With Polymeric Or Organic Binder Patents (Class 977/753)
  • Publication number: 20110178224
    Abstract: A nanocomposite composition having a silicone elastomer matrix having therein a filler loading of greater than 0.05 wt %, based on total nanocomposite weight, wherein the filler is functional graphene sheets (FGS) having a surface area of from 300 m2/g to 2630 m2/g; and a method for producing the nanocomposite and uses thereof.
    Type: Application
    Filed: November 12, 2010
    Publication date: July 21, 2011
    Applicant: The Trustees of Princeton University
    Inventors: Shuyang Pan, Ilhan A. Aksay, Robert K. Prud'Homme
  • Patent number: 7977423
    Abstract: Carbon nanotube reinforced polymers include a polymer and carbon nanotubes reinforcing the polymer. The carbon nanotube reinforced polymer exhibits a conductivity percolation threshold of less than 106 ?/cm at a carbon nanotube content of 1.5 wt. % and less. The polymer may be selected from a polyamide or a polystyrene based polymer. In certain embodiments, the carbon nanotube content is between 0.1 to 1.5 wt. %, and the reinforced polymer will have a percolation threshold at a carbon nanotube content of less than 0.5 wt. %.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: July 12, 2011
    Assignees: Stichting Dutch Polymer Institute, Ben-Gurion University of the Negev Research and Development Authority
    Inventors: Cornelis E. Koning, Oren Regev, Joachim Loos
  • Patent number: 7959940
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: June 14, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: David C. Gale, Yunbing Wang, Syed Faiyaz Ahmed Hossainy, Bin Huang, Garth L. Wilkes, Vincent J. Gueriguian
  • Patent number: 7959969
    Abstract: A method of fabricating optical energy collection and conversion devices using carbon nanotubes (CNTs), and a method of anchoring CNT's into thin polymeric layers is disclosed. The basic method comprises an initial act of surrounding a plurality of substantially aligned nanostructures within at least one fluid layer of substantially uniform thickness such that a first end of the plurality of nanostructures protrudes from the fluid layer. Next, the fluid layer is altered to form an anchoring layer, thereby fastening the nanostructures within the primary anchoring layer with the first ends of the nanostructures protruding from a first surface of the primary anchoring layer. Finally, a portion of the anchoring layer is selectively removed such that a second end of the nanostructures is exposed and protrudes from the anchoring layer. The resulting product is an optically absorbent composite material having aligned nanostructures protruding from both sides of an anchoring layer.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: June 14, 2011
    Assignee: California Institute of Technology
    Inventors: Elijah B. Sansom, Morteza Gharib, Derek Rinderknecht
  • Patent number: 7955644
    Abstract: A method is provided for creating composites by combining pre-fabricated nanoscale structures (nanostructures) and other materials in which the nanostructures are anchored. This method results in anchored nanostructures with their base held and encased within the anchoring material to a specified depth and with a specified length of protrusion of the nanostructures from the anchoring material. This represents a major advance over previous methods of creating composites containing nanostructures which were limited to fully embedded nanostructures or, at best, very limited and uncontrolled protrusion of nanostructures. In summary, the current method involves bringing nanostructures and anchoring materials into physical contact in a controlled fashion and optionally conducting a treatment step to complete the anchoring process.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: June 7, 2011
    Assignee: California Institute of Technology
    Inventors: Elijah Sansom, Derek Rinderknecht, Morteza Gharib
  • Patent number: 7939092
    Abstract: Described is an implantable medical material comprising a malleable, cohesive, shape-retaining putty including mineral particles, insoluble collagen fibers and soluble collagen. The medical material can be used in conjunction with biologically active factors such as osteogenic proteins to treat bone or other tissue defects in patients.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: May 10, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: William F. McKay, Steve Peckham, Jeffrey L. Scifert
  • Patent number: 7935683
    Abstract: Disclosed is a complex which comprises a carbon nanotube and a modified polysaccharide having a backbone chain with the side thereof being introduced with monosaccharide or oligosaccharide residues. The polysaccharide is preferably ?-1,3-glucan. The complex is prepared by admixing a solution of the modified polysaccharide dissolved in an aprotic polar solvent or a strong alkali solution with an aqueous dispersion of the carbon nanotube, and incubating the mixture.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: May 3, 2011
    Assignees: Japan Science and Technology Agency, Mitsui Sugar Co., Ltd.
