Fluidic Host/matrix Containing Nanomaterials Patents (Class 977/786)
  • Patent number: 9013784
    Abstract: A nanoparticle waveguide apparatus, a nanoparticle waveguide photonic system and a method of photonic transmission employ a nearfield-coupled nanoparticle (NCN) waveguide to cooperatively propagate an optical signal. The nanoparticle waveguide apparatus includes a first optical waveguide adjacent to a second optical waveguide, the first optical waveguide comprising an NCN waveguide having a plurality of nanoparticles. The nanoparticle waveguide photonic system further includes a nearfield coupling (NC) modulator. The method includes providing the NCN waveguides and modulating a coupling between one or both of first and second NCN waveguides and adjacent nanoparticles within one or both of the first and second NCN waveguides.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: April 21, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lars H. Thylen, Alexandre M. Bratkovski, Petter Holmstrom
  • Publication number: 20150086169
    Abstract: The present inventions relate to optical components which include quantum confined semiconductor nanoparticles, wherein at least a portion of the nanoparticles include a ligand attached to a surface thereof, the ligand being represented by the formula: X-Sp-Z, wherein: X represents a primary amine group, a secondary amine group, a urea, a thiourea, an imidizole group, an amide group, an other nitrogen containing group, a carboxylic acid group, a phosphonic or arsonic acid group, a phosphinic or arsinic acid group, a phosphate or arsenate group, a phosphine or arsine oxide group; Sp represents a spacer group, such as a group capable of allowing a transfer of charge or an insulating group; and Z represents: (i) a reactive group capable of communicating specific chemical properties to the nanocrystal as well as provide specific chemical reactivity to the surface of the nanocrystal, and/or (ii) a group that is cyclic, halogenated, or polar a-protic.
    Type: Application
    Filed: September 29, 2014
    Publication date: March 26, 2015
    Inventors: CRAIG BREEN, JOHN R. LINTON, JONATHAN S. STECKEL, MARSHALL COX, SETH COE-SULLIVAN, MARK COMERFORD
  • Patent number: 8906256
    Abstract: A nanometal dispersion and a method for preparing a nanometal dispersion are provided. The method comprises mixing a metal seed crystal aqueous solution, a polysaccharide aqueous solution, and a metal compound aqueous solution, followed by allowing the resulting mixture to conduct a reduction-oxidation reaction to form a nanometal. The produced nanometal dispersion comprises a polysaccharide and a nanometal. The polysaccharide is composed of N-actyl-D-glucosamine and glucuronic acid, and the nanometal has multimorphology.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 9, 2014
    Assignee: China Medical University
    Inventors: Chih-Wei Chou, Ko-Hsin Chang
  • Patent number: 8894963
    Abstract: A method for dispersing nanotubes, comprising forming a nanocomposite solution with associated nanotubes and nanoplatelets, mixing a surfactant to the nanocomposite solution, separating the nanocomposite in solution, wherein the nanotubes remain suspended in the surfactant solution, and isolating the nanotubes in solution. In certain instances, the method further comprises functionalizing the nanotubes in solution.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: November 25, 2014
    Assignees: The Texas A&M University System, Kaneka Texas Corporation
    Inventors: Hung-Jue Sue, Xi Zhang, Riichi Nishimura
  • Patent number: 8840803
    Abstract: A nanocomposite fluid includes a fluid medium; and a nanoparticle composition comprising nanoparticles which are electrically insulating and thermally conductive. A method of making the nanocomposite fluid includes forming boron nitride nanoparticles; dispersing the boron nitride nanoparticles in a solvent; combining the boron nitride nanoparticles and a fluid medium; and removing the solvent.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: September 23, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Oleg A. Mazyar, Ashley Leonard, Joshua C. Falkner
  • Patent number: 8734899
    Abstract: The present invention relates to particles which have been modified by a modifier and a dispersion medium comprising the modified particles.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: May 27, 2014
    Assignee: BASF SE
    Inventors: Imme Domke, Andrey Karpov, Hartmut Hibst, Radoslav Parashkov, Ingolf Hennig, Marcel Kastler, Friederike Fleischhaker, Lothar Weber, Peter Eckerle
  • Patent number: 8628692
    Abstract: Certain spin-coatable liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. A spin-coatable liquid for formation of a nanotube film includes a liquid medium containing a controlled concentration of purified nanotubes, wherein the controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity, and wherein the spin-coatable liquid comprises less than 1×1018 atoms/cm3 of metal impurities. The spin-coatable liquid is substantially free of particle impurities having a diameter of greater than about 500 nm.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: January 14, 2014
    Assignee: Nantero Inc.
