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512 results about "Metal microstructure" patented technology
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Microstructure of Metals. the structure of a metal, revealed by an optical or electron microscope. The microscope was first used for studying metals by P. P. Anosov in 1831 in examining damask steel.
Dipole antenna of RF chip
ActiveCN101740862AReduce the impactImproving Impedance MatchingRadiating elements structural formsSlot antennasImpedance matchingDipole antenna
Owner:KUANG CHI INST OF ADVANCED TECH
Method of manufacturing protruding-volute contact, contact made by the method, and inspection equipment or electronic equipment having the contact
InactiveUS20050088193A1Low costImprove reliabilityContact member manufacturingManufacture of electrical instrumentsCouplingCoil spring
A method of manufacturing a protruding-volute contact for attaining electrical continuity with an electrode of electronic equipment or inspection equipment, the method comprising the steps of forming a plastic mold (resist structure) with a metal mold; forming a layer consisting of metallic material on the plastic mold (resist structure) by means of electroforming; and performing convex formation of a metal microstructure made from the layer consisting of metallic material so as to form a spiral spring that protrudes volutedly outward. With such method, an inspection contact or coupling contact having high reliability and capable of attaining electrical continuity of large electric current can be produced at low cost.
Owner:SUMITOMO ELECTRIC IND LTD
Metal to metal bonding for stacked (3D) integrated circuits
ActiveUS8916448B2Reduce the temperatureShorten the timeSemiconductor/solid-state device detailsSolid-state devicesMetal microstructureIntegrated circuit
The present invention provides a stabilized fine textured metal microstructure that constitutes a durable activated surface usable for bonding a 3D stacked chip. A fine-grain layer that resists self anneal enables metal to metal bonding at moderate time and temperature and wider process flexibility.
Owner:INT BUSINESS MASCH CORP
High-sensitivity terahertz microfluidic channel sensor and preparation method thereof
ActiveCN103499534AHigh sensitivity detectionDecorative surface effectsVacuum evaporation coatingResonanceMicrofluidic channel
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Thermopile infrared detector and manufacturing method thereof
InactiveCN104535197AHigh yieldImprove response ratePyrometry using electric radation detectorsMicro structureCMOS
The invention provides a thermopile infrared detector and a manufacturing method of the thermopile infrared detector. The thermopile infrared detector comprises a substrate, a dielectric supporting film, a thermopile, a metamaterial structure, a middle dielectric layer and a metal micro structure layer, wherein a cavity is formed in the substrate, the dielectric supporting film is located above the cavity and supported by the substrate, the thermopile is located on the dielectric supporting film above the cavity, the metamaterial structure is located above the thermopile and comprises a metal plane reflecting mirror, the middle dielectric layer is located on the metal plane reflecting mirror, the metal micro structure layer is located on the middle dielectric layer and comprises one or more structural period units, and each structural period unit comprises one or more geometric figure units having the light adsorption enhance effect within the infrared spectrum range. Due to the thermopile infrared detector, perform absorption within the infrared band broad spectrum range can be achieved, the infrared adsorption rate and the responding rate of the thermopile infrared detector can be improved, and the manufacturing method is compatible with a conventional CMOS technology.
Owner:HANGZHOU SILAN INTEGRATED CIRCUIT
Metamaterial based on liquid metal microfluidics and preparation method thereof
ActiveCN108376839ASimple structureEquivalent permittivity control adjustmentAntennasMicro structureSurface layer
The invention relates to a metamaterial based on liquid metal microfluidics, and belongs to the technical field of electromagnetic communication. The metamaterial solves the problem that the structureform and the material attribute cannot be dynamically adjusted after the existing metamaterial is designed and processed. The metamaterial comprises a bottom metal layer, a middle medium layer and amicrochannel array, wherein the microchannel array is arranged at the surface of the middle medium layer; the bottom metal layer and the middle medium layer are fixed film layers; liquid metal is arranged in a microchannel, and flows in the microchannel; a metal micro-structure is formed at the surface layer of the metamaterial. The metamaterial has the advantages that the liquid metal is driven by external force to flow in the microchannel, the length or width size of the metal micro-structure is adjusted, and the physical attributes of the metamaterial are changed; the application range is widened, and the practical application property is greatly improved.
