Patent • #7,124,994. The present invention describes a method for rapidly fabricating a robust 3-dimensional silicon-mold for use in preparing complex metal micro-components. The process begins by depositing a conductive metal layer onto one surface of a silicon wafer. A thin photoresist and a standard lithographic mask are then used to transfer...
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Silicon micro-mold and method for fabrication
Patent • #6,841,339. The present invention describes a method for rapidly fabricating a robust 3-dimensional silicon micro-mold for use in preparing complex metal micro-components. The process begins by depositing a conductive metal layer onto one surface of a silicon wafer. A thin photoresist and a standard lithographic mask are then used to...
Silicon nanowire device and method for its manufacture
Patent • #9,536,947. There is provided an electronic device and a method for its manufacture. The device comprises an elongate silicon nanowire less than 0.5 .mu.m in cross-sectional dimensions and having a hexagonal cross-sectional shape due to annealing-induced energy relaxation.
Silicon photonic heater-modulator
Patent • #9,081,215. Photonic modulators, methods of forming photonic modulators and methods of modulating an input optical signal are provided. A photonic modulator includes a disk resonator having a central axis extending along a thickness direction of the disk resonator. The disk resonator includes a modulator portion and a heater portion. The...
Silicon Photonics
Featured Opportunity • 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 applications. As integrated circuit chips now incorporate over a billion...
Silicon Photonics
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Silicon photonics thermal phase shifter with reduced temperature range
Patent • #8,610,994. Optical devices, phased array systems and methods of phase-shifting an input signal are provided. An optical device includes a microresonator and a waveguide for receiving an input optical signal. The waveguide includes a segment coupled to the microresonator with a coupling coefficient such that the waveguide is overcoupled to...
Silicon-Based Neutron Detector
Featured Opportunity • Sandia has expanded upon research into microstructured semiconductor neutron detectors and created a silicon-based device with greater sensitivity than the current state-of-the-art with adaptability for detection of general particles/radiation. Sandia’s neutron detector is designed with a plurality of vertical pores filled with neutron-sensitive converter material inside a single crystal silicon...
Silicotitanate molecular sieve and condensed phases
Patent • #6,482,380. A new microporous crystalline molecular sieve material having the formula Cs.sub.3 TiSi.sub.3 O.sub.95.cndot.3H.sub.2 O and its hydrothermally condensed phase, Cs.sub.2 TiSi.sub.6 O.sub.15, are disclosed. The microporous material can adsorb divalent ions of radionuclides or other industrial metals such as chromium, nickel, lead, copper, cobalt, zinc, cadmium, barium, and mercury,...
Silver braze alloy
Patent • #6596229. The present invention relates to a silver braze alloy having improved wetting properties. The silver braze alloy consists essentially of from about 52.25 wt % to about 57.0 wt % silver, from about 38.95 to about 43.0 wt % copper, from about 0.5 wt % to about 5.5 wt...
SILVER THICK FILM PASTE HERMETICALLY SEALED BY SURFACE THIN FILM MULTILAYER
Patent • #9,648,740.
Silver-hafnium braze alloy
Patent • #6,663,982. A binary allow braze composition has been prepared and used in a bonded article of ceramic-ceramic and ceramic-metal materials. The braze composition comprises greater than approximately 95 wt % silver, greater than approximately 2 wt % hafnium and less than approximately 4.1 wt % hafnium, and less than approximately...
Simulating current flow through a well casing and an induced fracture
Patent • #10,767,465. A system includes a receiver component that receives a model of a well system, the model comprising a representation of an electrically energized well casing and/or a fracture as a transmission line that leaks electric current as the current traverses the well casing and/or fracture. The receiver component also...
Simulation of human decision making
Patent • #7,370,023. A method for computer emulation of human decision making defines a plurality of concepts related to a domain and a plurality of situations related to the domain, where each situation is a combination of at least two of the concepts. Each concept and situation is represented in the computer...
Simultaneous sample manipulation and sensing using surface acoustic waves
Patent • #7,878,063. The present invention provides a hexagonal, delay line surface acoustic wave device fabricated on a a piezoelectric substrate, such as lithium tantalate, coated with an insulating waveguide on to which a sensing film, such as an anti-human Interleukin-6 biosensor film, is physically absorbed. The acoustic waves that propagate along...
