Patents by Inventor Alexei L. Gruverman

Alexei L. Gruverman 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).

  • Ultrahigh density ferroelectric storage and lithography by high order ferroic switching
    Patent number: 7292768
    Abstract: A method for switching the direction of polarization in a relatively small domain in a thin-film ferroelectric material whose direction of polarization is oriented normal to the surface of the material involves a step of moving an electrically-chargeable tip into contact with the surface of the ferroelectric material so that the direction of polarization in a region adjacent the tip becomes oriented in a preselected direction relative to the surface of the ferroelectric material. The tip is then pressed against the surface of the ferroelectric material so that the direction of polarization of the ferroelectric material within the area of the ferroelectric material in contact with the tip is reversed under the combined effect of the compressive influence of the tip and electric bias.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: November 6, 2007
    Assignee: UT-Battelle, LLC
    Inventors: Sergei V. Kalinin, Arthur P. Baddorf, Ho Nyung Lee, Junsoo Shin, Alexei L. Gruverman, Edgar Karapetian, Mark Kachanov