Single-walled Patents (Class 977/750)
Cross-Reference Art Collections
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Publication number: 20110212554Abstract: The present invention, in one embodiment, provides a method of forming an organic electric device that includes providing a plurality of carbon nanostructures; and dispersing the plurality of carbon nanostructures in a polymeric matrix to provide a polymeric composite, wherein when the plurality of carbon nanostructures are present at a first concentration an interface of the plurality of carbon nanostructures and the polymeric matrix is characterized by charge transport when an external energy is applied, and when the plurality of carbon nanostructures are present at a second concentration the interface of the plurality of carbon nanostructures and the polymeric matrix are characterized by exciton dissociation when an external energy is applied, wherein the first concentration is less than the second concentration.Type: ApplicationFiled: April 8, 2011Publication date: September 1, 2011Applicants: UT-BATTELLE LLC, UNIVERSITY OF TENNESSEE RESEARCH FOUNDATIONInventors: David Bruce Geohegan, Ilia N. Ivanov, Alexander A. Puretzky, Stephen Jesse, Bin Hu, Matthew Garrett, Bin Zhao
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Publication number: 20110211313Abstract: Under one aspect, a method of cooling a circuit element includes providing a thermal reservoir having a temperature lower than an operating temperature of the circuit element; and providing a nanotube article in thermal contact with the circuit element and with the reservoir, the nanotube article including a non-woven fabric of nanotubes in contact with other nanotubes to define a plurality of thermal pathways along the article, the nanotube article having a nanotube density and a shape selected such that the nanotube article is capable of transferring heat from the circuit element to the thermal reservoir.Type: ApplicationFiled: April 19, 2011Publication date: September 1, 2011Applicant: NANTERO, INC.Inventors: Jonathan W. WARD, Claude L. BERTIN, Brent M. SEGAL
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Publication number: 20110210415Abstract: The present invention introduces a small-size temperature sensor, which exploits a random or oriented network of un-functionalized, single or multi-walled, carbon nanotubes to monitor a wide range of temperatures. Such network is manufactured in the form of freestanding thin film with an electric conductance proven to be a monotonic function of the temperature, above 4.2 K. Said carbon nanotube film is wire-connected to a high precision source-measurement unit, which measures its electric conductance by a standard two or four-probe technique. Said temperature sensor has a low power consumption, an excellent stability and durability, a high sensitivity and a fast response; its manufacturing method is simple and robust and yields low-cost devices. Said temperature sensor, freely scalable in dimension, is suitable for local accurate measurements of rapidly and widely changing temperatures, while introducing a negligible disturb to the measurement environment.Type: ApplicationFiled: August 6, 2009Publication date: September 1, 2011Inventors: Claudia Altavilla, Fabrizio Bobba, Paolo Ciambelli, Annamaria Cucolo, Antonio Di Bartolomeo, Filippo Giubileo, Samanta Piano, Diana Sannino, Maria Sarno, Alessandro Scarfato
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Patent number: 8008102Abstract: The present invention relates to a new light emitters that exploit the use of semiconducting single walled carbon nanotubes (SWNTs). Experimental evidences are given on how it is possible, within the standard silicon technology, to devise light emitting diodes (LEDs) emitting in the infrared IR where light emission results from a radiative recombination of electron and holes on semiconducting single walled carbon nanotubes (SWNTs-LED). We will also show how it is possible to implement these SWNTs-LED in order to build up a laser source based on the emission properties of SWNTs. A description of the manufacturing process of such devices is also given.Type: GrantFiled: December 18, 2007Date of Patent: August 30, 2011Assignee: STMicroelectronics S.r.l.Inventors: Vincenzo Vinciguerra, Francesco Buonocore, Maria Fortuna Bevilacqua, Salvatore Coffa
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Publication number: 20110204020Abstract: Multilayer carbon nanotube capacitors, and methods and printable compositions for manufacturing multilayer carbon nanotubes (CNTs) are disclosed. A first capacitor embodiment comprises: a first conductor; a plurality of fixed CNTs in an ionic liquid, each fixed CNT comprising a magnetic catalyst nanoparticle coupled to a carbon nanotube and further coupled to the first conductor; and a first plurality of free CNTs dispersed and moveable in the ionic liquid. Another capacitor embodiment comprises: a first conductor; a conductive nanomesh coupled to the first conductor; a first plurality of fixed CNTs in an ionic liquid and further coupled to the conductive nanomesh; and a plurality of free CNTs dispersed and moveable in the ionic liquid. Various methods of printing the CNTs and other structures, and methods of aligning and moving the CNTs using applied electric and magnetic fields, are also disclosed.Type: ApplicationFiled: February 10, 2011Publication date: August 25, 2011Applicant: NTHDEGREE TECHNOLOGIES WORLDWIDE INC.Inventors: William Johnstone Ray, Mark David Lowenthal, Neil O. Shotton, Thomas William Clinton, Theodore I. Kamins, Vera Nicholaevna Lockett
