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593 results about "Multilayer membrane" patented technology
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Semiconductor crystal film and method for preparation thereof
InactiveUS6852602B2Promote stratificationEasy to getTransistorSemiconductor/solid-state device manufacturingMultilayer membraneThin membrane
A multi-layer film 10 is formed by stacking a Si1-x1-y1Gex1Cy1 layer (0≦x1<1 and 0<y1<1) having a small Ge mole fraction, e.g., a Si0.785Ge0.2C0.015 layer 13, and a Si1-x2-y2Gex2Cy2 layer (0<x2≦1 and 0≦y2<1) (where x1<x2 and y1>y2) having a high Ge mole fraction, e.g., a Si0.2Ge0.8 layer 12. In this manner, the range in which the multi-layer film serves as a SiGeC layer with C atoms incorporated into lattice sites extends to high degrees in which a Ge mole fraction is high.
Owner:PANASONIC CORP
Process for detecting leaks in sealed packages
InactiveUS20060121613A1Chemiluminescene/bioluminescenceSynthetic resin layered productsLength waveChemistry
The present invention relates to a process for detecting a leak in a package. The process comprises preparing a package by covering at least a portion of an O2-sensitive product with a multilayer film comprising (i) a leak-indicator layer in which a O2-sensitive indicator is present throughout the leak-indicator layer; and (ii) an O2-barrier layer outward of the leak-indicator layer. A low O2-environment is provided within the package. The leak-indicator layer is then illuminated with light containing a wavelength absorbed by the O2-sensitive indicator, so that the O2-sensitive indicator produces an emission of radiation in an amount inversely proportional to a level of O2 present with the O2-sensitive indicator. Then the multilayer film is scanned while the O2-sensitive indicator is emitting radiation, the scanning being carried out by sensing and comparing the amount of radiation emitted from at least two different regions of the multilayer film.
Owner:CRYOVAC ILLC
Machine direction oriented polymeric films and methods of making the same
InactiveUS7217463B2Increase stiffnessImprove clarityStampsFilm/foil adhesivesElastomerMultilayer membrane
This invention relates to a film comprising a machine direction oriented polymeric film prepared from (A) at least one propylene homopolymer or copolymer or lend of two or more thereof, wherein (A) has a melt flow rate from about 6 to about 30 and (B) an olefin elastomer having a melt flow rate of 0.5 to 10. In one embodiment, the film also contains a nucleating agent. In one embodiment, these films are clear. The films have good stiffness and clarity with low haze. These films are useful in preparing labels and may be used as a monolayer film or in a multilayer film. In one embodiment, the films are printable. Die-cut labels are also described which comprise a composite comprising the extruded, machine-direction oriented polypropylene copolymer films of the present invention in combination with an adhesive associated with said copolymer films for adhering said label to a substrate. Multilayer composites also are described which comprise a label facestock material comprising an extruded oriented multilayer film of the present invention, an adhesive layer associated with said facestock material, and a release-coated liner or carrier. Combinations of the labels of the present invention joined with layer of adhesive to a substrate such as glass bottles also are described.
Owner:AVERY DENNISON CORP
Sound-transmitting membrane for microphone, sound-transmitting membrane member for microphone provided with the membrane, microphone, and electronic device provided with microphone
ActiveUS20110255728A1Suppress water condensationEnsure microphone performancePiezoelectric/electrostrictive microphonesElectrostatic transducer microphonesForeign matterAcoustic transmission
The present invention provides a sound-transmitting membrane for a microphone, to be disposed to a sound-collecting opening of the microphone so as to allow sound to transmit through the membrane while preventing a foreign matter from entering into the microphone through the opening. This membrane for a microphone prevents the entry of a foreign matter, such as fine dust and water vapor, that is difficult for conventional sound-transmitting membranes to block, and ensures the microphone performance. This membrane for a microphone is composed of a nonporous film or a multilayer membrane including a nonporous film, has a surface density of 30 g/m2 or less, and has a sound transmission loss of less than 3 dB in a frequency range of 300 to 4000 Hz.
