Patents by Inventor Minhwan Lee

Minhwan Lee 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).

  • Electrochemical nano-patterning using ionic conductors
    Patent number: 7253409
    Abstract: The present invention provides nano-patterning based on flow of an ion current within an ionic conductor to bring ions in proximity to a microscope probe tip touching a surface of the conductor. These ions are then electrochemically reduced to form one or more features on the surface. Ion current flow and the electrochemical reaction are driven by an electrical potential difference between the tip and the ionic conductor. Such features can be erased by reversing the polarity of the potential difference. Indentations can be formed by mechanically removing features formed as described above. The ions in the ion current can be provided by the ionic conductor and/or by oxidation at a counter electrode.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: August 7, 2007
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Minhwan Lee, Ryan O′Hayre, Turgut M. Gur, Friedrich B. Prinz
  • Electrochemical nano-patterning using ionic conductors
    Publication number: 20060284085
    Abstract: The present invention provides nano-patterning based on flow of an ion current within an ionic conductor to bring ions in proximity to a microscope probe tip touching a surface of the conductor. These ions are then electrochemically reduced to form one or more features on the surface. Ion current flow and the electrochemical reaction are driven by an electrical potential difference between the tip and the ionic conductor. Such features can be erased by reversing the polarity of the potential difference. Indentations can be formed by mechanically removing features formed as described above. The ions in the ion current can be provided by the ionic conductor and/or by oxidation at a counter electrode.
    Type: Application
    Filed: July 20, 2005
    Publication date: December 21, 2006
    Inventors: Minhwan Lee, Ryan O'Hayre, Turgut Gur, Friedrich Prinz