Electrolytic Patents (Class 977/899)
  • Patent number: 8920739
    Abstract: Disclosed is a system or method of increased efficiency in carbon nanomaterial synthesis. In one embodiment, a system or method of automated collection of deposited carbon nanomaterial is disclosed. According to one or more embodiments, a method of automated collection of deposited nanomaterial may comprise using cleaner blades to clean the wall of a deposition chamber and the surface of a central body where carbon nanomaterial has been deposited. The method of automated carbon nanomaterial collection may be used in connection with a method of carbon nanomaterial synthesis, to create a more efficient synthesis process.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 30, 2014
    Assignee: King Abddulaziz City for Science and Technology
    Inventors: Turki Saud Mohammed Al-Saud, Mohammed A. Bin Hussain, Siarhei Alexandrovich Zhdanok, Andrei Vladimirovich Krauklis, Petr Petrovich Samtsou, Anatolij Ivanovich Loznikov
  • Publication number: 20140262810
    Abstract: The invention is directed to a method for producing metal-containing (e.g., non-oxide, oxide, or elemental) nano-objects, which may be nanoparticles or nanowires, the method comprising contacting an aqueous solution comprising a metal salt and water with an electrically powered electrode to form said metal-containing nano-objects dislodged from the electrode, wherein said electrode possesses a nanotextured surface that functions to confine the particle growth process to form said metal-containing nano-objects. The invention is also directed to the resulting metal-containing compositions as well as devices in which they are incorporated.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: UT-Battelle, LLC
    Inventors: Adam Justin Rondinone, Ilia N. Ivanov, Sean Campbell Smith, Chengdu Liang, Dale K. Hensley, Ji-Won Moon, Tommy Joe Phelps
  • Patent number: 8790502
    Abstract: A method of preparing titania nanotubes involves anodization of titanium in the presence of chloride ions and at low pH (1-7) in the absence of fluoride. The method leads to rapid production of titania nanotubes of about 25 nm diameter and high aspect ratio. The nanotubes can be organized into bundles and tightly packed parallel arrays. Inclusion of organic acids in the electrolyte solution leads to the incorporation into the nanotubes of up to 50 atom percent of carbon. In a two-stage method, a titanium anode is pre-patterned using a fluoride ion containing electrolyte and subsequently anodized in a chloride ion containing electrolyte to provide more evenly distributed nanotube arrays. The titania nanotubes have uses in composite materials, solar cells, hydrogen production, and as hydrogen sensors.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: July 29, 2014
    Assignee: Northeastern University
    Inventors: Christiaan Richter, Latika Menon, Ronald J. Willey
  • Patent number: 8771498
    Abstract: An electrochemical method for producing Si nanopowder, Si nanowires and/or Si nanotubes directly from compound SiX or a mixture containing a silicon compound SiX, the method comprises: providing an electrolysis cell having a cathode, an anode and an electrolyte, using the compound SiX or the mixture containing compound SiX as a cathode and immersing the cathode in an electrolyte comprising a metal compound molten salt, applying a potential between the cathode and the anode in the electrolysis cell, and forming one or more of Si nanopowder, Si nanowires and Si nanotubes on the cathode electrode. The method has advantages of: 1) shorter production processing, 2) inexpensive equipment, 3) convenient operation, 4) reduction of contaminate, 5) easily available feed materials, and 6) easy to achieve continuous production. This is a new field of using electrochemical method for producing one-dimensional Si nano material, and a new method of producing Si nanopowder, Si nanowires and Si nanotubes.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: July 8, 2014
    Assignee: General Research Institute for Nonferrous Metals
    Inventors: Shigang Lu, Juanyu Yang, Xiangjun Zhang, Surong Kan
  • Publication number: 20140158021
    Abstract: A method is provided for the electrochemical synthesis of selenium (Se) nanoparticles (NPs). The method forms a first solution including a Se containing material and a stabilizing first ligand, dissolved in a first solvent. The first solution is exposed to an electric field, and in response to the electric field, a second solution is formed with dispersed SeNPs. The Se containing material has either a nonzero or positive oxidation state. In one particular aspect, the first solution is formed by dissolving Se dioxide (SeO2) in water to form selenosis acid (H2SeO3).
