Patents by Inventor Jagannath Devkota
Jagannath Devkota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12535425Abstract: One or more embodiments relate to a sensor configuration system comprising at least one device configured to sense a first parameter; at least one device configured to sense a second parameter, and at least one interrogator device. The at least one device configured to sense the second parameter interfaces with the at least one device configured to sense the first parameter, and the at least one interrogator device interfaces both the at least one device configured to sense the first parameter and the at least one device configured to sense the second parameter where the at least one interrogator device spatially interrogates both the at least one device configured to sense the first parameter and the at least one device configured to sense the second parameter.Type: GrantFiled: April 18, 2023Date of Patent: January 27, 2026Assignee: U.S. Department of EnergyInventors: Ruishu F. Wright, Nathan Diemler, Nageswara R. Lalam, Jagannath Devkota, Paul R. Ohodnicki, Jr.
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Publication number: 20260016453Abstract: A method to detect the presence and or concentration of an analyte in the environment of a spoof plasmon sensor having the steps of: providing a spoof plasmon sensor into an environment; interrogating said spoof plasmon sensor with an electromagnetic signal; collecting a modified electromagnetic signal from the spoof plasmon sensor; and analyzing the modified electromagnetic signal to detect an analyte in the environment of the sensor. A spoof plasmon sensor for detecting an analyte having a substrate with a superior surface; and a conductive material disposed on said superior surface, said conductive material defining a waveguide having a dual tapering shape, wherein said waveguide defines spoof plasmon cavities which are exposed substrate, where said substrate is configured to change in permittivity when contacted by an analyte.Type: ApplicationFiled: September 24, 2025Publication date: January 15, 2026Inventors: Roman Shugayev, Jagannath Devkota, Paul R. Ohodnicki, JR.
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Patent number: 12455268Abstract: A method to detect the presence and or concentration of an analyte in the environment of a spoof plasmon sensor having the steps of: providing a spoof plasmon sensor into an environment; interrogating said spoof plasmon sensor with an electromagnetic signal; collecting a modified electromagnetic signal from the spoof plasmon sensor; and analyzing the modified electromagnetic signal to detect an analyte in the environment of the sensor. A spoof plasmon sensor for detecting an analyte having a substrate with a superior surface; and a conductive material disposed on said superior surface, said conductive material defining a waveguide having a dual tapering shape, wherein said waveguide defines spoof plasmon cavities which are exposed substrate, where said substrate is configured to change in permittivity when contacted by an analyte.Type: GrantFiled: January 26, 2023Date of Patent: October 28, 2025Assignee: United States Department of EnergyInventors: Roman Shugayev, Jagannath Devkota, Paul R. Ohodnicki, Jr.
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Publication number: 20250321349Abstract: A distributed electromagnetic interrogation system may include a wellbore, a wellbore casing positioned in the wellbore, and a plurality of conformal helical antennas distributed along the wellbore casing. The plurality of conformal helical antennas may be configured to operate in a radio or microwave frequency range and to propagate electromagnetic radiation along an external propagating mode of the wellbore casing. An interrogator may be coupled to receive and process data from the plurality of conformal helical antennas.Type: ApplicationFiled: April 16, 2024Publication date: October 16, 2025Inventors: Paul R. Ohodnicki, Jagannath Devkota, Roman Shugayev, Ruishu Wright
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Publication number: 20250052696Abstract: Systems and methods using single conductor guided surface electromagnetic (EM) waves to interrogate distant wireless active or passive sensor devices or media surrounding the conductor. The guided waves may be launched on the conductor over a wide frequency range (e.g., MHz to several GHz) using an RF launcher that is connected to an interrogator. Such guided surface EM waves can travel significantly longer distances as compared to the free space propagation of waves because they travel by waveguiding along the conductor surface. Using these waves, power and/or data can be delivered to sensors located on or near the conductor surface, and data can be received from the sensors.Type: ApplicationFiled: August 12, 2024Publication date: February 13, 2025Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATIONInventors: PAUL R. OHODNICKI, JR., JAGANNATH DEVKOTA, DAVID GREVE