    Inventors: Masami Mizu, Seiji Shinkai, Teruaki Hasegawa, Munenori Numata, Tomohisa Fujisawa, Kazuo Sakurai
  • Patent number: 7935276
    Abstract: The present invention relates to novel composites that incorporate carbon nanospheres into a polymeric material. The polymeric material can be any polymer or polymerizable material compatible with graphitic materials. The carbon nanospheres are hollow, graphitic nanoparticles. The carbon nanospheres can be manufactured from a carbon precursor using templating catalytic nanoparticles. The unique size, shape, and electrical properties of the carbon nanospheres impart beneficial properties to the composites incorporating these nanomaterials.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 3, 2011
    Assignee: Headwaters Technology Innovation LLC
    Inventors: Bing Zhou, Cheng Zhang, Martin Fransson, Raymond B. Balée
  • Patent number: 7898079
    Abstract: A heat-conducting medium for placement between a heat source and heat sink to facilitate transfer of heat from the source to the sink is provided. The heat-conducting medium can include a flexible member made from an array of interweaving carbon nanotubes. The heat-conducting medium may also include an upper surface against which a heat source may be placed, an opposing lower surface and edges about the member designed for coupling to a heat sink toward which heat from the heat source can be directed. The heat-conducting medium may also include a pad placed on the upper surface to provide structural support to the member. A method for manufacturing the heat-conducting medium is also provided.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: March 1, 2011
    Assignee: Nanocomp Technologies, Inc.
    Inventors: David S. Lashmore, Joseph J. Brown
  • Publication number: 20110034008
    Abstract: A method of forming a textured surface on a substrate or material layer within a semiconductor fabrication process. In one aspect of the disclosure, a sacrificial nanofabric layer is deposited over a material layer and an etch process is used to transfer the surface texture of the nanofabric layer downward to the material layer. In another aspect of the disclosure, a thin material layer is deposited over a nanofabric layer such that the surface texture of the nanofabric layer is transferred upward to the material layer. Within both aspects, varying the porosity of nanofabric layer provides a measure of control over the degree of texturization of the material layer.
    Type: Application
    Filed: August 7, 2009
    Publication date: February 10, 2011
    Applicant: Nantero, Inc.
    Inventor: Sohrab Kianian
  • Publication number: 20110014466
    Abstract: Exemplary embodiments provide materials and methods for composite materials that can include core-shell nano-fibril fillers dispersed in a plastic matrix, the core-shell nano-fibril filler including a carbon nanotube surrounded by a soft shell that includes one or more elastomers.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 20, 2011
    Applicant: XEROX CORPORATION
    Inventors: Nan-Xing HU, Yu Qi
  • Patent number: 7863111
    Abstract: Provided are a thin film transistor for display devices and a manufacturing method of the thin film transistor. The thin film transistor for display devices includes: a flexible substrate; a gate electrode layer formed on the flexible substrate; a first insulating layer formed on the flexible substrate and the gate electrode; a source and a drain formed on the first insulating layer; an active layer formed on the first insulating layer between the source and the drain; a second insulating layer formed on the first insulating layer, the source, the drain, and the active layer; and a drain electrode that opens the second insulating layer to be connected to the drain and is formed of a CNT dispersed conductive polymer.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-seong Kim, Euk-che Hwang, Ki-deok Bae, Chang-seung Lee, Hyeon-Jin Shin
  • Publication number: 20100304136
    Abstract: Composite materials comprise nanotubes and a polymer. The nanotubes and polymer interact in an ordered fashion at an interfacial region. The interface is crystalline or semi crystalline.
    Type: Application
    Filed: September 25, 2006
    Publication date: December 2, 2010
    Inventors: Jonathan Coleman, Werner Blau, Martin Cadek
  • Publication number: 20100291438
    Abstract: The invention provides an anode comprising a nanocomposite of graphene-oxide and a silicon-based polymer matrix. The anode exhibits a high energy density such as ˜800 mAhg?1 reversible capacity, a superlative power density that exceeds 250 kW/kg, a good stability, and a robust resistance to failure, among others. The anodes can be widely used in a lithium-ion battery, an electric car, a hybrid electromotive car, a mobile phone, and a personal computer etc. The invention also provides a liquid phase process and a solid-state process for making the nanocomposite, both involving in-situ reduction of the graphene-oxide during a pyrolysis procedure.
