Etching To Produce Porous Or Perforated Article Patents (Class 216/56)
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Patent number: 8293124Abstract: A method of multi-stage substrate etching is provided.Type: GrantFiled: March 4, 2008Date of Patent: October 23, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Chan Wook Baik, Seog Woo Hong, Jong Seok Kim, Seong Chan Jun, Sun Il Kim
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Patent number: 8294034Abstract: A circuit board including a circuit substrate, a first dielectric layer, an antagonistic activation layer, a first conductive layer, a second conductive layer and a second dielectric layer is provided. The circuit substrate has a first surface and a first circuit layer. The first dielectric layer is disposed on the circuit substrate and covers the first surface and the first circuit layer. The first dielectric layer has a second surface, at least a blind via extending from the second surface to the first circuit layer and an intaglio pattern. The antagonistic activation layer is disposed on the second surface of the dielectric layer. The first conductive layer is disposed in the blind via. The second conductive layer is disposed in the intaglio pattern and the blind via and covers the first conductive layer. The second conductive layer is electrically connected with the first circuit layer via the first conductive layer.Type: GrantFiled: May 28, 2010Date of Patent: October 23, 2012Assignee: Unimicron Technology Corp.Inventors: Tzyy-Jang Tseng, Shu-Sheng Chiang, Tsung-Yuan Chen
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Patent number: 8273665Abstract: A method of making a nanoparticle array that includes replicating a dimension of a self-assembled film into a dielectric film, to form a porous dielectric film, conformally depositing a material over said porous dielectric film, and anisotropically and selectively etching said deposited material.Type: GrantFiled: August 20, 2009Date of Patent: September 25, 2012Assignee: International Business Machines CorporationInventors: Charles T. Black, Kathryn Wilder Guarini
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Publication number: 20120234794Abstract: A mold of an embodiment of the present invention has a surface that has a shape which is inverse of a surface shape of a moth-eye structure. This surface has a plurality of protrusions, a plurality of ridges extending between the plurality of protrusions via saddle portions, and a plurality of holes, each of which is defined by at least any three of the plurality of protrusions and ridges extending between the at least any three of the plurality of protrusions, and an average distance between centers of adjacent holes, p, and an average depth of the saddle portions, r, satisfy the relationship of 0.15?r/p?0.60.Type: ApplicationFiled: November 25, 2010Publication date: September 20, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Akinobu Isurugi, Kiyoshi Minoura, Tokio Taguchi, Takao Imaoku
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Patent number: 8268180Abstract: Methods for forming a nanoperforated graphene material are provided. The methods comprise forming an etch mask defining a periodic array of holes over a graphene material and patterning the periodic array of holes into the graphene material. The etch mask comprises a pattern-defining block copolymer layer, and can optionally also comprise a wetting layer and a neutral layer. The nanoperforated graphene material can consist of a single sheet of graphene or a plurality of graphene sheets.Type: GrantFiled: January 25, 2011Date of Patent: September 18, 2012Assignee: Wisconsin Alumni Research FoundationInventors: Michael S. Arnold, Padma Gopalan, Nathaniel S. Safron, Myungwoong Kim
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Publication number: 20120199551Abstract: Selective etching techniques are used to manufacture a basic filtration element, which can then be used as a basis for constructing various devices for different applications. In this process, sheets of etchable material are etched from one or both sides of that sheet to form channels in a premasked pattern, which controls the minimum opening of the filtration element. The desired channel opening is only limited by the capability of the photochemical etching system being used. Alternatively, a filter element may be made by rolling or extruding a first sheet to form a plurality of recessed areas bordered by lands, selectively etching or punching through the recessed pattern areas, and bonding a second sheet having a plurality of etched or punched through areas to the first sheet, and, aligning the etched through areas to the second sheet with the recessed areas of the first sheet.Type: ApplicationFiled: April 18, 2012Publication date: August 9, 2012Inventor: Kleo Kwok
