Single-walled Patents (Class 977/750)
Cross-Reference Art Collections
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Patent number: 8501049Abstract: A semiconductive composition and a power cable using the same are provided. A semiconductive composition includes, per 100 parts by weight of a polyolefin base resin, 0.5 to 2.15 parts by weight of carbon nanotubes, and 0.1 to 1 parts by weight of an organic peroxide crosslinking agent.Type: GrantFiled: September 15, 2011Date of Patent: August 6, 2013Assignee: LS Cable & System Ltd.Inventors: Yoon-Jin Kim, Chang-Mo Ko, Ung Kim
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Publication number: 20130195751Abstract: Provided are a self-assembled conjugate of a host molecule containing compound and a guest molecule containing compound, a delivery composition of a bioactive material comprising the self-assembled conjugate and a bioactive material to be delivered, and a composition for tissue engineering containing the self-assembled conjugate and a cell.Type: ApplicationFiled: January 31, 2012Publication date: August 1, 2013Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Sei Kwang HAHN, Kimoon KIM, Hyuntae JUNG, Jeong-A YANG, Kyeng Min PARK
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Patent number: 8496904Abstract: An activated catalyst capable of selectively growing single-walled carbon nanotubes when reacted with carbonaceous gas is provided. The activated catalyst is formed by reducing a catalyst that comprises a complex oxide. The complex oxide may be of formula Ax-wFwBy-vGvOz wherein x/y?2; z/y?4; 0?w?0.3x; 0?v?0.3y; A is a Group VIII element; F is an element that is different from A but has, in said composition, the same valence state as A; B is an element different from A and F, and is an element whose simple oxide, in which B is at the same valence state as in the complex oxide, is not reducible in the presence of hydrogen gas at a temperature less than about 900° C.; G is an element different from A, B and F, and is an element whose simple oxide, in which G is at the same valence state as in the complex oxide, is not reducible in the presence of hydrogen gas at a temperature less than about 900° C.; and O is oxygen. The complex oxide is reduced at a temperature less that 950° C.Type: GrantFiled: November 20, 2006Date of Patent: July 30, 2013Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, David Moy
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Patent number: 8492076Abstract: Provided is a method of manufacturing carbon nanotube (CNT) device arrays. In the method of manufacturing CNT device arrays, catalyst patterns may be formed using a photolithography process, CNTs may be grown from the catalyst patterns, and electrodes may be formed on the grown CNTs.Type: GrantFiled: December 1, 2009Date of Patent: July 23, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Un-jeong Kim, Eun-hong Lee, Young-hee Lee, Il-ha Lee
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Publication number: 20130181352Abstract: Provided are a method of growing carbon nanotubes laterally, including forming catalyst dots to grow carbon nanotubes on a substrate, forming a sacrificial layer including a plurality of nanochannels including regions having the catalyst dots formed therein, and growing carbon nanotubes through the nanochannels, and a field effect transistor using the method.Type: ApplicationFiled: March 1, 2012Publication date: July 18, 2013Applicant: Industry-Academic Cooperation Foundation at NamSeoul UnversityInventors: Sun-Woo Lee, Boong-Joo Lee
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Publication number: 20130184144Abstract: In one aspect, a method of making non-covalently bonded carbon-titania nanocomposite thin films includes: forming a carbon-based ink; forming a titania (TiO2) solution; blade-coating a mechanical mixture of the carbon-based ink and the titania solution onto a substrate; and annealing the blade-coated substrate at a first temperature for a first period of time to obtain the carbon-based titania nanocomposite thin films. In certain embodiments, the carbon-based titania nanocomposite thin films may include solvent-exfoliated graphene titania (SEG-TiO2) nanocomposite thin films, or single walled carbon nanotube titania (SWCNT-TiO2) nanocomposite thin films.Type: ApplicationFiled: January 18, 2013Publication date: July 18, 2013Applicant: NORTHWESTERN UNIVERSITYInventor: Northwestern University
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Publication number: 20130171515Abstract: An anode material is provided for a surface of an electrode. The anode material comprises carbon-containing substrates and unsaturated compounds. At least one chemical bond is formed between the unsaturated compounds and the surfaces of the carbon-containing substrates.Type: ApplicationFiled: April 23, 2012Publication date: July 4, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Li-Duan Tsai, Wei-Hsin Wu, Yueh-Wei Lin, Chia-Chen Fang
