Patents by Inventor Yun-Ki Byeun

Yun-Ki Byeun 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: 8246743
    Abstract: Single-crystal silicon carbide nanowires and a method for producing the nanowires are provided. The single-crystal silicon carbide nanowires have a very high aspect ratio and can be used for the fabrication of nanoelectronic devices, including electron gun emitters and MEMS probe tips, for use in a variety of displays and analyzers. Further provided is a filter comprising the nanowires. The filter is applied to systems for filtering vehicle engine exhaust gases to achieve improved filtering performance and increased lifetime.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: August 21, 2012
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Sung-Churl Choi, Sang-Hoon Lee, Jin-Seok Lee, Yun-Ki Byeun
  • Publication number: 20100293910
    Abstract: Single-crystal silicon carbide nanowires and a method for producing the nanowires are provided. The single-crystal silicon carbide nanowires have a very high aspect ratio and can be used for the fabrication of nanoelectronic devices, including electron gun emitters and MEMS probe tips, for use in a variety of displays and analyzers. Further provided is a filter comprising the nanowires. The filter is applied to systems for filtering vehicle engine exhaust gases to achieve improved filtering performance and increased lifetime.
    Type: Application
    Filed: August 16, 2007
    Publication date: November 25, 2010
    Inventors: Sung Churl Choi, Sang-Hoon Lee, Jin-Seok Lee, Yun-Ki Byeun
  • Patent number: 7575631
    Abstract: The present invention relates to a fabrication method of gallium manganese nitride (GaMnN) single crystal nanowire, more particularly to a fabrication method of GaMnN single crystal nanowire substrate by halide vapor phase epitaxy (HVPE) in which such metal components as gallium (Ga) and manganese (Mn) react with such gas components as nitrogen (N2), hydrogen chloride (HCl) and ammonia (NH3), wherein the amount of the gas components are adjusted to control the Mn doping concentration in order to obtain nanowire having a perfect, one-dimensional, single crystal structure without internal defect, concentration of holes, or carriers, and magnetization value of which being determined by the doping concentration and showing ferromagnetism at room temperature, thus being a useful spin transporter in the field of the next-generation spintronics, such as spin-polarized LED, spin-polarized FET, etc.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 18, 2009
    Assignee: Korea Institute of Science and Technology
    Inventors: Yun-Ki Byeun, Kyong Sop Han, Han Kyu Seong, Heon Jin Choi, Sung Churl Choi
  • Publication number: 20060292055
    Abstract: The present invention relates to a fabrication method of gallium manganese nitride (GaMnN) single crystal nanowire, more particularly to a fabrication method of GaMnN single crystal nanowire substrate by halide vapor phase epitaxy (HVPE) in which such metal components as gallium (Ga) and manganese (Mn) react with such gas components as nitrogen (N2), hydrogen chloride (HCl) and ammonia (NH3), wherein the amount of the gas components are adjusted to control the Mn doping concentration in order to obtain nanowire having a perfect, one-dimensional, single crystal structure without internal defect, concentration of holes, or carriers, and magnetization value of which being determined by the doping concentration and showing ferromagnetism at room temperature, thus being a useful spin transporter in the field of the next-generation spintronics, such as spin-polarized LED, spin-polarized FET, etc.
    Type: Application
    Filed: December 22, 2005
    Publication date: December 28, 2006
    Inventors: Yun-Ki Byeun, Kyong Han, Han Seong, Heon Choi, Sung Choi