Owner:BEIJING MECHANICAL EQUIP INST
Preparation method of printed circuit board with metal micro heat sink
ActiveCN102291938ASolve the problem of heat conductionPrinted circuit assemblingCooling/ventilation/heating modificationsMetal microstructurePrinted circuit board
The invention provides a manufacturing method of a PCB (Printed Circuit Board) with a metal micro-radiator. The manufacturing method comprises the following steps of: manufacturing a conventional PCB, manufacturing a metal bottom layer and a metal micro-radiator which are connected into a whole, and integrating the conventional PCB with the metal bottom layer and the metal micro-radiator. According to the manufacturing method disclosed by the invention, the metal micro-radiator with high heat conductivity is integrated with the conventional PCB, and heating elements, such as LEDs (Light Emitting Diode) and the like, can be arranged on the surface of the metal micro-radiator, thus the heat radiated from the heating elements during operation can be conducted to the metal bottom layer through the metal micro-radiator, and then is conducted to the outside of the PCB through the metal bottom layer; therefore, the problem of heat conduction between the heating elements and a metal board is effectively solved through the metal micro-radiator. The PCB (Printed Circuit Board) with the metal micro-radiator is an ideal carrier plate for the heating elements and arrays of the heating elements.
Owner:RAYBEN TECH ZHUHAI
Meta-material film for left-hand circular polarization conversion
InactiveCN105161857AWith circular polarization filter functionKeep the functions passedWaveguide type devicesAntennasPhase differenceLight beam
Owner:欧阳征标 +1
Heterogeneous liga method
The method of fabricating metal microstructures includes the following steps:a) taking a substrate (1, 2) that has a conductive strike surface (2);b) to d) forming a first resin mould (3b) by UV photolithography, the apertures in the first resin mould revealing the conductive strike surface (2) of the substrate;e) electroforming the first element (5) by galvanic deposition of a first metal material in the apertures of the first resin mould (3b),f) removing the first mould (3b) around the first element (5) to expose the conductive strike surface (2) of the substrate;g) to i) forming a new resin mould (7b) by UV photolithography, the apertures in the new resin mould revealing the first element (5), and the conductive strike surface (2) of the substrate;j) electroforming the second element (10) by galvanic deposition of a second metal material in the apertures of the new resin mould (7b) to form said metal microstructure;k) separating said metal microstructure from the substrate (1) and from said new mould (7b).
Owner:NIVAROX FAR
Wire electrode array structure preparation method for micro-electrochemical machining
ActiveCN103706899AEfficient preparationReduce the impactMachining electrodesElectrical-based machining electrodesElectrolysisElectrode array
The invention discloses a wire electrode array structure preparation method for micro-electrochemical machining. The wire electrode array structure preparation method includes the steps of 1), pretreating a metal base; 2), manufacturing a graphical masking film; 3), subjecting the masking film to profound electrolytic corrosion, namely taking the metal base with the graphical surface as a positive electrode for electrolytic machining to obtain a tool negative electrode in a wire electrode template machined and manufactured in the profound electrolytic corrosion, and determining electrolytic corrosion time according to photoresist pattern width and electrolysis current density till to obtain a metal gate line array pattern with the point top; 4), removing back materials, namely removing the back materials corresponding to the manufactured metal gate lines to obtain a wire electrode array integrated with a frame. By means of the method, the metal microstructure array with cross sections different in shapes like square, rectangle and rhombus can be manufactured, so that the metal microstructure array with large depth-to-width ratio, high density and high machining quality can be efficiently realized.
Owner:江苏蔚之领域智能科技有限公司
Metamaterial and filter using same
ActiveCN102610924AHigh dielectric constantMiniaturizationResonatorsAntennasMicro structureDielectric
The invention relates to a metamaterial which comprises at least one metamaterial sheet layer, wherein each metamaterial sheet layer comprises a substrate and a metal micro structure attached on the substrate, the metal micro structure comprises a plurality of fan-shaped structures obtained after at least one straight line with a certain width, which passes through the center of a circle, is etched on a solid circular metal sheet. The invention also provides a filter using the metamaterial. The filter comprises a resonant cavity and a harmonic oscillator arranged inside the resonant cavity, wherein the harmonic oscillator is made of the metamaterial. The dielectric constant of the metamaterial with the metal micro structure is greatly enhanced, and the metamaterial is applied to the filter so that the miniaturization of the filter is facilitated.