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Publication number: 20110204330Abstract: Nanostructures are joined using one or more of a variety of materials and approaches. As consistent with various example embodiments, two or more nanostructures are joined at a junction between the nanostructures. The nanostructures may touch or be nearly touching at the junction, and a joining material is deposited and nucleates at the junction to couple the nanostructures together. In various applications, the nucleated joining material facilitates conductivity (thermal and/or electric) between the nanostructures. In some embodiments, the joining material further enhances conductivity of the nanostructures themselves, such as by growing along the nanostructures and/or doping the nanostructures.Type: ApplicationFiled: January 21, 2011Publication date: August 25, 2011Inventors: Melburne C. LeMieux, Ajay Virkar, Zhenan Bao
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Publication number: 20110206946Abstract: A method for producing a carbon nanotube-, fullerene- and/or graphene-containing coating on a substrate includes the steps of applying carbon nanotubes, fullerenes and/or graphenes onto a tin-containing coating and introducing carbon nanotubes, fullerenes and/or graphenes into the coating by mechanical and/or thermal treatment. A coated substrate produced by this method and the use of the coated substrate as an electromechanical component or lead frame are also described.Type: ApplicationFiled: September 3, 2009Publication date: August 25, 2011Applicants: KME GERMANY AG & CO. KG, TYCO ELECTRONICS AMP GMBH, WIELAND-WERKE AKTIENGESELLSCHAFTInventors: Helge Schmidt, Isabell Buresch, Udo Adler, Dirk Rode, Sonja Priggemeyer
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Publication number: 20110205688Abstract: Multilayer carbon nanotube capacitors, and methods and printable compositions for manufacturing multilayer carbon nanotubes (CNTs) are disclosed. A first capacitor embodiment comprises: a first conductor; a plurality of fixed CNTs in an ionic liquid, each fixed CNT comprising a magnetic catalyst nanoparticle coupled to a carbon nanotube and further coupled to the first conductor; and a first plurality of free CNTs dispersed and moveable in the ionic liquid. Another capacitor embodiment comprises: a first conductor; a conductive nanomesh coupled to the first conductor; a first plurality of fixed CNTs in an ionic liquid and further coupled to the conductive nanomesh; and a plurality of free CNTs dispersed and moveable in the ionic liquid. Various methods of printing the CNTs and other structures, and methods of aligning and moving the CNTs using applied electric and magnetic fields, are also disclosed.Type: ApplicationFiled: February 10, 2011Publication date: August 25, 2011Applicant: NTHDEGREE TECHNOLOGIES WORLDWIDE INC.Inventors: William Johnstone Ray, Mark David Lowenthal, Neil O. Shotton, Thomas William Clinton, Theodore I. Kamins, Vera Nicholaevna Lockett
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Publication number: 20110204258Abstract: A near infrared imaging and detection system is configured to analyze shifts in photoluminescence of individual nanostructures such as single-walled carbon nanotubes or quantum dots upon binding an analyte. The system can be used to detect, localize, and quantify analytes down to the single-molecule level in a sample and within living cells and can be operated in a multiplex format. The system also can be configured to perform high-throughput chemical analysis of a large number of samples simultaneously. The invention has application in the highly sensitive diagnosis of disease, as well as the detection and quantitative analysis of drugs, molecular pathogens within a living organism, and environmental toxins.Type: ApplicationFiled: December 10, 2010Publication date: August 25, 2011Inventors: Daniel A. Heller, Michael S. Strano
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Publication number: 20110198559Abstract: A method is provided for growth of carbon nanotube (CNT) synthesis at a low temperature. The method includes preparing a catalyst by placing the catalyst between two metal layers of high chemical potential on a substrate, depositing such placed catalyst on a surface of a wafer, and reactivating the catalyst in a high vacuum at a room temperature in a catalyst preparation chamber to prevent a deactivation of the catalyst. The method also includes growing carbon nanotubes on the substrate in the high vacuum in a CNT growth chamber after preparing the catalyst.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTDInventors: Shanzhong Wang, Mui Hoon Nai, Zhonglin Miao
