Patents Assigned to The Government of the United States of America as represented by the Secretary of the Navy
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Patent number: 11789004Abstract: A sensitive and selective, in-line method to measure and validate the sulfur content at ppb levels in both the liquid and gas phase of an analyte. The method includes patterning graphene, for example to form a mesa structure comprising horizontal or vertical lines or an array of multidentate star features; functionalizing the patterned graphene and attaching nanoparticles to the functionalized graphene to form a device; exposing the device to an analyte in the gas or liquid phase; detecting a change in electrical response when sulfur is present in the analyte; and recovering the device for future use. Also disclosed is the related sulfur detector.Type: GrantFiled: April 12, 2021Date of Patent: October 17, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Evgeniya H. Lock, F. Keith Perkins, Anthony K. Boyd, Rachael L. Myers-Ward, David Kurt Gaskill, Anindya Nath
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Patent number: 11788908Abstract: Methods and apparatuses for quantitatively measuring strain in an optical fiber. An optical source comprising an optical beam generator and a pulse generator receives instructions from a controller and generates a pulsed optical beam in response to those instructions. The pulsed optical beam is directed into an optical fiber to generate a reflected beam from scattering centers within the optical fiber. A detector records a plurality of frames of data generated by the reflected beam, and the controller tracks an evolution of a speckle pattern carried by the reflected beam from the plurality of frames and calculates a strain induced in a section of the optical fiber from the evolution of the speckle pattern.Type: GrantFiled: September 21, 2020Date of Patent: October 17, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Matthew J. Murray, Brandon Redding, Allen Davis, Clay Kirkendall
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Patent number: 11789183Abstract: Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.Type: GrantFiled: October 13, 2020Date of Patent: October 17, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Guy Beadie, Richard Flynn, James S. Shirk, Joseph Mait, Predrag Milojkovic
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Publication number: 20230329124Abstract: A single layer of metamagnetic material with exchange bias comprising a single layer of FeRh, wherein the single layer of FeRh comprises ion irradiation, wherein the single layer of FeRh comprising ion irradiation is an exchange bias surface layer, and wherein the single layer of FeRh comprises an interface between a ferromagnetic (FM) region and an antiferromagnetic (AFM) region. A method to create a FM/AFM junction in a single layer of FeRh, comprising the steps of providing a layer of FeRh film, wherein the layer of FeRh film is an antiferromagnetic (AFM) film, implanting ions into the top portion of the FeRh film, creating via the step of implanting ions a ferromagnetic (FM) region in the top region, maintaining the antiferromagnetic (AFM) region of the bottom portion, and creating a FM/AFM junction in the single layer of FeRh.Type: ApplicationFiled: April 1, 2023Publication date: October 12, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Cory D. Cress, Olaf M.J. van ‘t Erve, Steven P. Bennett
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Publication number: 20230324788Abstract: A layer of nanopatterned phase separated block copolymers on an arbitrary surface comprising a first arbitrary substrate absent of chemical preparation, a layer of graphene on the first arbitrary substrate, and a layer of phase-separated block copolymers on the layer of graphene, wherein the layer of phase-separated block copolymers on the layer of graphene was formed on a second substrate and delaminated via water liftoff and wherein the nanopatterned phase separated block copolymers are utilized as a shadow mask for lithography on the first arbitrary substrate.Type: ApplicationFiled: May 26, 2023Publication date: October 12, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee
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Patent number: 11779901Abstract: The invention relates to strong hydrogen-bond acidic sorbents. The sorbents may be provided in a form that limits or eliminates intramolecular bonding of the hydrogen-bond acidic site between neighboring sorbent molecules, for example, by providing steric groups adjacent to the hydrogen-bond acidic site. The hydrogen bond site may be a phenolic structure based on a bisphenol architecture. The sorbents of the invention may be used in methods for trapping or detecting hazardous chemicals or explosives.Type: GrantFiled: April 21, 2022Date of Patent: October 10, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: R. Andrew McGill, Courtney A. Roberts
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Patent number: 11780860Abstract: Cyanophosphines other than P(CN)3 react with lithium dicyanamide to produce lithiated carbon phosphonitrides with mobile Li+ ions.Type: GrantFiled: November 9, 2022Date of Patent: October 10, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Brian L. Chaloux, Andrew P. Purdy, Albert Epshteyn
