85results about How to "Change electrical properties" patented technology

A biosensor which comprises a substrate (101) having a buried electronic sensing element and a substrate surface (124) above the buried electronic sensing element; a structured top layer (125) covering the substrate surface (124), having a top surface above the substrate surface (124), and comprising at least one stimulation and / or sensing electrode (116) and a channel (121) for holding the biomolecule by means of suction through said channel (121) arranged between the top surface (125) and the substrate surface (124), the sensing electrode (116) being electrically coupled to the electronic sensing element; wherein the top surface (125) is provided for placing a biomolecule present in a sample solution thereupon, the sensing electrode (116) is provided for sensing electrical variations in and presence of the biomolecule.

The present invention is directed to a multiwire nanowire field effect transistor (nwFET) device for the measurement. The device includes a sensing nanowire having a first end and a second end and a nanowire FET having a first end and a second end, wherein the first end of the sensing nanowire is connected to the nanowire FET to form a node. Additionally, the first end of the nanowire FET is connected to a source electrode, the second end of the nanowire FET is connected to a drain electrode, and the second end of the sensing nanowire is connected to a base electrode. The sensing nanowire is derivatized with a plurality of immobilized capture probes that are specific for a target(s) of interest. The device is used to detect biomolecules or to detect the change in the ionic environment of a sample. In a further embodiment, the sensing nanowire is derivatized with amino, carboxyl or hydroxyl groups. Upon a change in ionic environment, or binding of a molecule to the sensing nanowire, the sensing nanowire current (IB) fluctuates. This fluctuation is amplified and readout as the nanowire FET drain current (ID). Accordingly, the present invention provides for label-free detection of biomolecules and may find use as a point-of-care diagnostic device.

The invention relates to a two-dimensional layered organic-inorganic composite perovskite material optical detector and a manufacturing method thereof. The optical detector comprises glass which acts as a substrate, two-dimensional layered organic-inorganic composite perovskite series material which is spin-coated on the substrate and acts as a photosensitive layer, and a gold thin-film which is vapor-plated on the photosensitive layer and acts as a source electrode and a drain electrode. Compared with the optical detectors in the prior, detection of incident light of the specific wavelength range can be realized, and intensity of incident light can be rapidly obtained through the size of photocurrent.

An electronic circuitry is provided for reading out a memory element (ME). The electronic circuitry comprises a first electronic path (IP) being coupled to the memory element (ME), a second electronic path (RP) having predetermined electrical properties, and a basic detection element (BDE) being coupled to the first and second electronic paths (IP, RP) such that the information contained in the memory element (ME) can be determined by the basic detection element (BDE) based on the relation of a digital signal being propagated over the first path (IP) to a digital signal being propagated over the second path (RP).

The present invention provides a novel system and device for wearables for humans and animals that capture and store kinematic and kinetic data and movement during training, rehabilitation, real-time events, and the like, analyze such data and movement in real-time during and after such activities, and provide output, feedback, assessment, and actionable biomechanical data and information about the wearer.

The invention discloses a multiferroic liquid and a preparation method thereof, for solving the defects that a solid-state multiferroic material is large in coercive force, cannot be structurally changed once being formed, is low in magneto-electric coupling effect and is easily broken down by voltages. The multiferroic liquid is internally provided with a magnetic material, the outer surface of the magnetic material is wrapped by a ferroelectric material, nanometer particles with magneto-electric core shell structures are uniformly dispersed in a mixed liquid of a base solution and a surfactant, and a stable suspending liquid is formed in such a way. The multiferroic liquid has ferroelectricity and magnetism, also has fluidity and is quite small in coercive force. The length and the thickness of a nanometer chain composed of the nanometer particles in the multiferroic liquid can be adjsuted by applying different electric fields or magnetic fields to the multiferroic liquid according to needs, and accordingly, the electrical property, the magnetic property, the hydrodynamic property, the optical property and the acoustic property of the multiferroic liquid are adjusted. The invention brings forward the concept of the multiferroic liquid for the first time ever, and also provides the preparation method, expanding a new research direction for research on a multiferroic material.