Owner:NITTO DENKO CORP
Compliant, nanoscale free-standing multilayer films
InactiveUS20050175507A1Improve featuresImprove responseMaterial nanotechnologySemi-permeable membranesMultilayer membraneAnionic polymers
A compliant free-standing multilayer membrane is provided of the cross-sectional formula:[(Pcat−Pan)nPcat / Met / (Pcat−Pan)nPcat]mwherein (Pcat31 Pan) represents a bilayer of an anionic polymer and a cationic polymer between at least one layer of Met; n is about 1-50, m is about 1-10; Met is an inert metal nanoparticle; Pcat is a cationic polymer and Pan is an anionic polymer, preferably prepared by a spin-assisted layer-by-layer assembly on a sacrificial substrate layer.
Owner:IOWA STATE UNIV RES FOUND
Carbon-sulfur composites encapsulated with polyelectrolyte multilayer membranes
InactiveUS20140234707A1Active material electrodesNon-aqueous electrolyte accumulator electrodesPolyelectrolyteMultilayer membrane
A carbon-sulfur composite coated with a membrane containing alternating layers of oppositely charged polyelectrolytes is provided. A cathode containing the coated carbon-sulfur composite and a battery constructed with the cathode are also provided.
Owner:TOYOTA JIDOSHA KK
Heat-shrinkable multilayer film
A polyamide resin-based heat-shrinkable multilayer film is caused to satisfy various properties required of a packaging material, especially a food packaging material, at high levels, and particularly exhibit a highest level of heat-shrinkability. The multilayer film comprises at least three layers including an outer surface layer (a) which comprises a polyester resin or a polyolefin resin; an intermediate layer (b) which comprises a mixture of 85-60 wt. % of an aliphatic polyamide resin, and 15-40 wt. % of an aromatic copolyamide resin which is a copolymer of aliphatic diamine / isophthalic acid and aliphatic diamine / terephthalic acid, and an inner surface layer (c) which essentially comprises a copolymer of ethylene and alpha-olefin having a density below 0.915. The heat-shrinkable multilayer film has been biaxially stretched and then heat-treated to have hot-water shrinkabilities at 80° C. of at least 30% in each of longitudinal / transverse directions and at least 35% in at least one of longitudinal / transverse directions.
Owner:KUREHA KAGAKU KOGYO KK
Multilayer mirror, method for manufacturing the same, and exposure equipment
InactiveCN1868033ALittle complianceImprove reflectivityMirrorsHandling using diffraction/refraction/reflectionOptoelectronicsThermal expansion
A multilayer film reflection mirror intended to reduce the dependency of reflectance on an incident angle. A substrate (1) is made of a low-thermal-expansion glass polished until its surface (top surface in the FIG.) has a roughness of up to 0.2 nmRMS. An Ru/Si multilayer film (3) having the large half width of peak reflectance is formed on the surface of the substrate (1), and an Mo/Si multilayer film (5) having a high peak reflectance is formed on this Ru/Si multilayer film (3). Accordingly, a reflectance peak having a higher reflectance than the case with of Ru/Si only and a larger half width than the case with of Mo/Si multilayer film (5) only is obtained. Since Ru provides a larger EUV beam absorption than Mo, a higher reflectance than with the case of a structure in which the Ru/Si multilayer film (3) is formed on the Mo/Si multilayer film (5) is obtained. Since a multilayer film having a larger half width at a spectral reflectance has a smaller dependency of reflectance on an angle, the invention can keep a high imaging performance in a projection optical system.