Single Axis Tracking via Sky Imaging and Machine Learning
Featured Opportunity • A machine learning model for estimating the optimal angle of photovoltaics on single axis trackers for improved energy production in cloudy conditions Single axis trackers are commonly used in large photovoltaic (PV) plants to orient the PV modules toward the sun to increase the energy absorbed when the sun is...
Single crystal micromechanical resonator
Patent • #9,641,154. A single crystal micromechanical resonator includes a suspended plate of lithium niobate or lithium tantalate. The suspended plate and a support structure are formed from a single crystal.
Single crystal micromechanical resonator and fabrication methods thereof
Patent • #9,525,398. The present invention relates to a single crystal micromechanical resonator. In particular, the resonator includes a lithium niobate or lithium tantalate suspended plate. Also provided are improved microfabrication methods of making resonators, which does not rely on complicated wafer bonding, layer fracturing, and mechanical polishing steps. Rather, the methods...
Single level microelectronic device package with an integral window
Patent • #6,661,084. A package with an integral window for housing a microelectronic device. The integral window is bonded directly to the package without having a separate layer of adhesive material disposed in-between the window and the package. The device can be a semiconductor chip, CCD chip, CMOS chip, VCSEL chip, laser...
Single particle electrochemical sensors and methods of utilization
Patent • #7,022,287. The present invention discloses an electrochemical device for detecting single particles, and methods for using such a device to achieve high sensitivity for detecting particles such as bacteria, viruses, aggregates, immuno-complexes, molecules, or ionic species. The device provides for affinity-based electrochemical detection of particles with single-particle sensitivity. The disclosed...
Single volume fission energy neutron detector
Patent • #9,835,741. A single volume fission energy neutron detector is described herein. The detector includes a single volume of scintillator. A photodetector is positioned adjacent to a surface of the scintillator, wherein the photodetector has relatively small spatial resolution corresponding thereto and relatively small temporal resolution corresponding thereto. Based upon values...
Single-layer transition metal sulfide catalysts
Patent • #7,951,747. Transition Metal Sulfides (TMS), such as molybdenum disulfide (MoS.sub.2), are the petroleum industry's "workhorse" catalysts for upgrading heavy petroleum feedstocks and removing sulfur, nitrogen and other pollutants from fuels. We have developed an improved synthesis technique to produce SLTMS catalysts, such as molybdenum disulfide, with potentially greater activity and...
Single-resonator double-negative metamaterial
Patent • #9,374,887. Resonances can be tuned in dielectric resonators in order to construct single-resonator, negative-index metamaterials. For example, high-contrast inclusions in the form of metallic dipoles can be used to shift the first electric resonance down (in frequency) to the first magnetic resonance, or alternatively, air splits can be used to...
Single-source synthesis of ceramic oxide nanoparticles
Patent • #10,407,347. The tris(trimethylsilyl)silanol (H-SST) ligand can be reacted with a Group 4 or 5 metal alkoxides in a solvent to form an SST-modified metal alkoxide precursor. Exemplary Group 4 precursors include [Ti(SST).sub.2(OR).sub.2] (OR=OPr.sup.i, OBu.sup.t, ONep); [Ti(SST).sub.3(OBu.sup.n)]; [Zr(SST).sub.2(OBu.sup.t).sub.2(py)]; [Zr(SST).sub.3(OR)] (OR=OBu.sup.t, ONep); [Hf(SST).sub.2(OBu.sup.t).sub.2]; and [Hf(SST).sub.2(ONep).sub.2(py).sub.n] (n=1, 2), where OPr.sup.i=OCH(CH.sub.3).sub.2, OBu.sup.t=OC(CH.sub.3).sub.3, OBu.sup.n=O(CH.sub.2).sub.3CH.sub.3, ONep=OCH.sub.2C(CH.sub.3).sub.3,...
Sintering and ripening resistant noble metal nanostructures
Patent • #8,540,796. Durable porous metal nanostructures comprising thin metal nanosheets that are metastable under some conditions that commonly produce rapid reduction in surface area due to sintering and/or Ostwald ripening. The invention further comprises the method for making such durable porous metal nanostructures. Durable, high-surface area nanostructures result from the formation...
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