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Publication number: 20110201764Abstract: The present invention is directed to new methods for combining, processing, and modifying existing materials, resulting in novel products with enhanced mechanical, electrical and electronic properties. The present invention provides for polymer/carbon nanotube composites with increased strength and toughness; beneficial for lighter and/or stronger structural components for terrestrial and aerospace applications, electrically and thermally conductive polymer composites, and electrostatic dissipative materials. Such composites rely on a molecular interpenetration between entangled single-wall carbon nanotubes (SWNTs) and cross-linked polymers to a degree not possible with previous processes.Type: ApplicationFiled: March 28, 2011Publication date: August 18, 2011Applicant: William Marsh Rice UniversityInventors: Constantine D. Armeniades, Enrique V. Barrera, Jong Dae Kim
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Publication number: 20110198542Abstract: An electrically conductive carbon nanotube-metal composite ink may include a carbon nanotube-metal composite in which metal nanoparticles are bound to a surface of a carbon nanotube by chemical self-assembly. The electrically conductive carbon nanotube-metal composite ink may have higher electrical conductivity than a commonly used metal nanoparticles-based conductive ink, and may also be used in deformable electronic devices that are flexible and stretchable, as well as commonly used electronic devices, due to the bending and stretching properties of the carbon nanotube itself.Type: ApplicationFiled: October 28, 2010Publication date: August 18, 2011Inventors: Jae-woo Chung, Seung-hyun Baik, Joong-hyuk Kim, Ru-Jun Ma, Young-seok Oh, Dae-woo Suh
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Publication number: 20110198543Abstract: Upon dispersing fine carbon fibers into water, by using an anionic surfactant having a high electrostatic repulsion effect, an nonionic surfactant having a high stereoscopic repulsion effect, and an anionic surfactant having high electrostatic and stereoscopic repulsion effects, in combination, an aqueous dispersion of fine carbon fibers which shows a high dispersibility without causing significant cohesion of mutual fine carbon fibers, and maintains a mean particle diameter (d50) of not more than 350 nm in a wide concentration range from a relatively low concentration to a relatively high concentration is provided.Type: ApplicationFiled: October 9, 2009Publication date: August 18, 2011Applicant: HODOGAYA CHEMICAL CO., LTD.,Inventors: Naohiro Tarumoto, Tomoko Tamura, Takayuki Tsukada
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Patent number: 7998367Abstract: According to various embodiments of the present teachings, there is a metal-carbon nanotubes composite and methods of making it. A method of forming a metal-carbon nanotube composite can include providing a plurality of carbon nanotubes and providing a molten metal. The method can also include mixing the plurality of carbon nanotubes with the molten metal to form a mixture of the carbon nanotubes and the molten metal and solidifying the mixture of the carbon nanotubes and the molten metal to form a metal-carbon nanotube composite.Type: GrantFiled: June 20, 2007Date of Patent: August 16, 2011Assignee: STC.UNMInventors: Tariq A. Khraishi, Marwan S. Al-Haik
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Patent number: 7998368Abstract: Carbon nanotubes (CNTs) are dispersed in an aqueous buffer solution consisting of at least 50 weight percent water and a remainder weight percent that includes a buffer material. The buffer material has a molecular structure defined by a first end, a second end, and a middle disposed between the first and second ends. The first end is a cyclic ring with nitrogen and oxygen heteroatomes, the middle is a hydrophobic alkyl chain, and the second end is a charged group.Type: GrantFiled: November 18, 2008Date of Patent: August 16, 2011Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Jae-Woo Kim, Cheol Park, Sang H. Choi, Peter T. Lillehei, Joycelyn S. Harrison
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Patent number: 7999028Abstract: The present invention provides a method for fast dispersing carbon nanotubes in an aqueous solution. In this method, the carbon nanotubes are added into an aqueous solution of a nontoxic surfactant, and then dispersed therein through ultrasonic oscillation. This uniform dispersion can maintain high stability for at least two months without aggregation, suspension or precipitation. This dispersion is suitable for calibrating concentration of the carbon nanotubes.Type: GrantFiled: June 21, 2006Date of Patent: August 16, 2011Assignee: Kuan-Jiuh LinInventors: Kuan-Jiuh Lin, Jun-Wei Su