Owner:NIKON CORP
High-obstruct multiple-layer film for packaging liquid and manufacturing method thereof
InactiveCN101081653AReduce consumptionReduce thicknessFlexible coversWrappersPolyesterPolymer science
The present invention discloses one kind of multilayer high blocking film for packing liquid material, the multilayer high blocking film includes polyethylene-based heat sealing layer(s), blocking polymer layer(s) preferably of ethylene-vinyl alcohol copolymer, PVA or polyvinylidene dichloride; and protecting layer(s) of polypropylene, polyester, etc. It has the total thickness below 80 micron, preferably of 55-65 micron. The present invention discloses also the making process of the multilayer high blocking film.
Owner:刘建林
Fluorochloro Ionomers
This invention discloses novel fluorochloro ionomers and processes of making them. The first preferred body of invention is perfluorochloro ionomers having (1) equivalent weight between 600 and 1500, preferably between 800 and 1200, and most preferably between 900 and 1100; (2) chlorine content between 8% and 30% by weight. These ionomers are breathable and excellent barrier materials, capable of being processed into thin films or membranes and are well suited for low humidity or high temperature fuel cell applications and for chemical protective covering materials. The second preferred body of invention is partially fluorochloro ionomers having (1) moisture vapor permeability rate >3000 gram H2O / m2 / day (about ½ mil thick film); (2) chlorine content of between 10% and 39% by weight. These ionomers are breathable and excellent barrier materials that can also be processed into thin films or membranes and are suited for some fuel cell applications and more preferably for breathable protective covering applications. The membranes can be monolithic films or multi-layers films, or composite films, or bipolar membranes. These novel fluorochloro ionomers are made by radical copolymerization of at least one fluorochloro monomer and at least one comonomer consisting of at least ionic group or at least one precursor that can be converted to ionic groups such as acid groups or amines or quaternary amine groups. The said fluorochloro monomer containing at least one fluorine and at least one chlorine atom is free radical polymerizable including chlorotrifluoroethylene (CFCl═CF2) and dichlorodifluoroethylene (CFCl═CFCl).
Owner:ZHEJIANG HYPROOF TECH CO LTD
Sound-transmitting membrane for microphone, sound-transmitting membrane member for microphone provided with the membrane, microphone, and electronic device provided with microphone
ActiveUS9253297B2Condensation suppressionEnsure performancePiezoelectric/electrostrictive microphonesElectrostatic transducer microphonesAcoustic transmissionForeign matter
The present invention provides a sound-transmitting membrane for a microphone, to be disposed to a sound-collecting opening of the microphone so as to allow sound to transmit through the membrane while preventing a foreign matter from entering into the microphone through the opening. This membrane for a microphone prevents the entry of a foreign matter, such as fine dust and water vapor, that is difficult for conventional sound-transmitting membranes to block, and ensures the microphone performance. This membrane for a microphone is composed of a nonporous film or a multilayer membrane including a nonporous film, has a surface density of 30 g / m2 or less, and has a sound transmission loss of less than 3 dB in a frequency range of 300 to 4000 Hz.
Owner:NITTO DENKO CORP
Tear resistant bag for consumables
The invention is a tear-resistant container or bag made with a multilayer film comprising a composite structure of relatively inexpensive polymers and paper. The multilayer composite structure generally consists of an oriented polymer film layer adhered to a reinforcing scrim layer via a thermal bonding layer, to form a backing structure, and at least one paper layer adhered to the backing structure.
Owner:DUPONT TEIJIN FILMS US LTD
Multilayer films
InactiveUS20100062232A1Cosmetic preparationsMaterial analysis by observing effect on chemical indicatorCrosslinked chitosanMultilayer membrane
The present invention concerns multilayer films comprising a plurality of layers, at least some of the layers comprise (i) cross-linked chitosan, alginate, chondroitin sulfate, or hyaluronic acid and (ii) particles or void spaces; wherein the layers are 20-260 nm in thickness. Also disclosed are multilayer films comprising at least two of: a layer comprising a first polymer; a layer comprising a second polymer; a layer comprising particles, wherein said particles comprise ceramic material, metallic species, or both; and, a layer comprising a combination of said first polymer and said particles; wherein said multilayer film is capable of displaying structural color. Also provided are methods for making and using the inventive multilayer films and compositions comprising the multilayer films.
