Patents by Inventor Mingshaw Wu

Mingshaw Wu 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).

  • Publication number: 20160195657
    Abstract: While gold wire grids have been used to polarize infrared wavelengths for over a hundred years, they are not appropriate for shorter wavelengths due to their large period. With embodiments of the present invention, grids with periods a few tens of nanometers can be fabricated. Among other things, such grids can be used to polarize visible and even ultraviolet light. As a result, such wire grid polarizers have a wide variety of applications and uses, such as, e.g., in the fabrication of semiconductors, nanolithography, and more.
    Type: Application
    Filed: December 23, 2015
    Publication date: July 7, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, Princeton University
    Inventors: Koji Asakawa, Vincent Pelletier, Mingshaw Wu, Douglas Adamson, Richard Register, Paul Chaikin
  • Patent number: 8687274
    Abstract: While gold wire grids have been used to polarize infrared wavelengths for over a hundred years, they are not appropriate for shorter wavelengths due to their large period. With embodiments of the present invention, grids with periods a few tens of nanometers can be fabricated. Among other things, such grids can be used to polarize visible and even ultraviolet light. As a result, such wire grid polarizers have a wide variety of applications and uses, such as, e.g., in the fabrication of semiconductors, nanolithography, and more.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: April 1, 2014
    Assignees: Kabushiki Kaisha Toshiba, Princeton University
    Inventors: Koji Asakawa, Vincent Pelletier, Mingshaw Wu, Douglas H. Adamson, Richard A. Register, Paul M. Chaikin, Young-Rae Hong
  • Publication number: 20090219617
    Abstract: While gold wire grids have been used to polarize infrared wavelengths for over a hundred years, they are not appropriate for shorter wavelengths due to their large period. With embodiments of the present invention, grids with periods a few tens of nanometers can be fabricated. Among other things, such grids can be used to polarize visible and even ultraviolet light. As a result, such wire grid polarizers have a wide variety of applications and uses, such as, e.g., in the fabrication of semiconductors, nanolithography, and more.
    Type: Application
    Filed: October 31, 2006
    Publication date: September 3, 2009
    Applicants: KABUSHIKI KAISHA TOSHIBA, PRINCETON UNIVERSITY
    Inventors: Koji Asakawa, Vincent Pelletier, Mingshaw Wu, Douglas H. Adamson, Richard A. Register, Paul M. Chaikin, Young-Rae Hong
  • Publication number: 20070183025
    Abstract: While gold wire grids have been used to polarize infrared wavelengths for over a hundred years, they are not appropriate for shorter wavelengths due to their large period. With embodiments of the present invention, grids with periods a few tens of nanometers can be fabricated. Among other things, such grids can be used to polarize visible and even ultraviolet light. As a result, such wire grid polarizers have a wide variety of applications and uses, such as, e.g., in the fabrication of semiconductors, nanolithography, and more.
    Type: Application
    Filed: September 19, 2006
    Publication date: August 9, 2007
    Inventors: Koji Asakawa, Vincent Pelletier, Mingshaw Wu, Douglas Adamson, Richard Register, Paul Chaikin
  • Publication number: 20070183035
    Abstract: While gold wire grids have been used to polarize infrared wavelengths for over a hundred years, they are not appropriate for shorter wavelengths due to their large period. With embodiments of the present invention, grids with periods a few tens of nanometers can be fabricated. Among other things, such grids can be used to polarize visible and even ultraviolet light. As a result, such wire grid polarizers have a wide variety of applications and uses, such as, e.g., in the fabrication of semiconductors, nanolithography, and more.
    Type: Application
    Filed: September 19, 2006
    Publication date: August 9, 2007
    Inventors: Koji Asakawa, Vincent Pelletier, Mingshaw Wu, Douglas Adamson, Richard Register, Paul Chaikin
  • Publication number: 20060013956
    Abstract: A method and apparatus is disclosed for providing shear-induced alignment of nanostructures, such as spherical nanodomains, self-assembled nanodomains, and particles, in thin films, such as block copolymer (BCP) thin films. A silicon substrate is provided, and a thin film is formed on the substrate. A pad is then applied to the thin film, and optionally, a weight can be positioned on the pad. Optionally, a thin fluid layer can be formed between the pad and the thin film to transmit shear stress to the thin film. The thin film is annealed and the pad slid in a lateral direction with respect to the substrate to impart a shear stress to the thin film during annealing. The shear stress aligns the nanostructures in the thin film. After annealing and application of the shear stress, the pad is removed, and the nanostructures are uniformly aligned.
    Type: Application
    Filed: December 14, 2004
    Publication date: January 19, 2006
    Inventors: Dan Angelescu, Judith Waller, Mingshaw Wu, Paul Chaikin, Richard Register