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Patent number: 8475760Abstract: The invention relates to an apparatus for producing nanotubes, the apparatus being adapted to produce doped and/or undoped single-walled or multi-walled nanotubes, the apparatus comprising at least a thermal reactor. In accordance with the invention, the reactor is at least of the hottest part thereof and at least partly manufactured from a material that is at least partly sublimed into the thermal reactor as a result of the thermal reactor being heated, and the sublimed material at least partly participates in the growth of the nanotubes.Type: GrantFiled: March 20, 2008Date of Patent: July 2, 2013Assignee: Beneq OyInventors: Markku Rajala, Pekka Soininen, Anssi Hovinen, Jari Sinkko
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Publication number: 20130161066Abstract: The present invention provides a method for fabricating a carbon nanotube-loaded electrode enabling that hybrid carbon nanotubes comprising dendrimer-encapsulated metal nanoparticles covalently immobilized on carbon nanotubes via a first covalent bond are made and such hybrid carbon nanotubes are then covalently immobilized on a metal electrode coated with a self-assembled monolayer via a second covalent bond. Also provided is a carbon nanotube-loaded electrode made by the method. The electrode thus made possesses high durability, reactivity and stability.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Toyoko Imae, Ampornphan Siriviriyanun
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Publication number: 20130149447Abstract: A method of growing carbonaceous particles comprises depositing carbon from a carbon source, onto a particle nucleus, the particle nucleus being a carbon-containing material, an inorganic material, or a combination comprising at least one of the foregoing, and the carbon source comprising a saturated or unsaturated compound of C20 or less, the carbonaceous particles having a uniform particle size and particle size distribution. The method is useful for preparing polycrystalline diamond compacts (PDCs) by a high-pressure, high temperature (HPHT) process.Type: ApplicationFiled: December 9, 2011Publication date: June 13, 2013Applicant: BAKER HUGHES INCORPORATEDInventors: Oleg A. Mazyar, Soma Chakraborty, Oleksandr Kuznetsov, Anthony A. DiGiovanni, Gaurav Agrawal, Michael H. Johnson
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Publication number: 20130146439Abstract: Described herein is a method for the photo-induced reduction/oxidation of carbon nanotubes, and their use in photochemical cells and in electrochemical cells for the generation of hydrogen.Type: ApplicationFiled: December 8, 2011Publication date: June 13, 2013Inventors: Vsevolod Rostovtsev, Ming Zheng
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Patent number: 8460782Abstract: An array of aligned and dispersed carbon nanotubes includes an elongate drawn body including a plurality of channels extending therethrough from a first end to a second end of the body, where the channels have a number density of at least about 100,000 channels/mm2 over a transverse cross-section of the body. A plurality of carbon nanotubes are disposed in each channel, and the carbon nanotubes are sufficiently dispersed and aligned along a length of the channels for the array to comprise an average resistivity per channel of about 9700 ?m or less.Type: GrantFiled: May 16, 2012Date of Patent: June 11, 2013Assignee: UT-Battelle, LLCInventors: Ilia N Ivanov, John T Simpson, Troy R Hendricks
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Patent number: 8461571Abstract: In accordance with an example embodiment of the present invention, an apparatus including a nanopillar and a graphene film, the graphene film being in contact with a first end of the nanopillar, wherein the nanopillar includes a metal, the contact being configured to form an intrinsic field region in the graphene film, and wherein the apparatus is configured to generate a photocurrent from a photogenerated charge carrier in the intrinsic field region.Type: GrantFiled: June 29, 2011Date of Patent: June 11, 2013Assignee: Nokia CorporationInventor: Alan Colli
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Publication number: 20130140499Abstract: The present invention relates to a conductive polymer composition for a PTC element with decreased NTC characteristics, using carbon nanotubes, a PTC binder resin, and a cellulose-based or polyester-based resin for fixing the carbon nanotubes and the PTC binder, and to a PTC element, a circuit and a sheet heating element using the same.Type: ApplicationFiled: September 19, 2011Publication date: June 6, 2013Applicant: LG HAUSYS, LTD.Inventors: Seong-Hoon Yue, Yong-Bae Jung, Min-Hee Lee, Won-Kook Kim, Dong-Joo Kwon
