130 results about "Channel electrode" patented technology

The invention relates to a transistor with a storage effect and a semiconductor device thereof, the transistor with the storage effect has the storage effect due to the fact that a material with the storage effect is added to an insulating layer or a semiconductor layer, a channel electrode is arranged in a channel region, and the channel electrode and a channel can form junction capacitance, so that the storage effect is achieved. The transistor is also provided with a planar transistor structure and a vertical transistor structure, so that the difference between two lines representing a state 0 and a state 1 can be expanded by adding charge regulation of a channel electrode junction capacitor, the existing 2 state is changed into a multi-state, meanwhile, regulation is changed into a three-dimensional state from a two-dimensional state, and the transistor can be further expanded into a multi-dimensional state; the invention provides a thought of reducing the area of a required circuit and reducing the energy consumption of equipment, and the application scene of the transistor is greatly expanded.

The invention relates to the technical field of resistivity method geophysical prospecting detection, and discloses a soil reinforcement effect detection device and method based on electrical resistance tomography. The technical problems that in the prior art, an electrode device is difficult to cover the whole pile body, so that an imaging result has certain limitation, and the electrode device is difficult to adapt to pile bodies of different sizes and shapes are solved. The device comprises a rotary spray irrigation pile, a high-pressure slurry pump and an air compressor, the rotary spray irrigation pile comprises a pipe wall and a grouting pipe, a plurality of electrodes are arranged on the outer side of the pipe wall at intervals, an electrode line channel is arranged on the inner side of the pipe wall, and the electrodes are connected through a wire penetrating through the electrode line channel to form an electrode measurement network. The device has the advantages that the reinforcing process of the rotary spray irrigation pile is monitored in real time, and the physical characteristics of foundation soil or a reinforcing body are accurately analyzed.

The invention provides an indigo electrochemical reduction reactor using a micro-channel carbon felt electrode and an indigo electrochemical reduction reaction method. A reaction device of the reactor comprises a cathode shell, an insulating spacer, a current collector, a micro-channel carbon felt electrode, a diaphragm, an oxygen evolution electrode, an anode channel and an anode shell, a micro-channel network through which a cathode solution flows is arranged in the micro-channel carbon felt electrode; the oxygen evolution electrode and the carbon felt channel electrode are arranged in parallel and are separated by a diaphragm; the current collector clings to the outer surface of the micro-channel carbon felt electrode; the insulating spacer clings to the outer surface of the current collector; the cathode shell clings to the outer surface of the insulating spacer; an anode channel is arranged between the oxygen evolution electrode and the anode shell, and an anode solution channel is arranged in the anode channel; and heat exchange pipelines are arranged in the cathode shell and the anode shell. The invention further provides an indigo electrochemical reduction reaction method based on the reactor. According to the invention, direct electro-reduction of indigo can be realized in the presence of a chemical reducing agent.

The invention discloses a flexible multi-channel multi-layer electrode, a preparation method and an electromyographic signal collector. The preparation method of the flexible multi-channel multi-layer electrode comprises the following steps: etching a silicon wafer, and cleaning the silicon wafer; preparing an AgNW / NG solution as a conductive material, and preparing an elastic substrate by adopting SEBS powder; a signal acquisition layer is prepared from a silicon wafer, a conductive material and SEBS powder, a wire shielding layer is prepared from the silicon wafer and the SEBS powder, and a packaging layer and an interference signal shielding layer are prepared from the silicon wafer, the conductive material and the SEBS powder; the packaging layer, the interference signal shielding layer, the signal acquisition layer and the wire shielding layer are fixedly assembled in sequence from top to bottom, and are connected with the flexible printed circuit board through the signal acquisition layer. The invention aims to solve the problems of high electrode impedance value, low signal-to-noise ratio and poor stretchability of a multi-channel electrode.