    Inventors: Rahul Sen, Ramesh Sivarajan, Thomas Rueckes, Brent M. Segal
  • Patent number: 8623237
    Abstract: The present invention describes a composition and a method for producing mesoporous silica materials with a chiral organization. In the method, a polymerizable inorganic monomer is reacted in the presence of nanocrystalline cellulose (NCC) to give a material of inorganic solid with cellulose nanocrystallites embedded in a chiral nematic organization. The NCC can be removed to give a stable porous structure that retains the chiral organization of the NCC template. The new materials may be obtained as iridescent free-standing films with high surface area. Through control of the reaction conditions, the color of the films can be varied across the entire visible spectrum. These are the first materials to combine mesoporosity with long-range chiral ordering that leads to photonic properties.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: January 7, 2014
    Assignees: University of British Columbia, FPInnovations
    Inventors: Mark John MacLachlan, Kevin Eric Shopsowitz, Wadood Yasser Hamad, Hao Qi
  • Patent number: 8613953
    Abstract: The invention provides a novel method for obtaining solid micro- or nanoparticles with a homogeneous structure. A method is provided for obtaining solid micro- or nanoparticles with a homogeneous structure having a particle size of less than 10 ?m where the processed solid compound has the natural, crystalline, amorphous, polymorphic and other features associated with the starting compound. In accordance with the invention a method which also makes it possible to obtain solid micro- or nanoparticles with a substantially spheroidal morphology is provided.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: December 24, 2013
    Assignees: Consejo Superior de Investigaciones Científicas, Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales Y Nanomedicina
    Inventors: Nora Ventosa Rull, Jaume Veciana Miró, Mary Cano Sarabia, Santiago Sala Vergés
  • Patent number: 8581272
    Abstract: A nanopatterned surface is prepared by forming a block copolymer film on a miscut crystalline substrate, annealing the block copolymer film, then reconstructing the surface of the annealed block copolymer film. The method creates a well-ordered array of voids in the block copolymer film that is maintained over a large area. The nanopatterned block copolymer films can be used in a variety of different applications, including the fabrication of high density data storage media.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: November 12, 2013
    Assignees: The University of Massachusetts, The Regents of the University of California
    Inventors: Thomas P. Russell, Soojin Park, Ting Xu
  • Patent number: 8541591
    Abstract: Provided are a nanoparticle/dispersant complex having excellent dispersibility and long-term stability in a dispersion medium, a production method therefor, and a nanoparticle dispersion liquid and a nanoparticle/matrix-material complex which are colorless and transparent even at high concentrations. In the nanoparticle/dispersant complex, a nanoparticle is covered with a dispersant containing a heterocyclic cationic group and one of an oxo acid group containing a sulfur atom or a phosphorus atom and an anion moiety of the oxo acid group; in the nanoparticle dispersion liquid, the nanoparticle/dispersant complex is dispersed into a dispersion medium; in the nanoparticle/matrix-material complex, the nanoparticle/dispersant complex is dispersed into a matrix material; and the production method for a nanoparticle/dispersant complex comprises forming, under a presence of the dispersant, a nanoparticle covered with the dispersant from a nanoparticle precursor.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: September 24, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kato, Tetsushi Yamamoto
  • Publication number: 20130215495
    Abstract: A nanoparticle waveguide apparatus, a nanoparticle waveguide photonic system and a method of photonic transmission employ a nearfield-coupled nanoparticle (NCN) waveguide to cooperatively propagate an optical signal. The nanoparticle waveguide apparatus includes a first optical waveguide adjacent to a second optical waveguide, the first optical waveguide comprising an NCN waveguide having a plurality of nanoparticles. The nanoparticle waveguide photonic system further includes a nearfield coupling (NC) modulator. The method includes providing the NCN waveguides and modulating a coupling between one or both of first and second NCN waveguides and adjacent nanoparticles within one or both of the first and second NCN waveguides.