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Publication number: 20110186809Abstract: Carbon nanotube (CNT)-based devices and technology for their fabrication are disclosed. The planar, multiple layer deposition technique and simple methods of change of the nanotube conductivity type during the device processing are utilized to provide a simple and cost effective technology for large scale circuit integration. Such devices as p-n diode, CMOS-like circuit, bipolar transistor, light emitting diode and laser are disclosed, all of them are expected to have superior performance then their semiconductor-based counterparts due to excellent CNT electrical and optical properties. When fabricated on semiconductor wafers, the CNT-based devices can be combined with the conventional semiconductor circuit elements, thus producing hybrid devices and circuits.Type: ApplicationFiled: January 7, 2011Publication date: August 4, 2011Inventor: ALEXANDER KASTALSKY
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Publication number: 20110189702Abstract: Disclosed are nano-sized materials that can exhibit luminescence in a multi-photon imaging technique. The materials include a nano-sized particle or a carbon nanotube and a passivation agent bound to the surface of the nanoparticle or nanotube. The passivation agent can be, for instance, a polymeric material. The passivation agent can also be derivatized for particular applications. For example, the luminescent materials can be derivatized to recognize and bind to a target material, for instance a biologically active material, a pollutant, or a surface receptor on a tissue or cell surface, such as in a tagging or staining protocol. The materials exhibit strong luminescence with multi-photon excitation in the near infrared.Type: ApplicationFiled: July 10, 2008Publication date: August 4, 2011Inventor: Ya-Ping Sun
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Publication number: 20110186785Abstract: There is provided a method for producing a nanocarbon material dispersion in which individual nanocarbon materials are separated from each other by mild processing. The method for producing a nanocarbon material dispersion of the present invention is characterized by including a step of preparing a composition by mixing a nanocarbon material with a dispersion medium comprising an amphiphilic triphenylene derivative, and a step of subjecting the composition to a mechanical dispersing processing.Type: ApplicationFiled: February 13, 2009Publication date: August 4, 2011Inventors: Masaru Kato, Shigeo Maruyama, Takuzo Aida, Takanori Fukushima, Tatsuhiro Yamamoto, Yuhei Miyauchi
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Patent number: 7989797Abstract: Carbon nanotube template arrays may be edited to form connections between proximate nanotubes and/or to delete undesired nanotubes or nanotube junctions.Type: GrantFiled: February 10, 2010Date of Patent: August 2, 2011Assignee: The Invention Science Fund I, LLCInventors: Roderick A. Hyde, Muriel Y. Ishikawa, Nathan P. Myhrvold, Clarence T. Tegreene, Charles Whitmer, Lowell L. Wood, Jr.
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Publication number: 20110174619Abstract: Electrical devices comprised of nanoscopic wires are described, along with methods of their manufacture and use. The nanoscopic wires can be nanotubes, preferably single-walled carbon nanotubes. They can be arranged in crossbar arrays using chemically patterned surfaces for direction, via chemical vapor deposition. Chemical vapor deposition also can be used to form nanotubes in arrays in the presence of directing electric fields, optionally in combination with self-assembled monolayer patterns. Bistable devices are described.Type: ApplicationFiled: July 13, 2006Publication date: July 21, 2011Applicant: President and Fellows of Harvard CollegeInventors: Charles M. Lieber, Thomas Rueckes, Ernesto Joselevich, Kevin Kim
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Publication number: 20110178210Abstract: An agglomerate or capsule capable of being prepared by freeze-drying a first agglomerate or capsule, said first agglomerate comprising a solvent, nanoobjects or nanostructures coated with macromolecules of polysaccharides being homogeneously distributed in said agglomerate or said capsule, and said macromolecules forming in at least one portion of the first agglomerate, a gel by crosslinking with positive ions. A nanocomposite material comprising this agglomerate. A method for preparing this agglomerate and this nanocomposite material.Type: ApplicationFiled: July 30, 2009Publication date: July 21, 2011Inventor: Pascal Tiquet
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Publication number: 20110168018Abstract: The invention relates to a hybrid nano sorbent that is capable of reducing and/or removing acidic gases in a gas stream. The hybrid nano sorbent includes at least (i) a nano-structured carbonous material including at least one organic functional group, (ii) at least one metal from at least one of groups 2A, 6B, 7B, 9B or 10B of the periodic table of elements, or (iii) a combination of (i) and (ii). The method for reducing and/or removing the acidic gases in a stream is also described.Type: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Applicant: RESEARCH INSTITUTE OF PETROLEUM INDUSTRY (RIPI)Inventors: Ali Mohamadalizadeh, Alimorad Rashidi, Jafar Towfighi Darian, Ali Mohajeri, Sorena Sattari, Mehrdad Manteghian