A low temperature co-fired ceramic (LTCC) filter production process and a LTCC filter relates to a production process of the LTCC filter. A high cost problem of a dry process of the LTCC filter caused by employing processes of laser drilling and micropore grouting can be solved. The production process comprises the following steps: A. preparing slurries; B. flowing the slurries so as to obtain membrane; C. printing metal patterns; D. printing and forming embedded conductive poles which means that a mode of repeatedly printing is employed so as to form embedded conductive poles ; E. printing polarity identification; F. cutting; G. performing binder removal and sintering; H. coating terminal electrodes; I. electroplating. The several groups of embedded conductive poles not only play a role of conductive interconnection but also play the vital role on electrical property of the filter, wherein the embedded conductive poles are as a plurality of independent resonance bodies in the filter. The electrical property of the filter can be changed by changing diameters, heights and sizes of the several groups of the embedded conductive poles. Using the several groups of the embedded conductive poles of the invention can improve conductive paste of printing points and printing centrosymmetrically precision so that conductive pole disconnection and deformation can be effectively reduced. And the embedded conductive poles can achieve co firing with ceramic powders. Reliability is high and a qualified rate can be substantially raised.

The invention discloses In-doped ZnO monodisperse nano granules and a synthesizing method thereof. The nano granules have hexagonal wurtzite structures, and the diameters of the granules are 1 to 100 nanometers. The synthesizing method comprises the following steps of: mixing fatty acid zinc, fatty acid indium and high-boiling organic solvent and putting the mixture into a reaction flask, heating the mixture to between 50 and 200 DEG C with magnetic stirring, pumping vacuum and removing water vapor and oxygen in the reaction system, heating the mixture to between 200 and 350 DEG C under the inert protective atmosphere, quickly injecting stearyl alcohol of 100 to 250 DEG C into the reaction flask, preserving the heat for 1 to 1,000 minutes, and performing centrifugal separation on the mixture to obtain the In-doped ZnO nano granules. The synthesizing method has the advantages of simple preparation process, low cost, good repeatability and easy industrialized production; and the obtained nano crystal has excellent photoelectric performance and is expected to be applied in many fields of flexible display, transparent electrodes, ultraviolet detection and the like.

The invention discloses a zinc oxide / polypyrrole nano composite resistance-type film gas sensor and a production method thereof. The gas sensor comprises a ceramic substrate, a fork gold electrode and a gas sensitive film which are sequentially arranged, wherein the gas sensitive film is a zinc oxide / polypyrrole compound with a nano lamella structure, the large specific surface area of the nano compound is favorable for the adsorption and scattering of the gas, the n-type zinc oxide and the p-type polypyrrole nano lamella compounds are well contacted with each other to form a p / n node, and the interface resistance is small, so that the electrical property is remarkably changed after being subject to the influence of the adsorption gas, thus the gas sensor is high in response sensitivity on the ammonia gas under the room temperature and can be widely applied in the fields of precisely measuring and controlling the low-concentration ammonia gas in the industrial and agricultural production process and the atmosphere environment. The invention also provides a method for preparing the gas sensor. The method has the advantages of simplicity in preparation, low cost and the like and is applicable to the mass production.

The invention belongs to the field of materials chemistry and in particular relates to a method for improving the dispersibility of a single-walled carbon nanotube in aqueous solution. The method comprises the following detailed steps of: dispersing a single-walled carbon nanotube purification sample in the aqueous solution of ethanol, and performing ultrasonic dispersion on the sample to uniformly suspense the sample in the solution; quickly cooling the obtained solution by using liquid nitrogen as a cooling medium and continuously supplying the cooling medium to guarantee that the cooling temperature of the sample reaches -50 to -190 DEG C; at normal temperature and under normal pressure, placing the solid sample in a closed device in which a high-speed blade rotates, wherein the rotation speed is 22,500rpm, the rotation time is 1 minute and the crushing process is repeated for 1 to 7 times; and filtering and drying the obtained sample to obtain the single-walled carbon nanotube aqueous solution with relatively good water solubility finally. In the invention, a physical method is adopted at normal temperature and under normal pressure, so that the structure of the single-walled carbon nanotube in aqueous solution is not damaged in a treatment process; the ethanol serving as a raw material is simple and available and causes no pollution to environment; and the method has the advantages of simple process and easy processing, so that the method is suitable for commercial production.

The invention discloses a method for preparing a semimetallic state conductive titanium black nano-tube array. According to the preparation method, the raw material titanium sheet is oxidized by an electrochemical method to prepare a titanium dioxide nano-tube array firstly, and the semimetallic state conductive titanium black nano-tube array is further prepared by in-situ reduction and doping. The preparation method is mild in reacting condition and simple in process, and the prepared semimetallic state conductive titanium black nano-tube array is orderly and has a complete nonrandom structure and good electrochemical performance.