    Type: Application
    Filed: June 12, 2009
    Publication date: November 18, 2010
    Inventors: Dongjoon Ahn, Myongjai Lee, Sandeep R. Shah
  • Publication number: 20100276644
    Abstract: Process for producing nitrogen-doped carbon nanotubes (NCNTs) in a fluidized bed.
    Type: Application
    Filed: December 9, 2008
    Publication date: November 4, 2010
    Applicant: BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Aurel Wolf, Volker Michele, Leslaw Mleczko, Jens Assmann, Sigurd Buchholz
  • Publication number: 20100247923
    Abstract: The present invention relates to electrically conductive polymer compositions, and their use in electronic devices. The compositions are an aqueous dispersion including: (i) at least one electrically conductive polymer doped with a non-fluorinated polymeric acid; (ii) at least one highly-fluorinated acid polymer; (iii) at least one high-boiling polar organic solvent, and (iv) nanoparticles of at least one semiconductive metal oxide. The composition may further include an additive which can be one or more of fullerenes, carbon nanotubes, or combinations thereof.
    Type: Application
    Filed: March 18, 2009
    Publication date: September 30, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Che-Hsiung Hsu
  • Patent number: 7799861
    Abstract: The present invention provides a CNT/polymer composite, in which properties of the polymer is modified and improved. The present invention also relates to a method for producing the CNT/polymer composite.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: September 21, 2010
    Inventors: Kuan-Jiuh Lin, Jun-Wei Su
  • Publication number: 20100234503
    Abstract: A polymer composite includes a polymer matrix and an alkyl-substituted carbon nanotube. A polymer composite also includes a polymer matrix and a fluorinated carbon nanotube reacted with urea, thiourea, or guanidine. A method of functionalizing a carbon nanotube includes heating a fluorinated carbon nanotube urea, thiourea, or guanidine. A substituted carbon nanotube includes a fluorinated carbon nanotube and amino silane compounds The amino silane compounds covalently link to the fluorinated nanotube through the amino functional group. Polymer composites, ceramics and surface coating materials may be constructed from these substituted carbon nanotubes.
    Type: Application
    Filed: August 10, 2007
    Publication date: September 16, 2010
    Inventors: Valery N. Khabashesku, Merlyn X. Pulikkathara
  • Patent number: 7785557
    Abstract: A transparent and conductive film comprising at least one network of graphene flakes is described herein. This film may further comprise an interpenetrating network of other nanostructures, a polymer and/or a functionalization agent(s). A method of fabricating the above device is also described, and may comprise depositing graphene flakes in solution and evaporating solvent therefrom.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: August 31, 2010
    Assignee: Unidym, Inc.
    Inventors: George Gruner, David Hecht, Liangbing Hu
  • Publication number: 20100187468
    Abstract: Embodiments of the invention relate to a composite hydrogen storage material comprising active material particles and a binder, wherein the binder immobilizes the active material particles sufficient to maintain relative spatial relationships between the active material particles.
    Type: Application
    Filed: March 19, 2010
    Publication date: July 29, 2010
    Applicant: Angstrom Power Inc.
    Inventor: Joerg Zimmermann
  • Patent number: 7754107
    Abstract: A carbon nanotube is described, to which quantum dots are attached through non-covalent bonding via linking molecules bonded to the quantum dots. A method of visualizing a carbon nanotube is also described, wherein quantum dots are attached to the carbon nanotube through non-covalent bonding via linking molecules bonded to the quantum dots, and then the quantum dots are made emit light. This invention allows carbon nanotubes, even those in a wet condition, to be visualized by a simple fluorescent optical microscope. Thereby, the difficulties on preparing specimens and the need of sophisticated instruments can be reduced. This invention also exhibits great potential for the application of carbon nanotubes under a wet condition.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: July 13, 2010
    Assignee: National Tsing Hua University
    Inventors: Ning-Yu Wu, Yi-Yang Chen, Tri-Rung Yew
  • Patent number: 7741416
    Abstract: The present invention relates to colloidal photonic crystals using colloidal nanoparticles and a method for the preparation thereof, wherein by adding a viscoelastic material into a solution containing the colloidal nanoparticles when preparing the colloidal photonic crystals, a uniform volume contraction occurs due to the elasticity of the viscoelastic material even when a nonuniform volume contraction occurs while drying a dispersion medium in the colloidal solution. Thus, it is possible to prepare 2 or 3 dimensional colloidal photonic crystals of large scale with no defects in less time.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: June 22, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Young-jun Hong, Sang-hyuk Im
  • Patent number: 7682694
    Abstract: Method and system for making a low cost, light weight impact deflecting material, comprising directionally aligned single walled carbon nanotubes in an epoxy resin composition, that is near impervious to bullets fired at close range at all angles of incidence, that does not deteriorate upon abrasion or when exposed to wide ranges of temperature and humidity, and that when used to construct a protective shield for a body armor vest protects the wearer from blunt trauma effects.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: March 23, 2010
    Assignee: Block Textiles, Inc.
