Modified With Atoms Or Molecules Bonded To The Surface Patents (Class 977/748)
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Publication number: 20110069274Abstract: A vision assistance device includes a lens based on a transparent material, a conductive transparent thin film contacting the lens and containing carbon nanotubes, electrodes electrically connected to the conductive transparent thin film, and a portable power supply electrically connected to the electrodes. The vision assistance device prevents fogging and retains heat.Type: ApplicationFiled: May 21, 2009Publication date: March 24, 2011Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Chang-Soo Han, Jin-Won Song, Joon-Dong Kim
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Publication number: 20110031443Abstract: A multicomponent carbon nanotube-polymer complex, a composition for forming the same, and a preparation method thereof are disclosed herein. A multicomponent carbon nanotube-polymer complex may include carbon nanotubes surface-modified with double bond-containing functional groups or carbon nanotubes surface-modified with oxirane groups and/or carbon nanotubes surface-modified with anhydride groups; a polymer binder; and/or acid-treated carbon nanotubes and/or pristine carbon nanotubes. The multicomponent carbon nanotube-polymer complex may exhibit remarkably improved mechanical and hardening properties, compared with conventional complexes using only carbon nanotubes and a polymer binder, and thus may be advantageously used as an electromagnetic wave shielding material and a conductive material.Type: ApplicationFiled: October 14, 2010Publication date: February 10, 2011Inventors: Jong Jin Park, Byeongyeol Kim, Dong Woo Shin, Young Ju Kim
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Patent number: 7883650Abstract: A composite bipolar plate for a polymer electrolyte membrane fuel cell (PEMFC) is prepared as follows: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein carbon nanotubes together with a polyether amine dispersant or modified carbon nanotubes 0.05-10 wt %, based on the weight of the vinyl ester resin, are added during the compounding; b) molding the BMC material from step a) to form a bipolar plates having a desired shaped at 80-200° C. and 500-4000 psi.Type: GrantFiled: October 20, 2008Date of Patent: February 8, 2011Assignee: National Tsing Hua UniversityInventors: Chen-Chi Martin Ma, Chih-Hung Hung, Shu-Hang Liao, Chuan-Yu Yen, Jeng-Chih Weng, Yu-Feng Lin
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Publication number: 20110027162Abstract: Systems and methods for the formation of carbon-based nanostructures are generally described. In some embodiments, the nanostructures may be formed on a nanopositor. The nanopositor can comprise, in some embodiments, at least one of metal atoms in a non-zero oxidation state and metalloid atoms in a non-zero oxidation state. For example, the nanopositor may comprise a metal oxide, a metalloid oxide, a metal chalcogenide, a metalloid chalcogenide, and the like. The carbon-based nanostructures may be grown by exposing the nanopositor, in the presence or absence of a growth substrate, to a set of conditions selected to cause formation of carbon-based nanostructures on the nanopositor. In some embodiments, metal or metalloid atoms in a non-zero oxidation state are not reduced to a zero oxidation state during the formation of the carbon-based nanostructures. In some cases, metal or metalloid atoms in a non-zero oxidation state do not form a carbide during the formation of the carbon-based nanostructures.Type: ApplicationFiled: July 30, 2010Publication date: February 3, 2011Applicant: Massachusetts Institute of TechnologyInventors: Stephen A. Steiner, III, Brian L. Wardle
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Publication number: 20110003149Abstract: The invention provides fluorinated multi-layered carbon nanomaterials and methods for their production. In one aspect of the invention, the carbon nanomaterials are partially fluorinated and retain some unreacted carbon. The invention also provides electrodes and electrochemical devices incorporating the fluorinated carbon nanomaterials of the invention.Type: ApplicationFiled: September 13, 2010Publication date: January 6, 2011Inventors: Rachid YAZAMI, André Hamwi
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Patent number: 7858648Abstract: The present invention relates to the use of a carbon nanotube comprising positive and/or negative charges, the charges being carried by at least one charge-carrying group, the charge carrying group being covalently bound to the surface of the carbon nanotube, for the manufacture of a complex between the carbon nanotube and at least one charged molecule, the bond between the carbon nanotube and the charged molecule being essentially electrostatic, and the charged molecule comprising at least one negative charge if the carbon nanotube comprises positive charges and/or at least one positive charge if the carbon nanotube comprises negative charges.Type: GrantFiled: June 6, 2005Date of Patent: December 28, 2010Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), University of London, The School of Pharmacy, Universita degli Studi di TriesteInventors: Alberto Bianco, Davide Pantarotto, Kostas Kostarelos, Maurizio Prato