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Patent number: 8231797Abstract: A process for producing at least one air gap in a microstructure, which includes the supply of a microstructure comprising at least one gap filled with a sacrificial material, this gap being limited over at least part of its surface by an impermeable membrane but which may be rendered permeable by the action of a chemical etchant, this etchant also being capable of degrading the sacrificial material and the contacting of the microstructure with said chemical etchant in order to make the membrane permeable and degrade the sacrificial material, and the removal of the chemical etchant from the microstructure and in which the chemical etchant is a fluid containing hydrofluoric acid and/or ammonium fluoride. Applications include microelectronics and micro-technology.Type: GrantFiled: January 14, 2009Date of Patent: July 31, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Vincent Jousseaume, Aziz Zenasni
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Patent number: 8226836Abstract: Described herein are systems, devices, and methods relating to packaging electronic devices, for example, microelectromechanical systems (MEMS) devices, including optical modulators such as interferometric optical modulators. The interferometric modulator disclosed herein comprises a movable mirror. Some embodiments of the disclosed movable mirror exhibit a combination of improved properties compared to known mirrors, including reduced moving mass, improved mechanical properties, and reduced etch times.Type: GrantFiled: August 12, 2008Date of Patent: July 24, 2012Assignee: Qualcomm MEMS Technologies, Inc.Inventors: Clarence Chui, Jeffrey B. Sampsell
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Publication number: 20120171755Abstract: The present invention provides a method of fabricating a device having hollow nanoneedles which extend through a supporting membrane. The device can be used as a molecular delivery system.Type: ApplicationFiled: December 28, 2011Publication date: July 5, 2012Applicant: Technion Research and Development Foundation Ltd.Inventors: Elad Peer, Uri Sivan
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Patent number: 8206601Abstract: Block copolymer lithography has emerged as an alternative lithographic method to achieve large-area, high-density patterns at resolutions near or beyond the limit of conventional lithographic techniques for the formation of bit patterned media and discrete track media. In one embodiment, a structure comprises a plurality of nanostructures extending upwardly from a substrate and a porous membrane extending across upper ends of the plurality of nanostructures. A method, according to another embodiment, comprises forming a block copolymer layer on a substrate, inducing self assembly of the block copolymer layer, selectively degrading a block polymer from the block copolymer layer, forming a porous membrane over the block copolymer layer, and removing a portion of the block copolymer layer for defining a plurality of nanostructures extending upwardly from the substrate after forming the porous membrane over the block copolymer layer. Other systems and methods are disclosed as well.Type: GrantFiled: December 18, 2009Date of Patent: June 26, 2012Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Joan K. Bosworth, Elizabeth A. Dobisz, Ricardo Ruiz, Franck D. Rose dit Rose
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Patent number: 8202439Abstract: A diaphragm is formed by etching a substrate. This substrate has a first surface provided with a depression by isotropic dry etching, and a second surface opposite the first surface. Furthermore, a through-hole is formed from the depression to the second surface by anisotropic dry etching. The depression and the through-hole are formed by using one resist mask. The depression has a hemispherical shape or a semi-elliptical spherical shape.Type: GrantFiled: January 26, 2009Date of Patent: June 19, 2012Assignee: Panasonic CorporationInventors: Masaya Nakatani, Soichiro Hiraoka, Hiroshi Ushio, Akiyoshi Oshima, Hiroaki Oka, Fumiaki Emoto
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Publication number: 20120148872Abstract: An aluminum article includes a substrate comprising a surface having a plurality of pores defined therein by high energy beam etching; and a transparent vacuum deposition layer deposited on the surface and filling the pores.Type: ApplicationFiled: June 21, 2011Publication date: June 14, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: HSIN-PEI CHANG, WEN-RONG CHEN, HUANN-WU CHIANG, CHENG-SHI CHEN, HUA-YANG XU
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Publication number: 20120145650Abstract: The disclosure relates generally to nano-filters and methods of forming same, and methods of filtration. The nano-filter includes a substrate and at least one nanowire structure located between an inlet and an outlet. The nanowire structure may include a plurality of vertically stacked horizontal nanowires.Type: ApplicationFiled: December 13, 2010Publication date: June 14, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Brent A. Anderson, Andres Bryant, Edward J. Nowak, Jeffrey W. Sleight