A laser type coordinate sensing system for touch module includes an X-direction light emitting array, an X-direction light receiving array, a Y-direction light emitting array, and a Y-direction light receiving array provided at four sides of a touch area on a substrate, so that a plurality of X-direction laser beams projected from the X-direction light emitting array and a plurality of Y-direction laser beams projected from the Y-direction light emitting array densely and orthogonally intersect with one another in the touch area on the substrate. The laser type coordinate sensing system for touch module may be associated with a display panel to form a laser type touch panel.

This invention relates to a tungsten trioxide and polymer nanometer shell micro ball and the process method, which belongs to organic and inorganic, compound materials technique field and are processed by emulsion polymerization on the surface of tungsten trioxide particles. It covers macromolecule materials on the tungsten trioxide nanometer particles to avoid the reaction between outer environments with the particles and to alter the particles optics properties and it together with other organic semi-conductor makes effective compound to improve its photoelectricity property or process property.

The invention belongs to the technical field of photoelectric detectors, and concretely relates to p-n junction self-driven solar blind ultraviolet detector based on an organic-inorganic composite structure and a preparation method thereof. The structure of the device includes a substrate, a n-type gallium oxide micron wire, a p-type organic conductive polymer nano film, and metal contact electrodes prepared on the p-type and n-type layers. The characteristics of the self-driven solar blind ultraviolet detector with the organic-inorganic composite structure are that a core-shell structure is formed by the p-type organic conductive polymer nano film and the n-type gallium oxide micron wire, and so the self-driven solar blind ultraviolet detector has good photoelectric characteristics and deep ultraviolet selectivity when operated under zero bias voltage. The device solves the problem that a p-type material in a conventional inorganic semiconductor deep ultraviolet photodetector of a p-nstructure cannot be controllably prepared. The detector of the invention is simple in preparation process and has great application prospect in the field of solar blind ultraviolet detection.

The invention discloses a multiferroic liquid and a preparation method of the multiferroic liquid. The multiferroic liquid of the invention is obtained via the following steps: uniformly mixing a base fluid and a surface active agent as a mixed liquid; then adding ferroelectric nano-particles and magnetic nano-particles in the mixed liquid, shaking the mixture and putting the mixture in a sealed container, and putting the container in a shaking table to shake for more than half an hour to make nano-particles evenly dispersed in the mixed liquid, thereby obtaining a stable suspension liquid, namely the multiferroic liquid. The multiferroic liquid of the invention not only has magnetism and ferroelectricity, but also has fluidity, and is very sensitive to a magnetic field and an electric field. Compared with solid ferroelectric material, the multiferroic liquid of the invention has smaller coercive force, and the particles are easy to rotate under the electric field or the magnetic field. The multiferroic liquid of the invention also has a magneto-optic effect and a refraction effect, which are not possessed by the solid multiferroic material. The invention presents the multiferroic liquid and the preparation method of the multiferroic liquid for the first time so as to develop a new direction for researching the multiferroic material.

The invention relates to a rapid preparation method of a monoclinic phase VO2 metal-insulator phase transformation ceramic material. The method comprises the following steps: reducing V2O5 with citric acid by a hydrothermal method, carrying out centrifugal cleaning to obtain an orthorhombic phase VO2 nanopowder, carrying out high-temperature heat treatment to obtain a monoclinic phase VO2 powder, and finally compressing and sintering to obtain the monoclinic phase VO2 metal-insulator phase transformation ceramic. The process is simple; preparation efficiency is high; sintering temperature is low; energy consumption is low; cost is low; the method is environment friendly, nontoxic and pollution-free; and the prepared ceramic has good phase transformation property and stable and uniform structure.

The embodiment of the invention discloses a perovskite solar cell device and a method for manufacturing the same. The perovskite solar cell device comprises a substrate, an anode (ITO), an electron beam evaporation inorganic hole transport layer (NiOx), an inorganic perovskite light absorbing layer, an electron beam evaporation inorganic electron transport layer (Nb2O5), and an electron beam evaporation cathode (Ag) which are successively stacked. The all-inorganic perovskite solar cell device and the manufacturing method thereof obtain high energy conversion efficiency, and the hole transportlayer nickel oxide can achieve doping of different elements and different concentrations by double-source electron beam co-evaporation so as to improve optical and electrical properties. The all-inorganic perovskite cell device has a low processing cost and can achieve large-area processing, and has a good application prospect in the field of solar cells.