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Publication number: 20110169187Abstract: A nanocomposite structure and method of fabricating same are provided. The nanocomposite structure is a polymer in an extruded shape with carbon nanotubes (CNTs) longitudinally disposed and dispersed in the extruded shape along a dimension thereof. The polymer is characteristically defined as having a viscosity of at least approximately 100,000 poise at a temperature of 200° C.Type: ApplicationFiled: March 22, 2011Publication date: July 14, 2011Applicants: Space AdministrationInventors: Dennis C. Working, Emilie J. Siochi, Cheol Park, Peter T. Lillehei
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Publication number: 20110171419Abstract: An electronic element includes a substrate, and a transparent conductive layer. The substrate includes a surface. The transparent conductive layer is formed on a surface of the substrate. The transparent conductive layer includes at least one carbon nanotube layer. Carbon nanotubes in the carbon nanotube layer are adhered together by the van der Waals attractive force therebetween.Type: ApplicationFiled: September 29, 2008Publication date: July 14, 2011Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.Inventors: Qun-Qing Li, Kai-Li Jiang, Liang Liu, Shou-Shan Fan
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Publication number: 20110168954Abstract: An electromagnetic and/or chemical enhancement which greatly enhances the Raman signal response for Surface Enhanced Raman is directed to molecular probe systems. Such molecular probe systems have many properties that make them ideal as probes for Scanning Probe Microscopy, Atomic Force Microscopy, and many other applications.Type: ApplicationFiled: December 2, 2010Publication date: July 14, 2011Applicant: Carbon Design Innovations, Inc.Inventor: Ramsey M. Stevens
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Publication number: 20110168981Abstract: Carbon nanotube (CNT)-based devices and technology for their fabrication are disclosed. The planar, multiple layer deposition technique and simple methods of change of the nanotube conductivity type during the device processing are utilized to provide a simple and cost effective technology for large scale circuit integration. Such devices as p-n diode, CMOS-like circuit, bipolar transistor, light emitting diode and laser are disclosed, all of them are expected to have superior performance then their semiconductor-based counterparts due to excellent CNT electrical and optical properties. When fabricated on semiconductor wafers, the CNT-based devices can be combined with the conventional semiconductor circuit elements, thus producing hybrid devices and circuits.Type: ApplicationFiled: January 7, 2011Publication date: July 14, 2011Inventor: ALEXANDER KASTALSKY
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Publication number: 20110168083Abstract: A composition includes a carbon nanotube (CNT)-infused ceramic fiber material, wherein the CNT-infused ceramic fiber material includes: a ceramic fiber material of spoolable dimensions; and carbon nanotubes (CNTs) bonded to the ceramic fiber material. The CNTs are uniform in length and uniform in distribution. A continuous CNT infusion process includes (a) disposing a carbon-nanotube forming catalyst on a surface of a ceramic fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the ceramic fiber material, thereby forming a carbon nanotube-infused ceramic fiber material.Type: ApplicationFiled: February 26, 2010Publication date: July 14, 2011Applicant: Lockheed Martin CorporationInventors: Tushar K. SHAH, Slade H. GARDNER, Mark R. ALBERDING, Harry C. MALECKI
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Publication number: 20110171469Abstract: A composition includes a carbon nanotube (CNT)-infused aramid fiber material that includes an aramid fiber material of spoolable dimensions, a barrier coating conformally disposed about the aramid fiber material, and carbon nanotubes (CNTs) infused to the aramid fiber material. The infused CNTs are uniform in length and uniform in density. A continuous CNT infusion process includes:(a) disposing a barrier coating and a carbon nanotube (CNT)-forming catalyst on a surface of an aramid fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the aramid fiber material, thereby forming a carbon nanotube-infused aramid fiber material.Type: ApplicationFiled: November 2, 2010Publication date: July 14, 2011Applicant: Applied NanoStructured Solutions, LLCInventors: Tushar K. SHAH, Slade H. Gardner, Mark R. Alberding, Harry C. Malecki
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Publication number: 20110171531Abstract: In one aspect, the present invention provides a method of forming a film of nanocomposites of carbon nanotubes (CNTs) and platinum (Pt) nanoparticles. In one embodiment, the method includes the steps of (a) providing a first solution that contains a plurality of CNTs, (b) providing a second solution that contains a plurality of Pt nanoparticles, (c) combining the first solution and the second solution to form a third solution, and (d) filtering the third solution through a nanoporous membrane using vacuum filtration to obtain a film of nanocomposites of CNTs and Pt nanoparticles.Type: ApplicationFiled: September 8, 2010Publication date: July 14, 2011Applicant: NORTHWESTERN UNIVERSITYInventors: Mark C. Hersam, Gordana Ostojic, Yu Teng Liang