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Inventors: Wei Pan, Sean Andrew Vail
  • Patent number: 8709127
    Abstract: Platinum particles have been formed as porous, hollow tubular dendrites by using silver dendrite particles in a galvanic replacement reaction conducted in an aqueous solution of a platinum compound. The dendritic platinum particles have been found useful as catalysts and particularly useful as a hydrogen-oxidation electrocatalyst and/or an oxygen-reduction catalyst in a polymer electrolyte membrane fuel cell.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: April 29, 2014
    Assignees: GM Global Technology Operations LLC, The University of Western Ontario
    Inventors: Mei Cai, Xueliang Sun, Gaixia Zhang, Shuhui Sun, Ruying Li
  • Publication number: 20140113218
    Abstract: Catalysts comprising porous metal nanoparticles, which are individually encapsulated with a reaction-enhancing material, and their use in fuel cell catalysis are provided.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jonah Daedalus Erlebacher, Joshua D. Snyder
  • Patent number: 8647821
    Abstract: Described are devices and methods for detecting binding on an electrode surface. In addition, devices and methods for electrochemically synthesizing polymers and devices and methods for synthesizing and detecting binding to the polymer on a common integrated device surface are described.
    Type: Grant
    Filed: December 22, 2012
    Date of Patent: February 11, 2014
    Assignee: Intel Corporation
    Inventors: Hernan A. Castro, Gordon D. Holt, Brandon C. Barnett, Handong Li, Narayanan Sundararajan, Wei Wang
  • Patent number: 8614086
    Abstract: Described are quality control methods and devices for the reproducible manufacturing and integrity monitoring of polymers on electrochemical synthesis and detection chips. The devices and methods allow for simultaneous manufacturing and synthesis of polymers.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 24, 2013
    Assignee: Intel Corporation
    Inventors: Gordon Holt, Ghadeer Antanius, Brandon Barnett
  • Publication number: 20130164208
    Abstract: Disclosed is a method of forming graphene. A graphite positive electrode (or positive electrode together with graphite material) wrapped in a semipermeable membrane and a negative electrode are dipped in an acidic electrolyte to conduct an electrolysis process. As such, a first graphene oxide having a size larger than a pore size of the semipermeable membrane is exfoliated from the graphite positive electrode (or the graphite material). The electrolysis process is continuously conducted until a second graphene oxide is exfoliated from the first graphene oxide, wherein the second graphene oxide has a size which is smaller than the pore size of the semipermeable membrane to penetrate through the semipermeable membrane. The second graphene oxide diffused into the acidic electrolyte outside of the semipermeable membrane is collected. Finally, the collected second graphene oxide is chemically reduced to obtain a graphene.
    Type: Application
    Filed: July 13, 2012
    Publication date: June 27, 2013
    Inventors: Yu-Tse HSIEH, Kun-Ping HUANG, Pang LIN
  • Publication number: 20130082425
    Abstract: The present invention relates to metal coated nano-fibres obtained by a process that includes electrospinning and to the use of said metal coated nano-fibres. The process is characterised in that a polymer nano-fibre with functional groups providing the binding ability to a reducing reagent is prepared by electrospinning at ambient conditions. Then this is contacted with a reducing agent, thereby opening the epoxy ring on the surface of polymer nano-fibre and replacing with the reducing agent and the reducing agent modified film is reacted with metal solution in alkaline media. Finally the electrospun mat is treated with water to open the epoxy rings in the structure and crosslinking the chains to provide integrity.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 4, 2013
    Applicant: SABANCI UNIVERSITESI
    Inventor: SABANCI UNIVERSITESI
  • Patent number: 8337673
    Abstract: The invention relates to the synthesis of silicon-containing nanoparticles by laser pyrolysis. For this purpose: a precursor (SiH4) containing the element silicon is conveyed, by a transport fluid (He), into a pyrolysis reactor (REAC); laser radiation (LAS) is applied, in the reactor, to a mixture that the transport fluid and the precursor form; and silicon-containing nanoparticles (nP) are recovered at the exit of the reactor. In particular, the power of the laser radiation is controlled. Furthermore, the effective pulse duration is controlled within a laser firing period. Typically, for a power greater than 500 watts and a pulse duration greater than 40% of a laser firing period, nanoparticles having a crystalline structure with a size of less than or of the order of one nanometer are obtained at a rate greater than or of the order of 80 milligrams per hour. Under optimum conditions, a record rate of greater than 740 milligrams per hour was able to be obtained.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: December 25, 2012