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Publication number: 20120145007Abstract: An absorption cell includes a first absorption layer formed of a first absorbent, and a second absorption layer formed of a second absorbent having a higher density than the first absorbent and coated on the surface of the first absorption layer so as to prevent generation of dust particles from the first absorption layer. The upper surface of the first absorption layer is coated with the second absorption layer formed of the high-density absorbent, thereby preventing generation of minute dust particles and thus preventing secondary contamination.Type: ApplicationFiled: November 1, 2011Publication date: June 14, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jee Yong Kim, Rae Eun Park
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Publication number: 20120141701Abstract: A zircon body for use in glass manufacturing is provided containing zircon grains and an intergranular phase present between the zircon grains. The intergranular phase may contain silicon oxide. The body may be exposed to a halide to at least partially remove at least a majority of the silicon oxide contained in the intergranular phase from the outer portion or to at least partially remove the intergranular phase along an outer portion of the component.Type: ApplicationFiled: December 2, 2011Publication date: June 7, 2012Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Julien P. Fourcade, Olivier Citti
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Publication number: 20120134909Abstract: Porous three-dimensional networks of polyimide and porous three-dimensional networks of carbon and methods of their manufacture are described. For example, polyimide aerogels are prepared by mixing a dianhydride and a diisocyanate in a solvent comprising a pyrrolidone and acetonitrile at room temperature to form a sol-gel material and supercritically drying the sol-gel material to form the polyimide aerogel. Porous three-dimensional polyimide networks, such as polyimide aerogels, may also exhibit a fibrous morphology. Having a porous three-dimensional polyimide network undergo an additional step of pyrolysis may result in the three dimensional network being converted to a purely carbon skeleton, yielding a porous three-dimensional carbon network. The carbon network, having been derived from a fibrous polyimide network, may also exhibit a fibrous morphology.Type: ApplicationFiled: August 22, 2011Publication date: May 31, 2012Applicant: Aerogel Technologies, LLCInventors: Nicholas Leventis, Chariklia Sotiriou-Leventis, Chakkaravarthy Chidambareswarapattar
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Publication number: 20120111129Abstract: The invention relates to a device for the actively-controlled deposition of microdrops of biological solutions. The inventive device includes at least one flat silicon lever comprising a central body and an end area which forms a point, a slit or groove being disposed in said point. The invention is characterized in that it also comprises at least one metallic track which is disposed on one face of the central body and which runs alongside said slit or groove at least partially. The invention also relates to a method of producing the inventive device and a method for the active-controlled deposition and sampling of microdrops of biological solutions using said device.Type: ApplicationFiled: November 14, 2011Publication date: May 10, 2012Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Christian Bergaud, Matthieu Guirardel, Pascal Belaubre, Benoit Belier, Jean-Bernard Pourciel
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Patent number: 8173033Abstract: In a nano filter structure for breathing and a manufacturing method of the nano filter structure, a semiconductor process technology is used for manufacturing a nano filter structure comprising a top gate, a bottom gate, a plurality of sidewall gates and a plurality of supports. The sidewall gates include a plurality of filterable gratings, and the filterable gratings are controlled precisely to a nanoscale by a semiconductor process technology. Therefore, the nano filterable gratings can be manufactured easily and quickly, and the multilayer design of the filterable gratings enhances the aperture ratio of a filter material, such that users can inhale or exhale easily through the filter material.Type: GrantFiled: December 9, 2011Date of Patent: May 8, 2012Inventor: Shu-Yuan Chuang
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Publication number: 20120085734Abstract: An expandable stent includes a tubular structure with an outer surface positionable adjacent to a vessel wall and an inner surface facing a lumen of a body passageway. The tubular structure further includes a plurality of expansion struts, connector struts and cells. The tubular structure has a first diameter which permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter which is achieved upon the application of a radially, outwardly extending force. A plurality of cavities are formed in the outer surface of the stent.Type: ApplicationFiled: December 14, 2011Publication date: April 12, 2012Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: G. David Jang