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Publication number: 20110171629Abstract: The present invention provides compositions and devices comprising nanostructure networks, and related methods. The compositions may exhibit enhanced interaction between nanostructures, providing improved device performance (e.g., improved conductivity). In some embodiments, the devices are capable of interacting with various species to produce an observable signal from the device. In some cases, the compositions and devices may be useful in the determination of analytes, including—biological analytes (e.g., DNA, ebola virus, other infective agents, etc.), small, organic analytes, and the like. The embodiments described herein may exhibit high sensitivity and specificity to analytes and may be capable of analyte detection at femtomolar concentrations (e.g., 10 fM).Type: ApplicationFiled: November 4, 2010Publication date: July 14, 2011Applicant: Massachusetts Institute of TechnologyInventors: Timothy M. Swager, Yossef Weizmann, David M. Chenoweth
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Patent number: 7976816Abstract: 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: May 12, 2010Date of Patent: July 12, 2011Assignee: 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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Patent number: 7977423Abstract: 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: GrantFiled: May 6, 2009Date of Patent: July 12, 2011Assignees: Stichting Dutch Polymer Institute, Ben-Gurion University of the Negev Research and Development AuthorityInventors: Cornelis E. Koning, Oren Regev, Joachim Loos
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Publication number: 20110163280Abstract: The present invention provides compositions (“Optical Nanomaterial Compositions”) comprising one or more nanomaterials and an optical coupling gel or an optical adhesive. The invention also provides methods for using the Optical Nanomaterial Compositions as an index-matching gel, an optical adhesive or an optical film, all of which are suitable for optical and sensing devices applications, including but not limited to noise suppression, passive Q-switching, mode-locking, waveform shaping, optical switching, optical signal regeneration, phase conjugation, in filter devices, dispersion compensation, wavelength conversion, soliton stabilization, microcavity applications, in interferometers (such as the Gires-Tournois interferometer), optical, magneto-optical or electro-optical modulation, biochemical sensors and photodetectors.Type: ApplicationFiled: March 17, 2011Publication date: July 7, 2011Applicant: CAMBRIDGE ENTERPRISE LIMITEDInventors: Oleksiy Rozhin, Andrea Ferrari, William Ireland Milne
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Publication number: 20110162966Abstract: Systems and methods are provided for the manipulation of a polarizable object with a pair of elongated nanoelectrodes using dielectrophoresis. The nanoelectrodes can be carbon nanotubes and are coupled with one or more time-varying voltage sources to create an electric field gradient in a gap between the nanotubes. The gradient induces the movement of a polarizable object in proximity with the field. The nanotube pair can be used to trap a single polarizable object in the gap. A method of fabricating a nanoelectrode dielectrophoretic system is also provided. Applications extend to self-fabricating nanoelectronics, nanomachines, nanochemistry and nanobiochemistry. A nanoelectrode dielectrophoretic system having an extended nanoelectrode for use in applications including the self-fabrication of a nanowire, as well as methods for fabricating the same, are also provided.Type: ApplicationFiled: December 20, 2010Publication date: July 7, 2011Inventors: Peter J. Burke, Shengdong Li, Lifeng Zheng
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Publication number: 20110155965Abstract: The present invention provides a polycarbonate resin composition comprising a polycarbonate (A), a styrene copolymer resin (B), carbon nano-tubes (C) and a carbon black (D).Type: ApplicationFiled: December 15, 2010Publication date: June 30, 2011Applicant: CHEIL INDUSTRIES INC.Inventors: Young Min Shin, Sang Wan Kim, Young Kyu Chang, Young Sil Lee
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Publication number: 20110160369Abstract: A precursor raw material for the PAN-based carbon fibers represented by Formula (I) is provided. In Formula (I), R is methyl, ethyl or propyl, x+z=0.5-20.0 mol %, z?0.5 mol %, y=99.5-80.0 mol % and x+y+z=100 mol %. The invention also provides a PAN-based oxidized fiber and a PAN-based carbon fiber prepared by the precursor raw material for the PAN-based carbon fibers.Type: ApplicationFiled: December 28, 2010Publication date: June 30, 2011Inventors: Tun-Fun WAY, Jiun-Jy Chen, Yu-Ting Chen, Kai-Jen Hsiao, Shu-Hui Cheng, Jong-Pyng Chen
