Nanosheet Or Quantum Barrier/well (i.e., Layer Structure Having One Dimension Or Thickness Of 100 Nm Or Less) Patents (Class 977/755)
Cross-Reference Art Collections
Superlattice with graded effective bandgap (e.g., "chirp-graded" superlattice, etc.) (Class 977/760)
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Patent number: 12244305Abstract: Methods, systems, and apparatus for measuring the dispersive shift or linewidth of a resonator coupled to a qubit. In one aspect, a method includes the actions of: generating resonator response data, comprising, for each of two computational states of the qubit: for each of multiple qubit drive frequencies: for each of multiple resonator drive frequencies: preparing the qubit in the computational state; applying a first drive pulse with the resonator drive frequency to the resonator, applying a second drive pulse with the qubit drive frequency to the qubit; measuring the state of the qubit; and processing the generated resonator response data to determine the dispersive shift or linewidth of the resonator.Type: GrantFiled: June 27, 2019Date of Patent: March 4, 2025Assignee: Google LLCInventors: Daniel Thomas Sank, Zijun Chen
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Patent number: 12165008Abstract: Among other things, an apparatus comprises quantum units; and couplers among the quantum units. Each coupler is configured to couple a pair of quantum units according to a quantum Hamiltonian characterizing the quantum units and the couplers. The quantum Hamiltonian includes quantum annealer Hamiltonian and a quantum governor Hamiltonian. The quantum annealer Hamiltonian includes information bearing degrees of freedom. The quantum governor Hamiltonian includes non-information bearing degrees of freedom that are engineered to steer the dissipative dynamics of information bearing degrees of freedom.Type: GrantFiled: October 10, 2023Date of Patent: December 10, 2024Assignee: Google LLCInventors: Masoud Mohseni, Hartmut Neven
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Patent number: 11897772Abstract: The present disclosure provides a simple and inexpensive method to produce reduced Graphene oxide (rGO). The method comprises conversion of low-cost carbon sources such as coal tar pitch (industrial by-product) into a high quality rGO wherein said conversion is carried out by annealing the carbon source at two different temperatures. The rGO is obtained at high yields by employing the present method and the obtained rGO demonstrates high conductivity and good surface area along with very low oxygen content.Type: GrantFiled: May 22, 2019Date of Patent: February 13, 2024Assignees: TATA STEEL LIMITED, CENTRE FOR NANO AND SOFT MATTER SCIENCESInventors: Anand Sen, Sumitesh Das, Shyam Kumar Choudhary, Giridhar Udapi Rao Kulkarni, Murali Gedda, Rajashekhar Ningappa Pujar
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Patent number: 11808638Abstract: A new and useful thermochromic liquid crystal Indicator is disclosed that provides an indication of the temperature of the Object to which the Indicator is attached, and is an improvement over the existing art for at least the fact that the impact of ambient air circulating around the Indicator and circulating the Object is reduced by several means, such as i) the use of a novel cap or housing to isolate the liquid crystal Structure from ambient air and from touching or ii) using a novel liquid crystal formulation that reduces the reaction time of the thermochromic liquid crystal contained in the Indicator to changing temperatures conveyed by the ambient air. The new and useful liquid crystal Indicator can also employ either a template or a colored filter as a mask that narrows the colors and narrows the range of temperatures indicated by the Indicator.Type: GrantFiled: June 18, 2021Date of Patent: November 7, 2023Assignee: PacNow, LLCInventors: Kevin K. Diehn, Bani H. Cipriano, Rei S. Ambrozy
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Patent number: 11809963Abstract: Among other things, an apparatus comprises quantum units; and couplers among the quantum units. Each coupler is configured to couple a pair of quantum units according to a quantum Hamiltonian characterizing the quantum units and the couplers. The quantum Hamiltonian includes quantum annealer Hamiltonian and a quantum governor Hamiltonian. The quantum annealer Hamiltonian includes information bearing degrees of freedom. The quantum governor Hamiltonian includes non-information bearing degrees of freedom that are engineered to steer the dissipative dynamics of information bearing degrees of freedom.Type: GrantFiled: March 28, 2022Date of Patent: November 7, 2023Assignee: Google LLCInventors: Masoud Mohseni, Hartmut Neven
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Patent number: 11797874Abstract: The systems, devices, articles, and methods described herein generally relate to analog computers, for example quantum processors comprising qubits, couplers, and, or cavities. Analog computers, for example quantum processor based computers, are the subject of various sources of error which can hinder operation, potentially reducing computational accuracy and speed. Sources of error can be broadly characterized, for example as i) a background susceptibility do to inherently characteristics of the circuitry design, ii) as an h/J ratio imbalance, iii) bit flip errors, iv) fidelity, and v) Anderson localization, and various combinations of the aforesaid.Type: GrantFiled: July 28, 2021Date of Patent: October 24, 2023Assignee: 1372934 B.C. LTD.Inventors: Paul I. Bunyk, James King, Murray C. Thom, Mohammad H. Amin, Anatoly Smirnov, Sheir Yarkoni, Trevor M. Lanting, Andrew D. King, Kelly T. R. Boothby
