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.

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 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 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.

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 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.

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.