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Patent number: 11899080Abstract: The invention provides a method for measuring the magnetic field of an electromagnetic component having the steps of: instrumenting one or more portions of an electromagnetic component by placing an optical fiber in electromagnetic communication with the one or more portions of said electromagnetic component; energizing the electromagnetic component; interrogating the optical fiber using light and an optical detector; and determining changes in the magnetic field incident on the optical fiber based on the detected changes in the light received by the optical detector.Type: GrantFiled: July 19, 2021Date of Patent: February 13, 2024Assignee: United States Department of EnergyInventors: Paul Ohodnicki, Derek Lau, Jagannath Devkota, Michael McHenry, Alex Leary, Richard Beddingfield, Michael Buric
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Publication number: 20230333024Abstract: One or more embodiments relate to a sensor configuration system comprising at least one device configured to sense a first parameter; at least one device configured to sense a second parameter, and at least one interrogator device. The at least one device configured to sense the second parameter interfaces with the at least one device configured to sense the first parameter, and the at least one interrogator device interfaces both the at least one device configured to sense the first parameter and the at least one device configured to sense the second parameter where the at least one interrogator device spatially interrogates both the at least one device configured to sense the first parameter and the at least one device configured to sense the second parameter.Type: ApplicationFiled: April 18, 2023Publication date: October 19, 2023Inventors: Ruishu F. Wright, Nathan Diemler, Nageswara R. Lalam, Jagannath Devkota, Paul R. Ohodnicki, JR.
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Patent number: 11726047Abstract: Materials, methods of making, and methods of sensing liquid droplets with high spatial resolution as a signature of the on-set of corrosion using a hierarchical sensor network A hierarchical sensor network for sensing liquid droplets with high spatial resolution as a signature of the on-set of corrosion, including an interrogation system; and an intermediate sensor array layer in communication with the interrogation system. The network includes an interrogation system and an intermediate sensor array layer in communication with the interrogation system.Type: GrantFiled: October 2, 2018Date of Patent: August 15, 2023Assignee: United States Department of EnergyInventors: Paul R Ohodnicki, Jr., Ping Lu, Ruishu Wright, Jagannath Devkota
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Publication number: 20230243760Abstract: A method to detect the presence and or concentration of an analyte in the environment of a spoof plasmon sensor having the steps of: providing a spoof plasmon sensor into an environment; interrogating said spoof plasmon sensor with an electromagnetic signal; collecting a modified electromagnetic signal from the spoof plasmon sensor; and analyzing the modified electromagnetic signal to detect an analyte in the environment of the sensor. A spoof plasmon sensor for detecting an analyte having a substrate with a superior surface; and a conductive material disposed on said superior surface, said conductive material defining a waveguide having a dual tapering shape, wherein said waveguide defines spoof plasmon cavities which are exposed substrate, where said substrate is configured to change in permittivity when contacted by an analyte.Type: ApplicationFiled: January 26, 2023Publication date: August 3, 2023Inventors: Roman Shugayev, Jagannath Devkota, Paul R. Ohodnicki, JR.
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Patent number: 11513100Abstract: A gas sensor (100,200) includes at least one sensor device including a surface acoustic wave (SAW) device (110) or a quartz crystal microbalance (QCM) device (210), and a layer of metal organic framework (MOF) material (120,220) disposed on each of the at least one sensor device. The at least one sensor device is structured to sense a change in mass of the MOF material.Type: GrantFiled: January 26, 2018Date of Patent: November 29, 2022Assignees: University of Pittsburgh-Of the Commonwealth System of Higher Education, United States Department of EnergyInventors: Christopher E. Wilmer, Jenna Gustafson, Paul R. Ohodnicki, Jagannath Devkota
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Publication number: 20220276179Abstract: Materials, methods of making, and methods of sensing liquid droplets with high spatial resolution as a signature of the on-set of corrosion using a hierarchical sensor network A hierarchical sensor network for sensing liquid droplets with high spatial resolution as a signature of the on-set of corrosion, including an interrogation system; and an intermediate sensor array layer in communication with the interrogation system. The network includes an interrogation system and an intermediate sensor array layer in communication with the interrogation system.Type: ApplicationFiled: October 2, 2018Publication date: September 1, 2022Inventors: Paul R Ohodnicki, JR., Ping Lu, Ruishu Wright, Jagannath Devkota