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Publication number: 20130140498Abstract: Methods and systems for improved dispersion and solubility of carbon materials such as carbon nanotubes through novel binary solvent blends, which include in some embodiments, a mixture of a dibasic ester blend and DMSO.Type: ApplicationFiled: November 29, 2012Publication date: June 6, 2013Applicant: RHODIA OPERATIONSInventor: RHODIA OPERATIONS
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Publication number: 20130137324Abstract: The present invention provides carbon nanotube coated fabric compositions for the purpose tuning the optical properties of fabric, in particular the optical transmittance, absorption, and reflectance in the visible, NIR and mid-IR ranges. The carbon nanotube coated fabrics of the present invention exhibit relatively uniform absorptivity and reflectivity of light across visible and IR spectral ranges and are ideal for use in stealth operations for counteracting night vision detection devices. The carbon nanotube coatings are thin, flexible coatings exhibiting high thermal and chemical stability, strong adhesion, low weight, and high tensile strength. In one embodiment, the composition includes an insulator layer for thermally isolating the CNT coating and establishing thermal equilibrium with the surrounding environment through the absorption of thermal IR emitted from hot objects. Processes for preparing the carbon nanotube coated fabrics are also described herein.Type: ApplicationFiled: March 25, 2011Publication date: May 30, 2013Inventor: Xiaowu Shirley Tang
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Publication number: 20130136994Abstract: An improved anode material for a lithium ion battery is disclosed. The improved anode material can improve both electric conductivity and the mechanical resilience of the anode, thus drastically increasing the lifetime of lithium ion batteries.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Inventors: Jun Ma, Zhaojie Wei, Guanghui Feng, Bin He, Gang Xu, Tao Zheng
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Patent number: 8448790Abstract: A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided.Type: GrantFiled: June 27, 2012Date of Patent: May 28, 2013Assignee: International Business Machines CorporationInventors: John M. Cotte, Christopher V. Jahnes, Hongbo Peng, Stephen M. Rossnagel
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Publication number: 20130128339Abstract: Described herein are compositions that are photorefractive upon irradiation by multiple laser wavelengths across the visible light spectrum. Embodiments of the photorefractive composition comprise a polymer, a chromophore, and a sensitizer, wherein the polymer comprises a repeating unit including at least a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic), as defined herein. The photorefractive composition can be used in optical devices.Type: ApplicationFiled: August 5, 2010Publication date: May 23, 2013Applicant: NITTO DENKO CORPORATIONInventors: Tao Gu, Mohanalingam Kathaperumal, Rachwal Bogumila, Joshua Tillema, Ozair Siddiqui, Peng Wang, Weiping Lin, Donald Flores, Zongcheng Jiang, Shijun Zheng, Michiharu Yamamoto
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Publication number: 20130130060Abstract: Disclosed is a transparent conductive film including a substrate, and a conductive composite on the substrate, wherein the conductive composite includes conductive carbon material and a non-carbon inorganic material having a surface modified by an electron-withdrawing group, and the non-carbon inorganic material contacts the conductive carbon material. Furthermore, the disclosed provides a method of manufacturing the transparent conductive film.Type: ApplicationFiled: February 1, 2012Publication date: May 23, 2013Inventors: Shin-Liang KUO, Cheng-Jyun Huang, Shu-Jiuan Huang
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Publication number: 20130130037Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. The method includes depositing nanotube film over a substrate to produce a layer of nanotube film, removing impurities from a surface of the layer of nanotube film not contacting the substrate to produce a cleaned layer of nanotube film, depositing a layer of graphene over the cleaned layer of nanotube film to produce a nanotube-graphene hybrid film, and removing impurities from a surface of the nanotube-graphene hybrid film to produce a cleaned nanotube-graphene hybrid film, wherein the hybrid film has improved electrical performance. Another method includes depositing nanotube film over a metal foil to produce a layer of nanotube film, placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film, and transferring the nanotube-graphene hybrid film over a substrate.Type: ApplicationFiled: November 22, 2011Publication date: May 23, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