A tone evaluation rehabilitation training device and system, the device comprises a flexible cap body and a bandage, the cap body is integrated with a 10-channel electrode plate to accurately cover language brain areas on both sides, electroencephalogram signals are transmitted in real time through Bluetooth 5.0, and a noise reduction earphone is used for providing sound output for a patient. The microphone is used for collecting audio of a patient and transmitting the audio to the processing module for analysis, the system dynamically regulates acoustic stimulation based on the neural activation feedback module, high-precision tone recognition is achieved in combination with audio preprocessing, SpecAugment data enhancement, a CNN-Transform mixed model and an attention mechanism, and training efficiency is optimized through pre-training model fine tuning and Warmup learning rate scheduling. An initial consonant-vowel-tone three-dimensional confusion probability table is introduced to divide interference intensity grades, high and low interference task paths are dynamically switched through a semantic error rate, and an evaluation module generates a four-tone accuracy rate, an F0 curve comparison graph and a personalized rehabilitation scheme. The recognition precision is improved, the training period of special crowds is shortened, and full-period self-adaptive rehabilitation is provided for preschool children to speech disorder patients.

The invention belongs to the technical field of biological electrodes, and particularly relates to a flexible multi-channel implantable biological electrode, an implanting device and a method, and the biological electrode is formed by fixing at least two single-channel electrodes into a bundle in a spiral winding or parallel fixing mode; adjacent single-channel electrodes abut against and are fixed and insulated from each other, the single-channel electrodes are respectively provided with exposure sites used for collecting electroneurographic signals and / or electromyographic signals or used for nerve electrical stimulation and / or electromyographic stimulation at the implantation sections, and the single-channel electrodes have determined relative positions and jointly form multiple channels; and the exposed sites are arranged at the end part and / or the side surface of the implantation section of the single-channel electrode. Compared with the prior art, the problem that each single-channel electrode in a'multi-channel 'biological electrode in the prior art does not have certain relevance is solved. According to the scheme, all the single-channel electrodes forming the flexible multi-channel biological electrode have a clear relative position relation, and electrode exposure point positions can be arranged at designated positions according to needs.

Generally described, one or more aspects of the present disclosure relate to methods, systems, and devices related to pre-straining bare lanes of a multilane electrode with a system for calendering a multilane electrode including a pre-strain roll device including a plurality of pre-strain rollers and a pressure roller forming a pre-strain nib and a calender roll device comprising a pair of calendering rollers forming a calendering nip positioned downstream from the pre-strain roll device.

The invention provides an information processing method and system based on a brain-computer interface, and belongs to the technical field of information processing.The method comprises the steps that brain wave signals of a user are collected through a multi-channel electrode; based on STFT, DWT and SVM models, feature extraction and pattern recognition are carried out on the brain wave signals, and control instructions corresponding to the brain wave signals are generated; and controlling the rehabilitation training equipment based on the control instruction to obtain control feedback corresponding to the brain wave signal. According to the information processing method and system based on the brain-computer interface, the signal discrimination robustness can be effectively improved, and the stability and generalizability of the system under individual differences of different patients and environmental interference are guaranteed.

The invention discloses a multi-parameter dynamic coding method for tactile feedback. The method comprises the following steps: arranging a multi-channel electrode array in a tactile sensing area, and establishing a corresponding relation between each channel of a multi-channel array electrode and a spatial position in the tactile sensing area through spatial coding; calibrating the minimum value and the maximum value of various types of electrode stimulation parameters reflecting the touch perception degree to obtain a dual-threshold calibration result; performing intensity coding according to the double-threshold calibration result; constructing a type code, wherein the type code reflects a corresponding relation between the frequency interval and the touch induction type; and generating a parameter dynamic mapping model based on the intensity code and the type code, wherein the parameter dynamic mapping model reflects a corresponding relation between an interaction characteristic between the touch sensing area and a target and an electrode stimulation parameter combination sensed by the touch sensing area. The method can be widely applied to man-machine interaction scenes needing tactile feedback.