    Type: Application
    Filed: October 29, 2010
    Publication date: August 22, 2013
    Inventors: Lars H. Thylen, Alexandre M. Bratkovski, Petter Holmstrom
  • Patent number: 8481616
    Abstract: A two step method for preparing a filler composition, the filler composition useful to prepare a nanocomposite polymer and an epoxy nanocomposite coating. First, disperse a water dispersible filler material in a liquid comprising water, but without any added intercalation agent, to form a dispersion. Second, replace at least a portion of the water of the liquid with an organic solvent so that the water concentration of the liquid is less than six percent by weight to form the filler composition, the average size of at least one dimension of the filler material being less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer can be prepared by mixing the filler composition with one or more polymer, polymer component, monomer or prepolymer to produce a polymer containing the filler composition.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: July 9, 2013
    Assignees: Dow Global Technologies LLC, The Texas A & M University
    Inventors: Luyi Sun, Jae Woong Boo, Hung-jue Sue, Maurice J. Marks, Richard F. Fibiger, Michael S. Paquette
  • Patent number: 8470946
    Abstract: Carbon nanotube (CNT) yarns and sheets having enhanced mechanical strength using infused and bonded nano-resins. A CNT yarn or sheet is surface-activated to produce open bonds in the CNT walls prior to resin infusion. The CNT yarn or sheet is infused with a low viscosity nano-resin that penetrates spaces between individual CNTs and is cured to cross-link and chemically bond to the CNT walls, either directly or through a functional molecule, to bond the individual CNTs or ropes to each other. The nano-resin can comprise dicyclopentadiene having an uncured viscosity near that of water. The cross-linking process involves ring-opening metathesis polymerization and catalysis of the nano-resin in combination with a functionalizing material such as norbornene, to enhance bonding between the carbon and nano-resin. The process increases load capability, tensile strength, and elastic modulus of the yarns and sheets, for use as a structural component in composite materials.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: June 25, 2013
    Assignee: The Regents of the University of California
    Inventor: Lawrence E. Carlson
  • Patent number: 8420717
    Abstract: A method of making a water soluble carbon nanostructure includes treating a fluorinated carbon nanostructure material with a polyol in the presence of a base. A water soluble carbon nanostructure comprises a fluorinated carbon nanostructure covalently bound to a polyol. Exemplary uses of water soluble carbon nanostructures include use in polymer composites, biosensors and drug delivery vehicles.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: April 16, 2013
    Assignee: William Marsh Rice University
    Inventors: Valery N. Khabashesku, Oleksandr Kuznetsov, Rui Lobo
  • Publication number: 20130089587
    Abstract: The present invention relates to a personal care composition and methods of using the same, the composition including an anionic surfactant, a cationic conditioning polymer, and a silicone emulsion wherein a total content of a cyclic polysiloxane having a general formula: is present in the silicone emulsion in an amount less than 2.5 wt % based on the total weight of all polysiloxanes, R is a substituted or unsubstituted C1 to C10 alkyl or aryl, wherein m is 4 or 5, wherein the composition forms coacervate particles upon dilution with water, and wherein a percentage of the coacervate particles with a floc size of greater than about 20 micron is from about 1% to about 60% upon dilution with water.
    Type: Application
    Filed: October 5, 2012
    Publication date: April 11, 2013
    Applicant: THE PROCTER & GAMBLE COMPANY
    Inventor: THE PROCTER & GAMBLE COMPANY
  • Patent number: 8395003
    Abstract: The object of this invention is a suspension of metal nanoparticles with a mean size of between 1 and 20 nanometers, in at least one non-aqueous ionic liquid, whereby said suspension also contains at least one nitrogen-containing ligand, in which said metal nanoparticles comprise at least one transition metal in the zero valence state that is selected from among rhodium, ruthenium, iridium, nickel, and platinum by themselves or in a mixture and in which said nitrogen-containing ligand is selected from the group that is formed by the linear compounds that comprise at least one nitrogen atom, whereby the non-aromatic cyclic compounds comprise at least one nitrogen atom, the non-condensed aromatic compounds comprise at least one nitrogen atom, the condensed aromatic compounds comprise at least one group of two aromatic cycles that are condensed two by two, and at least one nitrogen atom, whereby the condensed aromatic compounds comprise at least 3 aromatic cycles and 1 nitrogen atom, and whereby the condensed ar
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: March 12, 2013
    Assignee: IFP Energies Nouvelles
    Inventors: Bastien Leger, Alain Roucoux, Helene Olivier-Bourbigou
  • Patent number: 8338494
    Abstract: The present invention provides novel nanoscale cellulose particles and also a process for their production. The cellulose-based particles obtained have volume-averaged particle sizes of less than 300 run. These nanoparticles are produced from slightly oxidized cellulose and by input of energy into a water-containing medium after or during dispersion.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: December 25, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Klaus Nachtkamp, Christa Krüger, Jürgen Engelhardt, Volker Kriegisch, Steffen Fischer, Manfred Pinnow, Kay Hettrich
