Patents by Inventor Zigeng Liu

Zigeng Liu 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).

  • Method for measuring gas temperature in plasma
    Patent number: 11530955
    Abstract: The present invention discloses a device for measuring gas temperature in plasma, including: a vacuum chamber, a fiber optic temperature sensor, a quartz tube, a circulator, a spectrometer, a broadband light source and a computer. One end of the quartz tube is inserted into the vacuum chamber. The fiber optic temperature sensor is located in the plasma in the vacuum chamber and fixed to the quartz tube. The fiber optic temperature sensor is connected to the circulator by means of an optical fiber passing through the quartz tube. The circulator is connected to the broadband light source and the spectrometer through optical fibers, respectively. The spectrometer is electrically connected to the computer which is configured to read and record spectra collected by the spectrometer.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: December 20, 2022
    Assignee: Dalian University of Technology
    Inventors: Daoman Han, Yongxin Liu, Fei Gao, Zigeng Liu, Zhenguo Jing, Younian Wang
  • METHOD FOR MEASURING GAS TEMPERATURE IN PLASMA
    Publication number: 20210072096
    Abstract: The present invention discloses a device for measuring gas temperature in plasma, including: a vacuum chamber, a fiber optic temperature sensor, a quartz tube, a circulator, a spectrometer, a broadband light source and a computer. One end of the quartz tube is inserted into the vacuum chamber. The fiber optic temperature sensor is located in the plasma in the vacuum chamber and fixed to the quartz tube. The fiber optic temperature sensor is connected to the circulator by means of an optical fiber passing through the quartz tube. The circulator is connected to the broadband light source and the spectrometer through optical fibers, respectively. The spectrometer is electrically connected to the computer which is configured to read and record spectra collected by the spectrometer.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 11, 2021
    Inventors: Daoman Han, Yongxin Liu, Fei Gao, Zigeng Liu, Zhenguo Jing, Younian Wang