The invention relates to the technical field of flexible electrodes, in particular to a fibrous flexible stretchable multi-channel electrode and a preparation method thereof, and the electrode comprises a plurality of laminated composite film layers and a packaging layer; each composite film layer comprises a stretchable polymer layer and a stretchable conductive layer; the width of the conductive layer is smaller than that of the polymer layer, and the conductive layer in the same composite film layer is completely covered and wrapped by the polymer layer in the length direction; the lengths of the polymer layers in different composite film layers are sequentially reduced from bottom to top; the length of the polymer layer in the adjacent upper composite film layer is smaller than that of the conductive layer in the lower composite film layer so as to realize exposure of an electrode detection point, and the length of each polymer layer in the adjacent composite film layers is greater than or equal to that of the conductive layer above each polymer layer. According to the fibrous flexible stretchable multi-channel electrode, the problems that a traditional multi-channel electrode is large in size, low in channel number and not stretchable are solved.

The invention relates to the technical field of physical disorder assessment, and discloses a method and a system for monitoring and assessing the swallowing function of a stroke patient, and the method comprises the steps: collecting the electromyographic signals of the sEMG of the sEMG of the stroke patient through arranging a multi-channel sEMG electrode; and based on the acquired multi-channel electromyographic signals, performing analysis processing through Fourier transform and a machine learning algorithm combining independent component analysis and wavelet transform to obtain an analysis result of deep muscle electrical activity and an independent activity result of different muscle groups, and based on the result, evaluating the swallowing function of the stroke patient. Therefore, the functional conditions of specific muscles and deep muscles are mastered, the accuracy of screening and evaluating dysphagia of a stroke patient is improved, and effective support is provided for subsequent clinical diagnosis.

The application discloses a preparation method of a flexible active myoelectric electrode array structure and relates to the field of flexible electronics and active electrode preparation; the structure comprises: a plurality of active electrodes; the plurality of active electrodes are arranged in a horizontal-longitudinal matrix mode; each active electrode comprises: a flexible substrate and an active flexible amplification electrode arranged on the flexible substrate; the active flexible amplification electrode comprises an electrode and a common-source amplification circuit; the electrode and the common-source amplification circuit are in one-to-one correspondence; the electrode and the common-source amplification circuit are connected; the structure realizes synchronous collection of surface myoelectric signals by multiple channels, the flexible substrate enhances the wearability of the electrode, the differential structure, that is, the common-source amplification circuit can improve the interference of common-mode signals, reduce the introduction of noise, improve the signal-to-noise ratio of myoelectric signals, and reduce signal crosstalk between different channels.

The disclosure describes a system for performing electrophoresis in microplate formats. The electrophoresis microplate, also provided as electrophoresis strips, comprises independent electrophoresis cells arranged in a rectangular grid. Each cell comprises separation channels, electrodes, and reagents sealed within covers.. Each electrophoresis cell operates autonomously, enabling parallel analytical, preparative, and affinity electrophoresis on various sample types. The disclosure facilitates efficient automation-compatible electrophoretic separation and purification across a broad range of sample types.

The invention discloses a cell sensor based on a four-channel electrode device and application of the cell sensor in pathogenic bacterium detection, and belongs to the technical field of analysis and detection. The cell sensor is formed by combining HEK 293 / hNAIP-NLRC4 cells serving as a recognition element and a ready-to-use cell culture paper chip serving as a carrier with a four-channel electrode device with a cell culture pool. The sensor constructed by taking HEK 293 / hNAIP-NLRC4 cells as a recognition element is high in sensitivity, can distinguish escherichia coli pathogenic bacteria with T3SS from escherichia coli non-pathogenic bacteria without T3SS, specifically perceives various pathogenic bacteria with T3SS, specifically recognizes non-targeted food-borne pathogenic bacteria, and provides a new thought for risk detection and research of unknown bacteria in food.

This invention discloses a flexible multichannel multilayer electrode, its fabrication method, and an electromyography (EMG) signal acquisition device. The fabrication method of the flexible multichannel multilayer electrode includes the following steps: etching and cleaning a silicon wafer; preparing an AgNW / NG solution as a conductive material and using SEBS powder to prepare an elastic substrate; fabricating a signal acquisition layer using the silicon wafer, conductive material, and SEBS powder; fabricating a wire shielding layer using the silicon wafer and SEBS powder; and fabricating an encapsulation layer and an interference signal shielding layer using the silicon wafer, conductive material, and SEBS powder; assembling the encapsulation layer, interference signal shielding layer, signal acquisition layer, and wire shielding layer sequentially from top to bottom, and connecting the signal acquisition layer to a flexible printed circuit board. This invention aims to solve the problems of high electrode impedance, low signal-to-noise ratio, and poor tensile strength of multichannel electrodes.

