Surface Modifications (e.g., Functionalization, Coating, Etc.) Patents (Class 977/847)
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Publication number: 20110294672Abstract: The invention relates to platinum complexes, to a method for preparing the same and to the use thereof for the chemical vapour deposition of metal platinum. The chemical vapour deposition of platinum onto a substrate is made from a platinum organometallic compound that includes a ligand with a cyclic structure including at least two non-adjacent C?C double bonds, and the platinum organometallic compound has a square-plane structure in which the platinum is bonded to each of the C?C double bonds of the ligand, thereby forming a (C?C)—Pt—(C?C) of 60° to 70°.Type: ApplicationFiled: January 8, 2010Publication date: December 1, 2011Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Pascal Doppelt, Cyril Thurier
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Patent number: 8057686Abstract: A nanotube separation method includes depositing a tag on a nanotube in a nanotube mixture. The nanotube has a defect and the tag deposits at the defect where a deposition rate is greater than on another nanotube in the mixture lacking the defect. The method includes removing the tagged nanotube from the mixture by using the tag. As one option, the tag may contain a ferromagnetic material and the removing may include applying a magnetic field. As another option, the tag may contain an ionic material and the removing may include applying an electric field. As a further option, the tag may contain an atom having an atomic mass greater than the atomic mass of carbon and the removing may include applying a centrifugal force to the nanotube mixture. Any two or more of the indicated removal techniques may be combined.Type: GrantFiled: March 2, 2007Date of Patent: November 15, 2011Assignee: Micron Technology, Inc.Inventor: Gurtej S. Sandhu
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Publication number: 20110265918Abstract: The present invention provides a graphene-coated member of a novel structure, and a process for producing such graphene-coated members. A graphene-coated member according to a first invention is a graphene-coated member that has a graphene film on a surface of a metallic base of a desired shape. The base includes carbon in a solid-solution state, and the graphene film is formed from solid-solution carbon precipitated at the base surface.Type: ApplicationFiled: October 7, 2009Publication date: November 3, 2011Inventors: Daisuke Fujita, Keisuke Sagisaka, Keiko Onishi
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Publication number: 20110268647Abstract: Two-dimensional nanomaterials are produced in a process comprising the steps of (a) providing (a1) a mixture comprising graphene oxide particles, water and at least one cationic surfactant and/or nonionic surfactant or (a2) a mixture comprising graphene particles, at least one solvent useful for solution exfoliation of graphite and at least one cationic surfactant and/or nonionic surfactant, (b) adding at least one sol precursor compound to the mixture from step (a), (c) reacting the mixture from step (b) in a sol/gel process to form gel from the at least one sol precursor compound on the graphene oxide particles or, respectively, the graphene particles, (d) removing the at least one surfactant, and (e) optionally heating the gel-coated graphene oxide particles for at least 1 min to at least 500° C. under inert gas atmosphere to reduce the graphene oxide to graphene.Type: ApplicationFiled: April 21, 2011Publication date: November 3, 2011Applicants: Max-Planck-Gesellschaft zur Foerd. der Wisse. e.V., BASF SEInventors: Sorin IVANOVICI, Shubin YANG, Xinliang FENG, Klaus MÜLLEN
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Publication number: 20110266493Abstract: The method of forming encapsulated carbon nanotubes includes first forming a calcium chloride solution and a sodium hydrogen carbonate solution. A volume of carbon nanotubes are added to the calcium chloride solution and the calcium chloride solution and the volume of carbon nanotubes are then mixed with the sodium hydrogen carbonate solution to form a supersaturated calcium carbonate solution. Carbon nanotubes embedded in calcium carbonate crystals are precipitated from the supersaturated calcium carbonate solution. The carbon nanotubes embedded in the calcium carbonate crystals, forming the precipitate, are then filtered from the solution. The filtered carbon nanotubes embedded in the calcium carbonate crystals are washed and then dried, producing a usable volume of carbon nanotubes encapsulated within calcium carbonate crystals.Type: ApplicationFiled: May 3, 2010Publication date: November 3, 2011Inventors: Amjad Ashfaque Shaikh, Muataz Ali Atieh, Tahar Laoui