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Patent number: 7968489Abstract: A new method for preparing a supported catalyst is herein provided. Carbon nanotubes are functionalized by contacting them with an oxidizing agent to form functionalized carbon nanotubes. A metal catalyst is then loaded or deposited onto the functionalized carbon nanotubes. The mixture is then extruded to form the supported catalyst comprising a carbon nanotube structure containing metal catalyst more evenly dispersed within the internal structure of the carbon nanotube structure.Type: GrantFiled: August 20, 2007Date of Patent: June 28, 2011Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, David Moy, Asif Chishti, Jun Yang
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Publication number: 20110149473Abstract: A composition comprising an electrode or an electrical double-layer capacitor with dielectric material is disclosed, along with methods of making the composition. The present invention improves upon state-of-the-art electrodes and capacitors by coating a material of high dielectric constant onto the surface of the electrode to produce improved electrical properties. The composition is particularly useful for design of novel electrical double-layer capacitors.Type: ApplicationFiled: December 21, 2010Publication date: June 23, 2011Inventors: Thor E. Eilertsen, Daniel A. Patsos
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Publication number: 20110147640Abstract: The thermoplastic resin composition of present invention comprises (A) about 50 to about 90% by weight polyphenylene sulfide resin; (B) about 5 to about 30% by weight graphite; (C) about 5 to about 30% by weight fluoropolyolefin resin; (D) about 1 to about 10% by weight whiskers; and (E) about 0.01 to about 10% by weight carbon nanotubes. The thermoplastic resin composition can exhibit electrical conductivity, wear resistance and heat resistance.Type: ApplicationFiled: February 18, 2011Publication date: June 23, 2011Applicant: CHEIL INDUSTRIES INC.Inventors: Sang Wan KIM, Sun Ho PARK, Young Kyu CHANG, Young Sil LEE
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Patent number: 7965156Abstract: Under one aspect, a resonator 400 includes a nanotube element 410 including a non-woven fabric of unaligned nanotubes and having a thickness, and a support structure 404 defining a gap 406 over which the nanotube element 410 is suspended, the thickness of the nanotube element 410 and the length of the gap 406 being selected to provide a pre-specified resonance frequency for the resonator 400 The resonator 400 also includes a conductive element 412 in electrical contact with the nanotube element 410, a drive electrode 408 in spaced relation to the nanotube element 410, and power logic in electrical contact with die at least one drive electrode 408 The power logic provides a series of electrical pulses at a frequency selected to be about the same as the pre-specified resonance frequency of the resonator 400 to the drive electrode 408 during operation of the resonator 400, such that the nanotube element 410 responds to the series of electrical pulses applied to the drive electrode 408 by making a series of mechaType: GrantFiled: September 5, 2006Date of Patent: June 21, 2011Assignee: Nantero, Inc.Inventors: Jonathan W. Ward, Brent M. Segal
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Publication number: 20110143614Abstract: Provided is a plastic substrate. The plastic substrate includes a carbon nanotube thin film having a matrix type mesh shape, and a plastic thin film support configured to at least fill spaces of the matrix type mesh shape and cover one side of the carbon nanotube thin film. The plastic substrate may have a low coefficient of thermal expansion and be flexible and conductive.Type: ApplicationFiled: July 2, 2010Publication date: June 16, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seongdeok AHN, Seung Youl KANG
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Publication number: 20110142743Abstract: A method and system are disclosed for separating single-walled carbon nanotubes from double and multi-walled carbon nanotubes by using the difference in the buoyant density of Single-Walled versus Multi-Walled carbon nanotubes. In one embodiment, the method comprises providing a vessel with first and second solutions. The first solution comprises a quantity of carbon nanotubes, including single-walled carbon nanotubes and double and multi-walled carbon nanotubes. The single walled nanotubes have a first density, the double and multi-walled nanotubes having a second density. The second solution in the vessel has a third density between said first and second densities. The vessel is centrifuged to form first and second layers in the vessel, with the second solution between said first and second layers. The single-walled carbon nanotubes are predominantly in the first layer, and the second and multi-walled carbon nanotubes are predominantly in the second layer.Type: ApplicationFiled: December 11, 2009Publication date: June 16, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ageeth A. Bol, George S. Tulevski
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Publication number: 20110142508Abstract: The present teachings provide a fuser member, including a substrate and a release layer disposed on the substrate. The release layer includes a plurality of carbon nanotubes surrounded by a fluoroelastomeric shell layer and dispersed in a fluoroplastic.Type: ApplicationFiled: December 16, 2009Publication date: June 16, 2011Applicant: Xerox CorporationInventors: Yu Qi, Qi Zhang, Nan-Xing Hu, Gordon Sisler, Guiqin Song
