Abstract: An electrocatalytically active ink composition is used with an additive manufacturing process, such as 3D printing, to produce electrodes having consistent, adaptable, and high surface area structures. The electrocatalytically active ink composition includes a mixed powdered precursor and a polymer matrix. The mixed powdered precursor includes a carbon source, a dopant source, and/or a metal-containing catalyst. The material and electrochemical properties of the ink composition may facilitate 3D printing of electrochemically active electrodes for energy conversion and storage devices, and may allow fine-tuning of macro- and microstructures to develop electrodes having improved activity and efficiency.
Type:
Grant
Filed:
May 31, 2019
Date of Patent:
September 27, 2022
Assignee:
TRIAD NATIONAL SECURITY, LLC
Inventors:
Kwan-Soo Lee, Joseph Henry Dumont, Shaylynn LaSonja A. Crum
Abstract: A tag enhances vehicle radar visibility of objects by increasing the effective radar cross-section of the object, allowing detection at longer ranges and providing the vehicle/driver with more time to avoid a collision. The tag may include a receive antenna and a bandpass filter configured to receive a signal from the receive antenna and to allow a portion of the frequency range of the signal from the receive antenna through. The tag may also include an amplifier configured to receive and amplify the signal with the portion of the frequency range from the bandpass filter. The tag may further include a transmit antenna configured to transmit the amplified signal. The receive antenna, the transmit antenna, and the amplifier may be configured such that antenna-to-antenna isolation between the receive antenna and the transmit antenna is greater than a gain of the amplifier.
Type:
Grant
Filed:
September 11, 2018
Date of Patent:
September 20, 2022
Assignee:
Triad National Security, LLC
Inventors:
Stephen Judd, David Guenther, Nicholas Dallmann, William Mairson
Abstract: Random number generators include a thermal optical source and detector configured to produce random numbers based on quantum-optical intensity fluctuations. An optical flux is detected, and signals proportional to optical intensity and a delayed optical intensity are combined. The combined signals can be electrical signals or optical signals, and the optical source is selected so as to have low coherence over a predetermined range of delay times. Balanced optical detectors can be used to reduce common mode noise, and in some examples, the optical flux is directed to only one of a pair of balanced detectors.
Type:
Grant
Filed:
January 21, 2020
Date of Patent:
September 13, 2022
Assignee:
Triad National Security, LLC
Inventors:
Jane Elizabeth Nordholt, Richard John Hughes, Raymond Thorson Newell, Charles Glen Peterson
Abstract: Energy-efficient separation of particulates from fluids is based on determining particulate mass removal as a function of applied energy. Energy-efficient ultrasonic field powers and exposure durations are applied to a particulate containing fluid, and particles removed. In some cases, ultrasonic exposures are selected that provide the maximum particulate removal per applied energy.
Type:
Grant
Filed:
June 18, 2018
Date of Patent:
July 26, 2022
Assignees:
Triad National Security, LLC, SonoSep Technologies Inc.
Inventors:
James E. Coons, Felix Trampler, Benjamin H. J. Yap
Abstract: A camera is used in conjunction with storage phosphor paint, configured to examine a surface. The surface is coated with storage phosphor paint in some embodiments. The camera is configured to image the surface coated with the storage phosphor paint, eliminating requirement of fast relaxation times associated with conventional scanners.
Type:
Grant
Filed:
August 19, 2019
Date of Patent:
July 5, 2022
Assignee:
Triad National Security, LLC
Inventors:
Scott Avery Watson, David Platts, Nicola Maree Winch, Steven Cool
Abstract: This application is directed to use of transition metal-ligand complexes to hydrogenate fluorinated esters and carboxamides into fluorinated hemiacetals. Methods for synthesis of certain ligands are also provided.
Type:
Grant
Filed:
April 1, 2020
Date of Patent:
June 28, 2022
Assignee:
Triad National Security, LLC
Inventors:
Pavel A. Dub, Rami J. Batrice, John C. Gordon
Abstract: A passive radiative thermostat (PRT) is provided. The PRT comprises a phase-change part comprising a thermochromic phase change material; and a wavelength-selector part designed to create electromagnetic resonances in a wavelength range. The wavelength range may include the visible range, the near-infrared range, or the mid-infrared range. The wavelength-selector part may include an electromagnetic cavity resonator or an electromagnetic plasmonic resonator. Further, the phase-change part may include a thermochromic film; and the wavelength-selector part may include a dielectric spacer.