    Inventors: Graham E. Gintz, Christopher J Gintz, Timothy J. Imholt, David L. Allara
  • Patent number: 7674410
    Abstract: A method for manufacturing a thermal interface material comprising the steps of: providing a carbon nanotube array comprising a plurality of carbon nanotubes each having two opposite ends; forming a composite phase change material by filling clearances in the carbon nanotube array with a phase change material; forming a section with predetermined thickness by cutting the composite phase change material along a direction cross to an alignment direction of the carbon nanotubes; and heating up the section to a temperature higher than a phase change temperature of the phase change material and cooling down after the two opposite ends of the carbon nanotubes protruding out of the section.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: March 9, 2010
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Hua Huang, Yang Wu, Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 7658865
    Abstract: Conducting liquid crystal polymer matrix comprising carbon nanotubes aligned in the matrix is provided, along with use thereof and method of fabrication.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: February 9, 2010
    Assignee: International Business Machines Corporation
    Inventor: Minhua Lu
  • Patent number: 7658869
    Abstract: Certain applicator liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. An applicator liquid for preparation of a nanotube film or fabric includes a controlled concentration of nanotubes dispersed in ethyl lactate. The controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: February 9, 2010
    Assignee: Nantero, Inc.
    Inventors: Rahul Sen, Ramesh Sivarajan, Thomas Rueckes, Brent M. Segal
  • Patent number: 7645400
    Abstract: The object of the present invention is to provide a carbon nanotube composition that does not impair the characteristics of the carbon nanotubes itself, allows the carbon nanotubes to be dispersed or solubilized in a solvent, does not cause separation or aggregation of the carbon nanotubes even during long-term storage, has superior electrical conductivity, film formability and moldability, can be easily coated or covered onto a base material, and the resulting coated film has superior moisture resistance, weather resistance and hardness; a composite having a coated film composed thereof; and, their production methods.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: January 12, 2010
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventor: Takashi Saitoh
  • Patent number: 7601421
    Abstract: The present invention is directed to methods of integrating carbon nanotubes into epoxy polymer composites via chemical functionalization of carbon nanotubes, and to the carbon nanotube-epoxy polymer composites produced by such methods. Integration is enhanced through improved dispersion and/or covalent bonding with the epoxy matrix during the curing process. In general, such methods involve the attachment of chemical moieties (i.e., functional groups) to the sidewall and/or end-cap of carbon nanotubes such that the chemical moieties react with either the epoxy precursor(s) or the curing agent(s) (or both) during the curing process. Additionally, in some embodiments, these or additional chemical moieties can function to facilitate dispersion of the carbon nanotubes by decreasing the van der Waals attractive forces between the nanotubes.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: October 13, 2009
    Assignee: William Marsh Rice University
    Inventors: Valery N. Khabashesku, Jiang Zhu, Haiqing Peng, Enrique V. Barrera, John L. Margrave, Mary Lou Margrave, legal representative
  • Patent number: 7569637
    Abstract: The present invention relates to a process for the preparation of a carbon nanotubes reinforced polymer. The process comprises the following steps: a) contacting carbon nanotubes in an aqueous medium with a water-soluble component, comprising either a water-soluble first polymer or a water-soluble surfactant; b) mixing the resulting product from step A) with either an aqueous latex of a second polymer, or with (a) water-soluble precursor(s) of a second polymer; c) removing water from the so obtained mixture; d) heating the product from step C) to a temperature at which the second polymer flows or where the second polymer is formed from out of its precursor(s); and e) processing and/or solidifying the product of step D) into a desired form. As a result the carbon nanotubes retain essentially their original aspect ratio. As a result, mechanical and conductivity properties are improved.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: August 4, 2009
    Assignees: Stichting Dutch Polymer Institute, Ben-Gurion University of the Negev Research and Development Authority
    Inventors: Cornelis E. Koning, Oren Regev, Joachim Loos
  • Patent number: 7553371
    Abstract: Porous and/or curved nanofiber bearing substrate materials are provided having enhanced surface area for a variety of applications including as electrical substrates, semipermeable membranes and barriers, structural lattices for tissue culturing and for composite materials, production of long unbranched nanofibers, and the like.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: June 30, 2009
    Assignee: Nanosys, Inc.