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Patent number: 7854914Abstract: The present invention relates to a method of solubilizing carbon nanotubes, to carbon nanotubes produced thereby and to uses of said carbon nanotubes.Type: GrantFiled: March 13, 2009Date of Patent: December 21, 2010Assignee: Sony Deutschland GmbHInventors: William E. Ford, Jurina Wessels, Akio Yasuda
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Publication number: 20100316554Abstract: The combination of at least one substantially unfunctionalised carbon surface, such as a fullerene, graphite or amorphous carbon, graphene or pre-aligned carbon nanotubes and at least semi-conducting nanoparticle, for example CdSe, CdTe, CdS, InP and/or ZnO or a metallic alloy nanoparticle is described wherein the at least one nanoparticle is directly attached to the substantially unfunctionalised carbon surface. A method for the manufacture of the nanoparticles is also described. This method comprises: —dissolving a cation source in a first organic solvent to produce a cation-containing medium; —adding a plurality of substantially unfunctionalised carbon surfaces to the cation-containing medium to form a cation-carbon mixture; —adding an anion-containing medium to the mixture of the cation-containing medium and carbon surfaces to form a cation-carbon-anion mixture, In the case of alloy nanoparticles, another cation medium is added instead.Type: ApplicationFiled: March 28, 2008Publication date: December 16, 2010Applicant: CENTRUM FUR ANGEWANDTE NANOTECHNOLOGIE (CAN) GMBHInventors: Beatriz Hernandez, Horst Weller, Christian Klinke, Mona Nagel, Andreas Kornowski
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Patent number: 7851338Abstract: Graded core/shell semiconductor nanorods and shaped nanorods are disclosed comprising Group II-VI, Group III-V and Group IV semiconductors and methods of making the same. Also disclosed are nanorod barcodes using core/shell nanorods where the core is a semiconductor or metal material, and with or without a shell. Methods of labeling analytes using the nanorod barcodes are also disclosed.Type: GrantFiled: February 12, 2008Date of Patent: December 14, 2010Assignee: The Regents of the University of CaliforniaInventors: A. Paul Alivisatos, Erik C. Scher, Liberato Manna
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Patent number: 7850874Abstract: Methods and devices are provided relating to the homogeneous deposition of a composite film of carbon nanotubes by electrophoresis. The methods comprise linking carbon nanotubes to matrix particles prior to electrophoretic deposition. The methods improve the adhesion of the composite film to the substrate and reduce the surface roughness. Carbon nanotube films and electron field emission cathodes fabricated by this process demonstrate enhanced electron field emission characteristics.Type: GrantFiled: September 20, 2007Date of Patent: December 14, 2010Assignee: Xintek, Inc.Inventors: Mei Lu, Jie Liu, Huaizhi Geng, Bo Gao
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Publication number: 20100285304Abstract: Exemplary embodiments provide a coating composition for an outermost layer of a fuser member that can include a plurality of fluorinated diamond-containing particles dispersed in an elastomeric matrix.Type: ApplicationFiled: May 6, 2009Publication date: November 11, 2010Applicant: XEROX CORPORATIONInventor: Jin WU
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Publication number: 20100279001Abstract: Disclosed are a carbon nano-tube (CNT) thin film treated with chemical having an electron withdrawing functional group and a manufacturing method thereof. Specifically, the CNT thin film comprises a CNT composition to be applied on a plastic substrate. The CNT composition comprises a CNT; and chemical connected to the CNT and having an electron withdrawing functional group. In addition, the method for manufacturing a CNT thin film comprises steps of preparing a CNT; treating the CNT with chemical having an electron withdrawing functional group; mixing the CNT treated with the chemical with a dispersing agent or dispersing solvent to prepare a CNT dispersed solution; and forming a CNT thin film with the CNT dispersed solution. According to the CNT thin film and the manufacturing method thereof, a resistance of an electrode is decreased to improve the electric conductivity of the electrode.Type: ApplicationFiled: February 14, 2008Publication date: November 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyeon Jin Shin, Seonmi Yoon, Jaeyoung Choi, Young Hee Lee, Seong Jae Choi, Soo Min Kim
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Patent number: 7818993Abstract: Single-walled carbon nanotubes (SWNTs) are decorated with metal nanoparticles to form high-performance flexible hydrogen sensors. The special process to form the high-performance flexible hydrogen sensors can combine a dry transfer printing technique and modification of SWNTs with palladium (Pd) nanoparticles to provide high-performance hydrogen sensors with excellent mechanical flexibility on plastic substrates. Two approaches can be used to decorate the SWNTs. One is physical deposition, such as electron beam evaporation (EBE) and the other is electrochemical deposition which can selectively grow palladium nanoparticles on the surface of the SWNTs, resulting in significantly decreasing the use of palladium. Preferably, the Pd nanoparticles are deposed on the SWNTs in a discontinuous arrangement so that the Pd nanoparticles are spaced away from each other to form individual discontinuous Pd nanoparticles rather a continuous Pd film.Type: GrantFiled: September 27, 2007Date of Patent: October 26, 2010Assignee: UChicago Argonne, LLCInventors: Yugang Sun, Hsien-Hau Wang