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Publication number: 20120080361Abstract: Methods and devices for isolating and sorting nanoparticles are disclosed herein. Nanopores of a desired size can be formed in silicon dioxide membranes and used as filters to separate nanoparticles. Devices are also provided herein for sorting nanoparticles with multiple filters having various sized nanopores.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Inventors: Sameer Walavalkar, Aditya Rajagopal, Axel Scherer, Thomas A. Tombrello
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Patent number: 8142700Abstract: Dry adhesives and methods for forming dry adhesives. A method of forming a dry adhesive structure on a substrate, comprises: forming a template backing layer of energy sensitive material on the substrate; forming a template layer of energy sensitive material on the template backing layer; exposing the template layer to a predetermined pattern of energy; removing a portion of the template layer related to the predetermined pattern of energy, and leaving a template structure formed from energy sensitive material and connected to the substrate via the template backing layer.Type: GrantFiled: December 14, 2007Date of Patent: March 27, 2012Assignee: Carnegie Mellon UniversityInventors: Metin Sitti, Michael Murphy, Burak Aksak
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Publication number: 20120070752Abstract: A membrane humidifier assembly for a membrane humidifier for a fuel cell system and a method for making the same is disclosed, the method comprising the steps of providing a material for forming a diffusion medium; forming a plurality of channels in the material with one of a channel-forming roller, a means for etching the material, and a press for forming the diffusion medium; and providing a pair of membranes, wherein the diffusion medium is disposed between the pair of membranes.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jeffrey M. Guzda, David A. Martinchek
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Patent number: 8137569Abstract: A method of fabricating a membrane having a tapered pore, a polymeric membrane having a tapered pore, and uses of such polymeric membrane are disclosed. The membrane includes apertures of increasing diameter which are aligned with each other to form the tapered pore.Type: GrantFiled: March 23, 2009Date of Patent: March 20, 2012Assignees: Sony Deutschland GmbH, Oxford Nanopore Technologies LimitedInventors: Oliver Harnack, Jurina Wessels, Akio Yasuda, James Clarke, Terry Reid
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Publication number: 20120061349Abstract: A method for correcting the critical dimension (CD) of a phase shift mask includes calculating an intensity slope quantifying a slope of an intensity waveform of secondary electrons emitted by scanning an electron beam spot to a hard mask pattern on a phase shift mask on a substrate, extracting a delta critical dimension (CD) value, which is equal to a CD difference between the phase shift pattern and the hard mask pattern, as a delta CD value corresponding to the intensity slope, and correcting the CD of the phase shift mask by using the extracted delta CD value.Type: ApplicationFiled: September 9, 2011Publication date: March 15, 2012Applicant: HYNIX SEMICONDUCTOR INC.Inventor: Choong Han RYU
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Publication number: 20120058328Abstract: The present invention relates to a process for fabricating a porous coatings with controlled structure in the micro and nano-size domain. In particular, but not exclusively, it relates to a process for fabricating coatings with an anisotropic pore size distribution and to coatings obtained using such coatings. It describes in particular the use of ink-jet method to deposit in a controlled way such coatings. It also relates to porous coatings with controlled structure in the micro and nano-size domain. The coating has a thickness between 10 nanometres and 10 millimetres and its porosity is created in such a way that the pore size distribution is anisotropic. It finally describes objects covered with this coating.Type: ApplicationFiled: May 26, 2009Publication date: March 8, 2012Inventors: Arnaud Tourvieille, Heinrich Hofmann, Laurent-Dominque Piveteau
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Patent number: 8123960Abstract: Methods for fabricating sublithographic, nanoscale microchannels utilizing an aqueous emulsion of an amphiphilic agent and a water-soluble, hydrogel-forming polymer, and films and devices formed from these methods are provided.Type: GrantFiled: March 22, 2007Date of Patent: February 28, 2012Assignee: Micron Technology, Inc.Inventor: Dan B. Millward
