Detector Using Nanostructure Patents (Class 977/953)
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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: 20130094020Abstract: A probe for use in a sensing application includes an elongate body having a first end and a free end, wherein the first end is to be attached to a support. The probe also includes a plurality of nano-fingers having respective bases and tips, wherein each of the plurality of nano-fingers is attached to the free end and is composed of a flexible material, and wherein the plurality of nano-fingers are collapsed toward each other such that the tips of the plurality of nano-fingers are substantially in contact with each other.Type: ApplicationFiled: October 13, 2011Publication date: April 18, 2013Inventor: Zhiyong Li
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Patent number: 8405041Abstract: An electrode for an ionization chamber and an ionization chamber including an electrode are provided wherein the electrode comprises a substrate comprising a first material, and a plurality of nanowires extending from the substrate and manufactured by processing the first material of the substrate.Type: GrantFiled: November 17, 2008Date of Patent: March 26, 2013Assignee: NXP B.V.Inventors: Mohamed Boutchich, Vijayaraghavan Madakasira, Nader Akil
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Publication number: 20130057943Abstract: An electronic paper display device includes an electronic paper display panel, and a functional layer. The electronic paper display panel includes a common electrode layer and a display surface. The functional layer is located on the display surface and includes a carbon nanotube touching functional layer. A distance between the common electrode layer and the carbon nanotube touching functional layer is above 100 microns and equal to or less than 2 millimeters.Type: ApplicationFiled: December 27, 2011Publication date: March 7, 2013Applicant: Shih Hua Technology Ltd.Inventors: PO-SHENG SHIH, JIA-SHYONG CHENG, PO-YANG CHEN
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Publication number: 20130031987Abstract: The present disclosure relates to an element for sensing strain, stress or force. The sensing element comprises a substrate, a pair of electrodes on the substrate, and a network of carbon nanotubes for sensing the strain, stress or force within a structure. The network of carbon nanotubes defines at least in part an electrical path between the electrodes of the pair, and the electrical path has a resistance which is altered by the sensed strain, stress or force. Combining a plurality of sensing elements coupled to a common substrate forms a sensing system.Type: ApplicationFiled: December 29, 2010Publication date: February 7, 2013Inventors: Jacques Beauvais, Patrick Boissy, Jonathan Genest, Annick Sauve
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Patent number: 8365311Abstract: Provided is a highly selective and non-destructive method and apparatus for the measurement of one or more target molecules within a target environment. The apparatus comprises of a modified AFM (atomic force microscope) tip to create a tapered nanoscale co-axial cable, and wherein the application of an alternating potential between the inner and outer electrodes of the co-axial cable creates a dielectrophoretic force for attracting molecules toward the tip-end which is pre-treated with one or more specific ligands.Type: GrantFiled: August 11, 2011Date of Patent: January 29, 2013Assignee: The Regents of the University of CaliforniaInventors: Dharmakeerthi Nawarathna, H. Kumar Wickaramsinghe
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Patent number: 8363017Abstract: A touch panel includes a first electrode plate and a second electrode plate separated from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer disposed on a lower surface of the first substrate. The second electrode plate includes a second substrate and a second conductive layer disposed on an upper surface of the second substrate. At least one of the first conductive layer and the second conductive layer includes a carbon nanotube layer, and carbon nanotubes in the carbon nanotube layer are arranged along a same direction. A display device adopting the touch panel includes the touch panel and a display element.Type: GrantFiled: September 29, 2008Date of Patent: January 29, 2013Assignees: Beijing FUNATE Innovation Technology Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
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Publication number: 20130019351Abstract: A high resolution AFM tip is provided which includes an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of the semiconductor cantilever, the semiconductor pyramid having an apex. The AFM tip also includes a single Al-doped semiconductor nanowire on the exposed apex of the semiconductor pyramid, wherein the single Al-doped semiconductor nanowire is epitaxial with respect to the apex of the semiconductor pyramid.Type: ApplicationFiled: September 10, 2012Publication date: January 17, 2013Applicants: King Abdulaziz City for Science and Technology, International Business Machines CorporationInventors: Guy M. Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
