Patents by Inventor Mark C. Hersam

Mark C. Hersam 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: 20200354219
    Abstract: A composition includes a few-layer phosphorene nanomaterial comprising at least one of mono-, bi-, and n-layer phosphorene nanosheets, where n is an integer selected from 3 to 6; deoxygenated water; and at least one amphiphilic surface active component.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 12, 2020
    Inventors: Mark C. Hersam, Joohoon Kang, Joshua D. Wood
  • Patent number: 10829381
    Abstract: A method of preparing an atomically-dimensioned elemental boron allotrope includes providing a substrate at a temperature greater than about 200° C.; generating elemental boron vapor from a solid elemental boron source; and contacting said substrate with said boron vapor for at least one of a rate and at a pressure sufficient to deposit on said substrate a boron allotrope comprising an elemental boron layer comprising a boron atomic thickness dimension, said method under negative pressure.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 10, 2020
    Assignees: NORTHWESTERN UNIVERSITY, UCHICAGO ARGONNE, LLC
    Inventors: Mark C. Hersam, Joshua D. Wood, Andrew J. Mannix, Brian T. Kiraly, Brandon L. Fisher, Nathan P. Guisinger
  • Patent number: 10800939
    Abstract: A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 13, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mark C. Hersam, Yu Teng Liang, Ethan B. Secor, Pradyumna L. Prabhumirashi, Kanan P. Puntambekar, Michael L. Geier
  • Publication number: 20200290883
    Abstract: A method of preparing an atomically-dimensioned elemental boron allotrope includes providing a substrate at a temperature greater than about 200° C.; generating elemental boron vapor from a solid elemental boron source; and contacting said substrate with said boron vapor for at least one of a rate and at a pressure sufficient to deposit on said substrate a boron allotrope comprising an elemental boron layer comprising a boron atomic thickness dimension, said method under negative pressure.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Inventors: Mark C. Hersam, Joshua D. Wood, Andrew J. Mannix, Brian T. Kiraly, Brandon L. Fisher, Nathan P. Guisinger
  • Publication number: 20200270134
    Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (.C) density.
    Type: Application
    Filed: November 15, 2017
    Publication date: August 27, 2020
    Inventors: Andre E. Nel, Tian Xia, Ruibin Li, Mark C. Hersam, Nikhita D. Mansukhani, Linda Guiney
  • Patent number: 10749170
    Abstract: Disclosed herein are graphene-coated lithium manganese oxide spinels cathodes for high-performance batteries Li-ion batteries and methods for making thereof. A single-layer graphene coating is shown to significantly reduce manganese loss in the cathodes while concurrently promoting the formation of a well-defined solid electrolyte interphase layer.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: August 18, 2020
    Assignees: NORTHWESTERN UNIVERSITY, UCHICAGO ARGONNE, LLC
    Inventors: Mark C. Hersam, Laila Jaber Ansari, Kanan P. Puntambekar, Michael M. Thackeray
  • Patent number: 10720560
    Abstract: A transverse thermoelectric includes a first array of hole-conducting nanowires and a second array of electron-conducting nanowires positioned orthogonal to the first array of nanowires. A substrate provides structure to the first array of nanowires and the second array of nanowires.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: July 21, 2020
    Assignee: Northwestern University
    Inventors: Matthew Grayson, Mark C Hersam, Chuanle Zhou, Yang Tang, Tejas Shastry
  • Patent number: 10717647
    Abstract: A sensing platform includes a substrate, an array of wells formed in the substrate, and sorted nanoparticles filling in the array of wells such that each well contains a single sorted nanoparticle, wherein the sorted nanoparticles are in a cluster state.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: July 21, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Timothy P. Tyler, Anne-Isabelle Henry, Richard P. Van Duyne, Mark C. Hersam
  • Publication number: 20200229304
    Abstract: Articles, electronic devices and related methods of fabrication interfacing graphene with a gallium liquid metal alloy.
