Patents by Inventor Xiaoding Wei

Xiaoding Wei 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).

  • Force, pressure, or stiffness measurement or calibration using graphene or other sheet membrane
    Patent number: 8418547
    Abstract: Force, pressure, or stiffness measurement or calibration can be provided, such as by using a graphene or other sheet membrane, which can provide a specified number of monolayers suspended over a substantially circular well. In an example, the apparatus can include a substrate, including a substantially circular well. A deformable sheet membrane can be suspended over the well. The membrane can be configured to include a specified integer number of one or more monolayers. A storage medium can comprise accompanying information about the suspended membrane or the substrate that, with a deflection displacement response of the suspended membrane to an applied force or pressure, provides a measurement of the applied force or pressure.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: April 16, 2013
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Jeffrey William Kysar, James C. Hone, Changgu Lee, Xiaoding Wei
  • Electrodes to improve reliability of nanoelectromechanical systems
    Publication number: 20110317325
    Abstract: The present invention provides for replacement of conventionally-used metal electrodes in NEMS devices with electrodes that include non-metallic materials comprised of diamond-like carbon or a dielectric coated metallic film having greater electrical contact resistance and lower adhesion with a contacting nanostructure. This reduces Joule heating and stiction, improving device reliability.
    Type: Application
    Filed: June 16, 2011
    Publication date: December 29, 2011
    Inventors: Horacio D. Espinosa, Owen Y. Loh, Xiaoding Wei
  • FORCE, PRESSURE, OR STIFFNESS MEASUREMENT OR CALIBRATION USING GRAPHENE OR OTHER SHEET MEMBRANE
    Publication number: 20110185458
    Abstract: Force, pressure, or stiffness measurement or calibration can be provided, such as by using a graphene or other sheet membrane, which can provide a specified number of monolayers suspended over a substantially circular well. In an example, the apparatus can include a substrate, including a substantially circular well. A deformable sheet membrane can be suspended over the well. The membrane can be configured to include a specified integer number of one or more monolayers. A storage medium can comprise accompanying information about the suspended membrane or the substrate that, with a deflection displacement response of the suspended membrane to an applied force or pressure, provides a measurement of the applied force or pressure.
    Type: Application
    Filed: August 6, 2009
    Publication date: July 28, 2011
    Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Jeffrey William Kysar, James C. Hone, Changgu Lee, Xiaoding Wei