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Patent number: 8349453Abstract: A metal ion sensor is provided. The metal ion sensor includes a nanoparticle core doped with a first luminescent material and a shell enclosing the nanoparticle core. The shell includes a second luminescent material and binding sites of outer metal ions. The first luminescent material and the second luminescent material emit light with mutually different colors when excited by an excitation source. The luminescence intensity of the light emitted from the second luminescent material varies in accordance with the binding amount of the outer metal ions, such that the emission color of the combined luminescence of the first luminescent material and the second luminescent material is changed.Type: GrantFiled: December 1, 2009Date of Patent: January 8, 2013Assignee: SNU R&DB FoundationInventors: Kookheon Char, Hosub Kim
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Patent number: 8350360Abstract: A carbon nanotube (CNT) capacitor includes a CNT film and four terminals. The first terminal includes a first end electrode disposed at a first end of the CNT film. The second terminal includes a second end electrode disposed at a second end of the CNT film. The third terminal includes an upper electrode disposed above the CNT film. The fourth terminal includes a lower electrode disposed below the CNT film. A method of operating a CNT capacitor includes applying a first signal across the first and second terminals to switch a CNT film from a conductive state to a non-conductive state, and applying a second signal across the third and fourth terminals to store charge or to discharge charges in the CNT capacitor. A method of making a CNT capacitor includes providing four terminals and a CNT film.Type: GrantFiled: August 26, 2010Date of Patent: January 8, 2013Assignee: Lockheed Martin CorporationInventor: Quoc X. Ngo
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Patent number: 8344357Abstract: A 3-terminal electronic device includes: a control electrode; a first electrode and a second electrode; and an active layer that is provided between the first electrode and the second electrode and is provided to be opposed to the control electrode via an insulating layer. The active layer includes a collection of nanosheets. When it is assumed that the nanosheets have an average size LS and the first electrode and the second electrode have an interval D therebetween, LS/D?10 is satisfied.Type: GrantFiled: August 26, 2010Date of Patent: January 1, 2013Assignee: Sony CorporationInventor: Toshiyuki Kobayashi
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Publication number: 20120327024Abstract: Certain example embodiments of this invention relate to large-area transparent conductive coatings (TCCs) including carbon nanotubes (CNTs) and nanowire composites, and methods of making the same. The ?dc/?opt ratio of such thim films may be improved via stable chemical doping and/or alloying of CNT-based films. The doping and/or alloying may be implemented in a large area coating system, e.g., on glass and/or other substrates. In certain example embodiments, a CNT film may be deposited and then doped via chemical functionalization and/or alloyed with silver and/or palladium. Both p-type and n-type dopants may be used in different embodiments of this invention. In certain example embodiments, silver and/or other nanowires may be provided, e.g., to further decrease sheet resistance. Certain example embodiments may provide coatings that approach, meet, or exceed 90% visible transmission and 90 ohms/square target metrics.Type: ApplicationFiled: September 6, 2012Publication date: December 27, 2012Applicant: Guardian Industries Corp.Inventor: Vijayen S. VEERASAMY
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Publication number: 20120329686Abstract: A lubricating and shock absorbing materials are described, which are based on nanoparticles having the formula A1-x-Bx-chalcogenide. Processes for their manufacture are also described.Type: ApplicationFiled: March 10, 2011Publication date: December 27, 2012Inventors: Reshef Tenne, Francis Leonard Deepak, Hagai Cohen, Sidney R. Cohen, Rita Rosentsveig, Lena Yadgarov
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Publication number: 20120322977Abstract: An inorganic nanoparticle array is self-assembled onto an unpatterned or patterned, peptide-functionalized substrate surface using peptide constructs comprising a substrate-binding peptide and a mineralization peptide.Type: ApplicationFiled: June 19, 2012Publication date: December 20, 2012Inventor: Eric H. Hill