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Patent number: 11728458Abstract: A semiconductor light-emitting device includes a semiconductor substrate and a light-emitting layer on the semiconductor substrate. The light-emitting layer includes at least one quantum well layer and barrier layers alternately stacked. The quantum well layer includes a first semiconductor mixed crystal having a larger lattice constant than a lattice constant of the semiconductor substrate. The barrier layers each includes a second semiconductor mixed crystal having a smaller lattice constant than the lattice constant of the semiconductor substrate. The quantum well layer includes a first strain amount that is a product of the layer thickness thereof and a first strain ratio. The barrier layer each includes a second strain amount that is a product of the layer thickness thereof and a second strain ratio. The quantum well layer and the barrier layers are provided such that the first strain amount is greater than the second strain amount.Type: GrantFiled: August 30, 2021Date of Patent: August 15, 2023Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventor: Hideto Sugawara
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Patent number: 11696707Abstract: A spectroscopic laser sensor based on hybrid III-V/IV system-on-a-chip technology. The laser sensor is configured to either (i) be used with a fiber-optic probe connected to an intravenous/intra-arterial optical catheter for direct invasive blood analyte concentration level measurement or (ii) be used to measure blood analyte concentration level non-invasively through an optical interface attached, e.g., to the skin or fingernail bed of a human. The sensor includes a III-V gain-chip, e.g., an AlGaInAsSb/GaSb based gain-chip, and a photonic integrated circuit, with laser wavelength filtering, laser wavelength tuning, laser wavelength monitoring, laser signal monitoring and signal output sections realized on a chip by combining IV-based semiconductor substrates and flip-chip AlGa1-nAsSb/GaSb based photodetectors and embedded electronics for signal processing.Type: GrantFiled: August 15, 2022Date of Patent: July 11, 2023Assignee: Brolis Sensor Technology, UAB et al.Inventors: Augustinas Vizbaras, Kristijonas Vizbaras, Ieva Simonyte, Günther Roelkens
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Patent number: 11527953Abstract: A phase locked loop having a charge pump is described. The charge pump relies on close matching of FETs (Field Effect Transistor) electrical parameters to FETs in a current reference circuit. To achieve close matching of FET electrical performance, FEOL (Front End Of Line), comprising all FET shapes, of the current pump is identical in shapes and layout to the current reference circuit. BEOL (Back End Of Line) differs between the charge pump and the current reference circuit. The charge pump and the current reference circuit are arranged in a row. A shield circuit having FEOL shapes and layout identical to the current pump may be placed at each end of the row.Type: GrantFiled: October 21, 2021Date of Patent: December 13, 2022Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James Strom, John Borkenhagen, Ann Chen Wu, Erik Unterborn, Grant P. Kesselring
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Patent number: 11437615Abstract: A nanoparticle and a method for fabricating the nanoparticle utilize a decomposable material yoke located within permeable organic polymer material shell and separated from the permeable organic polymer material shell by a void space. When the decomposable material yoke comprises a sulfur material and the permeable organic polymer material shell comprises a material permeable to both a sulfur material vapor and a lithium ion within a battery electrolyte the nanoparticle may be used within an electrode for a Li/S battery absent the negative effects of battery electrode materials expansion.Type: GrantFiled: March 10, 2021Date of Patent: September 6, 2022Assignee: CORNELL UNIVERSITYInventors: Yingchao Yu, Weidong Zhou, Hao Chen, Hector D. Abruna
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Patent number: 9299473Abstract: An electrically conductive structure including a substrate material and graphene. A first cross-section taken along an axial direction of the electrically conductive structure includes a plurality of layers of the substrate material and at least one internal layer of the graphene alternatingly disposed between the plurality of layers of the substrate material. A method of tailoring an amount of graphene in an electrically conductive structure is also included.Type: GrantFiled: June 11, 2013Date of Patent: March 29, 2016Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Wayde R. Schmidt, Sameh Dardona