Owner:KUANG CHI INST OF ADVANCED TECH
Right-hand circularly-polarized conversion meta-material film
InactiveCN105044814AWith circular polarization filter functionImprove output beam qualityPolarising elementsNanoopticsMicro structurePhase difference
Owner:SHENZHEN UNIV
Method of fabricating medical devices and medical devices made thereby
A method of fabricating medical devices and medical devices made from the method of fabricating a medical device, the medical device, without being exhaustive, may be a medical instrument, an implant, a prosthetic, a body support structure or the like. The method includes work-hardening a work-hardenable metal to achieve a desired microstructure of the metal, then fabricating a medical device in accordance with the desired microstructure utilizing the work-hardened metal. In one form, the desired microstructure is an elongated grain structure. The medical device is created from the grain-elongated metal such that the medical device is oriented relative to the plane of grain elongation. In a particular form of the invention, the medical device is a curved spine plate wherein elongated grains of the work hardened metal are oriented in a plane normal to a curvature of the spine plate. Work-hardening includes forging, cold rolling or hot rolling, and annealing prior to use in medical device fabrication. This creates a metal implant stock that has more strength and flexibility in compression and bending than without undergoing the present work-hardening. These properties are exploited in medical device design, fabrication, fabrication orientation and / or the like to create medical devices such as super strong implants.
Owner:LIFE SPINE INC
New-type light metamaterial and antenna housing
ActiveCN102593604AImprove performanceReduce weightRadiating element housingsDielectric substrateMetal microstructure
The invention relates to a new-type light metamaterial and an antenna housing. The material comprises at least one material sheet, each material sheet comprises at least one dielectric substrate and an artificial metal microstructure arranged on the dielectric substrate. The dielectric substrate is composed of a polymer-based composite material or a foam material. The polymer-based composite material comprises a basal body and reinforced materials combined with the basal body. As the dielectric substrate is made of the polymer-based composite material or the foam material, various materials compensate with each other in the performance to generate synergistic effect; the combination performance of the materials is superior to the original ingredients so as to meet different requirements and fully display respective advantages; besides, the total weight is light and good structural design is realized.
Owner:KUANG CHI INST OF ADVANCED TECH
High-sensitivity terahertz micro-fluid sensor based on band gap plasma resonance
InactiveCN108507969AImprove responsivenessImprove energy utilizationSemi-permeable membranesVolume/mass flow by thermal effectsMicro structurePlasma resonance
The invention provides a high-sensitivity terahertz micro-fluid sensor based on band gap plasma resonance, and relates to the field of design of sensors. The high-sensitivity terahertz micro-fluid sensor comprises a cap, an etching groove, a metal array periodic structure layer, a micro-fluid channel, a metal reflective mirror, a substrate medium chip and a liquid inlet / output channel from top tobottom, wherein the cap is etched with the etching groove, and a metal micro-structure layer is attached to the etching groove; the metal plane reflective mirror is arranged on a substrate. The high-sensitivity terahertz micro-fluid sensor has the advantages that the metal array micro-structure uses the center-symmetric double-circular ring structure as a metal micro-structure array, so that the characteristics of no sensitivity to polarization and double resonance are realized; on the basis of double rings, the number of resonance rings can be increased, so as to realize the higher-order resonance response and multi-resonance detection; compared with the sensor without the etching groove, the sensitivity of the sensor provided by the invention is increased by 25% or above; compared with the existing sensor, the sensitivity is greatly increased; the structure is simple, and the processing and use are easy.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Metasurface polarization regulator
The invention discloses a metasurface polarization regulator. The metasurface polarization regulator is composed of five structural layers. The top layer and the bottom layer are period metal micro-structure layers, the middle layer is a metal film layer, and the top layer, the bottom layer and the middle metal layer are separated by the insulating medium layers. The regulator works in a near infrared band, and the whole thickness of a system is far smaller than the working wavelength; the transmission rate of normal incidence electromagnetic waves is higher than 80%; as geometric parameters of the structure and the physical performances of relative materials are adjusted, the whole phase interval of 0-360 degrees can be covered with the phase difference between transmitted waves of an x component and transmitted waves of a y component, and therefore free adjustment of the polarization state of the electromagnetic waves can be achieved; for example, the transmission polarization state of electromagnetic waves transmitted through linear polarization can be transformed into the circular polarization state, the elliptical polarization state or the linear polarization state or even the complete polarization inversion state.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Microfluid heat radiation channel, heat radiation method and preparation method thereof
ActiveCN107275297AReduce technical difficultyReduce processing costsSemiconductor/solid-state device detailsSolid-state devicesSpray nozzleBonding process
The invention belongs to the field of microelectronic heat radiation technology. For aiming at problems in prior art, the invention provides a microfluid heat radiation channel, a heat radiation method and a preparation method. According to the preparation method, a total metal heat radiation microchannel based on a distributed nozzle structure is realized through processes of photoetching, metal micro-electroforming and metal bonding. The preparation method comprises the steps of preparing corresponding microstructure molds on a bottom layer, an intermediate layer and a top metal substrate by means of a photosensitive material; through a metal micro-electroforming process, transferring the micro-structure molds for preparing a metal microstructure A; performing hole processing on the metal microstructure A through a laser fine machining process, and forming a metal microstructure B with communicating holes; performing mechanical polishing on the metal microstructure B, and forming the microfluid heat radiation channel based on the distributed nozzle structure through a metal bonding process.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Metal to metal bonding for stacked (3D) integrated circuits
ActiveUS20140191418A1Reduce the temperatureShorten the timeCooking-vessel materialsSemiconductor/solid-state device detailsMetal microstructureFine grain
The present invention provides a stabilized fine textured metal microstructure that constitutes a durable activated surface usable for bonding a 3D stacked chip. A fine-grain layer that resists self anneal enables metal to metal bonding at moderate time and temperature and wider process flexibility.
