Patents by Inventor Gang Logan Liu

Gang Logan Liu 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).

  • Patent number: 11060973
    Abstract: Provided are plasmon resonance imaging devices having metal-insulator-metal nanocups and methods of use thereof.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: July 13, 2021
    Assignee: BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Gang Logan Liu, Lynford L. Goddard, Abid Ameen, Lisa Anne Plucinski Hackett, Faiza Khawar Dar
  • Patent number: 10734237
    Abstract: Methods and apparatus for subtractively fabricating three-dimensional structures relative to a surface of a substrate and for additively depositing metal and dopant atoms onto the surface and for diffusing them into the bulk. A chemical solution is applied to the surface of the semiconductor substrate, and a spatial pattern of electron-hole pairs is generated by projecting a spatial pattern of illumination characterized by a specified intensity, wavelength and duration at each pixel of a plurality of pixels on the surface. Charge carriers are driven away from the surface of the semiconductor on a timescale short compared to the carrier recombination lifetime. Such methods are applied to creating a spatially varying doping profile in the semiconductor substrate, a photonic integrated circuit and an integrated photonic microfluidic circuit.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: August 4, 2020
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Lynford Goddard, Kaiyuan Wang, Chris Edwards, Lonna Edwards, Xin Yu, Gang Logan Liu, Samuel Washington, Shailendra Srivastava, Terry Koker, Julianne Lee, Catherine Britt Carlson
  • Publication number: 20190369019
    Abstract: Provided are plasmon resonance imaging devices having metal-insulator-metal nanocups and methods of use thereof.
    Type: Application
    Filed: May 10, 2019
    Publication date: December 5, 2019
    Inventors: Gang Logan Liu, Lynford L. Goddard, Abid Ameen, Lisa Anne Plucinski Hackett, Faiza Khawar Dar
  • Patent number: 10361329
    Abstract: A photovoltaic desalination system can comprise a solar cell, configured to receive solar radiation, including an n-doped semiconductor layer, a p-doped semiconductor layer, the two semiconductor layers forming a p-n junction, and an channel array, formed in the p-n junction; an input reservoir, coupled to the solar cell, the input reservoir configured to contain a salty fluid, and to release the salty fluid to the solar cell; an output fluid management system, coupled to the solar cell, the output fluid management system configured to receive an output fluid from the solar cell; wherein the channel array is configured to receive the salty fluid from the input reservoir, and to output the output fluid to the output fluid management system.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 23, 2019
    Assignee: The Regents of the University of California
    Inventors: Yemaya C. Bordain, Manas Ranjan Gartia, Gang Logan Liu, Lisa Plucinski, Luman Qu, Harry B. Radousky, Brent Trenhaile, Gergely T. Zimanyi
  • Patent number: 10115599
    Abstract: Methods and apparatus for subtractively fabricating three-dimensional structures relative to a surface of a substrate and for additively depositing metal and dopant atoms onto the surface and for diffusing them into the bulk. A chemical solution is applied to the surface of the semiconductor substrate, and a spatial pattern of electron-hole pairs is generated by projecting a spatial pattern of illumination characterized by a specified intensity, wavelength and duration at each pixel of a plurality of pixels on the surface. An electrical potential is applied across the interface of the semiconductor and the solution with a specified temporal profile relative to the temporal profile of the spatial pattern of illumination. Such methods are applied to the fabrication of a photodetector integral with a parabolic reflector, cell size sorting chips, a three-dimensional photonic bandgap chip, a photonic integrated circuit, and an integrated photonic microfluidic circuit.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: October 30, 2018
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Lynford Goddard, Kaiyuan Wang, Chris Edwards, Lonna Edwards, Xin Yu, Gang Logan Liu, Terry Koker
  • Publication number: 20180301344
    Abstract: Methods and apparatus for subtractively fabricating three-dimensional structures relative to a surface of a substrate and for additively depositing metal and dopant atoms onto the surface and for diffusing them into the bulk. A chemical solution is applied to the surface of the semiconductor substrate, and a spatial pattern of electron-hole pairs is generated by projecting a spatial pattern of illumination characterized by a specified intensity, wavelength and duration at each pixel of a plurality of pixels on the surface. Charge carriers are driven away from the surface of the semiconductor on a timescale short compared to the carrier recombination lifetime. Such methods are applied to creating a spatially varying doping profile in the semiconductor substrate, a photonic integrated circuit and an integrated photonic microfluidic circuit.