Owner:DREXEL UNIV
Thermoplastic film with good interply adhesion
A multilayer film including an outer layer that includes a homo- or interpolymer of propylene and, directly adhered to the outer layer, a layer that includes a homogeneous ethylene / alpha-olefin interpolymer having a density of no more than about 0.91 g / cm3 exhibits good seal strength and good adhesion between the two layers, even in areas where the film is sealed, even after the film is oriented, even when the film is subjected to the elevated temperatures involved in cook-in procedures, and even where the film is subjected to, e.g., grease from fatty foods. The film also can include one or more, for example, bulk layers, O2-barrier layers, and / or abuse layers.Owner:CRYOVAC ILLC
Multi-layer films having improved sealing properties
InactiveUS7537829B2Improving seal strength and impact strength and resilience and hermeticityReduced-temperature sealabilitySynthetic resin layered productsLaminationEngineeringPolymer
Multi-layer films that are suitable for packaging and having improved sealing properties are disclosed. Some embodiments may also provide a lower minimum sealing temperature. A soft polymer is blended in a core layer and a tie layer comprising the soft polymer and, optionally, another polymer. A sealable layer is provided on the side of the tie layer opposite the core layer. The multi-layer films may be transparent, contain a cavitating agent, or are pigmented to form an opaque film. Also, the multi-layer film may be metallized or coated with a barrier coating.
Owner:JINDAL FILMS AMERICAS LLC
Process for fabricating monolayer/multilayer ultrathin films
InactiveUS6881444B2Improve film qualityShort processing timeLight-sensitive devicesSemiconductor/solid-state device manufacturingHydrogenMetallurgy
The present invention provides a process for fabricating ultrathin monolayers or ultrathin multilayer films, the process comprising the steps of: introducing positive or negative charge or a material capable of hydrogen-bonding to a substrate and placing the substrate on a spinner(pretreating step); introducing a material (A) bindable with the material deposited on the substrate, and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 seconds(first coating step); dropping washing solvent onto the substrate after completion of the first coating and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 sec to remove weakly-bound material (A) and form a thin film (A)(first washing step); introducing another material (B) bindable with the material (A) coated on the substrate and further coating it in the same condition as of the first coating(second coating step), dropping washing solvent onto the substrate after completion of the second coating and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 sec to remove the weakly-bound material (B) and form a thin film(B)(second washing step), wherein the entire above steps are more than once repeated.
Owner:HONG JONG DAL +2
Microporous Multilayer Membrane, System And Process For Producing Such Membrane, And The Use Of Such Membrane
InactiveUS20100248002A1Raise the ratioIncrease temperatureSemi-permeable membranesSecondary cellsPolypropyleneMembrane configuration
The invention relates to a multilayer microporous membrane comprising polyethylene and polypropylene and having an improved balance of properties including improved thickness variation in at least one planar direction. The invention also relates to a system and method for producing such a membrane, the use of such a membrane as a battery separator film, and batteries containing such a membrane.