    Inventors: Robert Dubrow, Carlos Guillermo Casillas, William P. Freeman, Jay L. Goldman, Veeral Dilip Hardev, Francisco Leon, Chunming Niu, Cheri X. Y. Pereira
  • Publication number: 20090152508
    Abstract: The disclosed is a conductive coating material which includes an organic binder component and carbon fibrous structures, wherein the carbon fibrous structure comprises a three dimensional network of carbon fibers each having an outside diameter of 15-100 nm, wherein the carbon fibrous structure further comprises a granular part with which the carbon fibers are tied together in the state that the concerned carbon fibers are externally elongated therefrom, and wherein the granular part is produced in a growth process of the carbon fibers; and wherein the carbon fibrous structures are contained at a rate of 0.01-50% by weight based on the total weight of the coating material. The conductive coating material gives a coated film which shows a high electrical conductivity and a good film strength, and also coordinates its color as an intended one easily.
    Type: Application
    Filed: October 24, 2006
    Publication date: June 18, 2009
    Applicants: BUSSAN NANOTECH RESEARCH INSTITUTE INC., MITSUI & CO., LTD
    Inventors: Koichi Handa, Subiantoro N/A, Takayuki Tsukada, Tsuyoshi Okubo, Jiayi Shan, Akira Yamauchi, Manabu Nagashima
  • Publication number: 20090142545
    Abstract: Disclosed is a composition, in particular a dispersion, which contains nanofiber material in at least one organic matrix component, said nanofiber material being pre-treated in at least one method step for adjusting the physical properties of the composition.
    Type: Application
    Filed: August 17, 2006
    Publication date: June 4, 2009
    Inventors: Ka Chun Tse, Ben Zhong Tang, Ernst Hammel, Xinhe Tang
  • Patent number: 7541390
    Abstract: A composition for preparing an electron emitter, an electron emitter produced by using the composition, and an electron emission device comprising the electron emitter are provided. The composition for preparing an electron emitter includes carbon-based materials and vehicles, wherein the vehicles comprise a polymer having a vinyl pivalate monomer. The composition for preparing an electron emitter improves a printing and a current-voltage characteristic simultaneously.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: June 2, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chang-Wook Kim, Hyun-Jee Lee, Soo-Jin Park, Dong-Hyun Jung, Dae-Yup Shin, Seung-Hoon Choi
  • Patent number: 7537825
    Abstract: A hybrid nanocomposite architecture is presented. The architecture includes a first composite ply oriented at a first orientation. The architecture also includes a carbon nanotube (CNT) film layer including a plurality of CNT pellets disposed therein, each of the CNT bundles including a plurality of CNTs extending from the bottom surface of the CNT film layer to a top surface of the CNT film layer, the CNT film layer disposed in an abutting relationship with the first composite ply. The architecture further includes a second composite ply which may be oriented at a second orientation, the second composite ply disposed in an abutting relationship with the CNT film layer, and wherein the CNTs of the CNT film layer act as a penetrating bridge across an interface between the first composite ply and the second composite ply.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: May 26, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Brian Lee Wardle, Sang-Gook Kim
  • Publication number: 20090105386
    Abstract: In order to isolate and purify an endohedral fullerene, a solvent washing was performed using toluene to concentrate the endohedral fullerene in a residual, but endohedral fullerene could not be efficiently purified because impurities other than the endohedral fullerene could not be sufficiently removed. Thus, the endohedral fullerene is isolated and purified by using a solvent such as chloronaphthalene or tetralin having a high solubility for the endohedral fullerene and concentrating the endohedral fullerene in the solvent. The endohedral fullerene isolated and purified by solvent extraction has a cluster structure where the endohedral fullerene is surrounded with empty fullerenes. Thus, this endohedral fullerene is highly stable and is a useful material applicable to various fields such as medical care and electronics.