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Patent number: 8445587Abstract: Improved mechanical properties of either clay or carbon nanotube (CNT)-reinforced polymer matrix nanocomposites are obtained by pre-treating nanoparticles and polymer pellets prior to a melt compounding process. The clay or CNTs are coated onto the surfaces of the polymer pellets by a milling process. The introduction of moisture into the mixture of the nanoparticles and the polymer pellets results in the nanoparticles more easily, firmly, and thoroughly coating onto the surfaces of the polymer pellets.Type: GrantFiled: July 18, 2010Date of Patent: May 21, 2013Assignee: Applied Nanotech Holdings, Inc.Inventors: Dongsheng Mao, Zvi Yaniv
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Patent number: 8440994Abstract: Carbon nanotube (CNT)-based devices and technology for their fabrication are disclosed. The discussed electronic and photonic devices and circuits rely on the nanotube arrays grown on a variety of substrates, such as glass or Si wafer. 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 a 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 Si-wafers, the CNT-based devices can be combined with the Si circuit elements, thus producing hybrid Si-CNT devices and circuits.Type: GrantFiled: January 24, 2008Date of Patent: May 14, 2013Assignee: Nano-Electronic and Photonic Devices and Circuits, LLCInventor: Alexander Kastalsky
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Publication number: 20130115840Abstract: A carbon nanopipe comprising a durable graphitizable carbon wall of tunable thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers. The atmosphere of the step of depositing is controlled by a two-stage gas manifold wherein stage 1 purges the reaction chamber with pure argon and stage 2 introduces the carbon precursor.Type: ApplicationFiled: May 25, 2012Publication date: May 9, 2013Applicant: The Government of the United States of America as represented by the secretary of the NavyInventors: Justin C. Lytle, Trevor N. Zimmerman, Debra R. Rolison
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Publication number: 20130108826Abstract: In various embodiments, the present invention provides method of forming composites. Such methods generally comprise: (1) applying carbon nanotubes onto a system, wherein the system comprises at least one of an electric field or a magnetic field, and wherein the at least one electric field or magnetic field unidirectionally aligns the carbon nanotubes; and (2) applying a polymer onto the carbon nanotubes while the carbon nanotubes are unidirectionally aligned by the at least one electric field or magnetic field. The application of the polymer onto the carbon nanotubes forms composites that comprise unidirectionally aligned carbon nanotubes embedded in the polymer. In further embodiments, the present invention provides polymer composites formed by the methods of the present invention.Type: ApplicationFiled: April 6, 2011Publication date: May 2, 2013Applicant: William Marsh Rice UniversityInventors: Divya Kannan Chakravarthi, Ahmad Salman, Enrique V. Barrera, Michael T. Searfass, Kyle Kissell
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Publication number: 20130105328Abstract: Glucose and ATP biosensors have important applications in diagnostics and research. Combining single-walled carbon nanotubes (SWCNTs) with Pt nanoparticles can significantly enhance the performance of electrochemical biosensors. This disclosure illustrates the use of single-stranded DNA (ssDNA) to modify SWCNTs to increase SWCNT solubility in water. Multiple embodiments with this configuration allows for exploration of new schemes of combining ssDNASWCNT and Pt black in aqueous media systems. These embodiments resulted in a nanocomposite with enhanced biosensor performance. The ssDNA-SWCNT/Pt black nanocomposite constructed by a layered scheme proved most effective in terms of biosensor activity. The key feature of this structure and method of use is the exploitation of ssDNASWCNTs as molecular templates for Pt black electrodeposition. Glucose and ATP microbiosensors fabricated utilizing this structure and method of use exhibited high sensitivity, wide linear range and low limit of detection.Type: ApplicationFiled: September 14, 2012Publication date: May 2, 2013Applicant: Purdue Research FoundationInventors: Tae-Gon Cha, Jong Hyun Choi, Jonathan C. Claussen, Alfred R. Diggs, Jin Shi