  • Patent number: 8268282
    Abstract: The present invention relates generally to thermally-conductive pastes for use with integrated circuits, and particularly, but not by way of limitation, to self-orienting microplates of graphite.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: September 18, 2012
    Assignee: International Business Machines Corporation
    Inventors: Gareth Hougham, Paul A. Lauro, Brian R. Sundlof, Jeffrey D. Gelorme
  • Patent number: 8263423
    Abstract: Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silican particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: September 11, 2012
    Assignee: NanoGram Corporation
    Inventors: Henry Hieslmair, Shivkumar Chiruvolu, Hui Du
  • Patent number: 8241939
    Abstract: A method for manufacturing a biosensor includes forming a silicon nanowire channel, etching a first conductivity-type single crystalline silicon layer which is a top layer of a Silicon-On-Insulator (SOI) substrate to form a first conductivity-type single crystalline silicon line pattern, doping both sidewalls of the first conductivity-type single crystalline silicon line pattern with impurities of a second conductivity-type opposite to the first conductivity-type to form a second conductivity-type channel, forming second conductivity-type pads for forming electrodes at both ends of the first conductivity-type single crystalline silicon line pattern, forming, in an undoped region of the first conductivity-type single crystalline silicon line pattern, a first electrode for applying a reverse-bias voltage to insulate the first conductivity-type single crystalline silicon line pattern and the second conductivity-type channel from each other, and forming second electrodes for applying a bias voltage across the sec
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: August 14, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chan Woo Park, Chang Geun Ahn, Jong Heon Yang, In Bok Baek, Chil Seong Ah, Han Young Yu, An Soon Kim, Tae Youb Kim, Moon Gyu Jang, Myung Sim Jun
  • Patent number: 8192643
    Abstract: Fluids comprising graphite particles and related methods are generally described. In some embodiments, “microfluids” are described. Generally, the microfluids can comprise a fluid and a plurality of graphite particles with microscale dimensions.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: June 5, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Ruiting Zheng, Jinwei Gao, Gang Chen
  • Patent number: 8187502
    Abstract: Certain spin-coatable liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. A spin-coatable liquid for formation of a nanotube film includes a liquid medium containing a controlled concentration of purified nanotubes, wherein the controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity, and wherein the spin-coatable liquid comprises less than 1×1018 atoms/cm3 of metal impurities. The spin-coatable liquid is substantially free of particle impurities having a diameter of greater than about 500 nm.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: May 29, 2012
    Assignee: Nantero Inc.
    Inventors: Rahul Sen, Ramesh Sivarajan, Thomas Rueckes, Brent M. Segal
  • Publication number: 20120127823
    Abstract: The invention relates to the use of a homogenisation valve that comprises a flap gate (1), an impact ring (3) and a seat in order to prepare, using high-pressure valve technology, a nanosuspension of a solid pharmaceutically active principle, characterized in that the material constituting the flap gate, the seat and optionally the impact ring and/or the outer surface of at least one of said elements includes sintered or hot-pressed silicon nitride as the main component. The invention also relates to a method for preparing a nanosuspension of a solid pharmaceutically active principle using the high-pressure valve homogenization technology.
    Type: Application
    Filed: May 10, 2010
    Publication date: May 24, 2012
    Applicant: SANOFI
    Inventor: Mostafa Nakach
  • Patent number: 8147722
    Abstract: Certain spin-coatable liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. A spin-coatable liquid for formation of a nanotube film includes a liquid medium containing a controlled concentration of purified nanotubes, wherein the controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity, and wherein the spin-coatable liquid comprises less than 1×1018 atoms/cm3 of metal impurities. The spin-coatable liquid is substantially free of particle impurities having a diameter of greater than about 500 nm.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: April 3, 2012
    Assignee: Nantero Inc.
    Inventors: Rahul Sen, Ramesh Sivarajan, Thomas Rueckes, Brent M. Segal
  • Patent number: 8147876
    Abstract: An object of the present invention is to provide a medical agent that has an excellent effect on the diseases resulting from one of inflammation and remodeling and that can prevent or treat them in response to various mechanisms of onset and development of the diseases. Thus, the present invention relates to a medical agent for preventing or treating diseases resulting from one of inflammation and remodeling in blood vessel, including nanobubbles.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: April 3, 2012
    Assignees: National University Corporation Tokyo Medical and Dental University, REO Laboratory, Co., Ltd.