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Patent number: 8324555Abstract: A multiple transistor differential amplifier is implemented on a segment of a single graphene nanoribbon. Differential amplifier field effect transistors are formed on the graphene nanoribbon from a first group of electrical conductors in contact with the graphene nanoribbon and a second group of electrical conductors insulated from, but exerting electric fields on, the graphene nanoribbon thereby forming the gates of the field effect transistors. A transistor in one portion of the graphene nanoribbon and a transistor in another portion of the graphene nanoribbon are responsive to respective incoming electrical signals. A current source, also formed on the graphene nanoribbon, is connected with the differential amplifier, and the current source and the differential amplifier operating together generate an outgoing signal responsive to the incoming electrical signal. In an example application, the resulting circuit can be used to interface with electrical signals of nanoscale sensors and actuators.Type: GrantFiled: August 25, 2011Date of Patent: December 4, 2012Assignee: Pike Group LLCInventor: Lester F. Ludwig
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Publication number: 20120266685Abstract: A sensing material for use in a sensor is disclosed. Such a sensing material includes a polymer base and a piezoresistive nanocomposite embedded into the polymer base in a continuous pattern. The nanocomposite comprises a polymer matrix and a plurality of conductive nanofillers suspended in the matrix. The conductive nanofillers may be one or a combination of nanotubes, nanowires, particles and flakes. The density of the plurality of nanofillers is such that the nanocomposite exhibits conductivity suitable for electronic and sensor applications.Type: ApplicationFiled: September 30, 2010Publication date: October 25, 2012Inventors: Jin-Woo Choi, Chao-Xuan Liu
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Patent number: 8294008Abstract: Carbon nanotubes are formed on projections on a substrate. A metal, such as nickel is deposited on the substrate with optional platforms, and heated to form the projections. Carbon nanotubes are formed from the projections by heating in an ethylene, methane or CO atmosphere. A heat sensor is also formed proximate the carbon nanotubes. When exposed to IR radiation, the heat sensor detects changes in temperature representative of the IR radiation. In a gas sensor, a thermally isolated area, such as a pixel is formed on a substrate with an integrated heater. A pair of conductors each have a portion adjacent a portion of the other conductor with projections formed on the adjacent portions of the conductors. Multiple carbon nanotubes are formed between the conductors from one projection to another. IV characteristics of the nanotubes are measured between the conductors in the presence of a gas to be detected.Type: GrantFiled: May 16, 2006Date of Patent: October 23, 2012Assignee: Honeywell International Inc.Inventors: Barrett E. Cole, J. David Zook
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Publication number: 20120261167Abstract: Transparent electrodes, devices incorporating such electrodes, and associated methods are provided. In one aspect, for example, a method for fabricating a transparent electrode can include providing a carbon-insoluble support substrate, forming a carbon-soluble layer on the support substrate, and applying a carbon source to the carbon-soluble layer to form a plurality of graphene layers on the carbon-soluble layer. In another aspect, the method can further include providing a transparent substrate having an adhesive surface, applying the adhesive surface to the plurality of graphene layers such that the transparent substrate is adhered thereto, and removing the carbon-soluble layer and the support substrate from the plurality of graphene layers.Type: ApplicationFiled: March 19, 2012Publication date: October 18, 2012Inventor: Chien-Min Sung
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Patent number: 8283936Abstract: Devices, systems, and methods for detecting nucleic acid hybridization, including single nucleic base mutations at low concentrations, are disclosed, using surface-tethered hairpin loop oligonucleotide probes and metal-nanoparticles conjugated to a hybridization detection sequence that is capable of binding the stem region of the opened hairpin loop oligonucleotide probe, without the use of labeling or target modification and capable of recycling.Type: GrantFiled: February 8, 2010Date of Patent: October 9, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Samir M. Iqbal, Swati Goyal, Shawn M. Christensen, Mohammud R. Noor
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Publication number: 20120247180Abstract: Device for the selective detection of benzene gas, which comprises, on a base substrate, a combination of at least one functionalised multi- or single-wall carbon nanotube sensor decorated with rhodium clusters, and at least one functionalised multi- or single-wall carbon nanotube sensor decorated with metal clusters selected from gold, palladium, nickel and titanium, and/or undecorated, where said substrate additionally comprises means for measuring the variation in the resistance of said sensors. The device is useful at ambient temperature in the presence or absence of oxygen and easy to handle. It also relates to a method for the manufacturing thereof and for detecting the gas in the chemical industry, the petrochemical industry, petrol stations, or household, aeronautical or research applications.Type: ApplicationFiled: November 2, 2010Publication date: October 4, 2012Inventors: Eduard Llobet Valero, Radouane Leghrib, Marc Delgado Olivella, Jean-Jacques Pireaux, Alexandre Felten, Jérôme Guillot, Henri-Nöel Migeon, Ali Mansour, François Amand Baudouin Reniers, Nicolas Yves Claessens, Frédéric Gilbert Michel Demoisson