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Nathalie Herlin-Boime, Olivier Sublemontier, Frédéric Lacour
  • Patent number: 8317978
    Abstract: A method of fabricating a non-brittle, carbon nanopaper from single wall, multiwall, and combination thereof, from carbon nanotubes, using a vacuum deposition, high temperature annealing, and polystyrene polymer rinse process; which nanopaper can be nitrided by either a plasma-enhanced chemical vapor deposition (PECVD) process, or an by an electrochemical method, to obtain a useful chemically functionalized substrate, a substrate containing metastable N4, N8, and longer chain polymeric nitrogen clusters. Such nitrided carbon nanopaper can be used to enhance the ballistic performance of gun propellants, while reducing gun barrel wear and erosion thereof.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: November 27, 2012
    Inventors: Thelma G. Manning, Zafar Iqbal
  • Publication number: 20120222958
    Abstract: Disclosed are methods and devices for detection of ion migration and binding, utilizing a nanopipette adapted for use in an electrochemical sensing circuit. The nanopipette may be functionalized on its interior bore with metal chelators for binding and sensing metal ions or other specific binding molecules such as boronic acid for binding and sensing glucose. Such a functionalized nanopipette is comprised in an electrical sensor that detects when the nanopipette selectively and reversibly binds ions or small molecules. Also disclosed is a nanoreactor, comprising a nanopipette, for controlling precipitation in aqueous solutions by voltage-directed ion migration, wherein ions may be directed out of the interior bore by a repulsing charge in the bore.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 6, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Nader Pourmand, Boaz Vilozny, Paolo Actis, R. Adam Seger, Bakthan Singaram
  • Patent number: 8182574
    Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent: water).
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: May 22, 2012
    Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.
    Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
  • Publication number: 20120118751
    Abstract: An apparatus for detecting the presence of a target molecule is disclosed which includes a conductive nanostructure, a non-conductive polymer coating on at least a portion of the nanostructure, and a cavity formed in the polymer coating having a shape corresponding to the shape of the target molecule. A property of the nanostructure depends on the presence of the target molecule at the cavity.
    Type: Application
    Filed: February 3, 2010
    Publication date: May 17, 2012
    Inventors: Dong Cai, Thomas C. Chiles
  • Publication number: 20120091009
    Abstract: Provided is a method and apparatus for producing silver nanoparticles in uniform shape and size using an electrolysis eco-friendly and in a simple way.
    Type: Application
    Filed: June 14, 2010
    Publication date: April 19, 2012
    Applicant: AMOGREENTECH CO., LTD.
    Inventors: Min Young Choi, Byung Sun Han, Tae Gyun Kim, Yong Sul Song
  • Publication number: 20120085636
    Abstract: Disclosed is a system or method of increased efficiency in carbon nanomaterial synthesis. In one embodiment, a system or method of automated collection of deposited carbon nanomaterial is disclosed. According to one or more embodiments, a method of automated collection of deposited nanomaterial may comprise using cleaner blades to clean the wall of a deposition chamber and the surface of a central body where carbon nanomaterial has been deposited. The method of automated carbon nanomaterial collection may be used in connection with a method of carbon nanomaterial synthesis, to create a more efficient synthesis process.
    Type: Application
    Filed: June 6, 2011
    Publication date: April 12, 2012
    Applicant: King Abdulaziz City Science and Technology
    Inventors: Turki Saud Mohammed Al-Saud, Mohammed A. Bin Hussain, Siarhei Alexandrovich Zhdanok, Andrei Vladimirovich Krauklis, Petr Petrovich Samtsou, Anatolij Ivanovich Loznikov
  • Publication number: 20120067737
    Abstract: A method and apparatus for producing particles from a starting material, which includes at least one electrochemically-reactive material, with metal counter ions is disclosed. The starting material can be a bulk material, a virgin material, a purified, recovered material, and/or an industrial waste. The electrochemical-reactive material can be recovered in particle form, including microparticles and/or nanoparticles. The recovered material can be substantially pure electrochemically-reactive material or an alloy of the electrochemically-reactive material. In some embodiments, one or more electrochemically-reactive materials can be selectively recovered from the starting material.