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Patent number: 8123963Abstract: A method for producing a semiconductor component includes forming an n-doped layer in a p-doped layer of the semiconductor component, wherein the n-doped layer comprises at least one of: a sieve-like layer or a network-like layer. The method also includes porously etching the p-doped layer between the material of the n-doped layer to form a top electrode, and forming a cavity below the n-doped layer.Type: GrantFiled: May 12, 2008Date of Patent: February 28, 2012Assignee: Robert Bosch GmbHInventors: Hubert Benzel, Heribert Weber, Hans Artmann, Frank Schaefer
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Publication number: 20120043299Abstract: A method for manufacturing a composite of metal and resin including following steps: providing a metal piece; cleaning the metal piece in a degreasing agent solution; etching the surface of the metal piece by focused ion beam to form a pattern of nanopores; inserting the metal piece into a mold and heating the metal piece to reach a temperature in a range of 100° C. to 350° C.; and injecting molten resin material on the metal piece. The resin material is combined with the metal piece when the resin material is cool.Type: ApplicationFiled: December 26, 2010Publication date: February 23, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: HSIN-PEI CHANG, WEN-RONG CHEN, HUANN-WU CHIANG, CHENG-SHI CHEN, HUA-YANG XU
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Publication number: 20120018613Abstract: A mold of the present invention includes: a base 12 made of glass or plastic; an inorganic underlayer 14 provided on a surface of the base 12; a buffer layer 16 provided on the inorganic underlayer 14, the buffer layer 16 containing aluminum; an aluminum layer 18a provided on a surface of the buffer layer 16; and a porous alumina layer 20 provided on a surface of the aluminum layer 18a. The porous alumina layer 20 has a plurality of recessed portions 22 whose two-dimensional size viewed in a direction normal to the surface is not less than 10 nm and less than 500 nm. The mold of the present invention has excellent adhesion between the aluminum layer and the base.Type: ApplicationFiled: April 6, 2010Publication date: January 26, 2012Inventors: Hidekazu Hayashi, Kiyoshi Minoura, Akinobu Surugi
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Patent number: 8097173Abstract: The invention provides porous particles that produce a predetermined optical response and that may be manipulated magnetically. A preferred particle of the invention has a porous structure that produces a predetermined optical response and magnetic material adhered to the particle. Another preferred particle is amphiphilic. The optical response provided by a particle of the invention enables particles of the invention to be used in sensing, labeling, signaling, display and many other applications. The magnetic nature of the present magnetic particles permits the particles themselves to be manipulated, e.g., vibrated, moved and re-oriented. The porous particles can also be used to control, move, and/or deliver small volumes of liquids and solids associated with the particles.Type: GrantFiled: July 18, 2005Date of Patent: January 17, 2012Assignee: The Regents of the University of CaliforniaInventors: Michael J. Sailor, Yang Yang Li, Nathan Trujillo, Jason Dorvee
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Publication number: 20120007273Abstract: A method of molding a polymeric material to create a desired texture therein using an alumina mold having a plurality of cylindrical pores disposed therein, the method comprising the steps of: a) providing a porous alumina master having a plurality of cylindrical pores dispersed therein, said plurality of cylindrical pores corresponding to projections to be imparted to a surface of a film; disposing a polymeric material between a film and the porous alumina master; and c) applying mechanical pressure to roll the porous alumina master into the polymeric material, wherein the texture imparted to the polymeric molding material comprises projections corresponding to the cylindrical pores of the porous alumina master. A release agent is applied to the porous alumina master prior to disposing the polymeric molding material between the porous alumina master and the film.Type: ApplicationFiled: July 12, 2010Publication date: January 12, 2012Inventors: Graham J. Hubbard, Keith P. Parsons
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Publication number: 20110315660Abstract: Disclosed are a method for recycling silica waste and a method for preparing nanoporous material and other valuable silica materials. More specifically, a method for preparing a nanoporous material by recycling silica-containing waste produced from a silica etching process in the synthesis of nanoporous carbon is provided. The present disclosure allows recycling of silica waste in an effective and environment-friendly manner, reduction of consumption of chemical materials, and reduction of chemical waste. Accordingly, the present disclosure enables effective preparation of various valuable nanoporous silica and other silica materials from silica waste released for production of various nanoporous materials.Type: ApplicationFiled: April 29, 2011Publication date: December 29, 2011Inventor: Jong-Sung Yu