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Patent number: 8273532Abstract: In a molecular analysis system, there is provided a structure including a nanopore and first and second fluidic reservoirs. The two reservoirs are fluidically connected via the nanopore. A detector is connected to detect molecular species translocation of the nanopore, from one of the two fluidic reservoirs to the other of the two fluidic reservoirs. A controller is connected to generate a control signal to produce conditions at the nanopore to induce the molecular species to re-translocate the nanopore at least once after translocating the nanopore. This enables a method for molecular analysis in which a molecular species is translocated a plurality of times through a nanopore in a structure between two fluidic reservoirs separated by the structure.Type: GrantFiled: October 2, 2008Date of Patent: September 25, 2012Assignee: President and Fellows of Harvard CollegeInventors: Marc H. Gershow, Jene A. Golovchenko, Daniel Branton
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Publication number: 20120201860Abstract: Ultra-thin porous films are deposited on a substrate in a process that includes laying down an organic polymer, inorganic material or inorganic-organic material via an atomic layer deposition or molecular layer deposition technique, and then treating the resulting film to introduce pores. The films are characterized in having extremely small thicknesses of pores that are typically well less than 50 nm in size.Type: ApplicationFiled: May 11, 2010Publication date: August 9, 2012Inventors: Alan W. Weimer, Xinhua Liang, Jianhua Li, John L. Falconer, Miao Yu
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Publication number: 20120177934Abstract: The invention relates to a method for producing stretchable electrodes, where electrically conductive carbon particles, especially carbon nanotubes, are introduced into a coating comprising an elastomer. In said method, a preparation of non-aggregated carbon particles having an average particle diameter ranging from=0.3 nm to=3000 nm in a solvent acts upon a coating comprising an elastomer. The solvent can cause a coating comprising an elastomer to swell. The duration of the action is calculated so as to be insufficient to dissolve the elastomer. Optionally, another electrically conductive layer is applied. The invention also relates to a stretchable electrode obtained in said manner and to the use thereof.Type: ApplicationFiled: January 14, 2010Publication date: July 12, 2012Applicant: Bayer MaterialScience AG Law and PatentsInventors: Stephanie Vogel, Joachim Wagner, Christel Fussangel
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Publication number: 20120146162Abstract: A nanosensor comprising a substrate in which an opening defining a hole is formed; a first layer disposed on the substrate, which comprises a first nanopore in communication with the hole in the substrate; and a second layer contacted or coupled with the first layer and formed of a porous material.Type: ApplicationFiled: December 12, 2011Publication date: June 14, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Seong-ho CHO, Dong-ho LEE, Jeo-young SHIM
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Publication number: 20120104325Abstract: Disclosed herein is an isolable colloidal particle comprising a nanoparticle and an inorganic capping agent bound to the surface of the nanoparticle, a solution of the same, a method for making the same from a biphasic solvent mixture, and the formation of structures and solids from the isolable colloidal particle. The process can yield photovoltaic cells, piezoelectric crystals, thermoelectric layers, optoelectronic layers, light emitting diodes, ferroelectric layers, thin film transistors, floating gate memory devices, imaging devices, phase change layers, and sensor devices.Type: ApplicationFiled: April 23, 2010Publication date: May 3, 2012Applicant: THE UNIVERSITY OF CHICAGOInventors: Dmitri V. Talapin, Maksym V. Kovalenko, Jong-Soo Lee, Chengyang Jiang
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Patent number: 8133465Abstract: A polymer-carbon nanotube composite film is provided for use as a sensor for detecting chemical vapors. The composite film is formed by coating perpendicularly-aligned carbon nanotubes with a polymer selected from poly(vinyl acetate), poly(isoprene), or blends thereof. The sensor may be formed by attaching at least two electrodes to the polymer-carbon nanotube composite film. The sensor may be used in any applications where the sensor is capable of detecting a change in conductivity in the composite.Type: GrantFiled: September 11, 2006Date of Patent: March 13, 2012Assignee: University of DaytonInventors: Liming Dai, Wei Chen