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Publication number: 20100256307Abstract: Novel multiblock polymers are prepared and used to disperse carbon nanotubes in solution.Type: ApplicationFiled: December 6, 2007Publication date: October 7, 2010Inventors: Bruce A. Diner, Lech Wilczek
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Publication number: 20100255185Abstract: The invention relates to a method for the production of an electrically conductive polycarbonate composite on the basis of thermoplastic polycarbonate and carbon nanotubes, wherein acid-functionalized carbon nanotubes are dispersed with molten polycarbonate.Type: ApplicationFiled: November 25, 2008Publication date: October 7, 2010Applicant: Bayer MaterialScience AGInventors: Stefan Bahnmueller, Andreas Greiner, Markus Schackmann
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Patent number: 7807127Abstract: The present invention relates to a carbon nanotube that contains nitrogen based functional groups (such as nitro, nitroso, N-oxide, oxime, hydroxylamine, diazo, azo, and azide) that are covalently attached to lattice carbons of the carbon nanotube, directly or via a chemical linker. The present invention also relates to methods for the preparation of the carbon nanotube from an amino-functionalized carbon nanotube via an amino oxidation reaction. The synthetic methods of the present invention allow the nitrogen based functional groups to be attached selectively to one of two distinct regions of the carbon nanotube, the ends or the sidewall, and thus enable the synthesis of a carbon nanotube having nitrogen based functional groups substantially concentrated on either the ends or the sidewall of the carbon nanotube.Type: GrantFiled: April 14, 2006Date of Patent: October 5, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Farhad Forohar, Craig Whitaker, William M. Koppes
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Patent number: 7799726Abstract: A composite comprising a support activated by impregnation and carbon nanotubes or nanofibers formed by vapor deposition, wherein the weight of said carbon nanotubes or nanofibers formed on the said support is at least equal to 10.Type: GrantFiled: November 20, 2002Date of Patent: September 21, 2010Assignees: Sicat, Centre National de la Recherche; Scientifique, Universite de StrasbourgInventors: Cuong Pham-Huu, Ricardo Vieira, Marc J. Ledoux, Loïc Charbonniere, Raymond Ziessel
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Patent number: 7794683Abstract: The present invention relates to methods for the preparation of a carbon nanotube from an amino-functionalized carbon nanotube via an amino oxidation reaction. The carbon nanotube includes nitrogen based functional groups that are covalently attached to lattice carbons of the carbon nanotube, directly or via a chemical linker. The synthetic methods of the present invention allow the nitrogen based functional groups to be attached selectively to one of two distinct regions of the carbon nanotube, and thus enable the synthesis of a carbon nanotube having nitrogen based functional groups substantially concentrated on the ends and/or the sidewall of the carbon nanotube.Type: GrantFiled: April 14, 2006Date of Patent: September 14, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Farhad Forohar, Craig Whitaker, William M. Koppes
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Publication number: 20100226847Abstract: The present invention is a method comprising a direct chirality-selective nucleation and synthesis of single-walled carbon nanotubes from carbon-containing gases using catalytic nanoparticles of uniform size heated by ultra-short laser pulses of selected frequency to temperatures sufficient for carbon nanotube nucleation and synthesis.Type: ApplicationFiled: March 5, 2009Publication date: September 9, 2010Applicant: CFD RESEARCH CORPORATIONInventor: Aleksey V. Vasenkov
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Patent number: 7790650Abstract: The present invention relates to catalysts comprising at least one support and at least one layer applied to said support, said layer containing a) 20 to 95% by weight of at least one aluminum, silicon, titanium or magnesium oxide compound or a silicon carbide or a carbon support or mixtures thereof, and b) 5 to 50% by weight of at least one nanocarbon. The catalysts can be used to produce unsaturated hydrocarbons by means of the oxidative dehydrogenation of alkylaromatics, alkenes and alkanes in the gas phase.Type: GrantFiled: July 13, 2005Date of Patent: September 7, 2010Assignee: NanoC Sdn. Bhd.Inventors: Robert Schlogl, Gerhard Mestl
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Publication number: 20100219393Abstract: Carbon nanotube template arrays may be edited to form connections between proximate nanotubes and/or to delete undesired nanotubes or nanotube junctions.Type: ApplicationFiled: February 10, 2010Publication date: September 2, 2010Inventors: Roderick A. Hyde, Muriel Y. Ishikawa, Nathan P. Myhrvold, Clarence T. Tegreene, Charles Whitmer, Lowell L. Wood, JR.