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Patent number: 9023308Abstract: Methods of ex situ synthesis of graphene, graphene oxide, reduced graphene oxide, other graphene derivative structures and nanoparticles useful as polishing agents are disclosed. Compositions and methods for polishing, hardening, protecting, adding longevity to, and lubricating moving and stationary parts in devices and systems, including, but not limited to, engines, turbos, turbines, tracks, races, wheels, bearings, gear systems, armor, heat shields, and other physical and mechanical systems employing machined interacting hard surfaces through the use of nano-polishing agents formed in situ from lubricating compositions and, in some cases, ex situ and their various uses are also disclosed.Type: GrantFiled: April 29, 2014Date of Patent: May 5, 2015Assignee: Peerless Worldwide, LLCInventor: Richard S. Shankman
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Patent number: 9019595Abstract: Optical resonators that are enhanced with photoluminescent phosphors and are designed and configured to output light at one or more wavelengths based on input/pump light, and systems and devices made with such resonators. In some embodiments, the resonators contain multiple optical resonator cavities in combination with one or more photoluminescent phosphor layers or other structures. In other embodiments, the resonators are designed to simultaneously resonate at the input/pump and output wavelengths. The photoluminescent phosphors can be any suitable photoluminescent material, including semiconductor and other materials in quantum-confining structures, such as quantum wells and quantum dots, among others.Type: GrantFiled: March 26, 2012Date of Patent: April 28, 2015Assignee: VerLASE Technologies LLCInventor: Ajaykumar R. Jain
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Patent number: 9011649Abstract: The subject of the invention is a process for obtaining a substrate coated on at least part of its surface with at least one film of oxide of a metal M the physical thickness of which is 30 nm or less, said oxide film not being part of a multilayer comprising at least one silver film, said process comprising the following steps: at least one intermediate film of a material chosen from the metal M, a nitride of the metal M, a carbide of the metal M and an oxygen-substoichiometric oxide of the metal M is deposited by sputtering, said intermediate film not being deposited above or beneath a titanium-oxide-based film, the physical thickness of said intermediate film being 30 nm or less; and at least part of the surface of said intermediate film is oxidized using a heat treatment, during which said intermediate film is in direct contact with an oxidizing atmosphere, especially air, the temperature of said substrate during said heat treatment not exceeding 150° C.Type: GrantFiled: September 30, 2010Date of Patent: April 21, 2015Assignee: Saint-Gobain Glass FranceInventors: Andriy Kharchenko, Anne Durandeau, Nicolas Nadaud
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Patent number: 8999609Abstract: Provided are a phase shift mask blank that is improved in the irradiation durability of a light-semitransmissive film (phase shift film), made of a material containing mainly a transition metal, silicon, and nitrogen, to exposure light having a wavelength of 200 nm or less and thus can improve the mask lifetime, a method of manufacturing such a phase shift mask blank, and a phase shift mask. The phase shift mask blank is used for manufacturing a phase shift mask adapted to be applied with ArF excimer laser exposure light. The phase shift mask blank has a light-semitransmissive film on a transparent substrate. The light-semitransmissive film is an incomplete nitride film containing mainly a transition metal, silicon, and nitrogen. The content ratio of the transition metal to the transition metal and the silicon in the light-semitransmissive film is less than 9%.Type: GrantFiled: April 8, 2011Date of Patent: April 7, 2015Assignee: Hoya CorporationInventors: Osamu Nozawa, Hiroaki Shishido, Kazuya Sakai
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Patent number: 8991028Abstract: A metal matrix composite is disclosed that includes graphene nanoplatelets dispersed in a metal matrix. The composite provides for improved thermal conductivity. The composite may be formed into heat spreaders or other thermal management devices to provide improved cooling to electronic and electrical equipment and semiconductor devices.Type: GrantFiled: August 13, 2012Date of Patent: March 31, 2015Assignee: The Boeing CompanyInventors: Namsoo Paul Kim, James Ping Huang
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Patent number: 8987016Abstract: The invention relates to light-emitting devices, and related components, systems and methods. In one aspect, the present invention is related to light emitting diode (LED) light extraction efficiency. A non-limiting example, the application teaches a method for improving light emitting diode (LED) extraction efficiency, by providing a nano-rod light emitting diode; providing quantum wells; and reducing the size of said nano-rod LED laterally in the quantum-well plane (x and y), thereby improving LED extraction efficiency.Type: GrantFiled: August 16, 2011Date of Patent: March 24, 2015Assignee: Rensselaer Polytechnic InstituteInventors: Mei-Ling Kuo, Shawn-Yu Lin, Yong Sung Kim, Mei-Li Hsieh