Owner:IBM CORP
Wave absorbing metamaterial
ActiveCN102480909AEffective absorptionImprove practicalityMagnetic/electric field screeningThree-dimensional spaceClassical mechanics
The invention relates to a wave absorbing metamaterial which comprises a substrate and a plurality of artificial metal microstructures which are periodically arranged inside the substrate. When electromagnetic waves pass through the wave absorbing metamaterial, a relative dielectric constant and a relative magnetic conductivity of the metameterial are approximately equal. In the invention, a waveabsorbing principle different from a wave absorbing principle of a conventional wave absorbing material is adopted; an ideal wave absorbing effect is achieved by periodically arranging various artificial metal microstructures in the substrate and regulating the sizes of the artificial metal microstructures; and the wave absorbing metamaterial has the advantages that the weight is light, the thickness is low and an electromagnetic parameter is easy to regulate. Furthermore, the artificial metal microstructures of the wave absorbing metamaterial are three-dimensional structures and the artificial metal microstructures which are the three-dimensional structures can effectively absorb the electromagnetic waves in random incident directions in a three-dimensional space, so that the practicality of the wave absorbing metamaterial is improved.
Owner:KUANG CHI INST OF ADVANCED TECH +1
TeraHertz wave electric control modulator
ActiveCN108287418AReduce energy consumptionActive amplitude adjustmentNon-linear opticsVanadium dioxideParticulates
The invention provides a TeraHertz wave electric control modulator. The modulator includes a lining layer and multiple rows of metal microstructure arrays. The metal microstructure arrays include conductive metal strips and multiple metal frames, wherein the metal strips and the metal frames are arranged on the surface of the lining layer; the metal frames are arranged in the length direction of the conductive metal strips, and the conductive metal strips and the metal frames form sealed patterns; each metal frame is composed of at least two conductive metal strips connected with each other through vanadium dioxide particle blocks. By means of external current, metal-insulated phase transition of particulate vanadium dioxide is controlled, that is to say that the conductivity of the vanadium dioxide particle blocks is adjusted and controlled, and therefore the resonant frequency of a metal microstructure is changed to achieve efficient and fast adjustment and control over the transmitted intensity of TeraHertz waves.
Owner:UNIV OF SCI & TECH OF CHINA
Photoelectric conversion device, light detecting device, and light detecting method
ActiveUS20120325301A1Simple manufacturing processHigh Photoelectric Conversion EfficiencyElectrolytic capacitorsFinal product manufactureSchottky barrierResonance
The present invention has an object to provide a photoelectric conversion device which can be manufactured through a simple manufacturing process, achieve photoelectric conversion over a wide range of wavelength regions, and attain high photoelectric conversion efficiency even in the infrared wavelength region, a photodetection device, and a photodetection method. This photoelectric conversion device 1 includes a substrate 2 containing single crystalline titanium dioxide, adhesion layers 2c formed on a surface 2a of the substrate 2, metal microstructure bodies 3, each of which has a volume of 1,000 nm3 or more and 3,000,000 nm3 or less, arranged at predetermined intervals in a predetermined direction on surfaces of the adhesion layers 2c, a container 4 for containing an electrolyte solution L in an arrangement region of the metal microstructure bodies 3 on the surface 2a of the substrate 2, a conductive layer 7 formed on a rear surface 2b of the substrate 2, and a counter electrode 5 in contact with the electrolyte solution L in the container 4; and the metal microstructure bodies 3 adhere onto the substrate 2 through the adhesion layers 2c, a Schottky barrier is formed at an interface of the substrate 2 with the metal microstructure bodies 3, and photoelectric conversion is carried out for light in an infrared region by utilizing a plasmon resonance phenomenon.