The present application relates to the technical field of environmental monitoring of oil pollution area, and particularly relates to a multi-channel parallel acquisition interwell three-dimensional resistivity monitoring system and method for oil storage area. The power supply, the host, the multi-channel parallel acquisition device and the four-pole AM-BN acquisition device are sequentially connected. The multi-channel parallel acquisition device comprises a multi-channel electrode conversion box, a plurality of potential channel sockets are arranged in the multi-channel electrode conversion box, the number of the potential channel sockets is the same as the number of probes, twenty-four potential channels are arranged in each potential channel socket, a relay and a current channel switch are arranged in each channel, one end of the relay is connected with a corresponding electrode on the resistivity probe, and the other end of the relay is connected with an acquisition module. The system has high acquisition efficiency, can better realize real-time monitoring of leakage, has high monitoring precision, can accurately identify small leakage in the oil storage area, and realizes remote in-situ monitoring of oil pollution area leakage.

A semiconductor device according to an embodiment of the present disclosure includes a substrate, a gate electrode layer disposed over the substrate, a gate dielectric layer disposed on the gate electrode layer, a channel electrode layer disposed on the gate dielectric layer, a threshold switching layer disposed on the channel electrode layer, and a source electrode layer and a drain electrode layer that are disposed on the threshold switching layer to be spaced apart from each other.

A method of manufacturing and using a nanofluidic NAND transistor sensor array scheme including a plurality of nanopore channel pillars, a plurality of respective fluidic channels, a plurality of gate electrodes, a top chamber, and a bottom chamber includes placing a sensor substrate in an electrolyte solution comprising biomolecules and DNA. The method also includes placing first and second electrodes in the electrolyte solution (Vpp and Vss of the nanofluidic NAND transistor); forming the nanopore channel pillars; placing the gate electrodes and gate insulators in respective walls of the nanopore channel pillars; applying an electrophoretic bias in the first and second electrodes; applying a bias in the gate electrodes; detecting a change in an electrode current in the electrolyte solution caused by a change in a gate voltage; and detecting a change in a surface charge in nanopore channel electrodes in the respective fluidic channels.

The invention relates to an electroencephalogram signal preprocessing method and a related device thereof.The method comprises the steps that initial electroencephalogram signals collected by a multi-channel electrode array and at least one kind of auxiliary data collected synchronously with the initial electroencephalogram signals are obtained, and the auxiliary data comprise electrode impedance values and / or physiological state data; wherein the resistance reactance value indicates an electrode impedance value corresponding to the acquisition channel associated with the initial electroencephalogram signal, and the physiological data at least comprises motion posture data and / or physiological index data; performing multiple filtering processing on the initial electroencephalogram signal to obtain a filtered electroencephalogram signal; inputting the filtered electroencephalogram signals and at least one kind of auxiliary data into a signal restoration model, and optimizing the candidate electroencephalogram signals to obtain optimized target electroencephalogram signals. According to the scheme, the electroencephalogram signals can be preprocessed by dynamically adjusting the filtering parameters and utilizing the impedance value and the auxiliary data, and the quality of the electroencephalogram signals is improved.

The invention discloses a maternal and fetal electrocardio extraction method based on multi-task learning. The method comprises the steps that 1, a multi-channel electrode is used for collecting mixed electrocardio signals on the surface of the abdomen of a pregnant woman and preprocessing the mixed electrocardio signals; 2, extracting label signals required by training, and making a data set; 3, constructing a multi-task learning maternal and fetal electrocardiogram extraction network, and training a model by using a training data set in a data set; and 4, performing electrocardiogram extraction on the pregnant woman abdomen surface electrocardiogram signals by utilizing the trained model, and outputting maternal and fetal electrocardiogram waveforms and heart beat sequences thereof. The extraction precision of the maternal and fetal electrocardiosignals can be improved, and the electrocardiosignal waveform signal and the heart beat sequence thereof can be obtained at the same time.