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Patent number: 8986641Abstract: In some embodiments, the present invention provides amphiphilic nanosheets that comprise lamellar crystals with at least two regions: a first hydrophilic region, and a second hydrophobic region. In some embodiments, the amphiphilic nanosheets of the present invention also comprise a plurality of functional groups that are appended to the lamellar crystals. In some embodiments, the functional groups are hydrophobic functional groups that are appended to the second region of the lamellar crystals. In some embodiments, the lamellar crystals comprise ?-zirconium phosphates. Additional embodiments of the present invention pertain to methods of making the aforementioned amphiphilic nanosheets. Such methods generally comprise appending one or more functional groups to a stack of lamellar crystals; and exfoliating the stack of lamellar crystals for form the amphiphilic nanosheets.Type: GrantFiled: March 21, 2013Date of Patent: March 24, 2015Assignee: The Texas A&M University SystemInventors: Zhengdong Cheng, Andres F. Mejia, Agustin Diaz, Abraham Clearfield, Mahboobul S Mannan, Ya-Wen Chang
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Publication number: 20150078703Abstract: Described are embodiments of hybrid optical apparatuses including anti-resonant optical waveguides, and methods for making such apparatuses and systems. In one embodiment, a hybrid optical apparatus may include a first semiconductor region including an active region of one or more layers of semiconductor materials and a second semiconductor region coupled with the first semiconductor region. The second semiconductor region may include an optical waveguide configured to transmit light inputted by a light input component. The optical waveguide may be defined by a first trench disposed on a first side of the waveguide, and a second trench disposed on a second side of the waveguide opposite the first side. A width of each trench may vary along a length of the apparatus to control optical power density of the light transmitted along the optical waveguide. Other embodiments may be described and/or claimed.Type: ApplicationFiled: September 16, 2013Publication date: March 19, 2015Inventors: Hyundai Park, Richard Jones
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Patent number: 8980425Abstract: The present invention relates to a bioactive material and to a method of producing a bioactive material which is suitable for use as an implant or for use as a bone substitute for repairing bone.Type: GrantFiled: August 19, 2008Date of Patent: March 17, 2015Assignee: Smith & Nephew PLCInventors: Graeme Howling, Paul Gunning
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Patent number: 8968989Abstract: The present invention provides novel methods of fabricating microelectronics structures, and the resulting structures formed thereby, using EUV lithographic processes. The method involves utilizing an assist layer immediately below the photoresist layer. The assist layer can either be directly applied to the substrate, or it can be applied to any intermediate layer(s) that may be applied to the substrate. The preferred assist layers are formed from spin-coatable, polymeric compositions. The inventive method allows reduced critical dimensions to be achieved with improved dose-to-size ratios, while improving adhesion and reducing or eliminating pattern collapse issues.Type: GrantFiled: November 20, 2012Date of Patent: March 3, 2015Assignee: Brewer Science Inc.Inventors: Tantiboro Ouattara, Carlton Washburn, Vandana Krishnamurthy, Douglas Guerrero, Aline Collin
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Patent number: 8968545Abstract: Described are devices and methods for forming one or more nanomembranes including electroactive nanomembranes within a nanowell or nanotube, or combinations thereof, in a support material. Nanopores/nanochannels can be formed by the electroactive nanomembrane within corresponding nanowells. The electroactive nanomembrane is capable of controllably altering a dimension, a composition, and/or a variety of properties in response to electrical stimuli. Various embodiments also include devices/systems and methods for using the nanomembrane-containing devices for molecular separation, purification, sensing, etc.Type: GrantFiled: April 2, 2012Date of Patent: March 3, 2015Assignee: Lux Bio Group, Inc.Inventor: Gordon Holt
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Patent number: 8962186Abstract: A lithium iron phosphate hierarchical structure includes a plurality of lithium iron phosphate nano sheets and has an overall spherical-shaped structure. The overall spherical-shaped structure is constructed by a plurality of lithium iron phosphate nano sheets layered together. A method for making a lithium iron phosphate hierarchical structure includes several steps. In the method, a lithium ion contained liquid solution, a ferrous ion contained liquid solution, and a phosphate ion contained liquid solution are respectively provided. A concentration of lithium ions in the lithium ion contained liquid solution is equal to or larger than 1.8 mol/L. The lithium ion contained liquid solution, the ferrous ion contained liquid solution, and the phosphate ion contained liquid solution are mixed to form a liquid mixture. The liquid mixture is heated in a sealed reactor to form the lithium iron phosphate hierarchical structure.Type: GrantFiled: April 27, 2012Date of Patent: February 24, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Wen-Ting Sun, Jian-Jun Li, Xian-Kun Huang, Jian Gao