Owner:HOKKAIDO UNIVERSITY
Device and method for measuring three-dimensional distribution of residual stress in metal microstructure
InactiveCN102608144AThe determination workload is smallHigh measurement accuracyMaterial analysis using radiation diffractionResidual strainSoft x ray
The invention discloses a device for measuring three-dimensional distribution of residual stress in a metal microstructure, which comprises an X-ray generating system, a microdiffraction and light path guide system, a work system, a detection system, a computer and a control system; the X-ray generating system generates X-rays with short wavelengths; the X-rays irradiate on points to be measured on a metal microstructural sample to be measured in the work system through the microdiffraction and light path guide system; then the X-rays enter the detection system through the microdiffraction and light path guide system after being subjected to diffraction by the sample; the detection system receives the X-rays entering the detection system for detection and sends obtained detection data to the computer; the computer takes analysis process on the received detection data to obtain residual strain and residual stress data of the point to be measured of the metal microstructral sample and take error analysis and parameter amendment; and after the test for the current point is finished, the computer sends a command to the control system for changing the detection point of the sample. According to the invention, the three-dimensional distribution of the residual strain and the residual stress in the penetrating range of the X-ray in a metal microstructure can be measured automatically and factually in a lossless way; therefore, the device provided by the invention is efficient and lossless and is convenient to operate.
Owner:SUZHOU UNIV OF SCI & TECH
Conformal ceramic metamaterial and preparation method thereof
InactiveCN102757229AGood wave permeabilityHigh strengthCeramic layered productsAntennasScreen printingMetallurgy
The invention provides a conformal ceramic metamaterial and a preparation method of the conformal ceramic metamaterial. The method comprises the following steps of: degassing and pre-polymerizing suspension comprising ceramic powder and an organic system to obtain slurry, pouring the slurry into a first mold, and curing to obtain a green body; preparing the ceramic powder into ceramic slurry and casting into a green ceramic chip, and preparing a metal microstructure on the green ceramic chip through a screen printing technology; attaching the prepared green ceramic chip comprising the metal microstructure to the outer surface of the green body, and obtaining the green body with the metal microstructure; pouring the slurry into a second mold, inserting the green body with the metal microstructure, and curing to obtain a blank with a conformal structure comprising the metal microstructure; and performing degluing and sintering the blank with the conformal structure comprising the metal microstructure, thus obtaining the conformal ceramic metamaterial. The curved conformal ceramic metamaterial is prepared by organically combining a gel-casting molding method and a low temperature co-fired ceramic (LTCC) or high temperature co-fired ceramic (HTCC) technology, so that the conformal ceramic metamaterial has high wave-penetrating performance and high-temperature resistance; and because the inner and outer ceramic chip layers are combined in a conformal mode, the strength of the conformal ceramic metamaterial is improved.
Owner:KUANG CHI INNOVATIVE TECH
Device and method for controlling residual stress on surface of metal microstructure
InactiveCN101722361AControl residual stressImprove mechanical propertiesLaser beam welding apparatusPulse height analyzerX-ray
The invention discloses a device and a method for controlling the residual stress on the surface of a metal microstructure. A laser micro shot blasting generation system and a measuring feedback system are respectively connected with a control system; a pulse laser beam is focused on an area to be subjected to shot blasting on the surface of a workpiece; incident X rays emitted by a synchronous accelerating irradiation light source enter a measurement box, are diffracted by the surface of the workpiece and then are received by a detector; electric pulse is amplified by an amplifier and enters a pulse height analyzer; signal pulse is transmitted to a counter, processed by a microcomputer and fed back to a computer control system by the microcomputer for error analysis and parameter correction; and a charge Coupled device (CCD) optical camera is used for positioning and monitoring a processing area on the surface of the workpiece. The invention effectively controls the residual stress on the surface of the metal microstructure, improves the mechanical properties of the metal micro component, prolongs the service life of the metal micro component, and enables the surface of the metal micro component to generate the residual pressure stress with the depth up to over 20mu m and the pressure ranging from -120 to -100MPa.
