Abstract: There is provided an electrically conductive paste which can prevent the increase of the volume resistivity of an electrically conductive film formed from the electrically conductive paste even if the electrically conductive film is heated to a soldering temperature of about 380° C. when the electrically conductive paste is a resin type electrically conductive paste using a silver powder and a silver-coated copper powder. In an electrically conductive paste containing a resin, a silver powder and a silver-coated copper powder having a copper powder, the surface of which is coated with a silver layer, the resin is an epoxy resin having a naphthalene skeleton, and there is added a dicarboxylic acid, preferably a dicarboxylic acid having a rational formula of HOOC—(CH2)n—COOH (n=1-8), and more preferably a dicarboxylic acid having a rational formula of HOOC—(CH2)n—COOH (n=4-7).
Abstract: Disclosed is a graphene electrochemical transfer method assisted by multiple supporting films, comprising: (1) growing graphene on a substrate, and then spin-coating a thin layer of photoresist on a surface of the graphene as a first film; (2) spin-coating n layers of thick, tough, and selectively dissolvable polymer films on the surface of the first film as an top film; (3) dissociating the multi-layer composite film and the graphene from the surface of the substrate by an electrochemical process, and dissolving the thick polymer films which is the top film with a first solvent; (4) after cleaning, transferring the thin first film and the graphene to a target substrate, and finally dissolving the thin first film away with a second solvent to complete the transfer process. This transfer process is fast, stable, and capable of transferring a large-size graphene, which may promote the large-scale application of graphene.
Abstract: Chemical vapor deposition processes and coated articles are disclosed. The process includes a first introducing of a first amount of silane to the enclosed chamber, the first amount of the silane remaining within the enclosed chamber for a first period of time, a first decomposing of the first amount of the silane during at least a portion of the first period of time, a second introducing of a second amount of the silane to the enclosed chamber, the second amount of the silane remaining within the enclosed chamber for a second period of time, and a second decomposing of the second amount of the silane during at least a portion of the second period of time. The process is devoid of inert gas purging between the first decomposing and the second introducing and/or produces a chemical vapor deposition coating devoid of hydrogen bubbles.
Type:
Grant
Filed:
April 9, 2019
Date of Patent:
March 1, 2022
Assignee:
SilcoTek Corp.
Inventors:
Thomas F. Vezza, James B. Mattzela, Gary A. Barone, Jesse Bischof, David A. Smith
Abstract: A crosslinked, nonionic, amphiphilic polymer is prepared by polymerizing a monomer mixture comprising an amphiphilic additive. The obtained polymer is useful for forming a clearer yield stress fluid in combination with a surfactant. The yield stress fluid is capable of suspending insoluble materials in the presence of electrolytes, perfumes, fragrances and/or organic acid preservatives.
Type:
Grant
Filed:
December 15, 2017
Date of Patent:
February 22, 2022
Assignee:
Lubrizol Advanced Materials, Inc.
Inventors:
Dongcui Li, Shui-Jen Raymond Hsu, Krishnan Chari
Abstract: Surfactant-containing compositions are described which include a protein component that has the effect of improving the surface-active properties of the surfactants contained in the compositions. The surfactant-containing compositions having the protein component demonstrate significantly lower critical micelle concentrations (CMC), reduced surface tensions, and reduced interfacial tensions than do comparable compositions having no protein component. In addition, the surfactant-containing compositions having the protein component has the effect of converting greasy waste contaminants to surface active materials.
Abstract: A method of forming a polyolefin-carbon nanomaterial composite which contains oriented electrically conductive pathways. The method involves milling a polyolefin with particles of a carbon nanomaterial, molding to form a composite plate, and subjecting the composite plate to an AC voltage. The AC voltage forms oriented electrically conductive pathways by partial dielectric breakdown of the composite. The presence of the oriented electrically conductive pathways gives the polyolefin-carbon nanomaterial electrical and thermal conductivity higher than the polyolefin alone.