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Patent number: 8951444Abstract: In a method for functionalizing a carbon nanotube surface, the nanotube surface is exposed to at least one vapor including at least one functionalization species that non-covalently bonds to the nanotube surface, providing chemically functional groups at the nanotube surface, producing a functionalized nanotube surface. A functionalized nanotube surface can be exposed to at least one vapor stabilization species that reacts with the functionalization layer to form a stabilization layer that stabilizes the functionalization layer against desorption from the nanotube surface while providing chemically functional groups at the nanotube surface, producing a stabilized nanotube surface. The stabilized nanotube surface can be exposed to at least one material layer precursor species that deposits a material layer on the stabilized nanotube surface.Type: GrantFiled: June 22, 2010Date of Patent: February 10, 2015Assignee: President and Fellows of Harvard CollegeInventors: Roy G. Gordon, Damon B. Farmer
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Patent number: 8936681Abstract: A method for making an epitaxial structure is provided. The method includes the following steps. A substrate is provided. The substrate has an epitaxial growth surface for growing epitaxial layer. A carbon nanotube layer is placed on the epitaxial growth surface. An epitaxial layer is epitaxially grown on the epitaxial growth surface. The carbon nanotube layer is removed. The carbon nanotube layer can be removed by heating.Type: GrantFiled: October 18, 2011Date of Patent: January 20, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yang Wei, Shou-Shan Fan
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Patent number: 8927453Abstract: The present invention provides molybdenum and tungsten nanostructures, for example, nanosheets and nanoparticles, and methods of making and using same, including using such nanostructures as catlysts for hydrogen evolution reactions.Type: GrantFiled: April 22, 2013Date of Patent: January 6, 2015Assignee: Brookhaven Science Associates, LLCInventors: Sasaki Kotaro, Wei-Fu Chen, James T. Muckerman, Radoslav R. Adzic
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Patent number: 8921084Abstract: The present invention answers the demands of power generating device and biosensor development and provides a flexible, free-standing type protein containing carbon nanotube film, and a sensor and power generating device each equipped with the carbon nanotube film as an electrode. According to the present invention a carbon nanotube free standing film is provided including a carbon nanotube aggregate formed by aggregating a plurality of carbon nanotubes, and a plurality of enzymes included between the plurality of carbon nanotubes. The carbon nanotube film may include a different protein to the enzyme and may include a surfactant agent between the plurality of carbon nanotubes.Type: GrantFiled: December 26, 2012Date of Patent: December 30, 2014Assignees: Tohoku University, National Institute of Advanced Industrial Science and TechnologyInventors: Matsuhiko Nishizawa, Takeo Miyake, Syuhei Yoshino, Takeo Yamada, Kenji Hata
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Patent number: 8912526Abstract: An electron multiplier for a system for detecting electromagnetic radiation or an ion flow is disclosed. The multiplier includes at least one active structure intended to receive a flow of incident electrons, and to emit in response a flow of electrons called secondary electrons. The active structure includes a substrate on which is positioned a thin nanodiamond layer formed from diamond particles the average size of which is less than or equal to about 100 nm.Type: GrantFiled: September 9, 2011Date of Patent: December 16, 2014Assignee: Photonis FranceInventors: Gert Nutzel, Pascal Lavoute, Richard B. Jackman
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Patent number: 8895372Abstract: A three-dimensional (3D) integrated circuit (IC) structure includes a first layer of graphene formed over a substrate; a first level of one or more active devices formed using the first layer of graphene; an insulating layer formed over the first level of one or more active devices; a second layer of graphene formed over the insulating layer; and a second level of one or more active devices formed using the second layer of graphene, the second level of one or more active devices electrically interconnected with the first level of one or more active devices.Type: GrantFiled: July 25, 2012Date of Patent: November 25, 2014Assignee: International Business Machines CorporationInventors: Dechao Guo, Shu-Jen Hen, Chung-Hsun Lin, Ning Su
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Patent number: 8895105Abstract: A method of growing carbon nanomaterials on a substrate wherein the substrate is exposed to an oxidizing gas; a seed material is deposited on the substrate to form a receptor for a catalyst on the surface of said substrate; a catalyst is deposited on the seed material by exposing the receptor on the surface of the substrate to a vapor of the catalyst; and substrate is subjected to chemical vapor deposition in a carbon containing gas to grow carbon nanomaterial on the substrate.Type: GrantFiled: June 12, 2012Date of Patent: November 25, 2014Assignee: University of DaytonInventors: Khalid Lafdi, Lingchuan Li, Matthew C. Boehle, Alexandre Lagounov