The invention discloses a multiferroic liquid and a preparation method thereof, and aims at solving the defects that a solid multiferroic material is large in coercive force; the structure cannot be changed once the solid multiferroic material is formed; the magnetoelectric coupling effect is weak; and the solid multiferroic material is easily broken down by voltage. The multiferroic liquid is a stable suspension liquid which is formed by evenly dispersing nano particles with an electric-magnetic core-shell structure, which are formed by wrapping the outer surface of an internal ferroelectric material with a magnetic material, into a mixed liquid of a base liquid and a surfactant. The multiferroic liquid disclosed by the invention not only has ferroelectricity and magnetism, but also has liquidity and relatively small coercive force; and the lengths and the thicknesses of nanochains formed by the nano particles in the multiferroic liquid can be adjusted by applying different electric fields or magnetic fields to the multiferroic liquid according to the requirements, so that the characteristics of the multiferroic liquid in electricity, magnetics, fluid mechanics, optics and acoustics are adjusted. The invention provides the concept of the multiferroic liquid for the first time, and provides a preparation method. A new research direction is opened up for research of multiferroic materials.

A formation method of a semiconductor device comprises the steps of providing a substrate, wherein a grid structure is formed on the surface of the substrate; etching to remove the partial thickness of substrate at the two sides of the grid structure to form grooves; carrying out the oxidation treatment on the surfaces of the grooves to form oxidation films, and repairing the crystal lattice damage on the surfaces of the grooves; removing the oxidation films to expose the surfaces of the grooves; adopting an epitaxy process to form the stress layers filling the grooves. According to the present invention, before the stress layers are formed, the oxidation treatment is carried out on the surfaces of the grooves, the materials having the crystal lattice damage on the surfaces of the grooves are transformed into the oxidation film materials, and then the oxidation films are removed, so that the exposed crystal lattices on the surfaces of the grooves are high in quality, and accordingly, the stress layers of high quality and few defects are conducive to being formed, the stress actions of the stress layers in a channel region are larger, and a driving current of the formed semiconductor device is improved.

A thin-film transistor (TFT) is described to have a gate layer, an insulating layer, a semiconductor layer, and a source / drain layer formed on a flexible substrate. The source and the drain layers are separated by a channel with a special shape. This does not only increase the aspect ratio of the channel per unit area, the source and the drain also have multiple directions for transmitting carriers. The carrier mobility of the TFT is thus enhanced with uniform and stable circuit properties.

The invention relates to a waveguide-microstrip conversion structure in a terminating capacitor arc probe form, and belongs to the technical field of radio frequency circuits. An arc-shaped probe structure is realized through a gold strip crimping process, one end of a gold strip is crimped on a microstrip line and then is bridged in a waveguide, the other end of the gold strip is crimped on a chip capacitor, and the conversion between a microstrip TEM mode and a waveguide TE10 mode is realized in an electric field coupling mode. The waveguide-microstrip conversion structure does not need microstrip linear conversion, is good in performance and simple in structure, and can be applied to a sub-millimeter wave band radio frequency signal transmission circuit.

The application discloses a display panel and a driving method thereof, and belongs to the display technology field. The display panel comprises a plurality of pixel unit sets, each pixel unit set comprises a plurality of pixel units, and a pixel electrode and a thin film transistor set are arranged in each pixel unit. Each thin film transistor set at least comprises a first thin film transistor and a second thin film transistor. The first pole of the first thin film transistor is electrically connected with a data line, the second pole is connected with the first pole of the second thin filmtransistor electrically, and the grid is connected with a first grid control signal line electrically. The second pole of the second thin film transistor is connected with the pixel electrode, and thegrid is connected with a second grid control signal line electrically. The above display panel controls the time-sharing conduction of the first and second thin film transistors in the thin film transistor sets to keep the sustaining voltages of the pixel electrodes, thereby avoiding the situation that the thin film transistors are biased for a long time, so that the characteristics change.