Abstract: Provided are a nanostructure network and a method of fabricating the same. The nanostructure network includes nanostructures having a poly-crystalline structure formed by self-assembly of the nanostructures. The method includes preparing a nanostructure solution in which nanostructures are dispersed in a first solvent, forming a nanostructure ink by adding the nanostructure solution into a second solvent having a viscosity higher than that of the first solvent, coating a surface of a substrate with the nanostructure ink, and forming a nanostructure network by evaporating the first solvent and the second solvent included in the nanostructure ink coated on the substrate.
Type:
Grant
Filed:
December 28, 2018
Date of Patent:
January 4, 2022
Assignee:
INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
Inventors:
Yong-Ho Choa, Young Tae Kwon, Seung Han Ryu
Abstract: An electrically conductive and corrosion resistant graphene-based coating composition, including a binder, a graphene-filler; and a dispersing agent, wherein the graphene filler comprises a plurality of graphene stacks.
Type:
Grant
Filed:
August 9, 2019
Date of Patent:
January 4, 2022
Assignee:
THE BOEING COMPANY
Inventors:
Vijaykumar S. Ijeri, Stephen P. Gaydos, Patrick J. Kinlen, Priyanka G. Dhirde, Anand Khanna
Abstract: A method for fabricating an electrical conductor on a substrate by cold spraying includes propelling a solid powder composition that includes copper and highly oriented pyrolytic graphite using a gas propellant, and directing the solid powder composition towards the substrate at a velocity sufficient to cause the solid powder composition to undergo plastic deformation and to adhere to the substrate to deposit the electrical conductor thereon.
Abstract: A method for manufacturing graphene having a wrinkle pattern is provided. The method includes forming a wrinkle providing layer having a first thermal expansion coefficient on one surface of a graphene layer, forming a substrate having a second thermal expansion coefficient on one surface of the wrinkle providing layer, and performing a heat treatment to form wrinkles on the wrinkle providing layer by a difference between the first and second thermal expansion coefficients, thereby forming wrinkle patterns on the graphene layer.
Type:
Grant
Filed:
December 10, 2018
Date of Patent:
December 14, 2021
Assignee:
IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
Abstract: A nano graphene platelet-based conductive ink comprising: (a) nano graphene platelets (preferably un-oxidized or pristine graphene), and (b) a liquid medium in which the nano graphene platelets are dispersed, wherein the nano graphene platelets occupy a proportion of at least 0.001% by volume based on the total ink volume and a process using the same. The ink can also contain a binder or matrix material and/or a surfactant. The ink may further comprise other fillers, such as carbon nanotubes, carbon nano-fibers, metal nano particles, carbon black, conductive organic species, etc. The graphene platelets preferably have an average thickness no greater than 10 nm and more preferably no greater than 1 nm. These inks can be printed to form a range of electrically or thermally conductive components or printed electronic components.
Abstract: A metal-graphene composite product in the form of a sliding contact of an electric power application, in which graphene flakes are dispersed in a matrix of the metal, as well as to a method for obtaining such a composite product.
Type:
Grant
Filed:
April 10, 2018
Date of Patent:
November 23, 2021
Assignee:
Hitachi Energy Switzerland AG
Inventors:
Anna Andersson, Mamoun Taher, Ulf Jansson, Martin Wåhlander, Leili Tahershamsi, Helene Grennberg
Abstract: A composite material comprising NiMoO4—CoMoO4 nanosheets can be an electrode in a hybrid supercapacitor. A hybrid supercapacitor having a cathode comprising the composite material exhibits a large operating window, high energy density and high cycling stability. The heterostructure material may be formed by a one-step chemical bath deposition process.
Type:
Grant
Filed:
August 15, 2020
Date of Patent:
November 23, 2021
Assignee:
UNITED ARAB EMIRATES UNIVERSITY
Inventors:
Ihab M. Obaidat, Hee-Je Kim, Chandu V. V. Muralee Gopi, Sambasivam Sangaraju
Abstract: A positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The positive-electrode active material contains a lithium transition metal composite oxide having a spinel structure and containing nickel and manganese. The lithium transition metal composite oxide has a surface region containing niobium as a solid solution. A mole ratio of an amount of niobium to a total amount of nickel and manganese in the surface region decreases according to a distance from a surface in a depth direction in a region from the surface to a distance of 0.3 nm in the depth direction.