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Patent number: 8052884Abstract: A method of fabricating a microchannel plate includes defining a plurality of pores extending from a top surface of a substrate to a bottom surface of the substrate where the plurality of pores has a resistive material on an outer surface that forms a first emissive layer. A second emissive layer is formed over the first emissive layer. The second emissive layer is chosen to achieve at least one of an increase in secondary electron emission efficiency and a decrease in gain degradation as a function of time. A top electrode is formed on the top surface of the substrate and a bottom electrode is formed on the bottom surface of the substrate.Type: GrantFiled: February 27, 2008Date of Patent: November 8, 2011Assignee: Arradiance, Inc.Inventors: Neal T. Sullivan, David Beaulieu, Anton Tremsin, Philippe De Rouffignac, Michael D. Potter
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Patent number: 8047156Abstract: The present disclosure is drawn to dice with polymer ribs. In one example, a die structure can comprise a die having a plurality of die slots, the die having polymer ribs attached to one side thereof, wherein the polymer ribs are attached using a polymer film on one side of the die, said polymer film having portions removed along the die slots to form the polymer ribs which bridge the die slots, thereby forming a plurality of polymer bridged die slots.Type: GrantFiled: July 2, 2007Date of Patent: November 1, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Manish Giri, Arun K. Agarwal, Bradley D. Chung, Jeremy Harlan Donaldson
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Publication number: 20110259083Abstract: A novel method of manufacturing a hydrogen sensor is disclosed. The method includes the steps of forming a thin film made of a transition metal or an alloy thereof on a surface of an elastic substrate, and forming a plurality of nanogaps in the thin film formed on the surface of the elastic substrate by applying a tensile force to the elastic substrate. The nanogaps are formed as the thin film is stretched in a direction in which the tensile force acts while being contracted in a direction perpendicular to the direction in which the tensile force acts when the tensile force is applied, and is contracted again in the direction in which the tensile force is released while being stretched again in the direction perpendicular to the direction in which the tensile force is released when the tensile force is released.Type: ApplicationFiled: December 3, 2010Publication date: October 27, 2011Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Woo Young Lee, Jun Min Lee, Eun Yeong Lee
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Patent number: 8043519Abstract: In a through hole closing process, a metal plate is attached to one surface of a conductive base member having a plurality of through holes by the use of a magnet, in a copper plating process, a copper plating layer is formed on the conductive base member and the metal plate exposed within the through holes, from the side of the conductive base member where the metal plate is not attached, thereby to fill up the through holes, in a film forming process, a Pd alloy film is formed by plating on the surface of the conductive base member after removal of the metal plate, and in a removal process, the copper plating layer is removed by selective etching, thereby to produce a hydrogen production filter that is used in a reformer a fuel cell so as to be capable of stably producing high purity hydrogen gas.Type: GrantFiled: May 21, 2008Date of Patent: October 25, 2011Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Hiroshi Yagi, Takanori Maeda, Yoshinori Oota, Yasuhiro Uchida
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Patent number: 8043520Abstract: A pattern forming material contains a block copolymer or graft copolymer and forms a structure having micro polymer phases, in which, with respect to at least two polymer chains among polymer chains constituting the block copolymer or graft copolymer, the ratio between N/(Nc?No) values of monomer units constituting respective polymer chains is 1.4 or more, where N represents total number of atoms in the monomer unit, Nc represents the number of carbon atoms in the monomer unit, No represents the number of oxygen atoms in the monomer unit.Type: GrantFiled: January 16, 2009Date of Patent: October 25, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Koji Asakawa, Toshiro Hiraoka, Yoshihiro Akasaka, Yasuyuki Hotta