Owner:TORAY BATTERY SEPARATOR FILM
Multilayer coextrusion paper-like liquid packaging film
PendingCN101905776AGood dispersionGood compatibilityPackage recyclingFlexible coversMultilayer membraneFood packaging
The invention provides a multilayer coextrusion paper-like liquid packaging film. In resent years, people demand more dairy products, and the demand for the packaging films of various kinds of dairy products and liquid foods increases along with the continuous development of a UHT (Ultra Heat Treated) sterilization technology. According to incomplete statistics, only the consumption of milk packaging films reaches 7200 tons / year in 2009, and because liquid foods have self characteristics, liquid packaging films which are all made from 100% plastics are impossible to adopt a biodegradable packaging material to package the liquid foods so that gigantic pressure is brought to environmental protection, and a great amount of oil resources is consumed. Therefore, the field needs a material which can be used for packaging liquid, particularly a multi-layer liquid packaging film for packaging liquid dairy products and being capable of reducing the consumption of oil resources. According to one aspect of the invention, the invention provides the multilayer film is used for packaging liquid and can greatly reduce the consumption of plastic raw materials.Owner:刘燕
Sound-permeable membrane, sound-permeable membrane member including same, microphone, and electronic device
ActiveUS20170245036A1Maintain good propertiesLoudspeaker screensMouthpiece/microphone attachmentsMultilayer membraneForeign matter
The sound-permeable membrane of the present invention is adapted, when placed over an opening for directing sound to or from a sound transducer, to prevent entry of foreign matters into the sound transducer through the opening while permitting passage of sound, the sound-permeable membrane including a non-porous film or a multilayer membrane including the non-porous film. The non-porous film is formed of oriented polytetrafluoroethylene. This sound-permeable membrane has an unconventional configuration and exhibits various excellent properties. At least one principal surface of the non-porous film may have a region subjected to a surface modification treatment.
Owner:NITTO DENKO CORP
Multi-layered film
InactiveUS20070082185A1Increase capacityHigh strengthLayered product treatmentSynthetic resin layered productsMultilayer membranePolymer science
To provide a multi-layered film as transparent as that produced by T-die or water-cooled inflation molding, even when produced by air-cooled inflation molding, and excellent in tearing strength, impact strength, heat-sealing capacity at low temperature and interlayer strength. The multi-layered film comprises a propylene-based resin layer composed of a propylene / α-olefin random copolymer as the major component, which has a melt flow rate (MFR, determined at 230° C.) of 1 to 30 g / 10 minutes, melting peak temperature (Tm) of 110 to 165° C. and Mw / Mn ratio of 1.5 to 3.5, and is produced in the presence of a metallocene catalyst, wherein the propylene-based resin layer is laminated, on each side, with a copolymer of ethylene and α-olefin of 3 to 12 carbon atoms, having an MFR (determined at 190° C.) of 0.1 to 20 g / 10 minutes and density: 0.860 to 0.925 g / cm3.
Owner:JAPAN POLYPROPYLENE CORP
Chlorine-Free Packaging Sheet with Tear-Resistance Properties
InactiveUS20110104342A1Lower the resistance valueEnvelopes/bags making machineryDomestic containersMultilayer membraneTear resistance
A chlorine-free packaging sheet having a first rigid component, a second rigid component and a multilayer film positioned between the first rigid component and the second rigid component, a package comprising such packaging sheet and a method of manufacturing such sheet. The packaging sheet has a normalized combined tear initiation and propagation resistance in both the machine direction and the transverse direction of less than about 0.115 in*lbf/mil energy to break and less than about 0.800%/mil elongation, and a normalized tear propagation resistance in both the machine direction and the transverse direction of less than about 0.300 in*lbf/mil energy to break and less than about 0.145 lbf/mil peak load.
Owner:BEMIS COMPANY INC
Multi-layer films having uniform content
InactiveUS20110200715A1Organic active ingredientsCosmetic preparationsPolyethylene oxideActive component
The present invention relates to edible multi-layer films that dissolve in water. In particular, the edible multi-layer films have a first water-soluble film layer and one or more additional water-soluble film layers in at least partial face-to-face engagement with the first film layer. The film layers include a polymer composition which contains polyethylene oxide alone or in combination with at least one water-soluble polymer. The edible multi-layer films may include pockets defined between the layers that house an active component. Upon addition of water, the multi-layer film dissolves, thereby releasing the active component into the water.