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Patent number: 8124419Abstract: This invention relates generally to gas sensors comprising organized assemblies of carbon and non-carbon compounds. The invention also relates to devices containing such gas sensors and analysis units. In preferred embodiments, the organized assemblies 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.Type: GrantFiled: April 19, 2010Date of Patent: February 28, 2012Assignee: Yazaki CorporationInventors: Sean Imtiaz Brahim, Leonid Grigorian, Steven G. Colbern, Robert L. Gump, Fikret Nuri Kirkbir
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Patent number: 8117902Abstract: The invention is comprised, in part, of a surface that contains more than one component or construct. Such heterogenous surface compositions and configurations, related systems and methods for sensing particle or analyte interaction therewith can selectively and/or differentially interact with a range of particles/analytes, in lieu of specific molecular sensor-analyte interactions for each particle. These interactions of various analytes or particles can differ sufficiently in strength and range between multiple analyte types or particles to effect a separation of analytes or particles mixtures, in a way that requires no sensing or detection. With incorporation of a sensing mechanism, discrimination/detection of different compounds within an analyte mixture can be accomplished.Type: GrantFiled: June 23, 2008Date of Patent: February 21, 2012Assignee: University of MassachusettsInventors: Maria Monica Santore, Surachate Kalasin
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Publication number: 20120029823Abstract: A sensing device for use in determining at least one attribute of a weather event comprising a plurality of elements. The sensing device can comprise a pressure sensitive surface. The pressure sensitive surface can comprise a pressure sensor. In response to receiving pressure applied by one of the elements, the pressure sensor can generate an output. A first attribute of the at least one attribute of the weather event is determinable at least in part from the output. A system, method, and computer program product for use in determining the at least one attribute are also provided.Type: ApplicationFiled: August 2, 2010Publication date: February 2, 2012Inventors: David C. Brillhart, Nicholas J. Karels
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Publication number: 20110320142Abstract: A temperature independent pressure sensor for selectively determining pressure is provided. The sensor comprises a resonance sensor circuit, a pressure sensitive component disposed on the sensor circuit, and an electromagnetic field modulator. A temperature independent pressure sensor system comprises a resonance sensor circuit, a pressure sensitive component disposed on the sensor circuit, an electromagnetic field modulator, and a processor that generates a multivariate analysis of sensor response pattern that is based on a change in an environmental pressure of the sensor system. A method of detecting a pressure response pattern in a temperature independent manner is also provided.Type: ApplicationFiled: June 28, 2010Publication date: December 29, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Cheryl Margaret Surman, Radislav Alexandrovich Potyrailo, William Guy Morris
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Publication number: 20110285409Abstract: A method for forming a nanofluidic channel measuring system is disclosed. The method includes forming a first trench in a substrate, forming a second trench in the substrate, the first trench and the second trench are separated by a first width, providing a first conductor pad at a first location, providing a second conductor pad at a second location, forming a first nano-wire for coupling the first conductor pad with the second conductor pad, and forming a nano-channel through the first nano-wire, the nano-channel also coupling the first trench and the second trench, the nano-channel configured to sever the first nano-wire. A nanofluidic channel measuring system is also disclosed.Type: ApplicationFiled: January 29, 2010Publication date: November 24, 2011Inventors: Teimour Maleki, Babak Ziaie, Saeed Mohammadi
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Publication number: 20110278534Abstract: An optoelectronic device that includes a material having enhanced electronic transitions. The electronic transitions are enhanced by mixing electronic states at an interface. The interface may be formed by a nano-well, a nano-dot, or a nano-wire.Type: ApplicationFiled: February 22, 2011Publication date: November 17, 2011Inventor: Marcie R. Black