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Publication number: 20220003826Abstract: The invention provides a method for measuring the magnetic field of an electromagnetic component having the steps of: instrumenting one or more portions of an electromagnetic component by placing an optical fiber in electromagnetic communication with the one or more portions of said electromagnetic component; energizing the electromagnetic component; interrogating the optical fiber using light and an optical detector; and determining changes in the magnetic field incident on the optical fiber based on the detected changes in the light received by the optical detector.Type: ApplicationFiled: July 19, 2021Publication date: January 6, 2022Inventors: Paul Ohodnicki, Derek Lau, Jagannath Devkota, Michael McHenry, Alex Leary, Richard Beddingfield, Michael Buric
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Publication number: 20210404989Abstract: A gas sensor (100,200) includes at least one sensor device including a surface acoustic wave (SAW) device (110) or a quartz crystal microbalance (QCM) device (210), and a layer of metal organic framework (MOF) material (120,220) disposed on each of the at least one sensor device. The at least one sensor device is structured to sense a change in mass of the MOF material.Type: ApplicationFiled: January 26, 2018Publication date: December 30, 2021Applicants: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, UNITED STATES DEPARTMENT OF ENERGYInventors: CHRISTOPHER E. WILMER, JENNA GUSTAFSON, PAUL R. OHODNICKI, JAGANNATH DEVKOTA
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Patent number: 11113594Abstract: Materials, methods of making, and methods of using an integrated wireless detector for real time interrogating metallic tubular structures comprising: an RF patch antenna; a passive surface acoustic wave (SAW) sensor; and data analytic methodologies. An embodiment relates to interrogating a metallic structure having a uniform cross section using an antenna which launches electromagnetic radiation. A sensor may be located within the structure is configured to re-emit electromagnetic radiation modified depending on parameters for which the sensor has been functionalized. An antenna may receive radiation as modified by the sensor, or may receive the transmitted or backscattered radiation directly, without use of a sensor. The antenna then communicates wirelessly with an interrogator providing data which may be used to understand the operational status of the structure in real-time.Type: GrantFiled: July 8, 2019Date of Patent: September 7, 2021Assignee: U.S. Department of EnergyInventors: Paul Ohodnicki, Jagannath Devkota, David W Greve
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Patent number: 10976287Abstract: One or more embodiments relates a single port surface acoustic wave sensor (SAW) device adapted for use in a wide range of operational temperatures and gas phase chemical species. The device includes a piezoelectric crystal substrate; at least one interdigitated electrode/transducer (IDT) positioned on the piezoelectric crystal substrate; and at least one conducting metal oxide film positioned on the piezoelectric crystal substrate and in communication with at least the IDT.Type: GrantFiled: November 28, 2018Date of Patent: April 13, 2021Assignee: U.S. Department of EnergyInventors: Paul R Ohodnicki, Jr., Robert Fryer, Jagannath Devkota
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Publication number: 20200012915Abstract: Materials, methods of making, and methods of using an integrated wireless detector for real time interrogating metallic tubular structures comprising: an RF patch antenna; a passive surface acoustic wave (SAW) sensor; and data analytic methodologies. An embodiment relates to interrogating a metallic structure having a uniform cross section using an antenna which launches electromagnetic radiation. A sensor may be located within the structure is configured to re-emit electromagnetic radiation modified depending on parameters for which the sensor has been functionalized. An antenna may receive radiation as modified by the sensor, or may receive the transmitted or backscattered radiation directly, without use of a sensor. The antenna then communicates wirelessly with an interrogator providing data which may be used to understand the operational status of the structure in real-time.Type: ApplicationFiled: July 8, 2019Publication date: January 9, 2020Inventors: Paul Ohodnicki, Jagannath Devkota, David W Greve
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Publication number: 20190178845Abstract: One or more embodiments relates a single port surface acoustic wave sensor (SAW) device adapted for use in a wide range of operational temperatures and gas phase chemical species. The device includes a piezoelectric crystal substrate; at least one interdigitated electrode/transducer (IDT) positioned on the piezoelectric crystal substrate; and at least one conducting metal oxide film positioned on the piezoelectric crystal substrate and in communication with at least the IDT.Type: ApplicationFiled: November 28, 2018Publication date: June 13, 2019Inventors: Paul R. Ohodnicki, JR., Robert Fryer, Jagannath Devkota