    Inventors: Yukihiro Hojo, Kaneo Chiba, Yoshihiro Mano
  • Patent number: 8114925
    Abstract: A method for preparing a filler composition useful for preparing a nanocomposite polymer is provided. The method includes a first step of dispersing a water dispersible filler material in a liquid comprising water to form a dispersion and a second step of replacing at least a portion of the water of the liquid with an organic solvent. The resulting filler composition features a water concentration of the liquid of less than six percent by weight, and the average size of at least one dimension of the filler material is less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer, particularly and epoxy resin composition, can be prepared by mixing the above-made filler composition with one or more polymer, polymer component, monomer or prepolymer.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: February 14, 2012
    Assignees: Dow Global Technologies LLC, The Texas A&M University
    Inventors: Luyi Sun, Woong Jae Boo, Hung-Jue Sue, Maurice J. Marks, Richard F. Fibiger, Michael S. Paquette
  • Patent number: 8066842
    Abstract: A method of manufacturing a composite material, the method comprising: providing a first layer (14) of CNTs reinforcement elements (13) with liquid matrix material in interstitial gaps between the reinforcement elements; dipping a second layer of reinforcement elements into the liquid matrix material in the interstitial gaps such that the reinforcement elements in the second layer become partially embedded in the first layer of reinforcement elements and partially protrude from the first layer of reinforcement elements, impregnating the protruding parts of the reinforcement elements in the second layer with liquid matrix material; and curing the liquid matrix material.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: November 29, 2011
    Assignee: Airbus Operations Limited
    Inventors: Benjamin Lionel Farmer, Daniel Mark Johns
  • Publication number: 20110278497
    Abstract: A nanometal dispersion and a method for preparing a nanometal dispersion are provided. The method comprises mixing a metal seed crystal aqueous solution, a polysaccharide aqueous solution, and a metal compound aqueous solution, followed by allowing the resulting mixture to conduct a reduction-oxidation reaction to form a nanometal. The produced nanometal dispersion comprises a polysaccharide and a nanometal. The polysaccharide is composed of N-actyl-D-glucosamine and glucuronic acid, and the nanometal has multimorphology.
    Type: Application
    Filed: November 24, 2010
    Publication date: November 17, 2011
    Applicant: CHINA MEDICAL UNIVERSITY
    Inventors: Chih-Wei CHOU, Ko-Hsin Chang, Hui-Hsuan Hsieh
  • Publication number: 20110248210
    Abstract: The invention is a bulk-processed thermoelectric material and a method for fabrication. The material measures at least 30 microns in each dimension and has a figure of merit (ZT) greater than 1.0 at any temperature less than 200° C. The material comprises at least two constituents; a host phase and a dispersed second phase. The host phase is a semiconductor or semimetal and the dispersed phase of the bulk-processed material is comprised of a plurality of inclusions. The material has a substantially coherent interface between the host phase and the dispersed phase in at least one crystallographic direction.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 13, 2011
    Applicant: Carrier Corporation
    Inventors: Rhonda R. Willigan, Susanne M. Opalka, Joseph V. Mantese, Slade R. Culp, Jefferi J. Covington
  • Patent number: 8034317
    Abstract: A composition of matter, includes a plurality of anisotropic nanoparticles that are in physical contact with one another, each of the plurality of anisotropic nanoparticles having a) a first dimension that is substantially different than both a second dimension and a third dimension and b) a non-random nanoparticle crystallographic orientation that is substantially aligned with the first direction. The plurality a anisotropic nanoparticles are substantially aligned with respect to each other to define a substantially close packed dense layer having a non-random shared crystallographic orientation that is substantially aligned with a basal plane of the substantially close packed dense layer. The plurality of anisotropic nanoparticles includes a member selected from the group consisting of (In,Ga)y(S,Se)1-y, an In2Se3 stable wurtzite structure that defines a hexagonal rod nanoparticle, Cux(Se)1-x and Cu(In,Ga)y(S,Se)1-y.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: October 11, 2011
    Assignee: Heliovolt Corporation
    Inventor: Billy J. Stanbery
  • Publication number: 20110204300
    Abstract: [Description] A method for producing a metallic carbon nanotube, by which a dispersion with a high concentration can be obtained. Specifically disclosed is a method for producing a metallic carbon nanotube, which comprises a fullerene addition step wherein fullerenes are added into a carbon nanotube-containing solution in which metallic carbon nanotubes and semiconductive carbon nanotubes are mixed, and a taking-out step wherein carbon nanotubes dispersed by the added fullerenes are taken out.
    Type: Application
    Filed: October 22, 2009
    Publication date: August 25, 2011
    Applicant: Kuraray Co., Ltd.