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Patent number: 7785998Abstract: Some embodiments include methods of forming dispersions of nanoparticles. The nanoparticles are incorporated into first coordination complexes in which the nanoparticles are coordinated to hydrophobic ligands, and the first coordination complexes are dispersed within a non-polar solvent. While the first coordination complexes are within the non-polar solvent, the ligands are reacted with one or more reactants to convert the first coordination complexes into second coordination complexes that contain hydrophilic ligands. The second coordination complexes are then extracted from the non-polar solvent into water, to form a mixture of the second coordination complexes and the water. In some embodiments, the mixture may be dispersed across a semiconductor substrate to form a uniform distribution of the nanoparticles across the substrate. In some embodiments, the nanoparticles may then be incorporated into flash memory devices as charge-trapping centers.Type: GrantFiled: February 21, 2008Date of Patent: August 31, 2010Assignee: Micron Technology, Inc.Inventor: Dan Millward
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Patent number: 7785472Abstract: A method of separating, concentrating or purifying uniform carbon nanotubes with desired properties (diameter, chiral vector, etc) in a highly sensitive manner by the use of structure-sensitive properties peculiar to carbon nanotubes; and an apparatus therefor. There is provided a method of separating, concentrating, or purifying carbon nanotubes with the desired properties contained in a sample, comprising the steps of (a) irradiating a sample containing carbon nanotubes with light; and (b) selecting carbon nanotubes with desired properties. In a preferred embodiment, the light irradiation of the step (a) can be carried out in the presence of a metal so as to cause specified carbon nanotubes to selectively induce a photocatalytic reaction, resulting in metal deposition. Further, in a preferred embodiment, a given magnetic filed can be applied in the steps (b) so as to attain accumulation or concentration or carbon nanotubes with metal deposited.Type: GrantFiled: February 10, 2005Date of Patent: August 31, 2010Assignee: Japan Science and Technology AgencyInventor: Kei Murakoshi
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Patent number: 7767615Abstract: A method for producing aligned carbon nanotubes and/or nanofibres comprises providing finely divided substrate particle having substantially smooth faces with radii of curvature of more than 1 ?m and of length and breadth between 1 ?m and 5 mm and having catalyst material on their surface and a carbon-containing gas at a temperature and pressure at which the carbon-containing gas will react to form carbon when in the presence of the supported catalyst, and forming aligned nanotubes and/or nanofibres by the carbon-forming reaction.Type: GrantFiled: November 13, 2003Date of Patent: August 3, 2010Assignee: Cambridge University Technical Services LimitedInventors: Ian Kinloch, Charanjeet Singh, Milo Sebastian Peter Shaffer, Krzysztof K. K. Koziol, Alan Windle
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Patent number: 7767616Abstract: A catalyst for an electro-chemical oxygen reduction reaction (ORR) of a bundle of longitudinally aligned carbon nanotubes having a catalytically active transition metal incorporated longitudinally in said nanotubes. A method of making an electro-chemical catalyst for an oxygen reduction reaction (ORR) having a bundle of longitudinally aligned carbon nanotubes with a catalytically active transition metal incorporated throughout the nanotubes, where a substrate is in a first reaction zone, and a combination selected from one or more of a hydrocarbon and an organometallic compound containing an catalytically active transition metal and a nitrogen containing compound and an inert gas and a reducing gas is introduced into the first reaction zone which is maintained at a first reaction temperature for a time sufficient to vaporize material therein.Type: GrantFiled: March 3, 2006Date of Patent: August 3, 2010Assignee: UChicago Argonne, LLCInventors: Di-Jia Liu, Junbing Yang, Xiaoping Wang
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Patent number: 7767114Abstract: In a method for functionalizing a carbon nanotube surface, the nanotube surface is exposed to at least one vapor including at least one functionalization species that non-covalently bonds to the nanotube surface, providing chemically functional groups at the nanotube surface, producing a functionalized nanotube surface. A functionalized nanotube surface can be exposed to at least one vapor stabilization species that reacts with the functionalization layer to form a stabilization layer that stabilizes the functionalization layer against desorption from the nanotube surface while providing chemically functional groups at the nanotube surface, producing a stabilized nanotube surface. The stabilized nanotube surface can be exposed to at least one material layer precursor species that deposits a material layer on the stabilized nanotube surface.Type: GrantFiled: February 7, 2007Date of Patent: August 3, 2010Assignee: President and Fellows of Harvard CollegeInventors: Roy G. Gordon, Damon B. Farmer