    Type: Application
    Filed: May 22, 2018
    Publication date: October 18, 2018
    Inventors: Lynford Goddard, Kaiyuan Wang, Chris Edwards, Lonna Edwards, Xin Yu, Gang Logan Liu, Samuel Washington, Shailendra Srivastava, Terry Koker, Julianne Lee, Catherine Britt Carlson
  • Patent number: 9893486
    Abstract: An injection-seeded whispering gallery mode optical amplifier. The amplifier includes a micro or nanoscale whispering gallery mode resonator configured to amplify a whispering gallery mode therein via a gain medium separated from the whispering gallery mode resonator but within the evanescent field of the whispering gallery mode resonator. A pump stimulates the whispering gallery mode. A plasmonic surface couples power into the whispering gallery mode resonator.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: February 13, 2018
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Manas Ranjan Gartia, Gang Logan Liu
  • Patent number: 9829464
    Abstract: A liquid sampling device for use with a mobile device comprises a wired connection for connecting the liquid sampling device to the mobile device, a sample receiving and testing section capable of receiving a liquid sample and conducting electrochemical testing of the liquid sample and a sample testing circuit configured to communicate at least one liquid sample test result to the mobile device via the wired connection. Associated methods and a mobile device application for interfacing with the liquid sampling device are also disclosed.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 28, 2017
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Gang Logan Liu, Manas Ranjan Gartia, Te-Wei Chang, Xinhao Wang, Jing Jang
  • Publication number: 20170025813
    Abstract: An injection-seeded whispering gallery mode optical amplifier. The amplifier includes a micro or nanoscale whispering gallery mode resonator configured to amplify a whispering gallery mode therein via a gain medium separated from the whispering gallery mode resonator but within the evanescent field of the whispering gallery mode resonator. A pump stimulates the whispering gallery mode. A plasmonic surface couples power into the whispering gallery mode resonator.
    Type: Application
    Filed: December 18, 2014
    Publication date: January 26, 2017
    Inventors: J. Gary Eden, Manas Ranjan Gartia, Gang Logan Liu
  • Publication number: 20160310899
    Abstract: A photovoltaic desalination system can comprise a solar cell, configured to receive solar radiation, including an n-doped semiconductor layer, a p-doped semiconductor layer, the two semiconductor layers forming a p-n junction, and an channel array, formed in the p-n junction; an input reservoir, coupled to the solar cell, the input reservoir configured to contain a salty fluid, and to release the salty fluid to the solar cell; an output fluid management system, coupled to the solar cell, the output fluid management system configured to receive an output fluid from the solar cell; wherein the channel array is configured to receive the salty fluid from the input reservoir, and to output the output fluid to the output fluid management system.