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Publication number: 20110268884Abstract: A first single-wall carbon nanotube can be electrically coupled to a first electrode, and a second single-wall carbon nanotube electrically coupled to a second electrode. In an example, the first and second single-wall carbon nanotubes are laterally separated by a nanoscale gap, such as sized and shaped for insertion of a single molecule.Type: ApplicationFiled: May 2, 2011Publication date: November 3, 2011Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Samuel Jonas Wind, Jinyao Tang, James C. Hone, Yuyao Shan
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Publication number: 20110262729Abstract: This disclosure provides articles that include functionalized nanoscale fibers and methods for functionalizing nanoscale fibers. The functionalized nanoscale fibers may be made by oxidizing a network of nanoscale fibers, grafting one or more molecules or polymers to the oxidized nanoscale fibers, and cross-linking at least a portion of the molecules or polymers grafted to the oxidized nanoscale fibers. The functionalized nanoscale fibers may be used to make articles.Type: ApplicationFiled: March 10, 2011Publication date: October 27, 2011Applicant: Florida State University Research FoundationInventors: I-Wen Chen, Zhiyong Liang, Ben Wang, Chun Zhang
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Patent number: 8038908Abstract: An aggregate of carbon nanotubes satisfying all of the following requirements (1) to (3): (1) the volume resistivity is from 1×10?5 ?·cm to 5×10?3 ?·cm; (2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and (3) the weight loss from 200° C. to 400° C. in thermogravimetry at a temperature rise of 10° C/min is from 5% to 20%.Type: GrantFiled: August 19, 2008Date of Patent: October 18, 2011Assignee: TORAY Industries, Inc.Inventors: Takayoshi Hirai, Hidekazu Nishino, Kenichi Sato, Naoyo Okamoto
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Patent number: 8034448Abstract: Fibrous composite comprising a plurality of carbon nanotubes; and a silica-containing moiety having one of the structures: (SiO)3Si—(CH2)n—NR1R2) or (SiO)3Si—(CH2)n—NCO; where n is from 1 to 6, and R1 and R2 are each independently H, CH3, or C2H5.Type: GrantFiled: August 19, 2008Date of Patent: October 11, 2011Assignee: Los Alamos National Security, LLCInventors: Huisheng Peng, Yuntian Theodore Zhu, Dean E. Peterson, Quanxi Jia
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Publication number: 20110223480Abstract: The present invention refers to a nanostructured material comprising nanoparticles bound to its surface. The nanostructured material comprises nanoparticles which are bound to the surface, wherein the nanoparticles have a maximal dimension of about 20 nm. Furthermore, the nanostructured material comprises pores having a maximal dimension of between about 2 nm to about 5 ?m. The nanoparticles bound on the surface of the nanostructured material are noble metal nanoparticles or metal oxide nanoparticles or mixtures thereof. The present invention also refers to a method of their manufacture and the use of these materials as electrode material.Type: ApplicationFiled: September 7, 2009Publication date: September 15, 2011Inventors: Tsyh Ying Grace Wee, Nopphawan Phonthammachai, Madhavi Srinivasan, Subodh Mhaisalkar, Yin Chiang Freddy Boey
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Publication number: 20110212297Abstract: This is provided a hydrophobic or superhydrophobic surface configuration and method of forming a hydrophobic or superhydrophobic material on a metallic substrate. The surface configuration comprises a metallic substrate having a carbon nanotube/carbon fibers configuration grown thereon, with the carbon nanotubes/carbon fibers configuration having a heirarchial structure formed to have a predetermined roughness in association with the surface. The method comprises providing a metallic substrate having a predetermined configuration, and growing a plurality of carbon nanotubes/fibers or other nanostructures formed into a predetermined architecture supported on the substrate.Type: ApplicationFiled: November 13, 2009Publication date: September 1, 2011Applicant: THE UNIVERSITY OF AKRONInventors: Ali Dhinojwala, Sunny Sethi
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Publication number: 20110206932Abstract: A carbon nanotube (CNT) is provided having micropores with a diameter of 1 to 10 nm in the side wall and in turn, having a large specific surface area. A production method of a surface-modified CNT (DMWCNT), comprises heating CNT having supported on the surface thereof a metal oxide or metal nitrate fine particle at a temperature of 100 to 1000° C., such as, 200 to 500° C., in an atmosphere containing oxygen. A cyclical solid phase oxidation-reduction reaction between the metal oxide and CNT occurs on the surface of the metal oxide fine particle supported on CNT, and carbon of CNT is oxidized to open a micropore. The metal oxide is preferably cobalt oxide, and the metal nitrate is preferably cobalt nitrate.Type: ApplicationFiled: October 22, 2010Publication date: August 25, 2011Applicants: SHOWA DENKO K.K., TOKYO INSTITUTE OF TECHNOLOGYInventors: Keiko Waki, Do-Hyun Kim, Masashi Takano