Owner:JIANGSU UNIV
Left-handed circular-polarization conversion metamaterial film
InactiveUS20180131100A1Simple structureImprove conversion efficiencyPolarising elementsWaveguide type devicesPhase differenceDielectric substrate
The present invention discloses a left-handed circular-polarization conversion metamaterial film, and is of an optical frequency band metamaterial structure, comprising a first metal microstructure layer, a dielectric substrate layer and a second metal microstructure layer, wherein the first and the second metal microstructure layers are attached to the two sides of the dielectric substrate layer; an upper surface of the first metal microstructure layer is an incident surface; the lower surface of the second metal microstructure layer is an exit surface; the first and the second metal microstructure layers are of chirally-symmetric right-handed windmill structures or spiral chirally-symmetric right-handed artificial structures, left-hand-rotated angle using the structure center as a rotation center is formed between the first and the second metal microstructure layers, the amplitudes of two orthogonal components of output light waves are equal, and a phase difference of the two orthogonal components is odd times of 90 degrees.
Owner:OUYANG ZHENGBIAO
Method for realizing ultra-wideband light absorption and a composite micro-structure
ActiveCN110196464AExcellent broadband light absorption performanceImprove absorption efficiencyOptical elementsUltra-widebandMicro structure
The present invention discloses a method for realizing ultra-wideband light absorption and a composite micro-structure. The method combines a metal-medium periodic film stack with a metal micro-structure array, namely, carries a metal micro-structure array above a conventional metal-medium periodic film stack, combines wide-band near-field reflection provided by the metal-medium periodic film stack and surface plasmon resonance effect of the metal micro-structure array, to achieve ultra-wideband light absorption enhancement in a visible-near infrared band. In addition, a broadband absorbing device designed by the method does not require use of precious metals such as gold or silver, has relatively low preparation costs, has superior polarization-insensitive broadband absorption performanceand extremely high manufacturing tolerances, and has great application prospects in the fields of enhanced nano imaging, stealth materials, solar cells, light modulators, and touch screens.
Owner:JIANGNAN UNIV
Method of manufacturing protruding-volute contact
InactiveUS7219426B2Low costImprove reliabilityContact member manufacturingElectrical testingCouplingMetallic materials
Owner:SUMITOMO ELECTRIC IND LTD
Semiconductor device fabricated using a metal microstructure control process
ActiveUS20070278584A1Semiconductor/solid-state device manufacturingSemiconductor devicesGate dielectricHydrogen
The invention provides a method for manufacturing a semiconductor device that comprises placing a metallic gate layer over a gate dielectric layer where the metallic gate layer has a crystallographic orientation, and re-orienting the crystallographic orientation of the metallic gate layer by subjecting the metallic gate layer to a hydrogen anneal.
Owner:TEXAS INSTR INC
Fabrication of metallic microstructures via exposure of photosensitive composition
InactiveUS7399579B2Short amount of timeReadily availableMaterial nanotechnologyDecorative surface effectsConductive materialsElectromagnetic radiation
A method of forming microstructures. An article including a metal atom precursor is disproportionally exposed to electromagnetic radiation in an amount and intensity sufficient to convert some of the precursor to elemental metal. Additional conductive material may then be deposited onto the elemental metal to produce a microstructure.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Quantum dot photoelectric detector and preparation method thereof
ActiveCN107275421AHigh sensitivityEasy to prepareMaterial nanotechnologyFinal product manufactureOpto electronicWavelength modulation
The invention discloses a quantum dot photoelectric detector and preparation method thereof. The preparation method includes the steps of coating PMMA photoresist on an ITO glass substrate in a spinning mode; performing photoresist exposure and microstructural graph defining; evaporating a metal film of a certain thickness; performing photoresist stripping and generating a metal microstructure; coating prepared quantum dots on the abovementioned substrate in a spinning or spraying mode to form a film; and continuing to evaporate metal of a certain thickness to form a back bottom electrode, thereby completing device preparation. The preparation method provided by the invention utilizes narrow-band filtering and optical field enhancing functions of a metal microstructure, performs wavelength modulation and sensitivity enhancement on quantum dot photoelectric response, and a quantum dot film photoelectric effect is utilized, so that current between the ITO and the back bottom electrode changes remarkably. The preparation method selects appropriate metal and a quantum dot material system, and adjusts the structural design of the metal microstructure array and the quantum dot size, thereby realizing a high-sensitivity tunable narrow-band photoelectric detector.
Owner:HUAZHONG UNIV OF SCI & TECH
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