Owner:MONOSOL RX
Multi-film structures for thermal insulation
InactiveUS20100028649A1Improve barrier propertiesImprove productivityLamination ancillary operationsLayered product treatmentIonomerThermal insulation
The present invention provides multi-film structures which are designed for applications where thermal insulation is needed. Disclosed multi-film structures comprise a) at least one flexible baffle film including at least one thermoplastic layer comprising one or more ethylene acid copolymers and / or ionomers thereof, the flexible baffle film further comprising a metal or metal oxide layer deposited onto the at least one thermoplastic layer, and b) at least one external layer, wherein the at least one baffle film and the at least one external layer are bonded together at predetermined and selective locations so to form cells within the multi-film structure.
Owner:COLDPACK
Method for preparing antibacterial paper on the basis of interlayer self-assembling technology
InactiveCN102587196AIncreased tensile indexHigh folding resistanceNon-fibrous pulp additionPaper/cardboardCelluloseFiber
The invention discloses a method for preparing antibacterial paper on the basis of an interlayer self-assembling technology. In the method, cationic polyelectrolyte chitosan biguanide hydrochloride (CGH) with an antibacterial function, and anionic polyelectrolyte carboxymethyl cellulose sodium (CMC) are alternately deposited on the surface of a bleached kraft hardwood fiber to prepare a layered ordered self-assembled multilayer ultrathin film, which can improve the strength property of a paper sheet while endowing the paper sheet with a good antibacterial performance. Through the change of the environment and the technical conditions of an interlayer self-assembling system, multilayer film structures with different properties can be obtained on the surface of the bleached kraft hardwood fiber, the retention of an antibacterial agent on the fiber is improved, and the antibacterial effect of the paper sheet is enhanced; a layered ordered self-assembled nano-film is prepared by taking a negatively-charged fiber as a matrix and controlling the adsorption process of a reverse-phase ion system,; the preparation method is simple in production process, less in equipment investment and high in adaptability; the prepared antibacterial paper has better antibacterial performance and strength property; and antibacterial requirements of household paper and food packaging paper can be met better.Owner:ZHEJIANG SCI-TECH UNIV
Microporous-film-and-fiber-reinforced multilayer fluorine-containing cross-linking doping ionic membrane and preparation method thereof
ActiveCN101350418AHigh mechanical strengthGood dimensional stabilitySemi-permeable membranesCell component detailsMultilayer membranePolymer science
The invention pertains to the filed of functional macromolecular composite materials, relating to a microporous film and fiber reinforced multi-layer fluoric cross-linked doped ion film and a preparation method thereof. Fluoric ion-exchange resin (EW=600-1300) is used to form 2-40 film layers, wherein, at least 1 layer is in a cross-linked mesh structure, at least 1 layer is a microporous film taking microporous film as reinforce, at least 1 layer is added with inorganic adulterant which has water-retaining function or proton-exchange function, and at least 1 layer is added with fibers which serve as reinforce. The multi-layer fluoric cross-linked doped ion film adopts microporous film, reinforced fibers, cross-linking and other means to improve the mechanical strength of the ion film to a very large extent; the existence of inorganic adulterant which has water-retaining function ensures much higher electric conductivity of the achieved film under high temperature or low humidity compared with traditional ion-exchange film.
Owner:SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
Metallized multi layer coating
The invention relates to a metallised film, produced by means of a multilayer structure with a binder layer comprising 5 to 50 wt. % of a mixture (A) with: 5 to 100 % of a mixture of co-grafted polymers (C1) and (C2) comprising 90 to 20 wt. % of a polyethylene metallocene (C1) with a density of between 0.865 and 0.915, 10 to 80 wt. % of a polymer (C2) which is either a non-metallocene LLDPE or a homo- or co-polymerised polypropylene and 95 to 0 wt. % of a polyethylene (D) selected from the homo- or co-polymerised polyethylenes and the elastomers. The mixture (A) is such that the content of graft monomer grafted is between 30 and 10<5> ppm, the MFI or flow index in the molten state (standard ASTM D 1238, at 190 DEG C with 2.16kg) is between 0.1 and 30g / 10min and 50 to 95 wt. % of a polypropylene (B) homo- or co-polymer.