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Patent number: 8003979Abstract: The present invention relates to a method of preparing a carbon nanotube-quantum dot conjugate having a high density of quantum dots (QDs) on its surface. This method involves providing a plurality of semiconductor quantum dots and providing a thiol-functionalized carbon nanotube having a plurality of terminal thiol groups on its surface. The plurality of semiconductor quantum dots are attached to the surface of the carbon nanotube under conditions effective to yield a carbon nanotube-quantum dot conjugate having a high density of quantum dots on its surface. The present invention also relates to a carbon nanotube-quantum dot conjugate having a high density of quantum dots on its surface. The present invention further relates to a photodetector device. This device includes a substrate and a nanocomposite layer. The nanocomposite layer includes a plurality of the carbon nanotube-quantum dot conjugates previously described.Type: GrantFiled: February 12, 2007Date of Patent: August 23, 2011Assignee: The Research Foundation of State University of New YorkInventors: Namchul Cho, Kaushik Roy Choudhury, Yudhisthira Sahoo, Kwang Sup Lee, Paras N. Prasad
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Patent number: 8003453Abstract: A complementary metal oxide semiconductor (CMOS) device, e.g., a field effect transistor (FET), that includes at least one one-dimensional nanostructure that is typically a carbon-based nanomaterial, as the device channel, and a metal carbide contact that is self-aligned with the gate region of the device is described. The present invention also provides a method of fabricating such a CMOS device.Type: GrantFiled: May 22, 2008Date of Patent: August 23, 2011Assignee: International Business Machines CorporationInventors: Phaedon Avouris, Roy A. Carruthers, Jia Chen, Christopher G. M. M. Detavernier, Christian Lavoie, Hon-Sum Philip Wong
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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: 20110201834Abstract: The present invention relates to substances which can be applied to the technical fields of gas storages, polymerization catalysts and optical isomers, their intermediates, and processes for preparing the same, which is characterized in that 1) possible disintegration of structure of the scaffold material (SM) is impeded, and 2) they are prepared by a simple manufacturing system as compared to the substances conventionally suggested in the application field. Specifically, it relates to scaffold material-transition metal hydride complexes comprised of scaffold material (SM) and transition metal hydride (M1H(n-1)) which is chemically bonded to the functional groups formed on the scaffold material, SM-transition metal halide complex and SM-transition metal ligand complex as the precursors, and a process for preparing the same. The SM-transition metal hydride complex according to the present invention is a substance for hydrogen storage which adsorbs hydrogen via Kubas adsorption.Type: ApplicationFiled: January 22, 2010Publication date: August 18, 2011Applicant: HANWHA CHEMICAL CORPORATIONInventors: Jong Sik Kim, Dong Wook Kim, Dong Ok Kim, Gui Ryong Ahn, Jeasung Park, Hyo Jin Jeon, Jisoon Ihm, Moon-Hyun Cha
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Publication number: 20110189564Abstract: A fuel cell comprises an anode, a cathode, and a proton exchange membrane. The anode and cathode can include a catalyst layer which includes a plurality of generally aligned carbon nanotubes. Methods of making a fuel cell are also disclosed.Type: ApplicationFiled: January 28, 2011Publication date: August 4, 2011Inventors: Benjamin N. Eldridge, John K. Gritters, Onnik Yaglioglu
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Publication number: 20110186775Abstract: Carbon nanotube-infused fiber materials containing substantially parallel-aligned, infused carbon nanotubes are described herein. The carbon nanotube-infused fiber materials contain a fiber material and a layer of carbon nanotubes infused to the fiber material, where the infused carbon nanotubes are aligned substantially parallel to the longitudinal axis of the fiber material and at least a portion of the substantially parallel-aligned, infused carbon nanotubes are crosslinked to each other, to the fiber material, or both. Crosslinking can occur through covalent bonding or pi-stacking interactions, for example. The carbon nanotube-infused fiber materials can further contain additional carbon nanotubes that are grown on the layer of substantially parallel-aligned, infused carbon nanotubes. Composite materials containing the carbon nanotube-infused fiber materials and methods for production of the carbon nanotube-infused fiber materials are also described herein.Type: ApplicationFiled: February 1, 2011Publication date: August 4, 2011Applicant: APPLIED NANOSTRUCTURED SOLUTIONS, LLC.Inventors: Tushar K. SHAH, Harry C. Malecki, Brandon K. Malet, Robert D. Hoskins, Jigar M. Patel