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Patent number: 8891158Abstract: A laser frequency converter includes a first substrate material forming a first planar surface that includes a first nonlinear material situated along a portion of the first planar surface of the first substrate material to perform a frequency conversion of a laser signal. The frequency converter includes a second substrate material forming a second planar surface and separated by a distance from the first planar surface of the first substrate material. The second substrate material includes a second nonlinear material situated along a portion of the second planar surface of the second substrate material to perform the frequency conversion of the laser signal in conjunction with the first non-linear material. The second nonlinear material is offset from the first nonlinear material along an axis of propagation for the laser signal.Type: GrantFiled: June 12, 2013Date of Patent: November 18, 2014Assignee: Northrup Grumman Systems CorporationInventors: Hiroshi Komine, Joseph M. Fukumoto, Chun-Ching Shih, William H. Long
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Publication number: 20140332056Abstract: A device for generating electric power and absorbing heat is revealed. It comprises a substrate, a plurality of solar chips, a broad spectrum light absorbing layer and a light scattering film on the substrate and beside the solar chips, a hot melt adhesive film, and a transparent cover plate.Type: ApplicationFiled: May 8, 2014Publication date: November 13, 2014Applicant: SOUTHERN TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: RUEI-TANG CHEN, JHIH-WUN LAI, RU-SYUAN WU, JYUN-FU SHIH
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Patent number: 8865113Abstract: Methods of ex situ synthesis of graphene, graphene oxide, reduced graphene oxide, other graphene derivative structures and nanoparticles useful as polishing agents are disclosed. Compositions and methods for polishing, hardening, protecting, adding longevity to, and lubricating moving and stationary parts in devices and systems, including, but not limited to, engines, turbos, turbines, tracks, races, wheels, bearings, gear systems, armor, heat shields, and other physical and mechanical systems employing machined interacting hard surfaces through the use of nano-polishing agents formed in situ from lubricating compositions and, in some cases, ex situ and their various uses are also disclosed.Type: GrantFiled: March 15, 2012Date of Patent: October 21, 2014Assignee: Peerless Worldwide, LLCInventor: Richard S. Shankman
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Patent number: 8866005Abstract: A new solar cell structure called a heterojunction barrier solar cell is described. As with previously reported quantum-well and quantum-dot solar cell structures, a layer of narrow band-gap material, such as GaAs or indium-rich InGaP, is inserted into the depletion region of a wide band-gap PN junction. Rather than being thin, however, the layer of narrow band-gap material is about 400-430 nm wide and forms a single, ultrawide well in the depletion region. Thin (e.g., 20-50 nm), wide band-gap InGaP barrier layers in the depletion region reduce the diode dark current. Engineering the electric field and barrier profile of the absorber layer, barrier layer, and p-type layer of the PN junction maximizes photogenerated carrier escape. This new twist on nanostructured solar cell design allows the separate optimization of current and voltage to maximize conversion efficiency.Type: GrantFiled: October 15, 2009Date of Patent: October 21, 2014Assignee: Kopin CorporationInventor: Roger E. Welser
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Patent number: 8840803Abstract: A nanocomposite fluid includes a fluid medium; and a nanoparticle composition comprising nanoparticles which are electrically insulating and thermally conductive. A method of making the nanocomposite fluid includes forming boron nitride nanoparticles; dispersing the boron nitride nanoparticles in a solvent; combining the boron nitride nanoparticles and a fluid medium; and removing the solvent.Type: GrantFiled: February 2, 2012Date of Patent: September 23, 2014Assignee: Baker Hughes IncorporatedInventors: Oleg A. Mazyar, Ashley Leonard, Joshua C. Falkner
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Publication number: 20140268306Abstract: A laser frequency converter includes a first substrate material forming a first planar surface that includes a first nonlinear material situated along a portion of the first planar surface of the first substrate material to perform a frequency conversion of a laser signal. The frequency converter includes a second substrate material forming a second planar surface and separated by a distance from the first planar surface of the first substrate material. The second substrate material includes a second nonlinear material situated along a portion of the second planar surface of the second substrate material to perform the frequency conversion of the laser signal in conjunction with the first non-linear material. The second nonlinear material is offset from the first nonlinear material along an axis of propagation for the laser signal.Type: ApplicationFiled: June 12, 2013Publication date: September 18, 2014Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Hiroshi KOMINE, Joseph M. FUKUMOTO, Chun-Ching SHIH, William H. LONG
