Patents by Inventor Chulin Wang

Chulin Wang 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).

  • Publication number: 20240005065
    Abstract: A method, computer program product and system to generate higher resolution geospatial images is provided. A processor receives time sequenced spatial data images at a first resolution. A processor determines from the plurality of spatial data images physics laws applicable to the spatial data images. A processor subdivides each of the plurality of spatial data images into a plurality of small spatial region images. A processor solves each of the physics laws in each of the small spatial region images. A processor trains a neural network to apply each of the physics laws to each small spatial region image by applying a regional physics law loss function. A processor determines the most applicable regional physics law based on the difference between the small spatial region image and the image predicted for that region by the physics law. A processor generates a second higher-resolution image than the first resolution.
    Type: Application
    Filed: June 29, 2022
    Publication date: January 4, 2024
    Inventors: LEVENTE KLEIN, Wang Zhou, Eloisa Bentivegna, Theodore G. van Kessel, Bruce Gordon ELMEGREEN, Chulin Wang
  • Publication number: 20230395112
    Abstract: According to certain aspects of the present disclosure, a device is provided. The device includes a thin film of cobalt. A platinum layer is disposed on the thin film of cobalt. An aluminum layer is disposed on the platinum layer. The aluminum layer disposed on the platinum layer encapsulates the thin film of cobalt. A plurality of electrical contacts is in electrical communication with the thin film of cobalt. Two electrical contacts of the plurality of electrical contacts are configured to receive a write-current therebetween. Four electrical contacts of the plurality of contacts are configured for reading a 4-point resistance.
    Type: Application
    Filed: June 1, 2023
    Publication date: December 7, 2023
    Inventors: Matthew A. Grayson, Pedram Khalili-Amiri, Chulin Wang, Claire Cecelia Onsager, Sevde Nur Arpaci, Victor Lopez Dominguez
  • Publication number: 20230081541
    Abstract: The disclosed 2-D resistance tomographic imaging method optimizes computation speed for performing electrical impedance tomography using a model-space with a minimal number of orthonormal polynomial basis functions to describe discernable features in the 2-D resistance tomographic image, determining a minimal number of contacts to take fewer measurements than available information based on the number of basis functions, selecting a subset of rows of a matrix of calculated sensitivity coefficients to form a square Jacobian matrix for a linearized forward problem to be solved and inversion of the linear forward problem, and solving an inverse problem based on the square Jacobian matrix by performing at least one iteration of a Newton's method solve.
    Type: Application
    Filed: October 25, 2022
    Publication date: March 16, 2023
    Inventors: Matthew Allen Grayson, Chulin Wang, Claire Cecelia Onsager, Can Cenap Aygen, Charles M. Costakis, Lauren E. Lang, Andreas Tzavelis, John Ashley Rogers, Suzan van der Lee
  • Patent number: 11525847
    Abstract: Systems and methods include an electrical switch that establishes a first electrical conducting path between terminals of an electrical measurement apparatus through one or more electrical leads and an electrically-conductive sample in a first state, and a second electrical conducting path between the terminals through the one or more electrical leads while bypassing the sample in a second state. A voltage VS+L is measured across all of the sample and the one or more electrical leads in the first state, while a voltage VL is measured across the one or more electrical leads while bypassing the sample in the second state. Calculations according to the equation VS=VS+L?VL are performed to determine a precision DC voltage measurement of a voltage across the sample VS in the absence of Seebeck voltage offsets contributed by the one or more electrical leads.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: December 13, 2022
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Matthew Grayson, Chulin Wang, Juncen Li, William H. Reinhardt
  • Publication number: 20220099711
    Abstract: Systems and methods include an electrical switch that establishes a first electrical conducting path between terminals of an electrical measurement apparatus through one or more electrical leads and an electrically-conductive sample in a first state, and a second electrical conducting path between the terminals through the one or more electrical leads while bypassing the sample in a second state. A voltage VS+L is measured across all of the sample and the one or more electrical leads in the first state, while a voltage VL is measured across the one or more electrical leads while bypassing the sample in the second state. Calculations according to the equation VS=VS+L?VL are performed to determine a precision DC voltage measurement of a voltage across the sample VS in the absence of Seebeck voltage offsets contributed by the one or more electrical leads.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Inventors: Matthew Grayson, Chulin Wang, Juncen Li, William H. Reinhardt
  • Publication number: 20220007958
    Abstract: The disclosed 2-D and 3-D tomographic resistance imaging method improves tomographic resistance image resolution by adopting an orthogonal basis with the maximum number of elements N to describe the maximum resolution resistivity map ?(r), where this number of elements N is set according to the number of electrodes Q; by defining the orthogonal basis according to any known constraints in the problem, thereby enhancing the resolution where it is needed; by positioning electrodes to be sensitive to these basis functions; and by choosing current I and voltage V contact electrode pairs that maximize signal-to-noise ratio.
    Type: Application
    Filed: November 29, 2019
    Publication date: January 13, 2022
    Inventors: Matthew Allen Grayson, Chulin Wang, Claire Cecelia Onsager, Can Cenap Aygen, Charles M. Costakis, Lauren E. Lang, Andreas Tzavelis, John Ashley Rogers