    Inventor: Takahiro Kitano
  • Publication number: 20110204296
    Abstract: The present invention relates to a process for producing a composite having a reduced electrical resistance which comprises providing a mixture comprising a fluid material and carbon nanotubes (CNTs) having a predeterminable size distribution, and subjecting the mixture to a minimum stress in a dispersing machine, wherein the minimum stress is determined empirically as a function of the predetermined size distribution.
    Type: Application
    Filed: August 7, 2009
    Publication date: August 25, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Carsten Conzen, Michael Bierdel, Udo Dünger, Maren Heinemann, Thomas König, Björn Walter, Jörg Metzger, Peter Heidemeyer, Werner Wiedmann
  • Patent number: 8003551
    Abstract: The present invention provides means and methods for producing surface-activated semiconductor nanoparticles suitable for in vitro and in vivo applications that can fluoresce in response to light excitation. Semiconductor nanostructures can be produced by generating a porous layer in semiconductor substrate comprising a network of nanostructures. Prior or subsequent to cleavage from the substrate, the nanostructures can be activated by an activation means such as exposing their surfaces to a plasma, oxidation or ion implantation. In some embodiments, the surface activation renders the nanostructures more hydrophilic, thereby facilitating functionalization of the nanoparticles for either in vitro or in vivo use.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: August 23, 2011
    Assignee: Spire Corporation
    Inventors: Nader Montazernezam Kalkhoran, James G. Moe, Kurt J. Linden, Marisa Sambito
  • Publication number: 20110198533
    Abstract: The present invention provides novel nanoscale cellulose particles and also a process for their production. The cellulose-based particles obtained have volume-averaged particle sizes of less than 300 run. These nanoparticles are produced from slightly oxidized cellulose and by input of energy into a water-containing medium after or during dispersion.
    Type: Application
    Filed: August 8, 2008
    Publication date: August 18, 2011
    Inventors: Klaus Nachtkamp, Christa Krüger, Jürgen Engelhardt, Volker Kriegisch, Steffen Fischer, Manfred Pinnow, Kay Hettrich
  • Publication number: 20110144061
    Abstract: Provided are a nanoparticle/dispersant complex having excellent dispersibility and long-term stability in a dispersion medium, a production method therefor, and a nanoparticle dispersion liquid and a nanoparticle/matrix-material complex which are colorless and transparent even at high concentrations. In the nanoparticle/dispersant complex, a nanoparticle is covered with a dispersant containing a heterocyclic cationic group and one of an oxo acid group containing a sulfur atom or a phosphorus atom and an anion moiety of the oxo acid group; in the nanoparticle dispersion liquid, the nanoparticle/dispersant complex is dispersed into a dispersion medium; in the nanoparticle/matrix-material complex, the nanoparticle/dispersant complex is dispersed into a matrix material; and the production method for a nanoparticle/dispersant complex comprises forming, under a presence of the dispersant, a nanoparticle covered with the dispersant from a nanoparticle precursor.
    Type: Application
    Filed: July 27, 2009
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun Kato, Tetsushi Yamamoto
  • Patent number: 7939048
    Abstract: Methods for assemblies of anisotropic nanoparticles which includes forming a substantially close packed dense layer by assembling a plurality of anisotropic nanoparticles, each of the plurality of anisotropic nanoparticles having a) a first dimension that is substantially different than both a second dimension and a third dimension and b) a non-random nanoparticle crystallographic orientation that is substantially aligned with the first direction, wherein assembling includes mechanically interacting the plurality of anisotropic nanoparticles by imposing a delocalized force that defines a direction that is substantially perpendicular to a basal plane of the substantially closed packed dense layer; and imposing a fluctuating force to which the anisotropic nanoparticles respond, which is sufficient to overcome a short range weak attractive force between members of the plurality of anisotropic nanoparticles with respect to anisotropic nanoparticles that are not substantially overlapping.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: May 10, 2011
    Assignee: HelioVolt Corporation
    Inventor: Billy J. Stanbery
  • Publication number: 20110085166
    Abstract: Provided herein are new methods and apparatus for quantitative measurement and analysis of particles, including new apparatus systems to process and detect nanoparticles in suspension. By focusing a laser beam at the center of a reservoir, nanoparticles are concentrated by optical energy, and fluorescent intensity at the focal point of the laser is measured to quantify particle concentration in the reservoir. The techniques may be applied to the analysis of suspensions of nanoparticles, including natural particles (e.g., microorganisms including whole viruses, bacteria, animal cells, and proteins) and synthetic particles (e.g., colloidal latexes, paints, pigments, and metallic or semiconductor nanoparticles) for medical and industrial applications, among others.