Proposed is a radio frequency treatment handpiece including a handpiece housing having a first containing space therein and a circuit board installed in the first containing space to operate the handpiece, and having a frontside thereof being open, an electrode tip having a nozzle portion that is detachably coupled to the handpiece housing and provided with an RF electrode for generating radio frequency waves, an electrode assembly installed in the first containing space, provided with a valve supply channel that receives a gaseous refrigerant from a second containing space and a main body, and includes a power distributer for applying electric power to the electrode tip and a solenoid valve configured to communicate with the valve supply channel and to control flow of the gaseous refrigerant, and an actuator coupled to the electrode assembly to vibrate the electrode assembly according to a control signal.

The present invention relates to a blood analysis device including: a membrane configured to separate plasma from blood, a channel into which the plasma separated by the membrane is introduced, an electrode part including electrodes configured to adjoin one surface of the channel and come into contact with the plasma flowing in the channel, and a channel cover configured to adjoin a surface opposite to one surface of the channel which is adjoined by the electrode part, in which when any one of the electrode part and the channel cover adjoins the membrane, a part of the membrane covers an upper portion of the electrode part or the channel cover.

The invention discloses a controlled-release PRP pelvic floor muscle repair system for a multi-channel electrode. The system comprises a plurality of controlled-release systems and a porous silica gel protective sleeve arranged on the outer sides of the controlled-release systems in a sleeving mode. The plurality of controlled release systems comprise a plurality of electrode probes and PRP controlled release functional layers which are respectively sleeved on the outer sides of the electrode probes and are matched with the electrode probes in shape; the PRP controlled-release functional layer comprises a porous matrix and a PRP adsorption layer coated on the porous matrix; the porous matrix comprises an anti-percolation membrane layer and a micron-scale or nano-scale fiber network carrier, and the micron-scale or nano-scale fiber network carrier is coated with the PRP adsorption layer; and the micron-scale or nano-scale fiber network carrier is subjected to alkali liquor treatment before the PRP adsorption layer is coated. According to the repair system, by designing a special carrier structure and a surface treatment process, efficient adsorption of PRP is achieved, mutual cooperation with electrical stimulation is achieved, precise aggregation of PRP and electrical stimulation trigger type controllable release are achieved, and the key problem of electrical stimulation and PRP collaborative treatment in the prior art is solved.

A multiple gate system for realizing the quantum anomalous Hall effect, including a top channel electrode which controls carrier density and electric field in a conduction channel, a first dielectric layer for the top channel gate, a patterned contact gate electrode which controls earner density on the contact and screens the top channel electrode's electric field on the contact, and a second dielectric layer for the contact gate, an electrically tunable material comprising semiconducting molybdenum ditelluride in the form of a first atomic sheet and a second atomic sheet, wherein first atomic sheet is rotated planarly from the second atomic sheet by about 2.5 to about 5 degrees, to form a geometrically stacked homobilayer moiré superlattice configured to host ferromagnetic states that spontaneously break time-reversal symmetry, where a perpendicular electric field is applied to the electrically tunable material, tuning the quantum anomalous Hall effect.

Provided is a flow electroporation device, including a bracket and an electrode device, wherein the electrode device is planar electrode, and the bracket and the planar electrodes jointly restrict the channel for fluid flow; the material of the electrode device is one or several of following materials: titanium-plated platinum, platinum, rhodium-plated molybdenum, rhodium-plated ruthenium, iridium-plated niobium and platinum-plated iridium; the making process of the flow electroporation device is simple and the product can be manufactured in a standardized process. Compared to other similar devices, the single batch processing volume of cell suspension is larger, the transfection efficiency and the cell viability are higher, the stability is better, and the device is easy to operate.