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Publication number: 20110180968Abstract: A method for making a carbon nanotube metal composite includes the following steps. A number of carbon nanotubes is dispersed in a solvent to obtain a suspension. Metal powder is added into the suspension, and then the suspension agitated. The suspension containing the metal powder is allowed to stand for a while. The solvent is reduced to obtain a mixture of the number of carbon nanotubes and the metal powder.Type: ApplicationFiled: October 15, 2010Publication date: July 28, 2011Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHUN-HUA HU, CHANG-HONG LIU, SHOU-SHAN FAN
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Publication number: 20110171097Abstract: The present invention relates to fullerene-silica nanoparticles with improved fluorescence, a preparation method of the fullerene-silica nanoparticles, and use thereof. More specifically, the present invention relates to fullerene-silica nanoparticles with improved fluorescence in which fullerene and silica are covalently linked, a preparation method of the fullerene-silica nanoparticles, and use thereof. The preparation method of the fullerene-silica nanoparticles comprises the steps of: adding a surfactant to a non-polar organic solvent and a polar solvent and stirring them to form reverse micelles (step 1); adding fullerene to the reverse micelles formed in the step 1 and stirring them (step 2); and adding a silica precursor and a catalyst to a reaction solution containing the fullerene prepared in the step 2 and stirring them to prepare fullerene-silica nanoparticles (step 3).Type: ApplicationFiled: January 6, 2009Publication date: July 14, 2011Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGYInventors: Bong Hyun Chung, Jinyoung Jeong, Nam Woong Song
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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: 20110160046Abstract: A carbon nanotube film is disclosed which includes a plurality of macroscopically aligned carbon nanotubes, and a plurality of nanoparticles which are adhered to the surfaces of the carbon nanotubes. A method for constructing a carbon nanotube film is also disclosed. This method includes multiple steps. First, a plurality of macroscopically aligned carbon nanotubes are formed on a substrate. Next, a solution including a dispersion of nanoparticles in a solvent is applied onto the carbon nanotubes. Then, the solvent is evaporated so that the nanoparticles remain and are adhered to the carbon nanotubes.Type: ApplicationFiled: March 3, 2011Publication date: June 30, 2011Inventor: Kangning LIANG
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Patent number: 7968073Abstract: Methods of producing stable dispersions of single-walled carbon nanotube structures in solutions are achieved utilizing dispersal agents. The dispersal agents are effective in substantially solubilizing and dispersing single-walled carbon nanotube structures in aqueous solutions by coating the structures and increasing the surface interaction between the structures and water. Exemplary agents suitable for dispersing nanotube structures in aqueous solutions include synthetic and natural detergents having high surfactant properties, deoxycholates, cyclodextrins, chaotropic salts and ion pairing agents. The dispersed nanotube structures may further be deposited on a suitable surface in isolated and individualized form to facilitate easy characterization and further processing of the structures.Type: GrantFiled: November 2, 2004Date of Patent: June 28, 2011Assignee: Battelle Memorial InstituteInventors: Mark S. F. Clarke, Daniel L. Feeback
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Publication number: 20110152553Abstract: A carbon nanotube (CNT) composite of which one or more specific functional groups are bonded to surface of a CNT, and a method of preparing a CNT composite are provided. The method includes the steps of introducing an acylhalide group to surface of a CNT, and causing a reaction of the acylhalide group with a polysiloxane having amine groups so as to prepare a CNT composite of which the polysiloxane is bonded to the surface by the medium of an amide group. The CNT composite can fix metal particles uniformly and densely thereon, can have improved mechanical and electrical properties, and can be applied to various industrial fields.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Jong Hwa KWON, Ho Gyu Yoon, Kwang Se Lee
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Patent number: 7964447Abstract: A carbon nanotube (CNT) array is patterned on a substrate. The substrate can be a microelectronic die or a heat sink for a die. The patterned CNT array is patterned by using a patterned catalyst on the substrate to form the CNT array by growing. The patterned CNT array can also be patterned by using a patterned mask on the substrate to form the CNT array by growing. A computing system that uses the CNT array for heat transfer from the die is also used.Type: GrantFiled: May 8, 2009Date of Patent: June 21, 2011Assignee: Intel CorporationInventors: Gregory M. Chrysler, Thomas S. Dory, James G. Maveety, Edward Prack, Unnikrishnan Vadakkanmaruveedu