    Type: Application
    Filed: March 2, 2009
    Publication date: April 14, 2011
    Applicant: LEHIGH UNIVERSITY
    Inventors: H. Daniel Ou-Yang, Xuanhong Cheng
  • Publication number: 20110081494
    Abstract: A nanocomposite having a nanomaterial dispersed into a polymer matrix, in one embodiment exfoliated nanoclay dispersed in a polyurea matrix. A method of making PU-nanocomposites for coatings for improved mechanical properties, in one embodiment the method comprises obtaining and treating a nanomaterial, dispersing the nanomaterial into a pre-polymer matrix, mixing the pre-polymer matrix under heating to form a coating; and depositing the coating on a substrate.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Applicant: UNIVERSITY OF HOUSTON
    Inventors: Valery KHABASHESKU, Ramanan KRISHNAMOORTI, Baburaj ERANEZHUTH
  • Patent number: 7914617
    Abstract: Nanoparticle dispersions, inks, pastes, lotions and methods of their manufacture are disclosed. Multifunctional, nanocomposite, hollow nanoparticles, and coated nanoparticle dispersions are also discussed.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 29, 2011
    Inventor: Tapesh Yadav
  • Patent number: 7910627
    Abstract: Suppression or enhancement of various properties of a liquid fluid is aimed by improving uniform dispersion of nanoparticles by means of making a state in which no oxidized film exists on the surfaces of the nanoparticles to be dispersed in the liquid fluid. The location of the liquid fluid is confirmed with ease by enhancing the brightness of light emission of the fluid through uniform dispersion of the nanoparticles in the liquid fluid containing a material having a flame reaction. In this way, as to liquid fluids utilized in various industries, it is possible to offer a technology to desirably enhance or suppress a property desired to be enhanced and a property desired to be suppressed among various properties that its constituents have.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: March 22, 2011
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Mikio Toda, Toshiro Nishi, Nobuki Oka, Hiroyuki Tsutaya, Kuniaki Ara, Hiroaki Ohira, Kazuya Kurome, Naoki Yoshioka
  • Publication number: 20110049415
    Abstract: Provided are a method for preparing zinc oxide (ZnO) nanoparticles and a method for preparing ZnO nanofluid using the same. The method for preparing ZnO nanoparticles includes: a) heating deionized water; b) dissolving zinc (Zn) salt in the deionized water to prepare a precursor solution; c) adding solid alkali salt to the precursor solution to prepare a dispersion of ZnO nanoparticles; and d) separating the ZnO nanoparticles by solid-liquid separation and washing them with deionized water. Highly pure, crystalline ZnO nanoparticles with spherical shape and very narrow particle size distribution of 10 to 50 nm can be prepared quickly and at large scale and low cost using inexpensive materials via a stable low-temperature process, without using a dispersant. The associated low-temperature, normal-pressure process produces few harmful materials and may be easily employed for production of ZnO nanoparticles.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 3, 2011
    Applicant: Korea Institute of Geoscience and Mineral Resources (KIGAM)
    Inventors: Hyo-sook Lee, Yong Jae Suh, Dae Sup Kil, Kuk Cho
  • Patent number: 7892872
    Abstract: Highly uniform silica nanoparticles can be formed into stable dispersions with a desirable small secondary particle size. The silican particles can be surface modified to form the dispersions. The silica nanoparticles can be doped to change the particle properties and/or to provide dopant for subsequent transfer to other materials. The dispersions can be printed as an ink for appropriate applications. The dispersions can be used to selectively dope semiconductor materials such as for the formation of photovoltaic cells or for the formation of printed electronic circuits.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: February 22, 2011
    Assignee: NanoGram Corporation
    Inventors: Henry Hieslmair, Shivkumar Chiruvolu, Hui Du
  • Patent number: 7883641
    Abstract: In accordance with the present invention, there are provided metal oxide-based phosphor microfine particles comprising a matrix crystal made of a metal oxide and a metal element doped as an emission center into the matrix crystal, wherein the microfine particles are provided with an organic group coordinated to a surface thereof, have a small particle size as well as a high affinity to and a high dispersibility in light-transmittable resins, and are inhibited from scattering light emitted from a light source; a process for producing the metal oxide-based phosphor microfine particles; a dispersion of the metal oxide-based phosphor microfine particles; a fluorescent conversion film; a method of separating the metal oxide-based phosphor microfine particles; a fluorescent liquid; a fluorescent paste; a phosphor; a process for producing the phosphor; and a fluorescent converter.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: February 8, 2011
    Assignees: Keio University, Idemitsu Kosan Co., Ltd.
