Patents by Inventor Weijie Su

Weijie Su 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).

  • Nano-Mechanical Infrared Spectroscopy System and Method Using Gated Peak Force IR
    Publication number: 20240168053
    Abstract: An apparatus and method of performing sample characterization with an AFM and a pulsed IR laser directed at the tip of a probe of the AFM. Gated laser pulsing and gated detection based on a lock-in amplifier, boxcar integrator or FFT may be employed in Peak force tapping operation. Nano-spectroscopic measurements with sub-20 nm, and even sub-10 nm resolution can be executed together with nano-mechanical and other property measurements.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 23, 2024
    Inventors: Martin Wagner, Shuiqing Hu, Henry Mittel, Weijie Wang, Chanmin Su, Xiaoji Xu
  • Chitosan optical materials
    Patent number: 6134045
    Abstract: Chitosan-based electro-optic elements are disclosed. An optical waveguide is made from films of chitosan-acetic acid, and from films of chitosan-acetic acid doped with various rare-earth metal ions, over a substrate. Optical limiters are made from chitosan gel host materials doped with a variety of photo-interactive or light limiting dopants. Three different suitable example chitosan gel hosts are disclosed. An electrostatically self-assembling multilayer film is made with a chitosan base layer.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: October 17, 2000
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Hao Jiang, Weijie Su, Thomas M. Cooper