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Patent number: 7955585Abstract: Separation of carbon nanotubes or fullerenes according to diameter through non-covalent pi-pi interaction with molecular clips is provided. Molecular clips are prepared by Diels-Alder reaction of polyacenes with a variety of dienophiles. The pi-pi complexes of carbon nanotubes with molecular clips are also used for selective placement of carbon nanotubes and fullerenes on substrates.Type: GrantFiled: May 14, 2010Date of Patent: June 7, 2011Assignee: International Business Machines CorporationInventors: Ali Afzali-Ardakani, Cherie R. Kagan, Rudolf Tromp
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Publication number: 20110128623Abstract: A method for manufacturing a polarizer utilizes a support, which is coated with a photoresist. A carbon nanotube film is located over the photoresist, and one portion of the carbon nanotube film is submerged in the photoresist. Metal or semi-metallic particles are deposited over the carbon nanotube film and the photoresist, which is removed. The carbon nanotube film with the metal particles or semi-metallic particles is adhered to a substrate to obtain the polarizer.Type: ApplicationFiled: May 16, 2010Publication date: June 2, 2011Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: SEI-PING LOUH
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Publication number: 20110124040Abstract: A fixative for biological tissue made up of polymerized carbon nanotubes encapsulating osmium nanoparticles and its method of synthesis are disclosed. Carbon nanotubes are first oxidized. Next, the oxidized carbon nanotubes and monohydrated citric acid are mixed to synthesize carbon nanotubes grafted with poly(citric acid). The carbon nanotubes grafted with poly(citric acid) are then mixed with an osmium source to synthesize carbon nanotubes grafted with poly(citric acid) encapsulating osmium nanoparticles. The nano-fixative of this application has been shown to improve fixation of biological tissue relative to well-known fixatives.Type: ApplicationFiled: January 31, 2011Publication date: May 26, 2011Inventors: Nahid Sarlak, Mostafa Karimi
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Patent number: 7947581Abstract: Processes for forming full graphene wafers on silicon or silicon-on-insulator substrates. The processes comprise formation of a metal carbide layer on the substrate and annealing of the metal carbide layer under high vacuum. For volatile metals, this annealing step results in volatilization of the metal species of the metal carbide layer and reformation of the carbon atoms into the desired graphene wafer. Alternatively, for non-volatile metals, the annealing step results in migration of the metal in the metal carbide layer to the top surface of the layer, thereby forming a metal rich top layer. The desired graphene layer is formed by the carbon atoms left at the interface with the metal rich top layer. The thickness of the graphene layer is controlled by the thickness of the metal carbide layer and by solid phase reactions.Type: GrantFiled: August 10, 2009Date of Patent: May 24, 2011Assignee: Linde AktiengesellschaftInventor: Ce Ma
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Publication number: 20110111227Abstract: A method is provided for producing germanium nanowires encapsulated within multi-walled carbon nanotubes. The method includes the steps of performing chemical vapor deposition using a combined germanium and carbon source having a general formula of GeR(4-x)Lx, where x=0, 1, 2, or 3; R is selected from a group consisting of alkyl, cycloalkyl or aryl and L=hydrogen, halide or alkoxide and growing germanium nanowires encapsulated within multi-walled carbon nanotubes on a substrate. A reaction product of that method or process is also provided.Type: ApplicationFiled: November 9, 2010Publication date: May 12, 2011Inventors: Mark Crocker, Rodney Andrews, A. Pandurangan, Dali Qian
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Publication number: 20110112287Abstract: A method for covalently binding target molecules to carbon nanoparticles via at least one bridge molecule includes converting carbon nanoparticles to acyl carbon nanoparticles using a carbonyl compound of the at least one bridge molecule in the presence of a Lewis acid under Friedel-Crafts conditionsm, where the acyl carbon nanoparticles include a nucleofuge in the omega position. The target molecule is covalently bound to the acyl carbon nanoparticles via nucleophilic substitution of the nucleofuge in the omega position.Type: ApplicationFiled: October 27, 2010Publication date: May 12, 2011Applicant: KARLSRUHER INSTITUT FUER TECHNOLOGIEInventors: Teodor Silviu Balaban, Stefanie Potratz, Frank Hennrich, Regina Fischer, Michaela Carmen Balaban, Manfred Kappes
