Patents by Inventor Yong-Qing Li

Yong-Qing Li 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).

  • Patent number: 6897950
    Abstract: Methods and systems for studying microscopic particles are provided. An optical trap for a selected microscopic particle can be formed with a laser beam at a first power level. The laser beam can have a variable power level associated therewith. The variable power level can be increased to a second power level. The laser beam at the second power level can produce Raman scattering signals. The second power level can provide sufficient excitation energy to the selected microscopic particle to produce Raman scattering signals and the second power level is higher than the first power level. A Raman spectrum can be detected from the Raman scattering signals produced by the laser beam at the second power level.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: May 24, 2005
    Assignee: East Carolina University
    Inventors: Yong-Qing Li, Mumtaz A. Dinno
  • Publication number: 20040012778
    Abstract: Methods and systems for studying microscopic particles are provided. An optical trap for a selected microscopic particle can be formed with a laser beam at a first power level. The laser beam can have a variable power level associated therewith. The variable power level can be increased to a second power level. The laser beam at the second power level can produce Raman scattering signals. The second power level can provide sufficient excitation energy to the selected microscopic particle to produce Raman scattering signals and the second power level is higher than the first power level. A Raman spectrum can be detected from the Raman scattering signals produced by the laser beam at the second power level.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Inventors: Yong-Qing Li, Mumtaz A. Dinno