    Type: Application
    Filed: May 3, 2011
    Publication date: March 22, 2012
    Applicant: Empire Technology Development LLC
    Inventor: Wei-Jun Zhang
  • Patent number: 8088193
    Abstract: A method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and rubbing the metal element to make nanoparticles. Another method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and applying sonic energy to at least one of the metal element and solution. A further method for making copper nanoparticles includes the step of adding ascorbic acid to a copper salt solution.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: January 3, 2012
    Inventors: Taofang Zeng, Chunwei Wu
  • Publication number: 20110303552
    Abstract: A one step, room temperature, electrochemical process for the synthesis of rutile titanium dioxide nanoneedles with high aspect ratio is disclosed herein.
    Type: Application
    Filed: January 12, 2010
    Publication date: December 15, 2011
    Inventors: Rajeshkumar Shankar Hyam, Reshma Kanta Bhosale, Satishchandra Balkrishna Ogale
  • Publication number: 20110272284
    Abstract: A process for treating the surface of a metal substrate comprising a constituent metal selected from the group consisting of Cr, Cu, Mn, Mo, Ag, Au, Pt, Pd, Rh, Pb, Sn, Ni, Zn, in some cases Fe, and alloys of these metals. An anodic potential is applied to the metal surface in an electrolytic circuit comprising the metal surface, a cathode, and an electrolytic solution that is in contact with the metal surface and in electrically conductive communication with the cathode. The electrolytic solution may contain an electrolyte comprising anions of phosphate, phosphonate, phosphite, phosphinate, nitrate, borate, silicate, molybdate, tungstate, carboxylate, oxalate and combinations thereof. The anion may comprise a polymer having a pendent moiety selected from the group consisting of phosphate, phosphonate, phosphite, phosphinate, sulfate, sulfonate, carboxylate and combinations thereof.
    Type: Application
    Filed: November 13, 2009
    Publication date: November 10, 2011
    Applicant: ENTHONE INC.
    Inventors: Danica Elbick, Ulrich Prinz, Andreas Königshofen, Markus Dahlhaus
  • Publication number: 20110203938
    Abstract: An electrochemical method for producing Si nanopowder, Si nanowires and/or Si nanotubes directly from compound SiX or a mixture containing a silicon compound SiX, the method comprises: providing an electrolysis cell having a cathode, an anode and an electrolyte, using the compound SiX or the mixture containing compound SiX as a cathode and immersing the cathode in an electrolyte comprising a metal compound molten salt, applying a potential between the cathode and the anode in the electrolysis cell, and forming one or more of Si nanopowder, Si nanowires and Si nanotubes on the cathode electrode. The method has advantages of: 1) shorter production processing, 2) inexpensive equipment, 3) convenient operation, 4) reduction of contaminate, 5) easily available feed materials, and 6) easy to achieve continuous production. This is a new field of using electrochemical method for producing one-dimensional Si nano material, and a new method of producing Si nanopowder, Si nanowires and Si nanotubes.
    Type: Application
    Filed: May 2, 2011
    Publication date: August 25, 2011
    Applicant: General Research Institute for Nonferrous Metals
    Inventors: Shigang LU, Juanyu YANG, Xiangjun ZHANG, Surong KAN
  • Publication number: 20110146449
    Abstract: The present invention generally relates to compositions and methods comprising polyoxometalates (POMs). In some cases, a reduced form of a POM may be formed via electrolysis in the presence of essentially no supporting electrolyte. The reduced POMs may be used for various applications, for example, for the formation of metallic nanoparticles. Some embodiments of the present invention provide compositions and methods comprising reduced forms of the polyoxometalate, [alpha-SiW12O40]4?.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 23, 2011
    Inventors: Jackie Y. Ying, Jie Zhang, Boon Ping Ting
  • Publication number: 20110100835
    Abstract: In the present method of producing a colloidal solution of metal nano-particles in which a pair of metal electrodes is oppositely arranged in an aqueous electrolytic solution in which metal salts are dissolved and a current is applied to the two electrodes while stirring the aqueous electrolytic solution using stirring means so that metal ions in the solution are reduced to extract metal nano-particles, the method is characterized by adding polysorvate to the aqueous electrolytic solution to coat the surface of metal nano-particles extracted in the solution, thereby preventing agglomeration of the metal nano-particles.