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Patent number: 7745330Abstract: Carbon nanotube apparatus, and methods of carbon nanotube modification, include carbon nanotubes having locally modified properties with the positioning of the modifications being controlled. More specifically, the positioning of nanotubes on a substrate with a deposited substance, and partially vaporizing part of the deposited substance etches the nanotubes. The modifications of the carbon nanotubes determine the electrical properties of the apparatus and applications such as a transistor or Shockley diode. Other applications of the above mentioned apparatus include a nanolaboratory that assists in study of merged quantum states between nanosystems and a macroscopic host system.Type: GrantFiled: July 31, 2007Date of Patent: June 29, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Francisco Santiago, Victor H. Gehman, Jr., Karen J. Long, Kevin A. Boulais
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Publication number: 20100159126Abstract: Aqueous emulsion comprising: (i) at least one functionalized polyolefin (gPO), obtained by grafting, on at least one unfunctionalized polyolefin (PO), acid and/or anhydride groups, the acid and/or anhydride groups being optionally completely or partially neutralized by at least one neutralizing agent; (ii) at least one emulsifier; (iii) at least one dispersant containing water; and (iv) carbon nanotubes.Type: ApplicationFiled: April 5, 2007Publication date: June 24, 2010Applicant: SOLVAY (SOCIETE ANONYME)Inventor: Henri Wautier
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Patent number: 7740826Abstract: A method for functionalizing the wall of single-wall or multi-wall carbon nanotubes involves the use of acyl peroxides to generate carbon-centered free radicals. The method allows for the chemical attachment of a variety of functional groups to the wall or end cap of carbon nanotubes through covalent carbon bonds without destroying the wall or endcap structure of the nanotube. Carbon-centered radicals generated from acyl peroxides can have terminal functional groups that provide sites for further reaction with other compounds. Organic groups with terminal carboxylic acid functionality can be converted to an acyl chloride and further reacted with an amine to form an amide or with a diamine to form an amide with terminal amine. The reactive functional groups attached to the nanotubes provide improved solvent dispersibility and provide reaction sites for monomers for incorporation in polymer structures. The nanotubes can also be functionalized by generating free radicals from organic sulfoxides.Type: GrantFiled: October 24, 2006Date of Patent: June 22, 2010Assignee: William Marsh Rice UniversityInventors: Valery N. Khabashesku, Haiqing Peng, John L. Margrave, Mary Lou Margrave, legal representative, Wilbur Edward Billups, Yunming Ying
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Publication number: 20100140097Abstract: A method comprising: dispersing carbon nanotubes in a solvent; and depositing the carbon nanotubes on a porous, conductive substrate; wherein the porous, conductive substrate is capable of functioning as a filter and a working electrode. The method of claim 1 further comprising: engaging the porous, conductive substrate with deposited carbon nanotubes in an electrochemical cell; and depositing at least one metallic structure on the surface of the carbon nanotubes from an electrolyte solution to form metallized carbon nanotubes. A composite comprising: metallized carbon nanotubes generated by the method of claim 2; wherein the at least one metallic structure comprises a conductive metal atom selected from the group consisting of platinum, gold nickel, copper, iron, chromium, zinc, and combinations thereof; and a matrix material selected from the group consisting of epoxies, thermosets, thermoplastics, elastomers, metals, metal matrix composites, ceramics and combinations thereof.Type: ApplicationFiled: December 26, 2007Publication date: June 10, 2010Applicant: Texas Southern UniversityInventors: Xin Wei, Yuanjian Deng, Renard L. Thomas, Bobby Wilson
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Patent number: 7727505Abstract: A method for separating carbon nanotubes comprises: providing a mixture of carbon nanotubes; introducing an organic molecule having an end group capable of being chelated by a metal ion to the mixture of carbon nanotubes to covalently bond the organic molecule to at least one of the mixture of carbon nanotubes; and introducing a metal salt to the mixture of carbon nanotubes to chelate the end group of the organic molecule with the metal ion of the metal salt; and centrifuging the mixture of carbon nanotubes to cause the separation of the carbon nanotubes based on a density differential of the carbon nanotubes.Type: GrantFiled: May 21, 2008Date of Patent: June 1, 2010Assignee: International Business Machines CorporationInventors: Ali Afazali-Ardakani, James B. Hannon, Cherie R. Kagan, George S. Tulevski