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Publication number: 20130104665Abstract: In one aspect, the present invention relates to a layered structure usable in a strain sensor. In one embodiment, the layered structure has a substrate with a first surface and an opposite, second surface defining a body portion therebetween; and a film of carbon nanotubes deposited on the first surface of the substrate, wherein the film of carbon nanotubes is conductive and characterized with an electrical resistance. In one embodiment, the carbon nanotubes are aligned in a preferential direction. In one embodiment, the carbon nanotubes are formed in a yarn such that any mechanical stress increases their electrical response. In one embodiment, the carbon nanotubes are incorporated into a polymeric scaffold that is attached to the surface of the substrate. In one embodiment, the surfaces of the carbon nanotubes are functionalized such that its electrical conductivity is increased.Type: ApplicationFiled: October 29, 2012Publication date: May 2, 2013Applicant: BOARD OF TRUSTEES OF THE UNIVERSITY OF ARKANSASInventor: Board of Trustees of the University of Arkansas
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Publication number: 20130102719Abstract: A dispersion includes a carbonaceous nanoparticle, a dispersant including a graft polymer having a poly(alkylene glycol) side chain, and a polar solvent. An article coated with the dispersion and a method of making the dispersion are disclosed.Type: ApplicationFiled: April 13, 2012Publication date: April 25, 2013Applicant: BAKER HUGHES INCORPORATEDInventors: Hendrik John, Claus-Peter Klages, Sven Hartwig
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Patent number: 8425873Abstract: Provided are a transparent electroconductive thin film of single-walled carbon nanotubes and its production method capable of further enhancing the electroconductivity and the light transmittance of the film and capable of simplifying the thin film formation process. The method comprises: dispersing single-walled carbon nanotubes of mixed metallic single-walled carbon nanotubes (m-SWNTs) and semiconductor single-walled carbon nanotubes (s-SWNTs) in an amine solution containing an amine having a boiling point of from 20 to 400° C. as a dispersant; centrifuging or filtering the resulting dispersion to concentrate m-SWNTs, thereby giving a dispersion rich in m-SWNTs; and applying the resulting dispersion rich in m-SWNTs onto a substrate to form a thin film thereon.Type: GrantFiled: July 10, 2008Date of Patent: April 23, 2013Assignee: Japan Science and Technology AgencyInventors: Yutaka Maeda, Takeshi Akasaka
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Publication number: 20130095314Abstract: In some embodiments, the present invention provides methods of immobilizing carbon nanotubes on a surface, wherein the method comprises: (1) mixing carbon nanotubes with a superacid to form a carbon nanotube solution; and (2) exposing the carbon nanotube solution to the surface. The exposing results in the immobilization of the carbon nanotubes on the surface. In some embodiments, the method occurs without the utilization of carbon nanotube wrapping molecules. Other embodiments of the present invention pertain to systems that comprise immobilized carbon nanotubes on a surface, as developed by the aforementioned methods.Type: ApplicationFiled: January 11, 2011Publication date: April 18, 2013Applicant: William Marsh Rice UniversityInventors: Angel A. Marti-Arbona, Avishek Saha, Matteo Pasquali
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Publication number: 20130092236Abstract: Solar cells are provided. The solar cell may include a substrate, a first electrode, a light absorption layer, a second electrode. Additionally, an intrinsic layer and a buffer layer may further be disposed between the light absorption layer and the second electrode. Here, the first and second electrodes may consist of carbon nanotubes of which polarities may be controlled. Thus, a flexible solar cell of low costs and high efficiency may be realized.Type: ApplicationFiled: June 11, 2012Publication date: April 18, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventor: Kyung Hyun KIM
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Patent number: 8420729Abstract: It is disclosed a method for preparing a nano hybrid resin containing carbon nano materials as graphitizing agents with predetermined characteristics by formation of graphite phase in residual carbon.Type: GrantFiled: July 8, 2009Date of Patent: April 16, 2013Inventors: Mohamad Ali Sharif Sheikhaleslami, Farhad Golestanifard, Hossein Sarpoolaky