The utility model discloses a portable sleep signal acquisition device based on multichannel electroencephalogram, and belongs to the technical field of sleep signal acquisition. The device comprises a host and an electrode plate, the electrode plate adopts flexible metal electrodes arranged on an FPC (Flexible Printed Circuit) board, and the flexible metal electrodes comprise channel electrodes FP1, FPz, FP2, AF7, AF3, AFz, AF4 and AF8. The host comprises a filtering module, a signal acquisition module, a microcontroller module, a wireless transmission module and a power supply module. The device collects signals of eight channels, and provides more comprehensive bio-electricity signals for follow-up sleep monitoring of an upper computer. The flexible metal electrode structurally comprises the substrate layer, the conductive coating and the protective layer in sequence from bottom to top, is easy to wear and light in weight, and reduces the influence of equipment on a user; a user can independently complete wearing of the equipment without assistance of additional medical staff. According to the utility model, the development of sleep medicine can be greatly promoted, more potential sleep disorder patients can be diagnosed and treated as soon as possible, and the health level of Chinese citizens is improved.

A multiple gate system for realizing the quantum anomalous Hall effect, including a top channel electrode which controls carrier density and electric field in a conduction channel, a first dielectric layer for the top channel gate, a patterned contact gate electrode which controls earner density on the contact and screens the top channel electrode's electric field on the contact, and a second dielectric layer for the contact gate, an electrically tunable material comprising semiconducting molybdenum ditelluride in the form of a first atomic sheet and a second atomic sheet, wherein first atomic sheet is rotated planarly from the second atomic sheet by about 2.5 to about 5 degrees, to form a geometrically stacked homobilayer moiré superlattice configured to host ferromagnetic states that spontaneously break time-reversal symmetry, where a perpendicular electric field is applied to the electrically tunable material, tuning the quantum anomalous Hall effect.

The present invention relates to the technical field of liquid flow battery manufacturing equipment, and specifically to a transport and stacking system and method for transporting and stacking electrode plates with flow channels. The transport and stacking system for electrode plates with flow channels includes: a servo system; an adsorption tooling includes a suction cup frame, the suction cup frame is connected to the servo system, and a suction cup is installed on the suction cup frame; a working surface is provided at the bottom of the suction cup, and the working surface is provided with a plurality of negative pressure adsorption ports for adsorbing the electrode plate; a gas compensation system includes a plurality of compensation nozzles, the compensation nozzles are provided on the adsorption tooling, and the plurality of compensation nozzles are provided circumferentially around the working surface of the suction cup; a stacking table, the stacking table is provided with at least one guide blocking rod, the guide blocking rod is vertically provided and can be raised and lowered, and the guide blocking rod is directly opposite to the through-holes of the stacked electrode plates on the stacking station. Through the above arrangement, the pressure below the electrode plate can be compensated without changing the servo system and the release height of the electrode plate, thereby slowing down the falling speed of the electrode plate and protecting the electrode plate.

The present application relates to the technical field of fracture monitoring, and is a pulse fracturing active fracture monitoring method based on seismic-electric coupling, which comprises using a fracturing nipple excitation source as an active elastic wave source, receiving the electric signal generated by seismic-electric coupling by using a multi-channel electrode array arranged, adopting time-frequency analysis and fracture inversion based on a frequency domain template to realize inversion and visualized output of the existence, spatial position, trend and scale of the fracture. The present application excites a pulse by using a fracturing nipple, generates an elastic wave signal, emits an excitation current, enhances the intensity of the seismic-electric effect electric signal, analyzes the change of the electric field around the fracturing nipple, and thus realizes real-time active monitoring of the development and distribution of fracturing cracks and improves the accuracy and real-time performance of crack detection.

A sole structure can include a chamber and a delivery channel containing an electrorheological fluid. Electrodes can be positioned to generate an electric field in at least a portion of the electrorheological fluid in the delivery channel in response to a voltage between the electrodes. The sole structure can further include a controller that includes a processor and a memory. At least one of the processor and the memory can store instructions executable by the processor to perform operations, the operations including maintaining the voltage between the electrodes at one or more flow-inhibiting levels at which the flow of the electrorheological fluid through the delivery channel is blocked, and the operations further including maintaining the voltage between the electrodes at one or more flow-initiation levels that permit the electrorheological fluid to flow through the delivery channel.