Patents by Inventor Dimitrios Maroudas

Dimitrios Maroudas 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).

  • Multilayer graphene structures with enhanced mechanical properties resulting from deterministic control of interlayer twist angles and chemical functionalization
    Patent number: 10821709
    Abstract: An article of manufacture includes a first graphene layer, a second graphene layer over the first graphene layer, the second graphene layer oriented at a first interlayer twist angle with respect to the first graphene layer and bonded by interlayer covalent bonds to the first graphene layer, and a third graphene layer over the second graphene layer, the third graphene layer oriented at a second interlayer twist angle with respect to the second graphene layer and bonded by interlayer covalent bonds to the second graphene layer. A multi-layer graphene article includes at least three graphene layers, each graphene layer being oriented at an interlayer twist angle with respect to an adjacent graphene layer and bonded by interlayer covalent bonds to the adjacent graphene layer.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: November 3, 2020
    Assignees: University of Massachusetts, Universidade Federal Do Rio Grande Do Sul-UFRGS, The Government of the United States of America, As Represented by the Secretary of the Navy
    Inventors: Christos Dimitrakopoulos, Dimitrios Maroudas, Andre R. Muniz, David Kurt Gaskill
  • MULTILAYER GRAPHENE STRUCTURES WITH ENHANCED MECHANICAL PROPERTIES RESULTING FROM DETERMINISTIC CONTROL OF INTERLAYER TWIST ANGLES AND CHEMICAL FUNCTIONALIZATION
    Publication number: 20200189240
    Abstract: An article of manufacture includes a first graphene layer, a second graphene layer over the first graphene layer, the second graphene layer oriented at a first interlayer twist angle with respect to the first graphene layer and bonded by interlayer covalent bonds to the first graphene layer, and a third graphene layer over the second graphene layer, the third graphene layer oriented at a second interlayer twist angle with respect to the second graphene layer and bonded by interlayer covalent bonds to the second graphene layer. A multi-layer graphene article includes at least three graphene layers, each graphene layer being oriented at an interlayer twist angle with respect to an adjacent graphene layer and bonded by interlayer covalent bonds to the adjacent graphene layer.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 18, 2020
    Inventors: Christos Dimitrakopoulos, Dimitrios Maroudas, Andre R. Muniz, David Kurt Gaskill
  • Multilayer graphene structures with enhanced mechanical properties resulting from deterministic control of interlayer twist angles and chemical functionalization
    Patent number: 10562278
    Abstract: An article of manufacture includes a first graphene layer, a second graphene layer over the first graphene layer, the second graphene layer oriented at a first interlayer twist angle with respect to the first graphene layer and bonded by interlayer covalent bonds to the first graphene layer, and a third graphene layer over the second graphene layer, the third graphene layer oriented at a second interlayer twist angle with respect to the second graphene layer and bonded by interlayer covalent bonds to the second graphene layer. A multi-layer graphene article includes at least three graphene layers, each graphene layer being oriented at an interlayer twist angle with respect to an adjacent graphene layer and bonded by interlayer covalent bonds to the adjacent graphene layer.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: February 18, 2020
    Assignees: University of Massachusetts, Universidade Federal do Rio Grande do SuI-UFRGS, The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Christos Dimitrakopoulos, Dimitrios Maroudas, Andre R. Muniz, D. Kurt Gaskill
  • Formation of Interlayer Covalent Bonds in Bilayer, Trilayer and Multilayer Graphene
    Publication number: 20190055129
    Abstract: An embodiment according to the invention provides methods for making interlayer covalent bonds in bilayer, trilayer, and multilayer graphene. Raman spectroscopy is used to characterize the resulting material, and the Raman peak at approximately 1330 cm?1 coincides with the characteristic peak of diamond and polycrystalline nanodiamond peaks published in the art. This indicates that the process induces the formation of sp3 carbon-carbon (C—C) bonds (similar to the ones in diamond) between the graphene layers. The graphene bilayer or multilayer converts to sp3 bonded carbon only partially, as the Raman spectrum also indicates a strong component of graphene still remaining in the bilayer or multilayer.
    Type: Application
    Filed: July 20, 2018
    Publication date: February 21, 2019
    Inventors: Christos Dimitrakopoulos, Dimitrios Maroudas, Yuxi Wang
  • Multilayer Graphene Structures With Enhanced Mechanical Properties Resulting From Deterministic Control Of Interlayer Twist Angles And Chemical Functionalization
    Publication number: 20160207291
    Abstract: An article of manufacture includes a first graphene layer, a second graphene layer over the first graphene layer, the second graphene layer oriented at a first interlayer twist angle with respect to the first graphene layer and bonded by interlayer covalent bonds to the first graphene layer, and a third graphene layer over the second graphene layer, the third graphene layer oriented at a second interlayer twist angle with respect to the second graphene layer and bonded by interlayer covalent bonds to the second graphene layer. A multi-layer graphene article includes at least three graphene layers, each graphene layer being oriented at an interlayer twist angle with respect to an adjacent graphene layer and bonded by interlayer covalent bonds to the adjacent graphene layer.
    Type: Application
    Filed: May 18, 2015
    Publication date: July 21, 2016
    Inventors: Christos Dimitrakopoulos, Dimitrios Maroudas, Andre R. Muniz, D. Kurt Gaskill