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Publication number: 20130090542Abstract: The present disclosure provides robust implantable micro-component electrodes that can be used in a variety of medical devices. The medical device may be a neural probe that can monitor or stimulate neural activity in an organism's brain, spine, nerves, or organs, for example. The micro-component electrode has a small physical profile, with ultra-thin dimensions, while having high strength and flexibility. The micro-electrode has an electrically conductive core material, e.g., carbon. The surface of the core material includes one or more electrically conductive regions coated with an electrically conductive material and one or more non-conductive regions having an electrically non-conductive biocompatible polymeric coating. Implantable devices having such micro-components are capable of implantation in an organism for very long durations.Type: ApplicationFiled: June 16, 2011Publication date: April 11, 2013Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Daryl R. Kipke, Takashi Daniel Yoshida Kozai, Nick Langhals, Joerg Lahann, Nicholas A. Kotov, Xiaopei Deng, Paras Patel
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Publication number: 20130090405Abstract: The present invention relates to the development and fabrication of thin-film polymer nanocomposites containing vertically aligned nanomaterials, such as single-walled carbon nanotubes (SWNTs). In certain embodiments, the present invention utilizes liquid crystal mesophases of hexagonally packed cylindrical micelles that orient with their long axes parallel to an applied magnetic field, thereby directing the alignment of the nanomaterials, such as SWNTs, sequestered in the micellar cores. In certain embodiments, the mesophase may be a stable, single-phase material containing monomers that can be polymerized after nanotube alignment to form the nanocomposite polymer.Type: ApplicationFiled: October 11, 2012Publication date: April 11, 2013Applicant: Yale UniversityInventor: Yale University
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Patent number: 8415012Abstract: A membrane electrode assembly (MEA) for a fuel cell comprising a catalyst layer and a method of making the same. The catalyst layer can include a plurality of catalyst nanoparticles, e.g., platinum, disposed on buckypaper. The catalyst layer can have 1% or less binder prior to attachment to the membrane electrode assembly. The catalyst layer can include (a) single-wall nanotubes, small diameter multi-wall nanotubes, or both, and (b) large diameter multi-wall nanotubes, carbon nanofibers, or both. The ratio of (a) to (b) can range from 1:2 to 1:20. The catalyst layer can produce a surface area utilization efficiency of at least 60% and the platinum utilization efficiency can be 0.50 gPt/kW or less.Type: GrantFiled: July 17, 2009Date of Patent: April 9, 2013Assignee: Florida State University Research Foundation, Inc.Inventors: Jian-ping Zheng, Zhiyong Liang, Ben Wang, Chun Zhang, Wei Zhu
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Publication number: 20130084644Abstract: A chemical sensor is disclosed. The chemical sensor is an electronic device including in specific embodiments a first transistor and a second transistor. The first transistor includes a semiconducting layer made of a first semiconductor and carbon nanotubes. The second transistor includes a semiconducting layer made of a second semiconductor, and does not contain carbon nanotubes. The two transistors vary in their response to chemical compounds, and the differing response can be used to determine the identity of certain chemical compounds. The chemical sensor can be useful as a disposable sensor for explosive compounds such as trinitrotoluene (TNT). The electronic device is used in conjunction with an analyzer that processes information generated by the electronic device.Type: ApplicationFiled: October 4, 2011Publication date: April 4, 2013Applicant: XEROX CORPORATIONInventors: Yiliang Wu, Ping Liu, Anthony James Wigglesworth
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Publication number: 20130075074Abstract: A thermal dissipation device for an electronic device includes a heat sink having predetermined shape and form for placing over the electronic device, wherein the heat sink includes fins for increase surface area; and carbon nanotubes formed on a surface of the heat sink and the fins to increase the thermal dissipation surface, thereby enhancing thermal dissipation. The carbon nanotubes comprises multi-walled carbon nanotubes (MWNTs), single-walled carbon nanotubes (SWNTs), graphenated carbon nanotubes.Type: ApplicationFiled: November 9, 2012Publication date: March 28, 2013Inventor: Kuo-Ching CHIANG
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Publication number: 20130078622Abstract: A single molecule sensing device includes a first electrode, a second electrode and a single-walled carbon nanotube (SWNT) connected to the first and second electrodes. At least one linker molecule having first and second functional groups is functionalized with a sidewall of the SWNT, the at least one linker molecule having the first functional group non-covalently functionalized with a sidewall of the single-walled carbon nanotube. A single sensitizing molecule having at least one functional group is functionalized with the second functional group of the at least one linker molecule.Type: ApplicationFiled: September 25, 2012Publication date: March 28, 2013Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventor: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