    Type: Application
    Filed: October 3, 2018
    Publication date: July 16, 2020
    Inventors: Mark C. HERSAM, Ethan B. SECOR, Alexander B. COOK, Christopher TABOR
  • Patent number: 10703637
    Abstract: A boron allotrope comprising an elemental boron layer comprising a boron atomic thickness dimension and a method for preparation thereof.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: July 7, 2020
    Assignees: NORTHWESTERN UNIVERSITY, UCHICAGO ARGONNE, LLC
    Inventors: Mark C. Hersam, Joshua D. Wood, Andrew J. Mannix, Brian T. Kiraly, Brandon L. Fisher, Nathan P. Guisinger
  • Patent number: 10702803
    Abstract: Separation of rhenium disulfide nanomaterials and related fluid density gradient media.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: July 7, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mark C. Hersam, Joohoon Kang
  • Patent number: 10689252
    Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: June 23, 2020
    Assignee: Northwestern University
    Inventors: Michael S. Arnold, Mark C. Hersam, Samuel I. Stupp
  • Patent number: 10676629
    Abstract: A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: June 9, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mark C. Hersam, Yu Teng Liang, Ethan B. Secor, Pradyumna L. Prabhumirashi, Kanan P. Puntambekar, Michael L. Geier
  • Publication number: 20200148546
    Abstract: A method of preparing a boron allotrope-organic lateral heterostructural article includes providing an article comprising a substrate comprising a portion thereof coupled to a boron allotrope comprising an elemental boron layer; generating an organic compound vapor from a solid organic compound source, said organic compound vapor having a higher enthalpy of adsorption on said substrate compared to enthalpy of adsorption on said boron allotrope; and contacting said organic compound vapor with said article to selectively deposit said organic compound on a substrate portion not coupled to said boron allotrope to provide a heterostructural article comprising said organic compound and said boron allotrope laterally adjacent one to the other and providing a lateral interface one with the other.
    Type: Application
    Filed: December 16, 2019
    Publication date: May 14, 2020
    Inventors: Mark C. Hersam, Xiaolong Liu
  • Patent number: 10590294
    Abstract: A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: March 17, 2020
    Assignees: NORTHWESTERN UNIVERSITY, PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Mark C. Hersam, Yu Teng Liang, Ethan B. Secor, Pradyumna L. Prabhumirashi, Kanan P. Puntambekar, Michael L. Geier, Bok Y. Ahn, Jennifer A. Lewis
  • Patent number: 10594319
    Abstract: A logic gate and a cascaded logic family is described that uses the unique ambipolar behavior, e.g., of carbon nanotubes. A complementary VT-drop ambipolar carbon nanotube logic can provide a decrease in device count compared to previous ambipolar carbon nanotube field effect transistor logic structures, enabling power and/or speed improvements.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: March 17, 2020
    Assignee: Northwestern University
    Inventors: Joseph S. Friedman, Michael L. Geier, Mark C. Hersam, Alan V. Sahakian
  • Publication number: 20200083440
    Abstract: Thermally activated memristors from solution-processed two-dimensional (2D) semiconductors, fabricating methods and applications of the same. The memristor includes a semiconductor film formed on a nanoporous membrane, and at least two electrodes spatial-apart formed on the semiconductor film and electrically coupled with the semiconductor film to define a channel in the semiconductor film between the at least two electrodes, where the channel has one or more filaments, one or more dendrite, or a combination of them formed in the semiconductor film. The underlying switching mechanism applies generally to a range of 2D semiconductors including, but not limited to, MoS2, MoSe2, WS2, ReS2, InSe, or related 2D semiconductor materials.
    Type: Application
    Filed: July 11, 2019
    Publication date: March 12, 2020
    Inventors: Mark C. Hersam, Vinod K. Sangwan
  • Patent number: 10569197
    Abstract: A method of separating carbon nanotubes by electronic type includes centrifuging a carbon nanotube composition in contact with a first fluid medium comprising a first density gradient; and separating the carbon nanotube composition into two or more separation fractions. The carbon nanotube composition comprises two or more non-ionic amphiphilic surface active components and a carbon nanotube population comprising double-walled carbon nanotubes having a semiconducting outer wall (s-DWCNTs), and double-walled carbon nanotubes having a metallic outer wall (m-DWCNTs). The two or more separation fractions comprise a first separation fraction comprising a carbon nanotube subpopulation comprising a higher percentage of s-DWCNTs than the carbon nanotube population, and a second separation fraction comprising a carbon nanotube subpopulation comprising a higher percentage of m-DWCNTs than the carbon nanotube population.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: February 25, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Alexander A. Green, Mark C. Hersam
  • Patent number: 10550003
    Abstract: Articles comprising a boron allotrope and an organic compound having a lateral interface one with the other, together with method(s) of preparation of such articles.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: February 4, 2020
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mark C. Hersam, Xiaolong Liu
  • Patent number: 10494536
    Abstract: A rapid, scalable methodology for graphene dispersion with a polymer-organic solvent solution and subsequent solvent exchange, as can be utilized without centrifugation, to enhance graphene concentration.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: December 3, 2019
    Assignee: Northwestern University
    Inventors: Mark C. Hersam, Yu Teng Liang