    Type: Application
    Filed: February 15, 2008
    Publication date: May 5, 2011
    Inventor: Eui-Sik Yoon
  • Publication number: 20110086238
    Abstract: The disclosure relates to metal materials with varied nanostructural morphologies. More specifically, the disclosure relates to niobium nanostructures with varied morphologies. The disclosure further relates to methods of making such metal nanostructures.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 14, 2011
    Inventor: Shrisudersan Jayaraman
  • Publication number: 20110068013
    Abstract: Disclosed herein are a method and apparatus for preparing metal nanoparticles using alternating current (AC) electrolysis, in which the yield of metal nanoparticles obtained can be greatly improved by maintaining the concentrations of a reducing agent and a dispersing agent at constant levels in proportion to the intensity of an electric current during the production of the metal nanoparticles.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 24, 2011
    Applicant: AMOGREENTECH CO., LTD.
    Inventors: Min Young CHOI, Byung Sun HAN, Tae Gyun KIM, Yun Jae KANG, Sung Keun BAE, Ki Woong MOON, Yong Sul SONG
  • Publication number: 20110048960
    Abstract: An electrochemical cell includes a container at atmospheric pressure comprising a liquid electrolyte and a first electrode at least partially immersed in the electrolyte. A plasma source is spaced apart from a surface of the electrolyte by a predetermined spacing, and a plasma spans the predetermined spacing to contact the surface of the electrolyte. A method of operating the electrochemical cell entails providing a first electrode at least partially immersed in a liquid electrolyte and producing a plasma in contact with a surface of the electrolyte at atmospheric pressure. The plasma acts as a second electrode, and a current is generated through the electrolyte. Electrochemical reactions involving at least the second electrode are initiated in the electrolyte.
    Type: Application
    Filed: August 6, 2010
    Publication date: March 3, 2011
    Inventor: R. Mohan Sankaran
  • Publication number: 20100320074
    Abstract: A method for preparing gallium nitride nanoparticles includes providing a pair of electrodes; the pair of electrodes being opposedly disposed to one another. One electrode of the pair of electrodes is filled with gallium nitride powder. The pair of electrodes is dipped in a liquid. An arc discharge is produced between the pair of electrodes. The arc discharge produces a plasma between the pair of electrodes.
    Type: Application
    Filed: January 15, 2010
    Publication date: December 23, 2010
    Applicants: SAMSUNG ELECTRONICS CO., LTD., RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
    Inventors: Woong CHOI, Manish CHHOWALLA, Seung-Yol JEONG, Jae-Young CHOI
  • Publication number: 20100229684
    Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent: water).
    Type: Application
    Filed: March 24, 2010
    Publication date: September 16, 2010
    Applicants: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.
    Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
  • Patent number: 7781317
    Abstract: A method for the non-catalytic growth of nanowires is provided. The method includes a reaction chamber with the chamber having an inlet end, an exit end and capable of being heated to an elevated temperature. A carrier gas with a flow rate is allowed to enter the reaction chamber through the inlet end and exit the chamber through the exit end. Upon passing through the chamber the carrier gas comes into contact with a precursor which is heated within the reaction chamber. A collection substrate placed downstream from the precursor allows for the formation and growth of nanowires thereon without the use of a catalyst. A second embodiment of the present invention is comprised of a reaction chamber, a carrier gas, a precursor target, a laser beam and a collection substrate. The carrier gas with a flow rate and a gas pressure is allowed to enter the reaction chamber through an inlet end and exit the reaction chamber through the exit end.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: August 24, 2010
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Joshua Goldberger, Melissa Fardy, Oded Rabin, Allon Hochbaum, Minjuan Zhang, Peidong Yang
  • Publication number: 20100147675
    Abstract: The invention relates to the synthesis of silicon-containing nanoparticles by laser pyrolysis. For this purpose: a precursor (SiH4) containing the element silicon is conveyed, by a transport fluid (He), into a pyrolysis reactor (REAC); laser radiation (LAS) is applied, in the reactor, to a mixture that the transport fluid and the precursor form; and silicon-containing nanoparticles (nP) are recovered at the exit of the reactor. In particular, the power of the laser radiation is controlled. Furthermore, the effective pulse duration is controlled within a laser firing period. Typically, for a power greater than 500 watts and a pulse duration greater than 40% of a laser firing period, nanoparticles having a crystalline structure with a size of less than or of the order of one nanometre are obtained at a rate greater than or of the order of 80 milligrams per hour. Under optimum conditions, a record rate of greater than 740 milligrams per hour was able to be obtained.
    Type: Application
    Filed: May 15, 2008
    Publication date: June 17, 2010
    Applicant: Commissarat A L'energie Atomique
    Inventors: Nathalie Herlin-Boime, Olivier Sublemontier, Frédéric Lacour
  • Publication number: 20100059360
    Abstract: The present invention relates to methods for the production of nanoparticles which may be optionally coated. In particular, the present invention relates to methods for the production of nanoparticles characterized in that precursors are subjected to substantially the same amount of activation energy or combination of activation energies in the activation zone at a predetermined concentration of precursors and at a predetermined time of exposure to the activation energy/energies. Furthermore, the present invention relates to nanoparticles produced by the methods according to the present invention. Finally, the present invention concerns a device for producing nanoparticles according to the method of the present invention. The invention provides for a tighter particle size distribution of the generated nanoparticles. The activation energy is selected from the group of RF, MW, IR, plasma, heat and photon absorption.
    Type: Application
    Filed: June 4, 2007
    Publication date: March 11, 2010
    Inventor: Thomas Wendling
  • Publication number: 20100024879
    Abstract: A method of preparing titania nanotubes involves anodization of titanium in the presence of chloride ions and at low pH (1-7) in the absence of fluoride. The method leads to rapid production of titania nanotubes of about 25 nm diameter and high aspect ratio. The nanotubes can be organized into bundles and tightly packed parallel arrays. Inclusion of organic acids in the electrolyte solution leads to the incorporation into the nanotubes of up to 50 atom percent of carbon. In a two-stage method, a titanium anode is pre-patterned using a fluoride ion containing electrolyte and subsequently anodized in a chloride ion containing electrolyte to provide more evenly distributed nanotube arrays. The titania nanotubes have uses in composite materials, solar cells, hydrogen production, and as hydrogen sensors.
    Type: Application
    Filed: February 21, 2008
    Publication date: February 4, 2010
    Applicant: NORTHEASTERN UNIVERSITY
    Inventors: Christiaan Richter, Latika Menon, Ronald J. Willey
  • Publication number: 20090288442
    Abstract: A discharge device in a substance modifying device is provided with a positive electrode in linear or needle form and a negative electrode in plane form. Thus, substances having a nanostructure are made to contact an active species generated through streamer discharge, which is discharge between the positive and negative electrodes, where discharge between certain points of the positive electrode and a number of points on the negative electrode occurs stably and approximately simultaneously, and is diffused from between the positive and negative electrodes, so that the nanostructure is eliminated. The nanostructure is eliminated in this manner, and thus, the bioinvasive response due to the nanostructure of substances is reduced.
    Type: Application
    Filed: January 18, 2006
    Publication date: November 26, 2009
    Applicant: Daikin Industries, Ltd.
    Inventors: Jun-ichiro Arai, Satoshi Ozawa, Yoshio Okamoto, Kenkichi Kagawa, Satoki Nakada
  • Publication number: 20090200170
    Abstract: A method of growing a crystalline nanowire is disclosed. The method includes providing a pair of electrodes, immersing the electrode pair in a salt solution, and selectively applying a voltage signal to the electrode pair to induce growth of the nanowire between the electrode pairs.