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Publication number: 20130069271Abstract: The present invention provides methods of strengthening composites. In some embodiments, such methods generally comprise a step of applying a dynamic stress to the composite in order to increase at least one of the stiffness or strength of the composite. In some embodiments, the composite comprises: a polymer matrix; nanomaterial fillers; and an interphase between the polymer matrix and the nanomaterial fillers. In some embodiments, the stiffness or strength of the composite increases permanently in response to the applied stress. In some embodiments, the increase in the stiffness or strength of the composite may be associated with an increase in the storage modulus of the composite, a decrease in the loss modulus of the composite, and a decrease in the loss tangent of the composite. In some embodiments, the applied stress results in a rearrangement of the interphase.Type: ApplicationFiled: June 22, 2012Publication date: March 21, 2013Applicant: William Marsh Rice UniversityInventors: Pulickel M. Ajayan, Brent Joseph Carey
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Patent number: 8399553Abstract: The present invention relates to a (process for preparation of a) carbon nanotubes reinforced polymer, wherein the matrix polymer has both a low molecular weight fraction as well as a high molecular weight fraction, as a result of which the level of conductivity of the resulting composite can be controlled.Type: GrantFiled: April 6, 2007Date of Patent: March 19, 2013Assignee: Stichting Dutch Polymer InstituteInventors: Cornelis Koning, Nadia Grossiord, Jan Meuldijk, Joachim Loos
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Publication number: 20130062195Abstract: A catalyst free process for manufacturing carbon nanotubes by inducing an arc discharge from a vein graphite anode and a vein graphite cathode in an inert gas atmosphere contained in a closed vessel. The process is carried out at atmospheric pressure in the absence of external cooling mechanism for the carbon cathode or the carbon anode.Type: ApplicationFiled: August 21, 2012Publication date: March 14, 2013Applicant: Sri Lanka Institute of Nanotechnology (PVT) Ltd.Inventors: Lilantha Samaranayake, Nilwala Kottegoda, Asurasinghe R. Kumarasinghe, Ajith De Alwis, Sunanda Gunasekara, Sameera Nanayakkara, Veranja Karunaratne
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Publication number: 20130065798Abstract: Embodiments of the invention provide a drilling, drill-in, and completion water-based mud composition containing micro or nanoparticles for use in hydrocarbon drilling. The water-based drilling mud composition includes water present in an amount sufficient to maintain flowability of the water-based drilling mud composition, and drilling mud, which includes particles. The particles are selected from microparticles, nanoparticles, and combinations thereof. The water-based drilling mud composition also includes an effective amount of a multi-functional mud additive, which includes psyllium seed husk powder. The water-based drilling mud composition is operable to keep the particles stabilized and dispersed throughout the drilling mud composition in the absence of a surfactant.Type: ApplicationFiled: September 11, 2012Publication date: March 14, 2013Applicant: SAUDI ARABIAN OIL COMPANYInventors: Md. Amanullah, Mohammed K. Al-Arfaj
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Publication number: 20130065130Abstract: An electrode (110) is provided that may be used in an electrochemical device (100) such as an energy storage/discharge device, e.g., a lithium-ion battery, or an electrochromic device, e.g., a smart window. Hydrothermal techniques and vacuum filtration methods were applied to fabricate the electrode (110). The electrode (110) includes an active portion (140) that is made up of electrochemically active nanoparticles, with one embodiment utilizing 3d-transition metal oxides to provide the electrochemical capacity of the electrode (110). The active material (140) may include other electrochemical materials, such as silicon, tin, lithium manganese oxide, and lithium iron phosphate.Type: ApplicationFiled: November 8, 2012Publication date: March 14, 2013Applicant: ALLIANCE FOR SUSTAINABLE ENERGY, LLCInventor: ALLIANCE FOR SUSTAINABLE ENERGY, LLC