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Publication number: 20110109006Abstract: A method for making a carbon nanotube film is provided. First, a carbon nanotube array is formed on a grown substrate. The carbon nanotube array is pressed with a first substrate using a first pressing force to form a carbon nanotube film precursor. Then the first substrate and the grown substrate are separated, and the carbon nanotube film precursor is transferred onto the first substrate. After that, the carbon nanotube film precursor is pressed using a second substrate with a second pressing force. Lastly, the first substrate and the second substrate is separated, with part of the carbon nanotube precursor transferred to the second substrate to form the carbon nanotube film.Type: ApplicationFiled: July 21, 2010Publication date: May 12, 2011Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: GANG ZHENG, QUN-QING LI, JING XIE, SHOU-SHAN FAN
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Patent number: 7939047Abstract: The present invention is directed to methods of separating carbon nanotubes (CNTs) by their electronic type (e.g., metallic, semi-metallic, and semiconducting). Perhaps most generally, in some embodiments, the present invention is directed to methods of separating CNTs by bandgap, wherein such separation is effected by interacting the CNTs with a surface such that the surface interacts differentially with the CNTs on the basis of their bandgap, or lack thereof. In some embodiments, such methods can allow for such separations to be carried out in bulk quantities.Type: GrantFiled: July 27, 2005Date of Patent: May 10, 2011Assignee: William Marsh Rice UniversityInventors: James M. Tour, Christopher A. Dyke, Austen K. Flatt
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Patent number: 7939136Abstract: The formation of arrays of fullerene nanotubes is described. A microscopic molecular array of fullerene nanotubes is formed by assembling subarrays of up to 106 fullerene nanotubes into a composite array.Type: GrantFiled: August 22, 2006Date of Patent: May 10, 2011Assignee: William Marsh Rice UniversityInventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
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Patent number: 7938987Abstract: This invention relates generally to organized assemblies of carbon and non-carbon compounds and methods of making such organized structures. In preferred embodiments, the organized structures of the instant invention take the form of nanorods or their aggregate forms. More preferably, a nanorod is made up of a carbon nanotube filled, coated, or both filled and coated by a non-carbon material. This invention is further drawn to the separation of single-wall carbon nanotubes. In particular, it relates to the separation of semiconducting single-wall carbon nanotubes from conducting (or metallic) single-wall carbon nanotubes. It also relates to the separation of single-wall carbon nanotubes according to their chirality and/or diameter.Type: GrantFiled: April 27, 2007Date of Patent: May 10, 2011Assignee: Yazaki CorporationInventors: Leonid Grigorian, Steven G. Colbern, Alex E. Moser, Robert L. Gump, Daniel A. Niebauer, Sean Imtiaz Brahim
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Patent number: 7935767Abstract: Novel multiblock polymers are prepared and used to disperse carbon nanotubes in solution.Type: GrantFiled: December 6, 2007Date of Patent: May 3, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Bruce A. Diner, Lech Wilczek
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Patent number: 7931885Abstract: A method of fabricating carbon nanotube complex is disclosed, which comprises, (A) dispersing carbon nanotubes in a solvent; (B) adding a filler to the above solution to give a precursor solution; (C) performing light illumination on the precursor solution; (D) washing the solution after light exposure; and (E) drying to evaporate the solvent contained in the solution. Therefore, the carbon nanotube complex of the present invention is obtained.Type: GrantFiled: March 19, 2009Date of Patent: April 26, 2011Assignees: Tatung University, Tatung CompanyInventors: Hong-Ming Lin, Wei-Syuan Lin, Wei-Jen Liu, Cheng-Han Chen
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Publication number: 20110088829Abstract: A method for manufacturing a field emission cathode is provided. A carbon nanotube array formed on a substrate in a container and a prepolymer are provided. The prepolymer is put into the container settled for a period of over 30 minutes to fill in clearances of the carbon nanotube array, and part of the prepolymer is covering a top end of the carbon nanotube array. The carbon nanotube array is rotated at a speed to push the part of the prepolymer into the clearances of the carbon nanotube array and a prepolymer film in the carbon nanotube array is obtained. The prepolymer film is then polymerized to form a polymer film.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHANG-HONG LIU, SHOU-SHAN FAN