    Type: Application
    Filed: December 29, 2008
    Publication date: August 13, 2009
    Inventors: Bret N. FLANDERS, Ishan TALUKDAR, Birol OZTURK
  • Publication number: 20080217181
    Abstract: The present invention relates to a method for obtaining monocrystalline or single crystal nanowires. Said nanowires are grown in a pattern making use of electro-chemical deposition techniques. Most preferred, the electrolytic bath is based on chlorides and has an acidic pH. Single element as well as combinations of two elements nanowires can be grown. Depending on the element properties the obtained nanowire can have metallic (conductive) or semi-metallic (semi-conductive) properties. The observed nanowire growth presents an unusual behavior compared to the classical nanowire template-assisted growth where a cap is formed as soon as the metal grows out of the pattern. Under given conditions of bath composition and potential (current) settings the nanowires grow out of the pattern up to a few microns without any significant lateral overgrowth.
    Type: Application
    Filed: May 8, 2007
    Publication date: September 11, 2008
    Applicants: Interuniversitair Microelektronica Centrum (IMEC), Katholieke Univeriteit Leuven (KUL)
    Inventors: Geoffroy Hautier, Philippe M. Vereecken
  • Patent number: 7422667
    Abstract: Carbon nanoparticles including both nanofilaments and nanotubes produced by an electrochemical deposition method from organic solutions at room temperature, in which the formation and growth of carbon nanoparticles are stimulated by the catalyst, such as iron and nickel. It has been found that the electrochemical deposition conditions have a strong influence on the growth phenomenon of the carbon nanotubes. Scanning electron microscope (SEM) and transmitting electron microscope (TEM) characterizations show that the diameter of nanotubes is of the order of approximately 100 nm, and the length of filaments can be up to approximately 50 ?m, depending on the size of catalyst particles.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: September 9, 2008
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Dan Zhou, Lee Chow, Elvira Vladimirovna Anoshkina
  • Patent number: 7416911
    Abstract: A method by which silicon nanostructures may be selectively coated with molecules or biomolecules using an electrochemical process. This chemical process may be employed as a method for coating many different nanostructures within a circuit, each with a different molecular or biomolecular material. The density of devices within a circuit of devices that can be coated with different molecules is limited only by the ability to electronically address each device separately. This invention has applications toward the fabrication of molecular electronic circuitry and toward the fabrication of nanoelectronic molecular sensor arrays.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: August 26, 2008
    Assignee: California Institute of Technology
    Inventors: James R. Heath, Yuri Bunimovich, Guanglu Ge, Kristen Beverly, John Nagarah, Michael Roukes, Peter Willis
  • Publication number: 20080169003
    Abstract: Systems and methods are provided through which in some embodiments for controlling intermolecular forces between a contact surface and a fabricated microstructure having a base and at least one or more nano-structures. The contact surface and the fabricated microstructure are joined by the interplay of electrostatic and van der Waals forces. The contact surface can be planetary dust with surfaces involved in planetary exploration, as well as synthetic gecko hairs that would allow small robots to climb walls and traverse ceilings. The system and method allow intense electrostatic forces to be applied at variable levels in order to modulate the effectiveness of van der Waals forces as well as external electrostatic forces. This device enables advanced small robot mobility, planetary dust control at all possible ambient pressures, as well as dust sample collection for exploration analysis.
    Type: Application
    Filed: October 10, 2007
    Publication date: July 17, 2008
    Applicant: NASA Headquarters
    Inventor: STEVEN A. CURTIS
  • Patent number: 7351313
    Abstract: The object of the present invention is to provide a nano-scale molecular assembly such as a conductive nano-wire. Specifically, there is provided an electrolytic apparatus for forming a molecular assembly, including two electrodes and an electrolytic cell holding an electrolyte and the two electrodes, wherein the gap between the two electrodes is from 1 nm to 100 ?m, by allowing the electrolytic cell to hold an electrolyte containing molecules that is to constitute the molecular assembly, and applying a voltage across the two electrodes in the state wherein the electrolyte and the two electrodes are in contact.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: April 1, 2008
    Assignee: National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Hiroyuki Hasegawa, Tohru Kubota, Shinro Mashiko