Abstract: Rubber composites with regions doped with conductive material, e.g., carbon nanotubes, and patterned regions doped with both conductive material and semiconductive material, e.g., carbon nanotubes and polycrystalline silicon are created with rubbing-in technology. The composites provide for a deformable and elastic composite which maintains semiconductor operations under stress, and can be used for filtering, determining compressive force, and a variety of other applications.
Type:
Grant
Filed:
March 5, 2021
Date of Patent:
November 9, 2021
Assignee:
King Abdulaziz University
Inventors:
Muhammad Tariq Saeed Chani, Abdullah Mohamed Asiri, Khasan Karimov
Abstract: Methods for forming a nanotube fabric with a controlled surface roughness (or smoothness) and a selected degree of rafting are disclosed by adjusting the concentration levels of a selected ionic species within a nanotube formulation used to form the nanotube fabric. In one aspect, the present disclosure provides a nanotube formulation roughness curve (and methods for generating such a curve) that can be used to select a utilizable range of ionic species concentration levels that will provide a nanotube fabric with a desired surface roughness (or smoothness) and degree of rafting. In some aspects of the present disclosure, such a nanotube formulation roughness curve can be used adjust nanotube formulation prior to a nanotube formulation deposition process to provide nanotube fabrics that are relatively smooth with a low degree of rafting.
Type:
Grant
Filed:
May 16, 2019
Date of Patent:
October 5, 2021
Inventors:
Joseph James McDermott, Jennifer Black, Rahul Sen, David A. Roberts, Billy Smith
Abstract: A homogenous composite material with increased tensile strength comprising 2-dimensional nano-sheets exfoliated from a 3-dimensional layered material mixed in a liquid non-Newtonian viscoelastic material to produce the homogenous composite material; and a process for making the same.
Type:
Grant
Filed:
August 3, 2017
Date of Patent:
October 5, 2021
Assignee:
The Provost, Fellows, Foundation Scholars, & the Other Members of Board, of the College of the Holy & Undiv. Trinity of Queen
Inventors:
Conor Boland, Umar Khan, Jonathan Coleman
Abstract: Described herein is a mineralized core-shell microcapsule slurry including at least one microcapsule having: a) an oil-based core including a hydrophobic active ingredient; b) a polymeric shell having a terminating charged functional surface; and c) a mineral layer on the terminating charged functional surface. Also described herein is a process for a preparation of said microcapsules. Also described herein are perfuming compositions and consumer products including said microcapsules, including perfumed consumer products in the form of home care or personal care products.
Type:
Grant
Filed:
December 21, 2017
Date of Patent:
October 5, 2021
Assignee:
Firmenich SA
Inventors:
Huda Jerri, Nicholas Impellizzeri, Valery Normand
Abstract: An electroconductive composite comprises a matrix of nanocrystalline cellulose and graphene oxide. The matrix is, in at least a region thereof, unipolar by having, in that region, either p-type charge carrier conductivity or n-type charge carrier conductivity depending on the mass concentration of nanocrystalline cellulose in that portion of the matrix.
Type:
Grant
Filed:
March 12, 2018
Date of Patent:
September 21, 2021
Inventors:
Bice Susan Martincigh, Werner E. Van Zyl, Vincent O. Nyamori, Moses Abednego Ollengo, Vashen Moodley, Edwin Tonderai Mombeshora
Abstract: A mixed conductor represented by Formula 1: A4+xM5-yM?yO12-?,??Formula 1 wherein, in Formula 1, A is a monovalent cation, M is at least one of a divalent cation, a trivalent cation, or a tetravalent cation, M? is at least one of a monovalent cation, a divalent cation, a trivalent cation, a tetravalent cation, a pentavalent cation, or a hexavalent cation, M and M? are different from each other, and 0.3?x<3, 0.01<y<2, and 0???1 are satisfied.
Type:
Grant
Filed:
October 30, 2019
Date of Patent:
September 14, 2021
Assignee:
SAMSUNG ELECTRONICS CO., LTD.
Inventors:
Hyunpyo Lee, Hyukjae Kwon, Sangbok Ma, Donghwa Seo, Dongmin Im