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Patent number: 8038895Abstract: A method for detection of mechanical defects in a semiconductor ingot section which has at least one planar surface, and a thickness at right angles to this surface of 1 cm to 100 cm, involves scanning the planar surface by at least one ultrasound head which is coupled via a liquid coupling medium to the planar surface and, at each measurement point (x,y) producing at least one ultrasound pulse which is directed at the planar surface of the ingot section, recording the ultrasound-pulse echo as a function of time, such that an echo from the planar surface, an echo from a surface opposite the planar surface, and further echoes are detected, with the positions (xp, yp, zp) of mechanical defects in the ingot section being determined from the further echoes.Type: GrantFiled: June 19, 2007Date of Patent: October 18, 2011Assignee: Siltronic AGInventors: Ludwig Koester, Peter Czurratis, Klaus Kraemer
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Publication number: 20110233169Abstract: A method of forming an implant to be implanted into living bone is disclosed. The method comprises the act of roughening at least a portion of the implant surface to produce a microscale roughened surface. The method further comprises the act of immersing the microscale roughened surface into a solution containing hydrogen peroxide and a basic solution to produce a nanoscale roughened surface consisting of nanopitting superimposed on the microscale roughened surface. The nanoscale roughened surface has a property that promotes osseointegration.Type: ApplicationFiled: March 29, 2011Publication date: September 29, 2011Applicant: Biomet 3i, LLCInventors: Robert L. Mayfield, Ross W. Towse
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Publication number: 20110226990Abstract: Silica core-shell microparticles are prepared by growing a porous silica shell from a silica precursor onto the surface of non-porous silica particle dispersed in a mixed surfactant solution under basic pH conditions. The particles are hydrothermally treating in an oil-in-water emulsion system and the particles are calcined to remove residual surfactants. Optionally, the particles of may be base etched to expand the size of the pores in the silica shell. Core-shell silica particles with an ordered mesoporous layer are produced.Type: ApplicationFiled: November 26, 2009Publication date: September 22, 2011Inventors: Jeremy D. Glennon, Jesse Omamagho
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Patent number: 8012363Abstract: A method of fabricating a printhead having a hydrophobic ink ejection face, the method comprising the steps of: (a) providing a partially-fabricated printhead comprising a plurality of nozzle chambers and a nozzle plate having relatively hydrophilic nozzle surface, the nozzle surface at least partially defining the ink ejection face of the printhead; (b) depositing a hydrophobic polymeric layer onto the nozzle surface; (c) depositing a protective metal film onto at least the polymeric layer; (d) depositing a sacrificial material onto the polymeric layer; (e) patterning the sacrificial material to define a plurality of nozzle opening regions; (f) defining a plurality of nozzle openings through the metal film, the polymeric layer and the nozzle plate; (g) subjecting the printhead to an oxidizing plasma; and (h) removing the protective metal film, thereby providing a printhead having a relatively hydrophobic ink ejection face.Type: GrantFiled: November 29, 2007Date of Patent: September 6, 2011Assignee: Silverbrook Research Pty LtdInventors: Gregory John McAvoy, Emma Rose Kerr, Kia Silverbrook
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Patent number: 7993534Abstract: A method for forming a chemical microreactor includes forming at least one capillary microchannel in a substrate having at least one inlet and at least one outlet, integrating at least one heater into the chemical microreactor, interfacing the capillary microchannel with a liquid chemical reservoir at the inlet of the capillary microchannel, and interfacing the capillary microchannel with a porous membrane near the outlet of the capillary microchannel, the porous membrane being positioned beyond the outlet of the capillary microchannel, wherein the porous membrane has at least one catalyst material imbedded therein.Type: GrantFiled: March 27, 2009Date of Patent: August 9, 2011Assignee: Lawrence Livermore National Security, LLCInventors: Jeffrey D. Morse, Alan Jankowski
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Patent number: 7985686Abstract: A floating gate for a field effect transistor (and method for forming the same and method of forming a uniform nanoparticle array), includes a plurality of discrete nanoparticles in which at least one of a size, spacing, and density of the nanoparticles is one of templated and defined by a self-assembled material.Type: GrantFiled: March 13, 2006Date of Patent: July 26, 2011Assignee: International Business Machines CorporationInventors: Charles T. Black, Kathryn Wilder Guarini
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Publication number: 20110174728Abstract: The invention provides modified polysulfones substituted in one or more of the phenyl rings by functional groups and membranes composed of the modified polysulfones. Also provided are methods for the preparation of monodispersed nanoporous polymeric membranes. The membranes are useful for reverse osmosis, nanofiltration, and ultrafiltration, particularly for purification of water.Type: ApplicationFiled: August 20, 2008Publication date: July 21, 2011Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Moris S. Eisen, Raphael Semiat, Natalia Vainrot
