Patents by Inventor Qiongying Hu

Qiongying Hu 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).

  • Systems and methods for non-periodic pulse partial melt film processing
    Patent number: 9087696
    Abstract: In one aspect, the present disclosure relates to a method of processing a thin film including, while advancing a thin film in a first selected direction, irradiating a first region of the thin film with a first laser pulse and a second laser pulse, each laser pulse providing a shaped beam and having a fluence that is sufficient to partially melt the thin film and the first region re-solidifying and crystallizing to form a first crystallized region, and irradiating a second region of the thin film with a third laser pulse and a fourth laser pulse, each pulse providing a shaped beam and having a fluence that is sufficient to partially melt the thin film and the second region re-solidifying and crystallizing to form a second crystallized region, wherein the time interval between the first laser pulse and the second laser pulse is less than half the time interval between the first laser pulse and the third laser pulse.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 21, 2015
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: James S. Im, Yikang Deng, Qiongying Hu, Ui-Jin Chung, Alexander B. Limanov
  • SYSTEMS AND METHODS FOR NON-PERIODIC PULSE PARTIAL MELT FILM PROCESSING
    Publication number: 20130105807
    Abstract: In one aspect, the present disclosure relates to a method of processing a thin film including, while advancing a thin film in a first selected direction, irradiating a first region of the thin film with a first laser pulse and a second laser pulse, each laser pulse providing a shaped beam and having a fluence that is sufficient to partially melt the thin film and the first region re-solidifying and crystallizing to form a first crystallized region, and irradiating a second region of the thin film with a third laser pulse and a fourth laser pulse, each pulse providing a shaped beam and having a fluence that is sufficient to partially melt the thin film and the second region re-solidifying and crystallizing to form a second crystallized region, wherein the time interval between the first laser pulse and the second laser pulse is less than half the time interval between the first laser pulse and the third laser pulse.
    Type: Application
    Filed: November 2, 2010
    Publication date: May 2, 2013
    Applicant: The Trustees of Columbia University in the city of New York
    Inventors: James S. Im, Yikang Deng, Qiongying Hu, Ui-Jin Chung, Alexander B. Limanov