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Publication number: 20140247477Abstract: An integrated optical structure includes at least one optical isolator, having a magneto-optical layer, associated with at least one SOA optical amplifier having a waveguide having an n-doped semiconductor layer, a p-doped semiconductor layer, and an active area disposed between the n-doped semiconductor layer and the p-doped semiconductor layer. The optical isolator is disposed between an SOI base and the SOA optical amplifier's waveguide. The optical isolator's magneto-optical layer is disposed between a lower insulating layer and an upper insulating layer. The optical isolator's magneto-optical layer may be a layer of ferromagnetic metallic material, such as a Fe—Co metallic alloy, or a magnetic oxide layer. An optical device includes at least one integrated optical structure.Type: ApplicationFiled: October 17, 2012Publication date: September 4, 2014Inventors: Guang-Hua Duan, Francois Brillouet, Jean-Louis Gentner
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Publication number: 20140242389Abstract: A process of growth in the thickness of at least one facet of a colloidal inorganic sheet, by sheet is meant a structure having at least one dimension, the thickness, of nanometric size and lateral dimensions great compared to the thickness, typically more than 5 times the thickness. The process allows the deposition of at least one monolayer of atoms on at least one inorganic colloidal sheet, this monolayer being constituted of atoms of the type of those contained or not in the sheet. Homostructured and heterostructured materials resulting from such process as well as the applications of the materials are also described. By homostructured is meant a material of homogeneous composition in the thickness and by heterostructured is meant a material of heterogeneous composition in the thickness.Type: ApplicationFiled: October 19, 2012Publication date: August 28, 2014Applicant: NEXDOTInventor: Benoit Mahler
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Publication number: 20140241660Abstract: A monolithic semiconductor device that includes a waveguide structure optically coupled to an optical resonator. The optical resonator is adapted to process light at a predetermined wavelength. The optical resonator includes a closed loop waveguide having a plurality of straight sections that are optically coupled together by bend sections.Type: ApplicationFiled: August 17, 2012Publication date: August 28, 2014Inventor: Geoff W. Taylor
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Patent number: 8814986Abstract: A protected solid adsorbent is disclosed that includes a solid adsorbent substrate and a surface layer at least partially coating the solid adsorbent substrate, the surface layer being generally permeable to an active agent. Additionally, a process for protecting a solid adsorbent and an adsorption system that includes a vessel containing the protected solid adsorbent is provided.Type: GrantFiled: July 1, 2013Date of Patent: August 26, 2014Assignee: ExxonMobil Research and Egineering CompanyInventors: Mohsen S Yeganeh, Bhupender S. Minhas, Tahmid I Mizan, Sufang Zhao, Richard W. Flynn
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Patent number: 8802288Abstract: Current collectors and methods are provided that relate to electrodes that are useful in lithium polymer electrochemical cells. The provided current collectors include a metallic substrate, a substantially uniform nano-scale carbon coating, and an active electrode material. The coating has a maximum thickness of less than about 200 nanometers.Type: GrantFiled: April 12, 2012Date of Patent: August 12, 2014Assignee: 3M Innovative Properties CompanyInventors: Ranjith Divigalpitiya, Mary I. Buckett
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Patent number: 8804101Abstract: A lightweight, low volume, inexpensive LADAR sensor incorporating 3-D focal plane arrays is adapted specifically for personal electronic appliances. The present invention generates, at high speed, 3-D image maps and object data at short to medium ranges. The techniques and structures described may be used to extend the range of long range systems as well, though the focus is on compact, short to medium range ladar sensors suitable for use in personal electronic devices. 3-D focal plane arrays are used in a variety of physical configurations to provide useful new capabilities to a variety of personal electronic appliances.Type: GrantFiled: March 16, 2012Date of Patent: August 12, 2014Assignee: Advanced Scientific Concepts, Inc.Inventors: Joseph Spagnolia, Howard Bailey, Patrick Gilliland, Barton Goldstein, Brad Short, Laurent Heughebaert, Roger Stettner
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Patent number: 8778226Abstract: A photoluminescent or electroluminescent system and method of making a non-luminescent nanostructured material into such a luminescent system is presented. The method of preparing the luminescent system, generally, comprises the steps of modifying the surface of a nanostructured material to create isolated regions to act as luminescent centers and to create a charge imbalance on the surface; applying more than one polar molecule to the charged surface of the nanostructured material; and orienting the polar molecules to compensate for the charge imbalance on the surface of the nanostructured material. The compensation of the surface charge imbalance by the polar molecules allows the isolated regions to exhibit luminescence.Type: GrantFiled: September 30, 2010Date of Patent: July 15, 2014Inventors: Ilia N. Ivanov, Alexander A. Puretzky, Bin Zhao, David B. Geohegan, David J. Styers-Barnett, Hui Hu