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Patent number: 8052855Abstract: A carbon nanotube (“CNT”) gas sensor includes a substrate, an insulating layer formed on the substrate, electrodes formed on the insulating layer, and CNT barriers that protrude higher than the electrodes in spaces between the electrodes to form gas detecting spaces. A method of manufacturing the gas sensor includes forming an insulating layer on a substrate, forming an electrode pattern on the insulating layer, coating CNT paste having a thickness greater than a thickness of electrodes in the electrode pattern on the electrodes and the insulating layer, and patterning and firing the carbon nanotube paste, including using a photolithography method, to retain only portions of the CNT paste coated on spaces between the electrodes.Type: GrantFiled: May 8, 2007Date of Patent: November 8, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jung-im Han, Soo-hyung Choi, Jeong-hee Lee, Soo-suk Lee, Jeong-na Heo
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Patent number: 8037775Abstract: A system for locating impacts comprises at least one array of a plurality of carbon nanotubes, each carbon nanotube operable to emit electrical activity when compressed. The system also comprises at least one sensor coupled to the at least one array configured to detect emitted electrical activity from the plurality of carbon nanotubes. Furthermore, a computer is configured to determine the location of an impact on the at least one array in response to the detected emitted electrical activity from the plurality of carbon nanotubes.Type: GrantFiled: October 17, 2008Date of Patent: October 18, 2011Assignee: Raytheon CompanyInventors: Timothy J. Imholt, Gary A. Frazier
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Patent number: 8030729Abstract: A device disclosed herein includes a first layer, a second layer, and a first plurality of nanowires established between the first layer and the second layer. The first plurality of nanowires is formed of a first semiconductor material. The device further includes a third layer, and a second plurality of nanowires established between the second and third layers. The second plurality of nanowires is formed of a second semiconductor material having a bandgap that is the same as or different from a bandgap of the first semiconductor material.Type: GrantFiled: October 1, 2008Date of Patent: October 4, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Nathaniel Quitoriano, Theodore I. Kamins
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Patent number: 8026560Abstract: Techniques for ultra-sensitive detection are provided. In one aspect, a detection device is provided. The detection device comprises a source; a drain; a nanowire comprising a semiconductor material having a first end clamped to the source and a second end clamped to the drain and suspended freely therebetween; and a gate in close proximity to the nanowire.Type: GrantFiled: July 15, 2010Date of Patent: September 27, 2011Assignee: International Business Machines CorporationInventors: Ali Afzali-Ardakani, Sudhir Gowda, Supratik Guha, Hendrik F. Hamann, Emanuel Tutuc
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Patent number: 8026508Abstract: Provided are a semiconductor device and a method of fabricating the same. The semiconductor device includes: a single electron box including a first quantum dot, a charge storage gate on the first quantum dot, and a first gate electrode on the charge storage gate, the charge storage gate exchanging charges with the first quantum dot, the first gate electrode adjusting electric potential of the first quantum dot; and a single electron transistor including a second quantum dot below the first quantum dot, a source, a drain, and a second gate electrode below the second quantum dot, the second quantum dot being capacitively coupled to the first quantum dot, the source contacting one side of the second quantum dot, the drain contacting the other side facing the one side, the second gate electrode adjusting electric potential of the second quantum dot.Type: GrantFiled: July 7, 2009Date of Patent: September 27, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Myung-Sim Jun, Moon-Gyu Jang, Tae-Gon Noh, Tae-Moon Roh
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Publication number: 20110228275Abstract: A hydrogen purity sensing system includes a light source which provides an optical signal through a fiber optic cable. A hydrogen purity sensor is provided in the system which comprises a multilayered nanostructural film of high refractive index and low refractive index materials for receiving the optical signal. The system further includes a photodetector for receiving a reflected optical signal from the hydrogen purity sensor and a processing circuitry coupled to the photodetector for analyzing the reflected optical signal.Type: ApplicationFiled: March 17, 2010Publication date: September 22, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Hua Xia, Shashank Nath Khandavalli