    Type: Application
    Filed: April 20, 2007
    Publication date: April 23, 2009
    Inventors: Hiroshi Okada, Yoshinori Sibata, Kuniyoshi Yokoo, Yuzo Mizobuchi, Kenji Omote, Yasuhiko Kasama
  • Patent number: 7504051
    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 containing nanotubes for use in an electronics fabrication process includes a solvent containing a plurality of nanotubes. The nanotubes are at a concentration of greater than 1 mg/L. The nanotubes are pretreated to reduce the level of metallic and particulate impurities to a preselected level, and the preselected metal and particulate impurities levels are selected to be compatible with an electronics manufacturing process. The solvent also is selected for compatibility with an electronics manufacturing process.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 17, 2009
    Assignee: Nantero, Inc.
    Inventors: Rahul Sen, Ramesh Sivarajan, Thomas Rueckes, Brent M. Segal
  • Patent number: 7491968
    Abstract: A memory device, which includes a memory layer having quantum dots uniformly dispersed in organic material disposed between an upper electrode layer and a lower electrode layer. The memory device is advantageous because it is nonvolatile and inexpensive, and realizes high integration and high speed switching. Further, size and distribution of the quantum dots may be uniform, thus realizing uniform memory behavior. Furthermore, the memory device is suitable for application to portable electronic devices that must have low power consumption, due to low operating voltages thereof.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: February 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon Sok Kang, Sang Kyun Lee, Won Jae Joo
  • Patent number: 7481952
    Abstract: The present invention is directed to a fluoropolymer tape having an electrically conductive surface. More specifically, the present invention is directed to a polytetrafluoroethylene (PTFE) tape and method for producing an electrically conductive tape by blending vapor-grown carbon fiber or carbon nanotubes or combinations of both with PTFE.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: January 27, 2009
    Assignee: Compagnie Plastic Omnium
    Inventors: Jiaxiang Ren, Bernd Schulte-Ladbeck
  • Publication number: 20090008611
    Abstract: [Problems to be Solved] The invention provides inexpensive carbon fiber filler material, which has a low content of metal impurity and enables the resin composite material to exhibit conductivity when added thereto in a small amount. [Means to Solve the Problem] (1) carbon nanofiber containing iron (Fe) of 6 mass % or less and vanadium (V) of 3 mass % or less as a metal impurity other than carbon, which does not substantially contain metal elements other than Fe and V, (2) a method for producing carbon nanofiber characterized in contacting a catalyst in which Fe and V are supported on a carbon support and a carbon-containing compound at a high temperature, (3) a resin composite material in which the carbon nanofiber is blended and (4) use thereof.
    Type: Application
    Filed: May 30, 2008
    Publication date: January 8, 2009
    Applicant: SHOWA DENKO K.K.
    Inventors: Gaku ORIJI, Eiji Kambara
  • Publication number: 20080318026
    Abstract: A polymer-carbon nanomaterial composite. The composite includes a polymer matrix; and plasma-modified carbon nanomaterials having surface functional groups attached thereto, wherein the carbon nanomaterial is selected from carbon nanotubes, carbon nanofibers, carbon nanoparticles, carbon black, nanodiamond, fullerenes, or combinations thereof. The invention also involves a method of making a polymer-carbon nanomaterial composite, and a method of modifying carbon nanomaterials.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Liming Dai, Wei Chen, Zheng Rong Xu, Frank Espinosa
  • Publication number: 20080290020
    Abstract: Nano-composite membranes and methods for making them are described. The nano-composite membranes a made from a layer of oriented carbon nanotubes fixed in a polymeric matrix. Methods for efficient, facile, and inexpensive fabrication of the nano-composite membranes using a filtration method are also described. The carbon nanotubes may also be modified with chemical functional groups to promote their orientation in the carbon nanotube layer or to confer to them other properties.
    Type: Application
    Filed: August 30, 2007
    Publication date: November 27, 2008
    Inventors: Eva MARAND, Sangil KIM
  • Patent number: 7449133
    Abstract: A transparent and conductive film comprising at least one network of graphene flakes is described herein. This film may further comprise an interpenetrating network of other nanostructures, a polymer and/or a functionalization agent(s).
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: November 11, 2008
    Assignee: Unidym, Inc.