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Publication number: 20110143143Abstract: The present teachings include a coating composition which includes a liquid, fluoropolymer particles, carbon nanotubes, and a dispersant. The dispersant has a thermal degradation temperature below the melting temperature of the fluoropolymer particles.Type: ApplicationFiled: December 16, 2009Publication date: June 16, 2011Applicant: XEROX CORPORATIONInventors: Yu Qi, Nan-Xing Hu, David C. Irving, Patrick J. Finn
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Publication number: 20110142091Abstract: Systems and methods related to the determination of one or more mechanical characteristics of a structural element are generally described. In some embodiments, a mechanical characteristic (e.g., a crack, a deformation, an inclusion, etc.) can be determined based at least in part upon the determination of a temperature generated, for example, by passing a current through a network of structures within the structural element. For example, in some embodiments, the structural element can comprise a network of electrically conductive nanostructures and, in some cases, a primary structural material that is not substantially electrically conductive. An electrical current can be passed through the network of electrically conductive nanostructures (e.g., by passing current through an electrical circuit comprising the network of electrically conductive nanostructures). This may result in resistive heating (also known as Joule-effect heating) of the nanostructure network.Type: ApplicationFiled: November 10, 2010Publication date: June 16, 2011Applicant: Massachusetts Institute of TechonologyInventors: Brian L. Wardle, Roberto Guzman de Villoria, Antonio Miravete
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Publication number: 20110135835Abstract: A method includes generating an aerosol comprising a plurality of catalyst particles from a precursor solution comprising a carbon source and a catalyst, transmitting the plurality of catalyst particles through a reaction zone extending along a temperature profile including at least one temperature sufficient to induce in each of the plurality of catalyst particles growth of a plurality of carbon nanotubes, and positioning at least one substrate along the temperature profile and at least partially outside of the reaction zone at a position to collect a portion of the plurality of carbon nanotubes on a surface of the at least one substrate.Type: ApplicationFiled: June 8, 2010Publication date: June 9, 2011Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Hyungbin Son, Jing Kong, Mario Hofmann, Ya-Ping Hsieh
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Publication number: 20110135827Abstract: Provided is CNTs on which TiO2 is uniformly coated. The method includes: functionalizing CNTs with hydrophilic functional groups; mixing the CNTs functionalized with hydrophilic functional groups in a solution that contains with TiO2 precursors; refining TiO2 precursor-coated CNTs from the solution in which the CNTs and the TiO2 precursors are mixed; and heat treating the refined TiO2-coated CNTs. The TiO2-coated CNTs formed in this manner simultaneously retain the characteristics of CNTs and TiO2 nanowires, and thus, can be applied to solar cells, field emission display devices, gas sensors, or optical catalysts.Type: ApplicationFiled: March 19, 2008Publication date: June 9, 2011Applicant: Electronic and Telecommunications Research InstituteInventors: Ki-Chul Kim, Sung-Lyul Maeng, Sang-Hyeob Kim, Rae-Man Park, Jong-Hyurk Park, Young-Jin Choi, Dae-Joon Kang
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Patent number: 7951351Abstract: Methods of preparing single walled carbon nanotubes from a metal catalyst having deposited thereon fullerenes are provided. Fullerenes are deposited onto a metal catalyst precursor or metal catalyst. In the presence of a carbon containing gas, the metal catalyst precursor/fullerene composition is then exposed to conditions suitable for reducing the metal catalyst precursor, for subliming the fullerene and for growing single walled carbon nanotubes. The fullerenes form the end caps for the resulting single walled carbon nanotubes, which are uniform in diameter.Type: GrantFiled: March 29, 2007Date of Patent: May 31, 2011Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Howard Tennent
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Publication number: 20110123732Abstract: Exemplary embodiments provide an intermediate transfer member that can include a plurality of carbon nanotubes dispersed in an ultraviolet (UV) curable polymer in an amount to allow a bulk curing of the UV curable polymer and to provide the cured polymer an electrical resistivity and/or a mechanical modulus useful for electrostatographic devices and processes.Type: ApplicationFiled: November 24, 2009Publication date: May 26, 2011Applicant: XEROX CORPORATIONInventors: Geoffrey M. T. Foley, Jin Wu, Satchidanand Mishra