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Publication number: 20110215002Abstract: The present invention is generally directed to devices and methods for sensing a variety of biologically-related substances. In a device aspect, the present invention is directed to a multilayer device for sensing metal ions, biological molecules, or whole cells. The device comprises: a) one or more cavities that provide for the introduction of a sample to be analyzed and one or more channels that provide for exit of the sample, or one or more channels that provide for the introduction and exit of the sample; b) one or more single-walled carbon nanotubes presented to the one or more cavities or one or more channels; c) a plurality of electrodes electrically connected to the one or more single-walled carbon nanotubes; and, a reference gate electrode presented to the one or more cavities or one or more channels. In a method aspect, the present invention is directed to a method for sensing species such as a metal, biological cells, and one or more biological molecules using the device.Type: ApplicationFiled: February 11, 2011Publication date: September 8, 2011Inventor: William Emerson Martinez
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Patent number: 8012326Abstract: Polymer nanofibers, such as polyaniline nanofibers, with uniform diameters less than 500 nm can be made in bulk quantities through a facile aqueous and organic interfacial polymerization method at ambient conditions. The nanofibers have lengths varying from 500 nm to 10 ?m and form interconnected networks in a thin film. Thin film nanofiber sensors can be made of the polyaniline nanofibers having superior performance in both sensitivity and time response to a variety of gas vapors including, acids, bases, redox active vapors, alcohols and volatile organic chemicals.Type: GrantFiled: February 1, 2007Date of Patent: September 6, 2011Assignees: The Regeants Of The Universtiy Of California, The Aerospace CorporationInventors: Bruce H. Weiller, Shabnam Virji, Richard B. Kaner, Jiaxing Huang
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Patent number: 8013286Abstract: A multiple transistor differential amplifier is implemented on a single graphene nanoribbon. Differential amplifier field effect transistors are formed on the graphene nanoribbon from a first group of electrical conductors in contact with the graphene nanoribbon and a second group of electrical conductors insulated from, but exerting electric fields on, the graphene nanoribbon thereby forming the gates of the field effect transistors. A transistor in one portion of the differential amplifier and a transistor in another portion of the differential amplifier are responsive to an incoming electrical signal. A current source, also formed on the graphene nanoribbon, is connected with the differential amplifier, and the current source and the differential amplifier operating together generate an outgoing signal responsive to the incoming electrical signal.Type: GrantFiled: November 17, 2010Date of Patent: September 6, 2011Inventor: Lester F. Ludwig
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Patent number: 8008014Abstract: In a molecular analysis system, there is provided a structure including a nanopore and first and second fluidic reservoirs. The two reservoirs are fluidically connected via the nanopore. A detector is connected to detect molecular species translocation of the nanopore, from one of the two fluidic reservoirs to the other of the two fluidic reservoirs. A controller is connected to generate a control signal to produce conditions at the nanopore to induce the molecular species to re-translocate the nanopore at least once after translocating the nanopore. This enables a method for molecular analysis in which a molecular species is translocated a plurality of times through a nanopore in a structure between two fluidic reservoirs separated by the structure.Type: GrantFiled: October 2, 2008Date of Patent: August 30, 2011Assignee: President and Fellows of Harvard CollegeInventors: Marc H. Gershow, Jene A. Golovchenko, Daniel Branton
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Publication number: 20110207237Abstract: A biosensor having an optical fiber having at least one curved portion configured to enhance penetration of evanescent waves; and one or more nanoparticles associated with the optical fiber, and configured to enhance localized surface plasmon resonance.Type: ApplicationFiled: February 19, 2010Publication date: August 25, 2011Applicant: INDIAN INSTITUTE OF TECHNOLOGY BOMBAYInventors: V.V.R. SAI, Soumyo Mukherji, Tapanendu Kundu
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Publication number: 20110203021Abstract: The present invention relates to SPM nanoprobes and the preparation method thereof, more particularly, to SPM nanoprobes comprising a spheroid deposit capped-nanoneedle bonded to one end of a mother tip, wherein the spheroid deposit is formed by particle beam induced deposition and is characterized in that the ratio of the diameter of the spheroid deposit to that of the nanoneedle is in the range of 1.5 to 8.5. The SPM nanoprobe according to the present invention is capable of imaging or measuring an irregularly curved or complicated surface, pattern and/or a frictional or adhesive force thereof and controlling size of a spheroid deposit formed at the end portion of nanoneedle and the ratio of the diameter of the spheroid deposit to that of the nanoneedle arbitrarily.Type: ApplicationFiled: July 31, 2009Publication date: August 18, 2011Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCEInventors: Sang Jung An, Buong Chon Park, Yung-ho Kahng, Jin Ho Choi, Kwang Hoon Jeong