Type:
Grant
Filed:
May 7, 2020
Date of Patent:
June 14, 2022
Assignee:
Triad National Security, LLC
Inventors:
Wilton Junior de Melo Kort-Kamp, Abul Kalam Azad, Matthew Thomas Reiten, Diego Alejandro Roberto Dalvit
Abstract: Synthetic-aperture ultrasound tomography systems and methods using scanning arrays and algorithms configured to simultaneously acquire ultrasound transmission and reflection data, and process the data for improved ultrasound tomography imaging, wherein the tomography imaging comprises total-variation regularization, or a modified total variation regularization, particularly with edge-guided or spatially variant regularization.
Abstract: Processes for tailoring the macroscopic shape, metallic composition, mechanical properties, and pore structure of nanoporous metal foams prepared through combustion synthesis via direct write 3D printing of metal energetic ligand precursor inks made with water and an organic thickening agent are disclosed. Such processes enable production of never before obtainable metal structures with hierarchical porosity, tailorable from the millimeter size regime to the nanometer size regime. Structures produced by these processes have numerous applications including, but not limited to, catalysts, heat exchangers, low density structural materials, biomedical implants, hydrogen storage medium, fuel cells, and batteries.
Type:
Application
Filed:
February 9, 2022
Publication date:
May 26, 2022
Applicant:
Triad National Security, LLC
Inventors:
Bryce Tappan, Andrew Schmalzer, Alexander H. Mueller
Abstract: A pump assisted heat pipe may combine the low mass flow rate required of latent heat pipe transfer loops with a hermetically sealed pump to overcome the typical heat pipe capillary limit. This may result in a device with substantially higher heat transfer capacity over conventional pumped single-phase loops, heat pipes, loop heat pipes, and capillary pumped loops with very modest power requirements to operate. Further, one or more embodiments overcome the gravitation limitations in the conventional heat pipe configuration, e.g., when the heat addition zone is above the heat rejection zone, the capillary forces are required to transfer the liquid from the heat rejection zone to the heat addition zone against gravity.
Type:
Grant
Filed:
March 15, 2018
Date of Patent:
May 24, 2022
Assignee:
Triad National Security, LLC
Inventors:
Robert S. Reid, Robert A. Zimmerman, Cody M. Williams, Morgan T. Biel, Stephen J. Obrey, Todd A. Jankowski, Justin Simpson, Martin J. Ward, Lydia Wermer
Abstract: A nuclear magnetic resonance (NMR) system is configured to detect chemical threat material. The system comprises a magnet configured to generate a magnetic field of about 300 millitesla or less; and a probe configured to detect nuclear relaxation of at least two nuclei selected from the group consisting of 1H, 19F, 31P and 14N, and detect the spin density of nuclei selected from the group consisting of 1H, 19F, 31P and 14N, following excitation.
Type:
Grant
Filed:
March 2, 2020
Date of Patent:
May 24, 2022
Assignee:
Triad National Security, LLC
Inventors:
Robert F. Williams, Michelle A. Espy, Jacob Luther Yoder, Derrick C. Kaseman, Per Erik Magnelind, Algis V. Urbaitis, Michael Timothy Janicke, Ryszard Michalczyk, Jurgen G. Schmidt, Pulak Nath, Scarlett Widgeon Paisner
Abstract: Machine-learning methods and apparatus are disclosed to determine critical state or other parameters related to fluid-driven failure of a terrestrial locale impacted by anthropogenic activities such as hydraulic fracturing, hydrocarbon extraction, wastewater disposal, or geothermal harvesting. Acoustic emission, seismic waves, or other detectable indicators of microscopic processes are sensed. A classifier is trained using time series of microscopic data along with corresponding data of critical state or failure events. In disclosed examples, random forests and artificial neural networks are used, and grid-search or EGO procedures are used for hyperparameter tuning. Once trained, the classifier can be applied to live data from a fluid injection locale in order to assess a frictional state, assess seismic hazard, assess permeability, make predictions regarding a future fluid-driven failure event, or drive engineering solutions for mitigation or remediation. Variations are disclosed.