Owner:ATOFINA
Pattern forming method, multi-layered resist pattern, multi-layered film for organic solvent development, resist composition, method for manufacturing electronic device, and electronic device
ActiveUS20140113223A1Solve the real problemSemiconductor/solid-state device manufacturingPhotosensitive material processingMultilayer membraneOrganic solvent
There is provided a pattern forming method comprising: (i) a step of forming a first film on a substrate by using a first resin composition (I), (ii) a step of forming a second film on the first film by using a second resin composition (II) different from the resin composition (I), (iii) a step of exposing a multi-layered film having the first film and the second film, and (iv) a step of developing the first film and the second film in the exposed multi-layered film by using an organic solvent-containing developer to form a negative pattern.
Owner:FUJIFILM CORP
Separator assembly
A novel separator assembly for a spiral flow reverse osmosis apparatus is provided. In one embodiment, the separator assembly comprises a central core element comprising at least one permeate exhaust conduit and at least one concentrate exhaust conduit. Each exhaust conduit defines an exhaust channel and one or more openings allowing fluid communication between an exterior surface of the exhaust conduit and the exhaust channel, said exhaust conduits independently defining a cavity between said conduits. The cavity is configured to accommodate a first portion of a membrane stack assembly comprising at least one feed carrier layer, at least one permeate carrier layer, and at least one membrane layer. A first portion of the membrane stack assembly is disposed within the cavity, and a second portion of the membrane stack assembly is wound around the central core element and forms a multilayer membrane assembly disposed around the central core element.
Owner:BL TECH INC
Micro-well based gas sensor array and its making method
ActiveCN102735712AAvoid cross contaminationHigh selectivityDecorative surface effectsSolid-state devicesSensor arrayMultilayer membrane
The invention discloses a micro-well based gas sensor array and its making method. According to the invention, (1) the gas sensor array adopts an MEMS (Micro-Electro-Mechanical Systems) technology, an interdigital electrode is prepared on an SOI wafer surface, an SU-8 photoresist is used to make a micro-well isolation layer for preventing cross contamination of sensitive materials among different interdigital electrodes during sensitive membrane preparation, and each sensor array at least includes 4 interdigital electrode units; (2) an independent heating unit is located under each interdigital electrode, thus greatly improving the sensitivity and response recovery time of the sensor; (3) an organic membrane, an organic/inorganic composite membrane or an organic-inorganic multilayer membrane is taken as the sensitive membrane, and by determining the resistance change during gas adsorption of the sensitive membrane, qualitative and quantitative detection of a gas can be realized; and (4) using a droplet coating, gas jet or electronic injection technique to prepare the sensitive membrane. The gas sensor array has broad application prospects in the fields of atmospheric environment monitoring, aerospace sealed cabin air quality testing and food security, etc.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Method for assembling block copolymer for preparing gold nano array electrode in water phase
InactiveCN101059472AEliminate pollutionEliminate distractionsMaterial electrochemical variablesMultilayer membranePolystyrene
The invention relates to a method for assembling embedded polymer to prepare metal nanometer array electrode in water phase, belonging to nanometer electrode technical field. The invention assembles polythene pyridine-polystyrene embedded polymer in water phase, uses the static function between cation micelle and the metal nanometer particle with negative charge to prepare metal nanometer array electrode. The inventive method is simple which lead in organic solvent, repeatedly applied electrode surface, and reduced cost. The metal nanometer array electrode has better dispersion, improved transmission speed of electrode surface, and better catalysis ability on catechin. The surface of the prepared metal nanometer particle has same charge, applied in the preparation of other metal nanometer array electrode, and self-assemble multilayer membrane, to build complex multi-element nanometer structure, with significant benefit in the research and application of nanometer electrochemistry and biological sensor.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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