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).
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Patent number: 11803120Abstract: 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: GrantFiled: December 8, 2020Date of Patent: October 31, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee
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Publication number: 20230324788Abstract: 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: ApplicationFiled: May 26, 2023Publication date: October 12, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee
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Publication number: 20220348859Abstract: 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: ApplicationFiled: April 6, 2022Publication date: November 3, 2022Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Dhanya Haridas, Jillian N. Lanese, Woo-Kyung Lee
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Publication number: 20210208501Abstract: 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: ApplicationFiled: December 8, 2020Publication date: July 8, 2021Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee
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Patent number: 10762925Abstract: 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: GrantFiled: October 10, 2018Date of Patent: September 1, 2020Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
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Publication number: 20190088279Abstract: 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: ApplicationFiled: October 10, 2018Publication date: March 21, 2019Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
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Patent number: 10236365Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.Type: GrantFiled: January 30, 2018Date of Patent: March 19, 2019Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
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Patent number: 10134434Abstract: 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: GrantFiled: October 20, 2015Date of Patent: November 20, 2018Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan
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Patent number: 10128357Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.Type: GrantFiled: February 7, 2017Date of Patent: November 13, 2018Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Adam L. Friedman, Olaf M. J. van't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
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Publication number: 20180182852Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.Type: ApplicationFiled: January 30, 2018Publication date: June 28, 2018Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
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Publication number: 20180130897Abstract: A homoepitaxial, ultrathin tunnel barrier-based electronic device in which the tunnel barrier and transport channel are made of the same material—graphene.Type: ApplicationFiled: February 7, 2017Publication date: May 10, 2018Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Adam L. Friedman, Olaf M. J. van 't Erve, Jeremy T. Robinson, Berend T. Jonker, Keith E. Whitener
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Patent number: 9895870Abstract: 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: GrantFiled: February 22, 2017Date of Patent: February 20, 2018Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee, Jeremy T. Robinson, Nabil D. Bassim, Rhonda Michele Stroud, Paul E. Sheehan
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Publication number: 20170259554Abstract: 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: ApplicationFiled: February 22, 2017Publication date: September 14, 2017Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Keith E. Whitener, Woo K. Lee, Jeremy T. Robinson, Nabil D. Bassim, Rhonda Michele Stroud, Paul E. Sheehan
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Publication number: 20160140992Abstract: 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: ApplicationFiled: October 20, 2015Publication date: May 19, 2016Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Woo K. Lee, Keith E. Whitener, Paul E. Sheehan