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Patent number: 11785452Abstract: The invention relates to concealing information within error correction codes of adaptive rate wireless communication systems. In some embodiments, the invention includes selecting a modulation and coding scheme with a more robust error correction capacity than needed by current channel conditions; encoding a hidden message with a pre-shared key that is known by a covert transmitter and a covert receiver, and after a standard message is encoded by a transmitting station of the wireless communication systems, replacing codeword parity bits of codewords in the encoded standard message with the encoded hidden message at designated locations. Before a receiving station of the wireless communication systems decodes the encoded standard message, a covert receiver extracts the embedded hidden message from the encoded standard message, replaces bit values of the embedded hidden message with zero at the designated locations, and decodes the extracted hidden message with the pre-shared key.Type: GrantFiled: January 22, 2021Date of Patent: October 10, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Peter Michael Baab Harley, Murali Tummala, John Colin Mceachen
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Patent number: 11774353Abstract: A standoff chemical detection system that includes a source and detector are provided. The source includes: a controller, memory communicatively connected to the controller, optical sources each constructed to operate over different wavelength ranges, and a power supply. The controller controls the plurality of optical sources to emit respective infrared beams towards a target detection area in a sequential order. The detector includes: an image sensor and a controller that is communicatively connected to the image sensor. Memory and the notification device are also communicatively connected to the controller. The image sensor receives attenuated infrared beams emitted by the optical sources sequentially and at least partially attenuated by chemicals in the target detection area. The controller is constructed to calculate stimulus value signals from the recorded image data and determine whether a hazard chemical is located within the target detection area based on the calculated stimulus value signals.Type: GrantFiled: October 30, 2019Date of Patent: October 3, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Kevin Major, Kenneth Ewing, Jasbinder Sanghera, L. Brandon Shaw
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Patent number: 11776238Abstract: A method of extracting high-frequency temporal information from images or video recorded with a rolling shutter-based imager includes the steps of acquiring image data using the rolling shutter-based imager; and extracting time-domain frequency information from the image data based on two or more lines of pixels in the image data.Type: GrantFiled: September 7, 2021Date of Patent: October 3, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: David Huber, Lena Franklin, Jake Griffiths, William Scharpf
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Publication number: 20230307604Abstract: A method of making an electrode by providing a mixture of first particles of silver or silver oxide and second particles of an inorganic porogen, molding the mixture, cohering the mixture to form a green body, demolding the green body, heating the green body to form a monolith, to convert any silver oxide to silver, and to fuse the first particles together, and submerging the monolith in a liquid that removes the second particles.Type: ApplicationFiled: June 2, 2023Publication date: September 28, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Ryan H. DeBlock, Debra R. Rolison, Jeffrey W. Long, Zachary G. Neale
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Publication number: 20230307232Abstract: A crystallographically-oriented metallic film with a two-dimensional crystal layer comprising a substrate, a metal film on the substrate, the two-dimensional crystal layer on the metal film on the substrate, and a tunable microstructure within the two-dimensional crystal layer on the metal film on the substrate, wherein the metal film has crystallographic registry to the two-dimensional crystal layer.Type: ApplicationFiled: May 17, 2023Publication date: September 28, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jeremy T. Robinson, Jose J. Fonseca Vega, Maxim K. Zalalutdinov
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Patent number: 11767259Abstract: A copper-doped glass formed by placing a target glass in a container, surrounding the target glass with a powder mixture comprised of SiO2 powder and Cu2S powder, wherein the SiO2 powder and the Cu2S powder are mixed according to the formula (SiO2)(1-x)(Cu2S)x, where 0.01<x<0.1, and heated to a temperature of between 800° C. and 1150° C. for a duration of between 1 and 10 hours.Type: GrantFiled: December 10, 2020Date of Patent: September 26, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Brian L. Justus, Alan L. Huston, Barbara A. Marcheschi
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Patent number: 11761892Abstract: Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.Type: GrantFiled: August 20, 2021Date of Patent: September 19, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jerry R. Meyer, Igor Vurgaftman, Chadwick Lawrence Canedy, William W. Bewley, Chul Soo Kim, Charles D. Merritt, Michael V. Warren, R. Joseph Weiblen, Mijin Kim
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Patent number: 11754583Abstract: Apparatuses and methods for generating trace vapors are provided. The apparatus includes a controller and an oven. The controller includes: a processor, a memory storing at least one control program, a clean solution supply port constructed to output a clean solution, an analyte solution supply port constructed to output an analyte solution, a carrier gas inlet port constructed to receive a carrier gas, and a plurality of carrier gas supply controllers constructed to output the carrier gas.Type: GrantFiled: February 14, 2019Date of Patent: September 12, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Greg Collins, Susan Rose-Pehrsson, Michael Malito, Braden C. Giordano, Adam L. Lubrano, Mark H. Hammond, Cy Tamanaha
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Patent number: 11754785Abstract: Methods and apparatuses for mode conversion. An apparatus that includes a substrate, a first waveguide, a second waveguide, a micro-electro-mechanical systems (MEMS) perturber, and a controller is provided. The first waveguide is formed on the substrate includes: (i) an input section, (ii) a bend section, and (iii) an output section. The second waveguide is also formed on the substrate and is disposed adjacent to a portion of the input section of the first waveguide. A portion of the second waveguide is separated from the input section of the first waveguide by a coupling gap. The perturber is disposed above the first waveguide and configured to move between a first position that is distal from a surface of the input section of the first waveguide and a second position that is closer to the surface of the input section of the first waveguide than the second position. The controller is configured to control a movement of the perturber between the first position and the second position.Type: GrantFiled: August 20, 2021Date of Patent: September 12, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Marcel W. Pruessner, Dmitry A. Kozak, Todd H. Stievater, Brian J. Roxworthy
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Publication number: 20230278896Abstract: Apparatus and method for decontaminating both contaminated waters and sorbent filter media, either separately or simultaneously, in a single system. Contaminants in a liquid flowing through a reaction chamber are removed by first generating a plasma within the liquid in the chamber, with the contaminants being broken into smaller particles at the interfaces between the generated plasma and the liquid. The combined plasma-liquid solution is then passed through a solid filter, which captures the smaller contaminant particles to decontaminate the liquid. To decontaminate the filter media, plasma flows through the filter material without the presence of liquid, the plasma reacting with the filter material to remove contaminants previously adsorbed by the filter.Type: ApplicationFiled: March 3, 2023Publication date: September 7, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Scott G. Walton, William A. Maza, Michael J. Johnson, David R. Boris, Vanessa M. Breslin, Grant C. Daniels, Robert B. Balow
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Patent number: 11744834Abstract: A rhodium-loaded porphyrin complex, comprising the porphyrin (meso-tri(4-sulfonatophenyl) mono(4-carboxyphenyl)porphine (C1S3TPP)) with coordinated with rhodium, effectively neutralizes the biological activity of naturally-occurring and synthetic opioids.Type: GrantFiled: April 1, 2020Date of Patent: September 5, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Okhil Nag, Gregory Ellis, Scott Walper, Jeffrey R. Deschamps, D. Andrew Knight, James B. Delehanty
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Patent number: 11747384Abstract: A method to determine noise parameters of a scalable device, is presented in which the determination of the noise parameters of the scalable device is independent of the model adopted for the device. The scalable device is connected as part of a test circuit including a noise source, a recirculator, a first power detector and a second power detector. The first power detector is connected to the recirculator and between the noise source and the scalable device and the second detector is connected to the device under test.Type: GrantFiled: February 18, 2021Date of Patent: September 5, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventor: Luciano Boglione
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Patent number: 11739137Abstract: A number of single domain antibodies (sdAb, also known as nanobodies or VHH) were developed that bind nucleocapsid protein of the SARS-CoV-2 virus. They are useful for detecting the virus and could also find application in therapeutics.Type: GrantFiled: October 28, 2021Date of Patent: August 29, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Ellen R. Goldman, George P. Anderson, Jinny L. Liu, Thomas J. Esparza