    Inventors: Tetsuhiko Isobe, Ryo Kasuya, Aya Kawano, Hitoshi Kuma, Junichi Katano
  • Publication number: 20110001081
    Abstract: A nanofluid of a base heat transfer fluid and a plurality of ceramic nanoparticles suspended throughout the base heat transfer fluid applicable to commercial and industrial heat transfer applications. The nanofluid is stable, non-reactive and exhibits enhanced heat transfer properties relative to the base heat transfer fluid, with only minimal increases in pumping power required relative to the base heat transfer fluid. In a particular embodiment, the plurality of ceramic nanoparticles comprise silicon carbide and the base heat transfer fluid comprises water and water and ethylene glycol mixtures.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 6, 2011
    Inventors: Dileep SINGH, Jules Routbort, Wenhua Yu, Elena Timofeeva, David S. Smith, David M. France, Alexander Heifetz
  • Publication number: 20110003721
    Abstract: The present invention relates to compositions of a nanofluid, which comprises a thermal transfer fluid and carbon nanoparticles. The nanofluid may be hydrophilic nanofluids, such as a coolant, or hydrophobic nanofluids, such as nanolubricants or nanogreases. In particular, the present invention provides a homogenous hydrophilic nanofluid, which contains soluble carbon nanotubes in the hydrophilic thermal transfer fluid. The present invention also provides a nanogrease, which is a sustainable dispersion of solid carbon nanotubes in a hydrophobic thermal transfer fluid. The solid carbon nanotubes function as both as a thickener to modulate viscosity and as a solid heat transfer medium to enhance thermal conductivity and high temperature resistance.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 6, 2011
    Inventors: Haiping Hong, John Andrew Waynick
  • Patent number: 7838933
    Abstract: A method of depositing elongated nanostructures that allows accurate positioning and orientation is described. The method involves printing or otherwise depositing elongated nanostructures in a carrier solution. The deposited droplets are also elongated, usually by patterning the surface upon which the droplets are deposited. As the droplet evaporates, the fluid flow within the droplets is controlled such that the nanostructures are deposited either at the edge of the elongated droplet or the center of the elongated droplet. The described deposition technique has particular application in forming the active region of a transistor.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: November 23, 2010
    Inventors: Michael L. Chabinyc, William S. Wong
  • Publication number: 20100288472
    Abstract: A nanofluid is generally provided for use in a heat transfer system. The nanofluid can include nanoparticles suspended in a base liquid at a nanoparticle concentration in the nanofluid of about 0.01% to about 5% by volume. The nanoparticles can include zinc-oxide nanoparticles. The nanofluid for use in a heat transfer system can, in one embodiment, further include a surfactant. Thermal management systems configured to cool a computer having integrated circuits that generate heat during use are also provided. The thermal management system can include a zinc-oxide nanofluid circulated through a series of tubes via a pump such that heat produced by electronic components of the computer can be captured by the circulating nanofluid and then removed from the nanofluid by a radiator.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 18, 2010
    Applicant: UNIVERSITY OF SOUTH CAROLINA
    Inventors: Dale A. McCants, Andrew M. Hayes
  • Patent number: 7811470
    Abstract: A water based colorant that includes a polymer emulsion and semiconductor crystals capable of emitting light. The colorants include paints, inks and/or dyes can be applied to various substrates.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: October 12, 2010
    Assignee: Evident Technologies
    Inventors: James Hayes, Luis Sanchez
  • Patent number: 7662467
    Abstract: A CNT composite (10) includes a matrix (14) and a number of CNTs (12) embedded in the matrix. The matrix has a surface (102) and an opposite surface (104). Head portions of the respective CNTs are consistently oriented, parallel to the surfaces of the matrix. A method for manufacturing the composite includes (a) providing a substrate and depositing a catalyst film on the substrate; (b) forming the array of CNTs via the catalyst film on the substrate; (c) immersing the CNTs in a liquid matrix material, infusing the liquid matrix material into the array of CNTs; (d) taking the carbon nanotubes with the infused matrix out of the liquid matrix; (e) pressing the still-soft matrix and the CNTs therein, in order to arrange the CNTs consistently and parallel to the surfaces of the matrix; and (f) solidifying and peeling away the matrix to produce the CNT composite.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: February 16, 2010
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Qing-Wei Li, Chang-Hong Liu, Shou-Shan Fan