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Publication number: 20110165382Abstract: This invention presents a method for the fabrication of periodic nanostructures on polymeric surfaces by means of plasma processing, which method comprises the following steps: (i) provision of a homogeneous organic polymer (such as PMMA, or PET, or PEEK, or PS, or PE, or COC) or inorganic polymer (such as PDMS or ORMOCER); (ii) exposure of the polymer to an etching plasma such as oxygen (O2) or sulphur hexafluoride (SF6) or a mixture of oxygen (O2) and sulphur hexafluoride (SF6), or mixtures of etching gases with inert gases such as any Noble gas (Ar, He, Ne, Xe).Type: ApplicationFiled: June 15, 2009Publication date: July 7, 2011Applicant: NATIONAL CENTER FOR SCIENTIFIC RESEARCH "DEMOKRITOS"Inventors: Evangelos Gogolides, Aagelike Tserepi, Vassilios Constantoudis, Nikolaos Vourdas, Georgios Boulousis, Maria-Elenma Vlachopoulou LACHOPOULOU, Aikaterini Tsougeni, Dimitrios Kontziampasis
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Publication number: 20110139707Abstract: A method for fabricating isolated pores in an inorganic membrane includes the steps of patterning the inorganic membrane to selectively expose a portion of the membrane, forming a plurality of tracks of material damage in the exposed portion of the inorganic membrane by irradiation with energetic ions, and chemically etching the track damaged material to define the pores through the inorganic membrane with a predetermined geometrically defined cross sectional shape and with a controlled diameter range from less than 1 nanometer and up to micrometer scale.Type: ApplicationFiled: June 11, 2010Publication date: June 16, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Zuzanna S. Siwy, Ivan V. Vlassiouk, Pavel Yu Apel, Sergey N. Dmitriev
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Patent number: 7960708Abstract: Various embodiments disclose devices and methods for fabricating microporous particulate filters with regularly space pores wherein sheet membrane substrates are exposed to energetic particle radiation through a mask and the damaged regions removed in a suitable developer. The required depth of field is achieved by using energetic particles to minimize diffraction and an energetic particle source with suitably small diameter.Type: GrantFiled: September 17, 2007Date of Patent: June 14, 2011Assignee: University of HoustonInventors: John C. Wolfe, Paul Ruchhoeft
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Patent number: 7955512Abstract: Disclosed are medical devices having textured surfaces and related methods for texturing. Methods of surface texturing using gas-phase plasma provide medical devices with myriad complex surface morphologies.Type: GrantFiled: February 13, 2007Date of Patent: June 7, 2011Assignee: Medtronic, Inc.Inventors: Eunsung Park, Catherine E. Taylor, Kevin Casey
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Publication number: 20110122406Abstract: A method is provided to prepare one or more microfluidic channels on a receptive material by applying an image-forming material to a heat sensitive thermoplastic receptive material in a designed pattern and heating the material under conditions that reduce the size of the thermoplastic receptive material by at least about 60%. In an alternative aspect, the microfluidic channels on receptive material are prepared by etching a designed pattern into a heat sensitive thermoplastic material support and then heating the material under conditions that reduce the size of the thermoplastic receptive material by at least about 60%.Type: ApplicationFiled: November 12, 2008Publication date: May 26, 2011Inventors: Michelle Khine, Chi-shuo Chen, Anthoy Grimes, David Nate Breslauer, Luke Lee, Michael Dunlap, Ajay Gopinathan, Sayantani Ghosh
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Publication number: 20110120970Abstract: Disclosed herein is a method of producing an antireflection thin film using a block copolymer and an antireflection thin film prepared by the method. Specifically, the present invention relates to a method of producing a nanoporous antireflection film by spin-coating using a block copolymer solution and subsequent processing and a preparation by the method. The antireflection film of the present invention is prepared by coating a substrate with a block copolymer and selectively removing at least one block in the coated block copolymer to produce a nanoporous thin film with a pore size of 5 to 100 nm. When the thin film is applied to a substrate, an antireflection substrate which has a very low reflectance within a broad range of wavelength can be prepared.Type: ApplicationFiled: November 30, 2007Publication date: May 26, 2011Applicant: Postech Academy-Industry FoundationInventors: Won Chul Joo, Jin Kon Kim, Min Soo Park