Patents by Inventor Zhizhen MA

Zhizhen MA 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).

  • Graphene-based plasmonic slot electro-optical modulator
    Patent number: 10663766
    Abstract: An electro-optical modulator using a graphene-based plasmonic slot is disclosed. The electro-optical modulator is comprised of a substrate layer, a dielectric spacer, a graphene layer, a first metal layer, and a second metal layer. The metal layers create a plasmonic slot that modulates between a light absorptive and light transparent state depending on the application of voltage across the modulator. Two or four graphene layers may be used to reduce power consumption and the size of the modulator.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 26, 2020
    Assignee: The George Washington University
    Inventors: Zhizhen Ma, Volker J. Sorger
  • GRAPHENE-BASED PLASMONIC SLOT ELECTRO-OPTICAL MODULATOR
    Publication number: 20180246350
    Abstract: An electro-optical modulator using a graphene-based plasmonic slot is disclosed. The electro-optical modulator is comprised of a substrate layer, a dielectric spacer, a graphene layer, a first metal layer, and a second metal layer. The metal layers create a plasmonic slot that modulates between a light absorptive and light transparent state depending on the application of voltage across the modulator. Two or four graphene layers may be used to reduce power consumption and the size of the modulator.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Inventors: Zhizhen MA, Volker J. SORGER