Type:
Grant
Filed:
December 6, 2019
Date of Patent:
May 24, 2022
Assignee:
Triad National Security, LLC
Inventors:
Paul Allan Johnson, Claudia L. Hulbert, Bertrand Rouet-Leduc
Abstract: The invention provides compositions, methods, and kits for the treatment or prevention of viral infections. The polyvalent (e.g., 2-valent) vaccines described herein incorporate computationally-optimized viral polypeptides that can increase the diversity or breadth and depth of cellular immune response in vaccinated subjects.
Type:
Grant
Filed:
September 10, 2020
Date of Patent:
May 17, 2022
Assignees:
Beth Israel Deaconess Medical Center, Inc., Triad National Security, LLC
Inventors:
Dan H. Barouch, Bette T. Korber, William M. Fischer
Abstract: The present disclosure provides phosphonated polymers that can be used, for example, as polymer electrolyte membranes (PEMs) and/or catalyst ionomeric binders for electrodes in PEM fuel cells, and more particularly for high-temperature PEM fuel cells. High-temperature PEM fuel cells that use phosphonated polymers of the present disclosure suffer from reduced or no acid leaching because, in at least some examples, phosphonic acid moieties are covalently bound to the backbone of the polymers. A phosphonated polymer include a backbone having one or more aromatic monomers, with each aromatic monomer having one or more phosphonic acid groups. A phosphonic acid group may include phosphonic acid or a functional group that is hydrolysable into phosphonic acid.
Abstract: A microwatt fuel cell stack that demonstrates a wide range temperature tolerance, low reactant cross-over and leakage, low internal leakage current, and/or effective water transport is disclosed. Both H2 and O2 may be supplied directly to the fuel cell stack (i.e., dead-ended). One-piece gas diffusion electrodes (GDEs) may serve as both the active electrode and manifold port. Water removal may be accomplished by permeation through the membrane to “fins” exposed by notches in the bipolar plates and gaskets.
Abstract: Embodiments of a system and method are disclosed for obtaining high-energy fuels. In some embodiments, the system and method produces one or more fused cyclic compounds that can include one or more bridging points. The fused cyclic compounds are suitable for use as a high-energy fuels, and may be derived from biomass.
Type:
Grant
Filed:
June 4, 2019
Date of Patent:
April 19, 2022
Assignee:
Triad National Security, LLC
Inventors:
Andrew D. Sutton, Cameron M. Moore, Orion Staples, Troy A. Semelsberger, William L. Kubic, Jr.
Abstract: Apparatus includes a plurality of geological subsurface electrical line sensors spaced apart from each other proximate a predetermined geological subsurface region of interest, with at least one of the electrical line sensors situated as a line source to produce a multi-frequency electrical impedance tomography source signal, and with at least one of the electrical line sensors situated as a line detector to receive the multi-frequency electrical impedance tomography response signal associated with the source signal that propagates through the predetermined geological subsurface region of interest, and a controller including a processor and a memory configured with instructions that, when executed by the processor, cause the processor to determine an electrical mapping over the predetermined geological subsurface region of interest based on the multi-frequency electrical impedance tomography source signal, response signal, and the spatial positions of the geological subsurface electrical line sensors.
Type:
Grant
Filed:
May 22, 2019
Date of Patent:
April 5, 2022
Assignee:
Triad National Security, LLC
Inventors:
Satish Karra, Hari S. Viswanathan, Maruti Kumar Mudunuru, Vamshi Krishna Chillara, Dipen N. Sinha
Abstract: A method for plane-wave or fan-beam ultrasound tomography includes: controlling, by a processor, a multi-channel ultrasound array controller to control a linear ultrasound transducer array to emit plane-wave or fan-beam ultrasound into a biological tissue, the linear ultrasound transducer array including a plurality of transducers; receiving, by the processor, plane-wave or fan-beam ultrasound waveform data from the transducers, the plane-wave or fan-beam ultrasound waveform data including reflections of the plane-wave or fan-beam ultrasound from the biological tissue; computing, by the processor, a synthetic ultrasound-waveform inversion from the received plane-wave or fan-beam ultrasound waveform data; and computing, by the processor, an image of the biological tissue from the synthetic ultrasound-waveform inversion.