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Publication number: 20100119422Abstract: A carbon nanotube filter. The filter including a filter housing; and chemically active carbon nanotubes within the filter housing, the chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of the carbon nanotubes; and media containing the chemically active carbon nanotubes.Type: ApplicationFiled: January 6, 2010Publication date: May 13, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Steven J. Holmes, Mark C. Hakey, David V. Horak, James G. Ryan
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Patent number: 7709243Abstract: The present invention is related to a biochip and a biomolecular detection system using the same. In particular, the biomolecular detection system is capable of detecting biological molecules (biomolecules) such as DNA or protein at a high speed. The biochip comprises a supporting structure, conductive materials aligned vertically on, and associated with, the supporting structure, and biomolecule probes operably linked to the conductive materials. The biomolecular detection system using the biochip may precisely detect biomolecules as well as the density of the biomolecules.Type: GrantFiled: February 14, 2005Date of Patent: May 4, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Young-jun Park, Jong-min Kim, Sung-kee Kang, Jung-woo Kim
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Patent number: 7708816Abstract: A carbon nanotube filter. The filter including a filter housing; and chemically active carbon nanotubes within the filter housing, the chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of the carbon nanotubes; and media containing the chemically active carbon nanotubes.Type: GrantFiled: July 7, 2008Date of Patent: May 4, 2010Assignee: International Business Machines CorporationInventors: Steven J. Holmes, Mark C. Hakey, David V. Horak, James G. Ryan
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Patent number: 7696512Abstract: The electron device of the present invention has a carbon-based linear structural body including at least one conductive particle, a first electrode and a second electrode disposed at both end of the carbon-based linear structural body, so as to subject the carbon-based linear structural body including at least one conductive particle to connect between the first electrode and the second electrode. A process of manufacturing the electron device includes steps of: forming a carbon-based linear structural body including at least one conductive particle, using a catalyst of a first island and a second island selected from two or more of islands of the catalyst on a substrate; and forming a first electrode and a second electrode so as to connect the first electrode with the first island and one end of the carbon-based linear structural body, and the second electrode with the second island and the other end of the carbon-based linear structural body.Type: GrantFiled: May 19, 2003Date of Patent: April 13, 2010Assignees: Fujitsu Limited, National Institute of Advanced Industrial Science and TechnologyInventors: Yuji Awano, Kazuhiko Matsumoto
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Patent number: 7695993Abstract: A method can be adapted for design and preparation of a matrix nanocomposite sensing film for hydrogen sulphide SAW/BAW detection at room temperature. A matrix nanocomposite can be synthesized by incorporating both single-wall and multi-wall thiolated carbon nanotubes into conductive organic polymers or ceramic nanocrystalline in a properly functionalized manner. A thin organic sensing film can be prepared based on the matrix nanocomposite. The matrix nanocomposite sensing film can be prepared on a surface of a SAW/BAW device by an additive process or a direct printing process. Finally, the sensing film can be consolidated by thermal annealing or laser annealing under ambient conditions in order to obtain the stable sensing film with higher sensitivity and electrical properties for a SAW/BAW based H2S sensor.Type: GrantFiled: May 7, 2008Date of Patent: April 13, 2010Assignee: Honeywell International Inc.Inventors: Bogdan-Catalin Serban, Stefan I. Voicu, Stefan-Dan Costea, Cornel P. Cobianu
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Publication number: 20100086787Abstract: Exemplary embodiments provide coating compositions having pseudo-fluorine surface and methods for processing and using the coating compositions. The coating composition can include, for example, a plurality of fluorine-containing resin fillers and a plurality of nanotubes (e.g., carbon nanotubes (CNTs)) dispersed in a polymer matrix that contains, e.g., one or more cross-linked polymers. The fluorine-containing resin fillers can provide a pseudo-fluorine surface for a low surface energy of the coating composition. The nanotubes can be dispersed in the polymer matrix to provide an improved mechanical robustness of the coating composition. The coating composition can be coated on a member surface, wherein the coated member can be, for example, a fuser member, a fixing member, a pressure roller, or a release agent donor member, used in an electrostatographic printing device or process.Type: ApplicationFiled: October 6, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Yu QI, Nan-Xing Hu, Qi Zhang, Gordon Sisler, Brian McAneney
