Patents by Inventor Sang-Eon Han

Sang-Eon Han 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).

  • Supressing optical loss in nanostructured metals by increasing self-inductance and electron path length
    Patent number: 9246031
    Abstract: An optoelectronic device configured to operate at an electromagnetic radiation frequency having metal wire electrodes that are optically transparent as a result of the wires having an effective plasma frequency that is equal to or lower than the electromagnetic frequency at which the device operates. The effective plasma frequency of the wire is lowered by configuring the path of the wire between the terminal ends to be meandering, serpentine, U-shaped and in other non-linear configurations.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: January 26, 2016
    Assignee: STC.UNM
    Inventors: Sang Eon Han, Samuel Clark
  • REPLICATION OF PATTERNED THIN-FILM STRUCTURES FOR USE IN PLASMONICS AND METAMATERIALS
    Publication number: 20150179938
    Abstract: The present invention provides templating methods for replicating patterned metal films from a template substrate such as for use in plasmonic devices and metamaterials. Advantageously, the template substrate is reusable and can provide plural copies of the structure of the template substrate. Because high-quality substrates that are inherently smooth and flat are available, patterned metal films in accordance with the present invention can advantageously provide surfaces that replicate the surface characteristics of the template substrate both in the patterned regions and in the unpatterned regions.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Inventors: David J. Norris, Sang Eon Han, Prashant Nagpal, Aditya Bhan, Nathan Charles Lindquist, Sang-Huyn Oh
  • Replication of patterned thin-film structures for use in plasmonics and metamaterials
    Patent number: 8948562
    Abstract: The present invention provides templating methods for replicating patterned metal films from a template substrate such as for use in plasmonic devices and metamaterials. Advantageously, the template substrate is reusable and can provide plural copies of the structure of the template substrate. Because high-quality substrates that are inherently smooth and flat are available, patterned metal films in accordance with the present invention can advantageously provide surfaces that replicate the surface characteristics of the template substrate both in the patterned regions and in the unpatterned regions.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: February 3, 2015
    Assignee: Regents of the University of Minnesota
    Inventors: David J. Norris, Sang Eon Han, Aditya Bhan, Prashant Nagpal, Nathan Charles Lindquist, Sang-Hyun Oh
  • NANOSTRUCTURED ARRAYS FOR RADIATION CAPTURE STRUCTURES
    Publication number: 20130014814
    Abstract: Silicon nanohole arrays are disclosed as light absorbing structures for various devices such as solar photovoltaics. To obtain the same ultimate efficiency as a standard 300 micrometer crystalline silicon wafer, nanohole arrays require less silicon by mass. Moreover, calculations suggest that nanohole arrays may have efficiencies superior to nanorod arrays for practical thicknesses. With well-established fabrication techniques, nanohole arrays have great potential for efficient solar photovoltaics.
    Type: Application
    Filed: January 10, 2011
    Publication date: January 17, 2013
    Applicant: Massachusetts Institute of Technology
    Inventors: Sang Eon Han, Anastassios Mavrokefalos, Matthew Sanders Branham, Gang Chen
  • REPLICATION OF PATTERNED THIN-FILM STRUCTURES FOR USE IN PLASMONICS AND METAMATERIALS
    Publication number: 20120161600
    Abstract: The present invention provides templating methods for replicating patterned metal films from a template substrate such as for use in plasmonic devices and metamaterials. Advantageously, the template substrate is reusable and can provide plural copies of the structure of the template substrate. Because high-quality substrates that are inherently smooth and flat are available, patterned metal films in accordance with the present invention can advantageously provide surfaces that replicate the surface characteristics of the template substrate both in the patterned regions and in the unpatterned regions.
    Type: Application
    Filed: November 24, 2009
    Publication date: June 28, 2012
    Inventors: David J. Norris, Sang Eon Han, Aditya Bhan, Prashant Nagpal, Nathan Charles Lindquist, Sang-Hyun Oh
  • Acrylic adhesive compositions for polarizing film and the polarizer film using the same
    Patent number: 6800366
    Abstract: The present invention provides an acrylic pressure sensitive adhesive composition having an element with a positive stress optical coefficient for a polarizing film and a polarizing film using the same.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: October 5, 2004
    Assignee: LG Chem, Ltd.
    Inventors: Suk-Ky Chang, In-Seok Hwang, In-Cheon Han, Hye-Won Sohn, Sang-Eon Han, Belyaev Sergey, Seung-Man Sohn, Malimonenko Nikolay
  • Acrylic adhesive compositions for polarizing film and the polarizer film using the same
    Publication number: 20030054166
    Abstract: The present invention provides an acrylic pressure sensitive adhesive composition having an element with a positive stress optical coefficient for a polarizing film and a polarizing film using the same.
    Type: Application
    Filed: August 15, 2002
    Publication date: March 20, 2003
    Inventors: Suk-Ky Chang, In-Seok Hwang, In-Cheon Han, Hye-Won Sohn, Sang-Eon Han, Belyaev Sergey, Seung-Man Sohn, Malimonenko Nikolay