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Patent number: 7994593Abstract: A solid-state field-effect transistor device for detecting chemical and biological species and for detecting changes in radiation is disclosed. The device includes a quantum wire channel section to improve device sensitivity. The device is operated in a fully depleted mode such that a sensed biological, chemical or radiation change causes an exponential change in channel conductance of the transistor.Type: GrantFiled: June 9, 2008Date of Patent: August 9, 2011Assignee: The Arizona Board of RegentsInventors: Bharath R. Takulapalli, Gerard Laws, John Devens Gust, Jr., Trevor Thornton
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Publication number: 20110188034Abstract: A surface enhanced Raman spectroscopy (SERS) apparatus, system and method employ a plurality of nanorods configured to vibrate. The apparatus includes the nanorods having tips at free ends opposite an end attached to a substrate. The tips are configured to adsorb an analyte and to vibrate at a vibration frequency. The apparatus further includes a vibration source configured to vibrate the free ends of the nanorods at the vibration frequency in a back-and-forth motion. Vibration of the nanorods is configured to facilitate detection of a Raman scattering signal emitted by the analyte adsorbed on the nanorod tips. The system further includes a synchronous detector configured to receive the Raman signal and to be gated cooperatively with the vibration of the nanorods. The method includes inducing a vibration of the nanorods, illuminating the vibrating tips to produce a Raman signal, and detecting the Raman signal using the detector.Type: ApplicationFiled: January 29, 2010Publication date: August 4, 2011Inventors: Michael J. Stuke, Alexandre M. Bratkovski, Min Hu, Huei Pei Kuo, Jingjing Li, Zhiyong Li, Fung Suong Ou, Shih-Yuan (Sy) Wang, Wei Wu
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Publication number: 20110188035Abstract: A vibrating tip surface enhanced Raman spectroscopy (SERS) apparatus, system and method employ a nano-needle configured to vibrate. The apparatus includes the nano-needle with a substantially sharp tip at a free end opposite an end attached to a substrate. The tip is configured to adsorb an analyte. The apparatus further includes a vibration source configured to provide an alternating current (AC) electric field that induces a vibration of the free end and the tip of the nano-needle. Vibration of the nano-needle under the influence of the AC electric field facilitates detection of a Raman scattering signal from the analyte adsorbed on the nano-needle tip. The system further includes a synchronous detector configured to be gated cooperatively with the vibration of the nano-needle. The method includes inducing the vibration, illuminating the vibrating tip to produce a Raman signal, and detecting the Raman signal using the detector.Type: ApplicationFiled: January 29, 2010Publication date: August 4, 2011Inventors: Huei Pei Kuo, Michael J. Stuke, Min Hu, Fung Suong Ou, Shih-Yuan (SY) Wang, Alexandre M. Bratkovski, Wei Wu, Zhiyong Li
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Publication number: 20110174064Abstract: A method of predicting formation of an amyloid plaque in a peptide sample is disclosed. The method comprises determining presence of quantum confinement in the sample, and predicting that formation of an amyloid plaque is likely to occur if the sample exhibits quantum confinement.Type: ApplicationFiled: September 30, 2009Publication date: July 21, 2011Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Nadav Amdursky, Nadav Amdursky, Ehud Gazit, Gil Rosenman
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Patent number: 7981266Abstract: An electrochemical gas sensor (9) has improved electrochemical measurement properties and housing tightness for an electrolyte at the sites at which the connection lines (11, 21, 31) pass through. The sensor (9) includes a housing (4), containing at least one measuring electrode (1) and a counterelectrode (2) and with electric connection lines (11, 21, 31) from the electrodes (1, 2, 3) to a measuring unit (8) arranged outside the housing (4). The electric connection lines (11, 21, 31) include carbon nanotubes (CNT, Carbon Nanotubes) at least in some sections in the housing (4) in the area of the electrolyte wetting.Type: GrantFiled: September 17, 2007Date of Patent: July 19, 2011Assignee: Drägerwerk AG & Co. KGaAInventor: Frank Mett
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Publication number: 20110167894Abstract: Disclosed is a devvpoinl and icing condition detection apparatus that includes a sensor, a signal conditioner and a data acquisition device. The sensor is a carbon nanotube sensor having a resistance that varies in proportion to a change in humidity of a gas flow across the sensor.Type: ApplicationFiled: September 8, 2009Publication date: July 14, 2011Inventor: Vladimir Samuilov