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Publication number: 20110086176Abstract: Provided are a method of doping carbon nanotubes, p-doped carbon nanotubes prepared using the method, and an electrode, a display device or a solar cell including the carbon nanotubes.Type: ApplicationFiled: October 7, 2010Publication date: April 14, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seon-mi YOON, Seong-jae CHOI, Hyeon-jin SHIN, Jae-young CHOI, Sung-jin KIM, Young-hee LEE
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Publication number: 20110083737Abstract: With a view to realizing a titanium oxide composite that has a large surface area and that enables efficient transfer of electrons by covering a surface of rod-like or fibrous carbon with a covering layer comprising titanium oxide particles connected to one another, an object of the invention is to develop a material useful as an active material for dye-sensitized solar cells, and a process for producing the material; a porous titanium oxide-covered carbon material composition, and a process for producing the composition; and a photoelectric conversion element comprising the titanium oxide-covered carbon material or porous titanium oxide-covered carbon material composition.Type: ApplicationFiled: June 19, 2009Publication date: April 14, 2011Applicant: OSAKA GAS CO., LTD.Inventors: Hitoshi Nishino, Ryoichi Nishida, Hiroaki Matsuyoshi, Hiroki Sakamoto, Haruo Tomita, Hidekazu Hayama, Minoru Tabuchi, Nobuko Ichimura, Tomoe Deguchi
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Publication number: 20110086987Abstract: A polymerizable ligand comprising, in one embodiment, a polyaromatic compound, with a terminal functional group, non-covalently bonded to the sidewalls of carbon nanotubes. This structure preserves the structural, mechanical, electrical, and electromechanical properties of the CNTs and ensures that an unhindered functional group is available to bond with an extended polymer matrix thereby resulting in an improved polymer-nanotube composite.Type: ApplicationFiled: November 15, 2010Publication date: April 14, 2011Inventors: Jennifer L. Sample, Amy A. Hofstra
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Publication number: 20110081546Abstract: The present invention relates to a method for preparing a nano-composite comprising carbon nanotube and metal, more precisely a method for preparing a carbon nanotube-metal composite comprising the steps of preparing a dispersion solution by dispersing carbon nanotube in a reductive solvent; preparing a mixed solution by adding a stabilizer and a metal precursor; and reducing the metal precursor by heating the mixed solution, and a carbon nanotube-metal composite prepared by the same. The method of the present invention favors the production of a carbon nanotube-metal composite which is characterized by even metal particles from some nm to hundreds nm in size and even dispersion of those particles to be bound to carbon nanotube.Type: ApplicationFiled: September 26, 2008Publication date: April 7, 2011Applicant: Bioneer CorporationInventors: Jae Ha Kim, Kug Jin Yun, Myung Kuk Jin
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Patent number: 7915151Abstract: A bulk-doped semiconductor that is at least one of the following: a single crystal, an elongated and bulk-doped semiconductor that, at any point along its longitudinal axis, has a largest cross-sectional dimension less than 500 nanometers, and a free-standing and bulk-doped semiconductor with at least one portion having a smallest width of less than 500 nanometers. At least one portion of such a semiconductor may a smallest width of less than 200 nanometers, or less than 150 nanometers, or less than 100 nanometers, or less than 80 nanometers, or less than 70 nanometers, or less than 60 nanometers, or less than 40 nanometers, or less than 20 nanometers, or less than 10 nanometers, or even less than 5 nanometers. Such a semiconductor may be doped during growth. Such a semiconductor may be part of a device, which may include any of a variety of devices and combinations thereof, and a variety of assembling techniques may be used to fabricate devices from such a semiconductor.Type: GrantFiled: October 4, 2006Date of Patent: March 29, 2011Assignee: President and Fellows of Harvard CollegeInventors: Charles M. Lieber, Yi Cui, Xiangfeng Duan, Yu Huang
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Publication number: 20110068290Abstract: Compounds, compositions, systems and methods for the chemical and electrochemical modification of the electronic structure of graphene and especially epitaxial graphene (EG) are presented. Beneficially, such systems and methods allow the large-scale fabrication of electronic EG devices. Vigorous oxidative conditions may allow substantially complete removal of the EG carbon atoms and the generation of insulating regions; such processing is equivalent to that which is currently used in the semiconductor industry to lithographically etch or oxidize silicon and thereby define the physical features and electronic structure of the devices. However graphene offers an excellent opportunity for controlled modification of the hybridization of the carbon atoms from sp2 to sp3 states by chemical addition of organic functional groups.Type: ApplicationFiled: May 29, 2009Publication date: March 24, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Robert C. Haddon, Mikhail E. Itkis, Palanisamy Ramesh, Elena Bekyarova, Sakhrat Khizroev, Jeongmin Hong