    Type: Application
    Filed: April 22, 2016
    Publication date: October 27, 2016
    Applicant: The Regents of the University of California
    Inventors: Yemaya C. Bordain, Manas Ranjan Gartia, Gang Logan Liu, Lisa Plucinski, Luman Qu, Harry B. Radousky, Brent Trenhaile, Gergely T. Zimanyi
  • Patent number: 9464985
    Abstract: Apparatus and methods are disclosed that are configured to permit nanoplasmonic spectroscopy sensing in the form of colorimetric sensing. An example apparatus involves: (a) an array layer having a top surface and a bottom surface, wherein a plurality of nanoholes are defined in the top surface of the array layer, wherein the plurality of nanoholes each have at least one sidewall surface and a bottom surface, (b) a thin metal film disposed on the top surface of the array layer and on the bottom surface of each of the plurality of nanoholes, and (c) a plurality of nanoparticles disposed on the at least one sidewall surface of the plurality of nanoholes.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: October 11, 2016
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Gang Logan Liu, Manas Ranjan Gartia, Austin Yin Kyai Hsiao
  • Publication number: 20160118265
    Abstract: Methods and apparatus for subtractively fabricating three-dimensional structures relative to a surface of a substrate and for additively depositing metal and dopant atoms onto the surface and for diffusing them into the bulk. A chemical solution is applied to the surface of the semiconductor substrate, and a spatial pattern of electron-hole pairs is generated by projecting a spatial pattern of illumination characterized by a specified intensity, wavelength and duration at each pixel of a plurality of pixels on the surface. An electrical potential is applied across the interface of the semiconductor and the solution with a specified temporal profile relative to the temporal profile of the spatial pattern of illumination. Such methods are applied to the fabrication of a photodetector integral with a parabolic reflector, cell size sorting chips, a three-dimensional photonic bandgap chip, a photonic integrated circuit, and an integrated photonic microfluidic circuit.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Inventors: Lynford Goddard, Kaiyuan Wang, Chris Edwards, Lonna Edwards, Xin Yu, Gang Logan Liu, Samuel Washington, Shailendra Srivastava, Terry Koker, Julianne Lee, Catherine Britt Carlson
  • Patent number: 9176065
    Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: November 3, 2015
    Assignees: Lawrence Livermore National Security, LLC, The Board of Trustees of the University of Illinois
    Inventors: Tiziana C. Bond, Robin Miles, James C. Davidson, Gang Logan Liu
  • Patent number: 9080981
    Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: July 14, 2015
    Assignees: Lawrence Livermore National Security, LLC, The Board of Trustees of the University of Illinois
    Inventors: Tiziana C. Bond, Robin Miles, James C. Davidson, Gang Logan Liu
  • Publication number: 20150127271
    Abstract: A liquid sampling device for use with a mobile device comprises a wired connection for connecting the liquid sampling device to the mobile device, a sample receiving and testing section capable of receiving a liquid sample and conducting electrochemical testing of the liquid sample and a sample testing circuit configured to communicate at least one liquid sample test result to the mobile device via the wired connection. Associated methods and a mobile device application for interfacing with the liquid sampling device are also disclosed.
    Type: Application
    Filed: March 13, 2013
    Publication date: May 7, 2015
    Inventors: Gang Logan Liu, Manas Ranjan Gartia, Te-Wei Chang, Xinhao Wang, Jing Jang
  • Patent number: 8956577
    Abstract: A microfluidic device comprising a biodegradable material comprises, according to one embodiment, a body including one or more channels extending therethrough for passage of a fluid, where the body includes a first preform and a second preform bonded to the first preform. The first preform comprises a biodegradable material derived from a plant and the second preform defines a wall of each of the channels. According to another embodiment, the microfluidic device comprises a body having one or more channels extending therethrough for passage of a fluid, where the body comprises a biodegradable material and is a monolithic body including no seams.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 17, 2015
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Jozef L. Kokini, Gang Logan Liu, Austin Hsiao, Jarupat Luecha
  • Publication number: 20140333926
    Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
    Type: Application
    Filed: June 26, 2014
    Publication date: November 13, 2014
    Inventors: Tiziana C. BOND, Robin MILES, James C. DAVIDSON, Gang Logan LIU
  • Publication number: 20140335269
    Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
    Type: Application
    Filed: June 11, 2014
    Publication date: November 13, 2014
    Inventors: Tiziana C. BOND, Robin MILES, James C. DAVIDSON, Gang Logan LIU
  • Publication number: 20140206101
    Abstract: Apparatus and methods are disclosed that are configured to permit nanoplasmonic spectroscopy sensing in the form of colorimetric sensing. An example apparatus involves: (a) an array layer having a top surface and a bottom surface, wherein a plurality of nanoholes are defined in the top surface of the array layer, wherein the plurality of nanoholes each have at least one sidewall surface and a bottom surface, (b) a thin metal film disposed on the top surface of the array layer and on the bottom surface of each of the plurality of nanoholes, and (c) a plurality of nanoparticles disposed on the at least one sidewall surface of the plurality of nanoholes.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Inventors: Gang Logan Liu, Manas Ranjan Gartia, Austin Yin Kyai Hsiao
  • Patent number: 8786852
    Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: July 22, 2014
    Assignees: Lawrence Livermore National Security, LLC, The Board of Trustees of the University of Illinois
    Inventors: Tiziana C. Bond, Robin Miles, James C. Davidson, Gang Logan Liu