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Publication number: 20100069604Abstract: Epoxy resins are chemically attached to carbon nanotubes (CNTs), in a one-step process in which a reaction mixture comprising the epoxy polymer, the CNTs and a bridging agent which is a chemical compound capable of forming living polymers, e.g. styrene or MMA is formed and radical formation is initiated in the reaction mixture; the epoxy polymer or monomer grafts onto the CNTs through the intermediary block of the bridging agent.Type: ApplicationFiled: February 28, 2008Publication date: March 18, 2010Applicant: NATIONAL RESEARCH COUNCIL OF CANADAInventors: Benoit Simard, Jingwen Guan, Stephane Dénommée
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Patent number: 7678707Abstract: Carbon nanotube apparatus, and methods of carbon nanotube modification, include carbon nanotubes having locally modified properties with the positioning of the modifications being controlled. More specifically, the positioning of nanotubes on a substrate with a deposited substance, and partially vaporizing part of the deposited substance etches the nanotubes. The modifications of the carbon nanotubes determine the electrical properties of the apparatus and applications such as a transistor or Shockley diode. Other applications of the above mentioned apparatus include a nanolaboratory that assists in study of merged quantum states between nanosystems and a macroscopic host system.Type: GrantFiled: July 31, 2007Date of Patent: March 16, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Francisco Santiago, Victor H. Gehman, Jr., Karen J. Long, Kevin A. Boulais
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Patent number: 7674324Abstract: An exposure system for exposing a photoresist layer on a top surface of a wafer to light. The exposure system including: an environment chamber containing a light source, one or more focusing lenses, a mask holder, a slit and a wafer stage, the light source, all aligned to an optical axis, the wafer stage moveable in two different orthogonal directions orthogonal to the optical axis, the mask holder and the slit moveable in one of the two orthogonal directions; a filter in a sidewall of the environment chamber, the filter including: a filter housing containing chemically active carbon nanotubes, the chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of the carbon nanotubes; and means for forcing air or inert gas first through the filter then into the environment chamber and then out of the environment chamber.Type: GrantFiled: July 7, 2008Date of Patent: March 9, 2010Assignee: International Business Machines CorporationInventors: Steven J. Holmes, Mark C. Hakey, David V. Horak, James G. Ryan
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Patent number: 7670510Abstract: The invention provides an adduct comprising a carbon nanotube and a transitional metal coordination complex, wherein the metal of the complex is attached by a covalent linkage to at least one oxygen moiety on the nanotube.Type: GrantFiled: July 12, 2006Date of Patent: March 2, 2010Assignee: The Research Foundation of State University of New YorkInventors: Stanislaus S. Wong, Sarbajit Banerjee
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Patent number: 7670831Abstract: Conductive carbon nanotubes (CNTs) obtained by dotting carboxylated CNTs with metal nanocrystals by chemical functional groups, are described, as well as a method for fabricating a pattern or film of the conductive CNTs which involves repeatedly depositing conductive CNTs on a substrate to achieve high surface density. A biosensor is described, in which bioreceptors that bind to target biomolecules are selectively attached to conductive CNTs or a conductive CNT pattern or film. By use of the conductive biosensor, various target biomaterials that bind or react with the bioreceptors can be precisely measured directly or by electrochemical signals at large amounts in one step. Additionally, the biosensor can be used for an electrical detection method capable of providing precise measurement results even with a small amount of source material.Type: GrantFiled: June 3, 2004Date of Patent: March 2, 2010Assignee: Korea Advanced Institute of Science and TechnologyInventors: Sang Yup Lee, Hee Tae Jung, Dae Hwan Jung, Young Koan Ko, Do Hyun Kim, Seok Jae Lee, Byung Hun Kim, Jae Shin Lee
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Publication number: 20100029986Abstract: Methods of forming a multi walled or single walled carbon nanotube with one or more amine groups on the surface thereof are described. The method includes reacting a carbon nanotube having a hydroxyl surface group or a carboxyl surface group with ammonia in the presence of a catalyst at a temperature of about 300° C. or more.Type: ApplicationFiled: October 20, 2008Publication date: February 4, 2010Inventor: David Abecassis