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Patent number: 8765601Abstract: Embodiments of the invention provide methods for forming materials on a substrate used for metal gate and other applications. In one embodiment, a method includes forming a cobalt stack over a barrier layer disposed on a substrate by depositing a cobalt layer during a deposition process, exposing the cobalt layer to a plasma to form a plasma-treated cobalt layer during a plasma process, and repeating the cobalt deposition process and the plasma process to form the cobalt stack containing a plurality of plasma-treated cobalt layers. The method further includes exposing the cobalt stack to an oxygen source gas to form a cobalt oxide layer from an upper portion of the cobalt stack during a surface oxidation process and heating the remaining portion of the cobalt stack to a temperature within a range from about 300° C. to about 500° C. to form a crystalline cobalt film during a thermal annealing crystallization process.Type: GrantFiled: August 1, 2013Date of Patent: July 1, 2014Assignee: Applied Materials, Inc.Inventors: Yu Lei, Xinyu Fu, Anantha Subramani, Seshadri Ganguli, Srinivas Gandikota
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Publication number: 20140178674Abstract: A topological insulator structure includes an insulating substrate and a magnetically doped TI quantum well film located on the insulating substrate. A material of the magnetically doped TI quantum well film is represented by a chemical formula of Cry(BixSb1-x)2-yTe3. 0.05<x<0.3, 0<y<0.3, and 1:2<x:y<2:1. The magnetically doped TI quantum well film is in 3 QL to 5 QL.Type: ApplicationFiled: October 16, 2013Publication date: June 26, 2014Applicants: Institute of Physics, Chinese Academy of Sciences, Tsinghua UniversityInventors: QI-KUN XUE, KE HE, XU-CUN MA, XI CHEN, LI-LI WANG, CUI-ZU CHANG, XIAO FENG, YAO-YI LI, JIN-FENG JIA
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Patent number: 8758962Abstract: In one embodiment, the invention is a method and apparatus for sub-pellicle defect reduction on photomasks. One embodiment of a photomask for use in photolithography includes a substrate on which a pattern is formed, the substrate having a frontside and an opposite backside, and a protective coating formed on at least one of the frontside and the backside, the protective coating comprising silicon-based compound.Type: GrantFiled: April 10, 2012Date of Patent: June 24, 2014Assignee: International Business Machines CorporationInventors: Jay S. Burnham, Frances A. Houle, Louis M. Kindt
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Patent number: 8753540Abstract: The present invention relates to a method for preparing graphene, and more particularly to a method of preparing graphene sheets, which can prepare graphene sheets from a turbostratic graphitic structure such as carbon fiber in higher yield without using a strong oxidizing agent, and to graphene sheets prepared thereby.Type: GrantFiled: April 23, 2010Date of Patent: June 17, 2014Assignee: Industry Foundation of Chonnam National UniversityInventors: Il Kwon Oh, Vadahanambi Sridhar, Jin Han Jeon
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Publication number: 20140162130Abstract: The present invention is directed to compositions comprising free standing and stacked assemblies of two dimensional crystalline solids, and methods of making the same.Type: ApplicationFiled: December 3, 2013Publication date: June 12, 2014Applicant: DREXEL UNIVERSITYInventors: MICHEL W. BARSOUM, YURY GOGOTSI, MICHAEL NAGUIB ABDELMALAK, OLHA MASHTALIR
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Publication number: 20140154621Abstract: The disclosure relates generally to toner additives, and in particular, toner additives that provide desired higher toner charge and low relative humidity (RH) sensitivity. The toner additives comprise titania nanotubes or titania nanosheets in combination with or in place of the commonly used anatase or rutile crystalline titania.Type: ApplicationFiled: December 5, 2012Publication date: June 5, 2014Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: RICHARD P. VEREGIN, Qingbin Li, Andriy Kovalenko, Sergey Gusarov
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Publication number: 20140155253Abstract: Two methods of producing nano-pads of catalytic metal for growth of single walled carbon nanotubes (SWCNT) are disclosed. Both methods utilize a shadow mask technique, wherein the nano-pads are deposited from the catalytic metal source positioned under the angle toward the vertical walls of the opening, so that these walls serve as a shadow mask. In the first case, the vertical walls of the photo-resist around the opening are used as a shadow mask, while in the second case the opening is made in a thin layer of the dielectric layer serving as a shadow mask. Both methods produce the nano-pad areas sufficiently small for the growth of the SWCNT from the catalytic metal balls created after high temperature melting of the nano-pads.Type: ApplicationFiled: February 21, 2012Publication date: June 5, 2014Inventor: Alexander Kastalsky