    Inventors: George Gruner, Liangbing Hu, David Hecht
  • Patent number: 7419624
    Abstract: This invention relates generally to a method for producing composites of fullerene nanotubes and compositions thereof. In one embodiment, the present invention involves a method of producing a composite material that includes a matrix and a fullerene nanotube material embedded within said matrix. In another embodiment, a method of producing a composite material containing fullerene nanotube material is disclosed. This method includes the steps of preparing an assembly of a fibrous material; adding the fullerene nanotube material to the fibrous material; and adding a matrix material precursor to the fullerene nanotube material and the fibrous material.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: September 2, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7411019
    Abstract: The present invention relates to polymer composite materials containing carbon nanotubes, particularly to those containing singled-walled nanotubes. The invention provides a polymer composite comprising one or more base polymers, one or more functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers and carbon nanotubes. The invention also relates to functionalized m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers, particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having side chain functionalization, and more particularly to m-phenylenevinylene-2,5-disubstituted-p-phenylenevinylene polymers having olefin side chains and alkyl epoxy side chains. The invention further relates to methods of making polymer composites comprising carbon nanotubes.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: August 12, 2008
    Assignee: Eltron Research, Inc.
    Inventor: Richard A. Bley
  • Patent number: 7374807
    Abstract: The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: May 20, 2008
    Assignee: Nanosys, Inc.
    Inventors: J. Wallace Parce, Jian Chen, Bob Dubrow, Bill Freeman, Erik C. Scher, Jeffery A. Whiteford
  • Patent number: 7357984
    Abstract: By coating the outer surface of carbon nanotubes with various polymers of different properties, such properties as insulation property, reactivity, optical visibility, solvent dispersion property and so on are given to the outer surface of the carbon nanotubes.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: April 15, 2008
    Assignees: Incorporated Administrative Agency National Agriculture and Bio-Oriented Research Organization, NEC Corporation
    Inventors: Kazunori Otobe, Hidenobu Nakao, Hideki Hayashi, Fumiyuki Nihey
  • Patent number: 7338705
    Abstract: An optically transparent conductive material is disposed directly or indirectly on an inside surface of a cover material for static dissipation in an optical switching device. The optically transparent conductive material forms an electrically continuous film. The optically transparent conductive material can also be used for anti-reflection. An additional coating may be disposed directly or indirectly on an outside surface of the cover material.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: March 4, 2008
    Assignee: Analog Devices, Inc.
    Inventors: John R. Martin, Maurice Karpman, Lawrence E. Felton
  • Patent number: 7326633
    Abstract: An anisotropic conductive film (10) is used for bonding a semiconductor component to a circuit board. The anisotropic conductive film includes an insulative adhesive film (12) and a plurality of nano-scaled conductive particles (14). The nano-scaled conductive particles are dispersed in the insulative adhesive film. The nano-scaled conductive particles are a nanotubes each containing metal particles and polyaniline therein. Because the sizes of the nano-scaled conductive particle are very small, more of the nano-scaled conductive particles can be compressed between two corresponding contacts of the semiconductor component and the circuit board. The interface area between the two corresponding contacts is correspondingly enlarged. In addition, the polyaniline both in the opening and inside of the nanotubes also has a more favorable viscosity. The bonding effect between a semiconductor component and a circuit board is improved.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: February 5, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Ga-Lane Chen
  • Patent number: 7262266
    Abstract: The present invention is generally directed to the block copolymerization of rigid rod polymers with carbon nanotubes (CNTs), the CNTs generally being shortened, to form nanotube block copolymers. The present invention is also directed to fibers and other shaped articles made from the nanotube block copolymers of the present invention.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: August 28, 2007
    Assignee: William Marsh Rice University
    Inventors: Wen-Fang Hwang, Richard E. Smalley, Robert H. Hauge
  • Patent number: 7202173
    Abstract: Systems and methods may provide electrical contacts to an array of substantially vertically aligned nanorods. The nanorod array may be fabricated on top of a conducting layer that serves as a bottom contact to the nanorods. A top metal contact may be applied to a plurality of nanorods of the nanorod array. The contacts may allow I/V (current/voltage) characteristics of the nanorods to be measured.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: April 10, 2007
    Assignee: Palo Alto Research Corporation Incorporated
    Inventors: Thomas Hantschel, Noble M. Johnson, Peter Kiesel, Christian G. Van De Walle, William S. Wong