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Publication number: 20130062211Abstract: A gas sensing device (nanosensor) includes a substrate with at least a pair of conductive electrodes spaced apart by a gap, and an electrochemically functionalized semiconductive nanomaterial bridging the gap between the electrodes to form a nanostructure network. The nanomaterial may be single-walled carbon nanotubes (SWNTs) functionalized by the deposition of nanoparticles selected from the group consisting of an elemental metal (e.g., gold or palladium), a doped polymer (e.g., camphor-sulfonic acid doped polyaniline), and a metal oxide (e.g. tin oxide). Depending on the nanoparticles employed in the functionalization, the nanosensor may be used to detect a selected gas, such as hydrogen. mercury vapor, hydrogen sulfide, nitrogen dioxide, methane, water vapor, and/or ammonia, in a gaseous environment.Type: ApplicationFiled: November 8, 2012Publication date: March 14, 2013Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventor: The Regents Of The University Of California
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Publication number: 20130059124Abstract: An R-cut substrate is prepared by cutting lumbered synthetic quartz crystal along a surface parallel to the R-face. The surface of the thus obtained R-cut substrate has a structure in which the R-face smoothest in terms of the crystal structure accounts for the most part of the surface, and the m- and r-faces are exposed on this surface to extend in a direction parallel to the X-axis albeit only slightly upon processing. After catalytic metals are arranged on the surface of the R-cut substrate, a carbon source gas is supplied onto the surface of the R-cut substrate to grow carbon nanotubes in accordance with the crystal lattice structure using the crystal metals as nuclei. This makes it possible to manufacture carbon nanotubes with a good orientation and linearity.Type: ApplicationFiled: March 1, 2011Publication date: March 7, 2013Inventors: Shigeo Maruyama, Shohei Chiashi, Hiroto Okabe, Masami Terasawa, Shuichi Kono, Tadashi Sato
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Publication number: 20130059134Abstract: A method of conductively coupling a carbon nanostructure and a metal electrode is provided that includes disposing a carbon nanostructure on a substrate, depositing a carbon-containing layer on the carbon nanostructure, according to one embodiment, and depositing a metal electrode on the carbon-containing layer. Further provided is a conductively coupled carbon nanostructure device that includes a carbon nanostructure disposed on a substrate, a carbon-containing layer disposed on the carbon nanostructure and a metal electrode disposed on the carbon-containing layer, where a low resistance coupling between the carbon nanaostructure and metal elements is provided.Type: ApplicationFiled: September 7, 2011Publication date: March 7, 2013Inventors: Yang Chai, Arash Hazeghi, Kuniharu Takei, Ali Javey, H.S. Philip Wong
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Publication number: 20130058984Abstract: The present invention includes single-walled carbon nanotube compositions for the delivery of siRNA and methods of making such single-walled carbon nanotube compositions. A single-walled carbon nanotube composition for delivery of siRNA includes a nonfunctionalized single-walled carbon nanotube; and siRNA noncovalently complexed with the nonfunctionalized single-walled carbon nanotube, wherein the siRNA solubilizes such nonfunctionalized single-walled carbon nanotube.Type: ApplicationFiled: August 7, 2012Publication date: March 7, 2013Applicant: WILLIAM MARSH RICE UNIVERSITYInventors: Garth Powis, Jeffrey Bartholomeusz, James Tour, Howard Schmidt, Paul Cherukuri, R. Bruce Weisman
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Publication number: 20130059085Abstract: 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: October 30, 2012Publication date: March 7, 2013Applicant: XEROX CORPORATIONInventor: Xerox Corporation
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Publication number: 20130059203Abstract: Provided are an anode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery including same. An anode active material for a lithium secondary battery according to the present invention includes: active particles by means of which lithium ions may be absorbed/released; and a coating layer coated on the surface of the active particles, wherein the coating layer includes a first material which is a hollow nanofiber and a second material which is a carbon precursor or LTO.Type: ApplicationFiled: May 11, 2011Publication date: March 7, 2013Applicant: ROUTE JJ CO., LTD.Inventors: Ji Jun Hong, Ki Taek Byun, Hyo Won Kim
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Publication number: 20130048949Abstract: Disclosed are thin film transistor devices incorporating a thin film semiconductor derived from carbonaceous nanomaterials and a dielectric layer composed of an organic-inorganic hybrid self-assembled multilayer.Type: ApplicationFiled: May 21, 2012Publication date: February 28, 2013Inventors: Yu Xia, He Yan, Antonio Facchetti