Patents by Inventor Lu-Chang Qin

Lu-Chang Qin 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: 8501136
    Abstract: A method for preparing single-crystalline, rare-earth metal hexaboride nanowires by a chemical vapor deposition process is described. Also described are the nanowires themselves, the electron emitting properties of the nanowires, and the use of the nanowires in electron emitting devices, particularly as point electron sources.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: August 6, 2013
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Lu-Chang Qin, Han Zhang, Qi Zhang, Jie Tang
  • Publication number: 20100028235
    Abstract: A method for preparing single-crystalline, rare-earth metal hexaboride nanowires by a chemical vapor deposition process is described. Also described are the nanowires themselves, the electron emitting properties of the nanowires, and the use of the nanowires in electron emitting devices, particularly as point electron sources.
    Type: Application
    Filed: February 6, 2007
    Publication date: February 4, 2010
    Inventors: Lu-Chang Qin, Han Zhang, Qi Zhang, Jie Tang
  • Publication number: 20070014148
    Abstract: Methods and systems are provided for attaching one or magnetic nanowires to an object and apparatuses formed therefrom. An electrophoresis method for attaching one or more nanowires to a sharp tip of an object can include including providing one or more magnetic nanowires in a liquid medium. The method can also include positioning a sharp tip of an object in the liquid medium. Further, the method can include applying an electrical field to the liquid medium for attaching the one or more magnetic nanowires to the sharp tip.
    Type: Application
    Filed: March 16, 2006
    Publication date: January 18, 2007
    Inventors: Otto Zhou, Guang Yang, Jie Tang, Lu-Chang Qin
  • Publication number: 20070007142
    Abstract: A method for depositing a nanostructure-containing material onto an object or substrate includes one or more of the following: (1) forming a solution or suspension of nanostructure-containing material, (2) selectively adding “chargers” to the solution, (3) immersing electrodes in the solution, the substrate or object upon which the nanostructure material is to be deposited acting as one of the electrodes, (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode, and (5) subsequent optional processing of the coated substrate. Associated objects and devices are also provided. A method for separating nanostructures based on their properties and/or geometry is also described.
    Type: Application
    Filed: March 13, 2006
    Publication date: January 11, 2007
    Inventors: Otto Zhou, Jie Tang, Huaizhi Geng, Lu-Chang Qin, Jian Zhang, Guang Yang
  • Patent number: 7014743
    Abstract: A method for depositing a nanostructure-containing material onto an object or substrate includes one or more of the following: (1) forming a solution or suspension of nanostructure-containing material, (2) selectively adding “chargers” to the solution, (3) immersing electrodes in the solution, the substrate or object upon which the nanostructure material is to be deposited acting as one of the electrodes, (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode, and (5) subsequent optional processing of the coated substrate. Associated objects and devices are also provided. A method for separating nanostructures based on their properties and/or geometry is also described.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: March 21, 2006
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Otto Z. Zhou, Jie Tang, Huaizhi Geng, Lu-Chang Qin, Jian Zhang, Guang Yang
  • Publication number: 20040173378
    Abstract: A method for depositing a nanostructure-containing material onto an object or substrate includes one or more of the following: (1) forming a solution or suspension of nanostructure-containing material, (2) selectively adding “chargers” to the solution, (3) immersing electrodes in the solution, the substrate or object upon which the nanostructure material is to be deposited acting as one of the electrodes, (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode, and (5) subsequent optional processing of the coated substrate. Associated objects and devices are also provided. A method for separating nanostructures based on their properties and/or geometry is also described.
    Type: Application
    Filed: December 9, 2003
    Publication date: September 9, 2004
    Applicant: UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Otto Z. Zhou, Jie Tang, Huaizhi Geng, Lu-Chang Qin, Jian Zhang, Guang Yang