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Publication number: 20110060162Abstract: Included are a nano-carbon material production unit for producing a nano-carbon material using a fluidized catalyst formed by granulating a carrier supporting an active component, an acid treatment unit for dissolving and separating a catalyst by an acid solution by feeding a catalyst-containing nano-carbon material into the acid solution, and a pH adjustment unit, which is an anti-agglomeration treatment unit, provided on a downstream side of the acid treatment unit, for performing an anti-agglomeration treatment to prevent agglomeration among nano-carbons due to repulsion caused by dissociation among oxygen-containing functional groups added to the nano-carbon material.Type: ApplicationFiled: May 28, 2009Publication date: March 10, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kiyoshi Tatsuhara, Tomoaki Sugiyama, Atsushi Tanaka, Toshihiko Setoguchi
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Publication number: 20110052805Abstract: The invention relates to a method and a system for depositing a metal or a metalloid on carbon nanotubes (NTC). The method of the invention comprises homogenising an NTC powder in a reactor, and depositing said metal or metalloid on the homogenised NTC powder using a chemical vapor deposition technique implemented inside the reactor from a precursor comprising an alkyl of said metal or metalloid. The method can be used for the production of nanostructured SiC at the surface of the NTC by Si deposition on said NTC.Type: ApplicationFiled: February 20, 2009Publication date: March 3, 2011Applicant: Arkema FranceInventors: Serge Bordere, Daniel Cochard, Eric Dutilh, Patrice Gaillard, Damien Voiry
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Publication number: 20110053050Abstract: The present invention relates to a method of functionalizing a carbon material. A carbon material is contacted with a carboxylic acid, whereby a mixture is formed. The mixture is heated for a suitable period of time at a temperature below the thermal decomposition temperature of the carbon material.Type: ApplicationFiled: October 18, 2007Publication date: March 3, 2011Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: San Hua Lim, Chee Kok Poh, Jianyi Lin
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Patent number: 7892517Abstract: Methods for the chemical modification of carbon nanotubes involve the derivatization of multi- and single-wall carbon nanotubes, including small diameter (ca. 0.7 nm) single-wall carbon nanotubes, with diazonium species. The method allows the chemical attachment of a variety of organic compounds to the side and ends of carbon nanotubes. These chemically modified nanotubes have applications in polymer composite materials, molecular electronic applications, and sensor devices. The methods of derivatization include electrochemical induced reactions, thermally induced reactions, and photochemically induced reactions. Moreover, when modified with suitable chemical groups, the derivatized nanotubes are chemically compatible with a polymer matrix, allowing transfer of the properties of the nanotubes (such as, mechanical strength or electrical conductivity) to the properties of the composite material as a whole.Type: GrantFiled: August 17, 2007Date of Patent: February 22, 2011Assignee: William Marsh UniversityInventors: James M. Tour, Jeffrey L. Bahr, Jiping Yang
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Publication number: 20110038794Abstract: The present invention relates to a method of radiolabelling carbon nanotubes, to the radiolabelled carbon nanotubes that can be obtained by implementing this method, and to applications thereof.Type: ApplicationFiled: November 6, 2008Publication date: February 17, 2011Applicant: Commissariat ! L'Energie Atomique Et Aux Engeries AlternativesInventors: Frederic Taran, Dominique Georgin
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Patent number: 7887773Abstract: A method for treating carbon nanotubes is provided. In the method for treating carbon nanotubes (CNTs), the CNTs are treated with SO3 gas at an elevated temperature, for example, at a temperature in the range of 385° C. to 475° C.Type: GrantFiled: November 13, 2008Date of Patent: February 15, 2011Assignee: Sony CorporationInventors: Hisashi Kajiura, Yongming Li, Hongliang Zhang, Yunqi Liu, Lingchao Cao, Xianglong Li, Dacheng Wei, Yu Wang, Dachuan Shi