and are too small to support eddy currents. The invention uses a ligand exchange procedure to...
Superpixel edges for boundary detection
Patent • #US9389311B1. Various embodiments presented herein relate to identifying one or more edges in a synthetic aperture radar (SAR) image comprising a plurality of superpixels. Superpixels sharing an edge (or boundary) can be identified and one or more properties of the shared superpixels can be compared to determine whether the superpixels...
Superpixels for improved structure and terrain classification using multiple synthetic aperture radar image products
Patent • #US10042048B1. Various embodiments presented herein relate to assigning labels to segments of a synthetic aperture radar (SAR) image, where the segments are based upon a speckle-reduced SAR image product. A plurality of SAR images of a scene are co-registered to form a registered stack of SAR images. A speckle-reduced SAR...
Supply Chain
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Supply-noise-rejecting current source
Patent • #US10090826B1. Various technologies pertaining to a high-impedance current source are described herein. The current source outputs a substantially constant current by way of a first transistor that draws current from a supply. The current source is configured to feed back noise from the supply to a feedback resistor at an...
Supply-noise-rejecting current source
Patent • #US10566936B1. Various technologies pertaining to a high-impedance current source are described herein. The current source outputs a substantially constant current by way of a first transistor that draws current from a supply. The current source is configured to feed-back noise from the supply to a feedback resistor at an input...
Support system, excavation arrangement, and process of supporting an object
Patent • #US9719349B1. A support system, an excavation arrangement, and a process of supporting an object are disclosed. The support system includes a weight-bearing device and a camming mechanism positioned below the weight-bearing device. A downward force on the weight-bearing device at least partially secures the camming mechanism to opposing surfaces. The...
Surface blocking agents
Patent • #US10894913B1. Injectates and method that use surface blocking agents for enhancing subterranean oil recovery are disclosed. The surface blocking agents reduce the adhesion of oil to rock surfaces thereby increasing oil recovery. The surface blocking agents attach to or are attracted to the oils positive nitrogen sites and have an...
Surface engineered nanoparticles for improved surface enhanced Raman scattering applications and method for preparing same
Patent • #US7608461B1. A method for producing metal nanoparticles that when associated with an analyte material will generate an amplified SERS spectrum when the analyte material is illuminated by a light source and a spectrum is recorded. The method for preparing the metal nanoparticles comprises the steps of (i) forming a water-in-oil...
Surface treatment of ultra-high molecular weight polymers
Patent • #US11186945B1. The methods and compounds disclosed herein relate to the surface modification of UHMWPs by means of a catalytic C—H bond insertion catalyst using a rhodium catalysts in conjunction with carbene-generating diazo compounds. The catalytic treatment imparts covalently added functionality to the UHMWPE surface. This functionality acts as an excellent...
Surveillance
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Surveillance and Detection
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Surveillance and Reconnaissance
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Suspended Photovoltaic Elevatable System for Agrivoltaics and Microgrids
Patent •
Suspended waveguides on membrane and needle structures towards photonic atom trap integrated platforms
Patent • #US11914188B1. An atom trap integrated platform (ATIP) comprises a substrate, a membrane, and a suspended waveguide. The substrate has an opening formed therein. The membrane extends across a portion of the substrate opening. The suspended waveguide is formed on the membrane such that the suspended waveguide extends from a first...
SWick Zoom
Featured Opportunity • Traditional zoom imaging requires the mechanical movement of two or more optical elements along the optical axis, as is done in 35mm cameras or conventional, variable-power riflescopes. Adaptive zoom is a revolutionary method whereby true optical zoom is accomplished by cooperatively varying the focal lengths of multiple active optical elements...
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