The invention provides a method for forming a shallow trench isolation structure, comprising the following steps: providing a substrate, wherein a pad oxide layer and a silicon nitride layer are sequentially formed on the substrate, and openings exposing the substrate are formed in the pad oxide layer and the silicon nitride layer; forming shallow trenches on the substrate along the openings; forming a protective oxide layer covering the surfaces of the shallow trenches; forming a first oxide layer covering the protective oxide layer and filling the shallow trenches; back-etching the first oxide layer; forming a supplementary oxide layer covering part of the protective oxide layer; forming a second oxide layer covering the protective oxide layer and the supplementary oxide layer; flattening the first oxide layer, the second oxide layer and the protective oxide layer until the silicon nitride layer is exposed; and removing the silicon nitride layer. The method can avoid the change of electrical properties of devices caused by damage of silicon oxide on the top of side walls, improve the insulating performance of STI, and prevent electric leakage of devices.

A component made of electrically insulating material with a detection structure for mechanical damage such as cracks is disclosed. The detection structure is a conductor. The electrical properties of the detection structure are modified as more and more cracks are formed such that the component will be replaced in time before breaking. The electrical conductor is formed by particles that are in contact with each other and have a metallic surface such that an electrical conductor is created which is particularly sensitive to mechanical damage, thus rendering the detection structure highly sensitive. Furthermore, if the metallic surface is produced merely by cladding the particles while the inside of the particles is made of the same material as the component, a conductor featuring an adapted thermal expansion behavior is created for components that are subject to great thermal stress, e.g. heat shield panels.

The invention discloses an ink-jet-printing-technology-based preparation method of flexible wireless pressure detection system. The preparation method is characterized in that metal graphical processing of a flexible substrate surface is realized by ion exchange based on an all-wet chemical process; a flexible pressure sensor and a flexible antenna are prepared successively to realize signal transmitting and receiving; and then integration is carried out to form a flexible wireless pressure-sensitive sensor. Mechanical signals can be collected, transmitted and processed. During the metal graphical process, a common ink-jet printer can be used for printing with the low cost; and the obtained silver circuit is continuous and compact and the conductivity is high. The bonding force between a pressure sensing unit, the silver circuit, and the flexible substrate is strengthened; the pressure response frequency reaches 10000 hertz; and the pressure response range is from 10 pascal and 1 megapascal. During the flexible antenna signal collection and transmission, pressure response and transmission can be completed within 0.02 seconds. The flexible equipment has high stability; and the bending fatigue test demonstrates that the stability of the circuit characteristic of the system is kept after repeated 10000-times testing.

The invention discloses a robot grinding consumable automatic replacing system applying infrared temperature measurement. The robot grinding consumable automatic replacing system structurally comprises a main shaft rod, a joint frame, a device shell, a friction wheel, a through hole and an intelligent replacing device, wherein the device shell is located on the right end face of the joint frame and is in clearance fit with the joint frame, the main shaft rod and the joint frame are perpendicular to each other and fixedly connected into an integrated structure, the intelligent replacing deviceis located in the device shell and movably connected with the device shell, the friction wheel is located on the left end face of the intelligent replacing device and connected with the intelligent replacing device in a clamped mode, and the through hole is formed in the center of the left end face of the friction wheel to form an integrated structure, so that grinding wheel loss monitoring is carried out by the infrared temperature measurement principle instead of manual work; automatic grinding wheel output is carried out by utilizing the characteristic of thermosensitive magnets, so that the disassembling difficulty is lowered; and cooperative fixing and separation are carried out in a magnetic attraction mode, so that stability is improved, and labor intensity is lowered.

The invention provides a method for preparing a quantum dot solid film, wherein the quantum dot solid film is an N-type quantum dot solid film. The preparation method comprises the steps of providinga P-type quantum dot solid film; immersing the P-type quantum dot solid film in a halogenated hyamine solution to perform quantum dot surface ligand exchange, and then drying and washing to obtain theN-type quantum dot solid film.

A component made of electrically insulating material with a detection structure for mechanical damage such as cracks is disclosed. The detection structure is a conductor. The electrical properties of the detection structure are modified as more and more cracks are formed such that the component will be replaced in time before breaking. The electrical conductor is formed by particles that are in contact with each other and have a metallic surface such that an electrical conductor is created which is particularly sensitive to mechanical damage, thus rendering the detection structure highly sensitive. Furthermore, if the metallic surface is produced merely by cladding the particles while the inside of the particles is made of the same material as the component, a conductor featuring an adapted thermal expansion behavior is created for components that are subject to great thermal stress, e.g. heat shield panels.