Patents by Inventor Haifeng Xuan

Haifeng Xuan 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: 11947163
    Abstract: In one aspect, the disclosure relates to multi-material fibers capable of distributedly measuring temperature and pressure in which the methods comprise a thermal drawing step, and the methods of fabricating the disclosed fibers. The fibers can be utilized in methods of temperature and pressure mapping or sensing comprising electrical reflectometry for interrogation. Further disclosed are devices comprising a disclosed fiber with the multi-point detection capability with simple one-end connection. Also disclosed are articles, e.g., smart clothing, wound dressing, robotic skin and other industrial products, comprising a disclosed fiber or a fabric comprising a disclosed fiber. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 2, 2024
    Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Xiaoting Jia, Anbo Wang, Haifeng Xuan, Li Yu
  • Publication number: 20200386939
    Abstract: In one aspect, the disclosure relates to multi-material fibers capable of distributedly measuring temperature and pressure in which the methods comprise a thermal drawing step, and the methods of fabricating the disclosed fibers. The fibers can be utilized in methods of temperature and pressure mapping or sensing comprising electrical reflectometry for interrogation. Further disclosed are devices comprising a disclosed fiber with the multi-point detection capability with simple one-end connection. Also disclosed are articles, e.g., smart clothing, wound dressing, robotic skin and other industrial products, comprising a disclosed fiber or a fabric comprising a disclosed fiber. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 10, 2020
    Inventors: Xiaoting Jia, Anbo Wang, Haifeng Xuan, Li Yu
  • Publication number: 20150353996
    Abstract: A label free, reusable and high sensitivity viral fiber sensor is provided in the present invention. The label free, high sensitivity and reusability are the advantages of this sensor. Long Period Microfiber Grating (LPMFG) is used for the sensing device. It allows optically detecting the change in refractive index at the grating surface with an extra high sensitivity. This provides an optical detection method to monitor DNA Hybridization. The single stranded DNA (ssDNA) probe is immobilized onto the LPMFG's surface for hybridizing with a DNA sample in order to identify the viral strain in the sample. This LPMFG-based viral sensor functions by inducing a refractive index change on the grating surface through the bio-molecule binding between the target viral ssDNA and the immobilized probe ssDNA. Regeneration of a surface-immobilized probe without a significant loss of hybridization activity retains at least 10 successive assays without any significant loss of performance (less than 10% decrease).
    Type: Application
    Filed: May 10, 2015
    Publication date: December 10, 2015
    Inventors: Yeuk Lai HOO, Haifeng XUAN, Ka Lok WU, Xin SHI, Tik Ho LAU, Peter Wai Man LEE
  • Patent number: 7796854
    Abstract: A hollow-core photonic bandgap fiber polarizer may include a core, an inner cladding surrounding the core, the inner cladding including a plurality of capillaries, and an outer cladding at least partially surrounding the inner cladding. A section of the capillaries distal to the core is asymmetric relative to a section of the capillaries proximal to the core.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: September 14, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Wei Jin, Haifeng Xuan
  • Publication number: 20090220186
    Abstract: A hollow-core photonic bandgap fiber polarizer may include a core, an inner cladding surrounding the core, the inner cladding including a plurality of capillaries, and an outer cladding at least partially surrounding the inner cladding. A section of the capillaries distal to the core is asymmetric relative to a section of the capillaries proximal to the core.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 3, 2009
    Applicant: Hong Kong Polytechnic University
    Inventors: Wei Jin, Haifeng Xuan