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Publication number: 20090309456Abstract: A generator includes a first conductive layer, a plurality of elongated piezoelectric nanostructures and a conductive electrode. The piezoelectric nanostructures extend upwardly from the first conductive layer and include a carbon nanotube core and a piezoelectric sheath enveloping at least a portion of the carbon nanotube core. Each piezoelectric nanostructure includes a first end disposed adjacent to the first conductive layer and an opposite second end. The conductive electrode is disposed adjacent to the second end of each of the piezoelectric nanostructures. The conductive electrode is configured so that a Schottky barrier is formed between the second end of at least one of the piezoelectric nanostructures and the conductive electrode when a force is applied to the generator that causes the conductive electrode to touch the piezoelectric nanostructures and to induce stress in the piezoelectric nanostructures.Type: ApplicationFiled: March 17, 2009Publication date: December 17, 2009Applicant: GEORGIA TECH RESEARCH CORPORATIONInventor: David W. Stollberg
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Patent number: 7632481Abstract: The present invention is directed to methods of forming sidewall-functionalized carbon nanotubes, wherein such functionalized carbon nanotubes have hydroxyl-terminated moieties covalently attached to their sidewalls. Generally, such methods involve chemistry on carbon nanotubes that have first been fluorinated. In some embodiments, fluorinated carbon nanotubes (“fluoronanotubes”) are reacted with mono-metal salts of a dialcohol, MO—R—OH, where M is a metal and R is hydrocarbon or other organic chain and/or ring structural unit. In such embodiments, —O—R—OH displaces —F on the nanotube, the fluorine leaving as MF. Generally, such mono-metal salts are formed in situ by the addition of MOH to one or more dialcohols in which the fluoronanotubes have been dispersed. In some embodiments, fluoronanotubes are reacted with amino alcohols, such as being of the type H2N—R—OH, wherein —N(H)—R—OH displaces —F on the nanotube, the fluorine leaving as HF.Type: GrantFiled: June 16, 2004Date of Patent: December 15, 2009Assignee: William Marsh Rice UniversityInventors: Valery N. Khabashesku, Lei Zhang, John L. Margrave, Mary Lou Margrave, legal representative
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Publication number: 20090269267Abstract: The present invention relates to a continuous method and apparatus for functionalizing a carbon nanotube, and more specifically, to a continuous method and apparatus for functionalizing a carbon nanotube including preparing a functionalized product by functionalizing a carbon nanotube solution including nitro compound according to the following Chemical Formula 1 and carbon nanotube mixture including an oxidizer for forming nitric acid under subcritical water or supercritical water condition of 50 to 400 atm and a continuous method and apparatus for functionalizing a carbon nanotube under subcritical water or supercritical water condition using nitro compound without using strong acids or strong bases. R—(NOx)y ??[Chemical Formula 1] wherein Chemical Formula 1, R is alkyl group of C1 to C7 or aryl group of C6 to C20 and x and y are integers of 1 to 3 independently.Type: ApplicationFiled: April 21, 2009Publication date: October 29, 2009Inventors: Jin Seo Lee, Joo Hee Han, Seung-Hoe Do, Seong Cheol Hong
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Patent number: 7601421Abstract: 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: GrantFiled: June 16, 2004Date of Patent: October 13, 2009Assignee: William Marsh Rice UniversityInventors: Valery N. Khabashesku, Jiang Zhu, Haiqing Peng, Enrique V. Barrera, John L. Margrave, Mary Lou Margrave, legal representative
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Publication number: 20090226704Abstract: The present invention relates to covalently bonded fullerene-functionalized carbon nanotubes (CBFFCNTs), a method and an apparatus for their production and to their end products. CBFFCNTs are carbon nanotubes with one or more fullerenes or fullerene based molecules covalently bonded to the nanotube surface. They are obtained by bringing one or more catalyst particles, carbon sources and reagents together in a reactor.Type: ApplicationFiled: June 15, 2006Publication date: September 10, 2009Applicant: CANATU OYInventors: Esko I. Kauppinen, Hua Jiang, David P. Brown, Albert G. Nasibulin
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Patent number: 7576027Abstract: Methods for forming compositions including carbide-containing nanorods and/or oxycarbide-containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides. Rigid porous structures including oxycarbide-containing nanorods and/or carbide containing nanorods and/or carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.Type: GrantFiled: December 8, 2006Date of Patent: August 18, 2009Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, David Moy
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Patent number: 7572426Abstract: The present invention is directed toward methods of selectively functionalizing carbon nanotubes of a specific type or range of types, based on their electronic properties, using diazonium chemistry. The present invention is also directed toward methods of separating carbon nanotubes into populations of specific types or range(s) of types via selective functionalization and electrophoresis, and also to the novel compositions generated by such separations.Type: GrantFiled: July 29, 2004Date of Patent: August 11, 2009Assignee: William Marsh Rice UniversityInventors: Michael S. Strano, Monica Usrey, Paul Barone, Christopher A. Dyke, James M. Tour, W. Carter Kittrell, Robert H. Hauge, Richard E. Smalley