Patents by Inventor Keith E. Whitener

Keith E. Whitener 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: 11803120
    Abstract: A method of graphene-enabled block copolymer lithography transfer to an arbitrary substrate comprising the steps of applying graphene on a surface, adding block copolymers to the graphene on the surface, phase-separating the block copolymers, forming nanopatterned phase separated block copolymers, delaminating the graphene, and transferring the graphene and nanopatterned phase separated block copolymers to a second surface. A layer of nanopatterned phase separated block copolymers on an arbitrary surface comprising a first arbitrary substrate absent of chemical preparation, a layer of graphene on the first arbitrary substrate, and a layer of phase-separated block copolymers on the layer of graphene, wherein the layer of phase-separated block copolymers on the layer of graphene was formed on a second substrate and delaminated via water liftoff and wherein the nanopatterned phase separated block copolymers are utilized as a shadow mask for lithography on the first arbitrary substrate.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: October 31, 2023
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Woo K. Lee
  • Publication number: 20230324788
    Abstract: A layer of nanopatterned phase separated block copolymers on an arbitrary surface comprising a first arbitrary substrate absent of chemical preparation, a layer of graphene on the first arbitrary substrate, and a layer of phase-separated block copolymers on the layer of graphene, wherein the layer of phase-separated block copolymers on the layer of graphene was formed on a second substrate and delaminated via water liftoff and wherein the nanopatterned phase separated block copolymers are utilized as a shadow mask for lithography on the first arbitrary substrate.
    Type: Application
    Filed: May 26, 2023
    Publication date: October 12, 2023
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Woo K. Lee
  • Publication number: 20220348859
    Abstract: A method of lithographic masking for spatially localized biochemical stimulus delivery, comprising the steps of providing a group of cells on a substrate, coating a layer of gelatin on a portion of the cells, creating a mask layer on a portion of the layer of gelatin on a portion of the cells, and creating an area of masked cells and an area of unmasked cells. Further, the method can include delivering a biochemical signal to the area of unmasked cells, removing the mask layer, and allowing the cells with the biochemical signal and the cells without the biochemical signal to interact freely.
    Type: Application
    Filed: April 6, 2022
    Publication date: November 3, 2022
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Dhanya Haridas, Jillian N. Lanese, Woo-Kyung Lee
  • Publication number: 20210208501
    Abstract: A method of graphene-enabled block copolymer lithography transfer to an arbitrary substrate comprising the steps of applying graphene on a surface, adding block copolymers to the graphene on the surface, phase-separating the block copolymers, forming nanopatterned phase separated block copolymers, delaminating the graphene, and transferring the graphene and nanopatterned phase separated block copolymers to a second surface. A layer of nanopatterned phase separated block copolymers on an arbitrary surface comprising a first arbitrary substrate absent of chemical preparation, a layer of graphene on the first arbitrary substrate, and a layer of phase-separated block copolymers on the layer of graphene, wherein the layer of phase-separated block copolymers on the layer of graphene was formed on a second substrate and delaminated via water liftoff and wherein the nanopatterned phase separated block copolymers are utilized as a shadow mask for lithography on the first arbitrary substrate.
    Type: Application
    Filed: December 8, 2020
    Publication date: July 8, 2021
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Woo K. Lee
  • Patent number: 10762925
    Abstract: A patterned magnetic graphene made from the steps of transferring or growing a graphene film on a substrate, functionalizing the graphene film, hydrogenating the graphene film and forming fully hydrogenated graphene, manipulating the extent of the hydrogen content by using an electron beam from a scanning electron microscope to selectively remove hydrogen, wherein the step of selectively removing hydrogen occurs under a vacuum, and forming areas of magnetic graphene and non-magnetic graphene. A ferromagnetic graphene film comprising film that has a thickness of less than two atom layers thick.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: September 1, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
  • Publication number: 20190088279
    Abstract: A patterned magnetic graphene made from the steps of transferring or growing a graphene film on a substrate, functionalizing the graphene film, hydrogenating the graphene film and forming fully hydrogenated graphene, manipulating the extent of the hydrogen content by using an electron beam from a scanning electron microscope to selectively remove hydrogen, wherein the step of selectively removing hydrogen occurs under a vacuum, and forming areas of magnetic graphene and non-magnetic graphene. A ferromagnetic graphene film comprising film that has a thickness of less than two atom layers thick.
    Type: Application
    Filed: October 10, 2018
    Publication date: March 21, 2019
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
  • Patent number: 10236365
    Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: March 19, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
  • Patent number: 10134434
    Abstract: A method of making magnetic graphene comprising transferring or growing a graphene film on a substrate, functionalizing the graphene film, hydrogenating the graphene film and forming fully hydrogenated graphene, manipulating the extent of the hydrogen content, and forming areas of magnetic graphene and non-magnetic graphene. A ferromagnetic graphene film comprising film that has a thickness of less than two atom layers thick.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 20, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
  • Patent number: 10128357
    Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: November 13, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Adam L. Friedman, Olaf M. J. van't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
  • Publication number: 20180182852
    Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.
    Type: Application
    Filed: January 30, 2018
    Publication date: June 28, 2018
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
  • Publication number: 20180130897
    Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.
    Type: Application
    Filed: February 7, 2017
    Publication date: May 10, 2018
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
  • Patent number: 9895870
    Abstract: A method of transferring functionalized graphene comprising the steps of providing graphene on a first substrate, functionalizing the graphene and forming functionalized graphene on the first substrate, delaminating the functionalized graphene from the first substrate, and applying the functionalized graphene to a second substrate.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: February 20, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Woo K. Lee, Jeremy T. Robinson, Nabil D. Bassim, Rhonda Michele Stroud, Paul E. Sheehan
  • Publication number: 20170259554
    Abstract: A method of transferring functionalized graphene comprising the steps of providing graphene on a first substrate, functionalizing the graphene and forming functionalized graphene on the first substrate, delaminating the functionalized graphene from the first substrate, and applying the functionalized graphene to a second substrate.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 14, 2017
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Keith E. Whitener, Woo K. Lee, Jeremy T. Robinson, Nabil D. Bassim, Rhonda Michele Stroud, Paul E. Sheehan
  • Publication number: 20160140992
    Abstract: A method of making magnetic graphene comprising transferring or growing a graphene film on a substrate, functionalizing the graphene film, hydrogenating the graphene film and forming fully hydrogenated graphene, manipulating the extent of the hydrogen content, and forming areas of magnetic graphene and non-magnetic graphene. A ferromagnetic graphene film comprising film that has a thickness of less than two atom layers thick.
    Type: Application
    Filed: October 20, 2015
    Publication date: May 19, 2016
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan