113 results about "Ion current" patented technology

The invention relates to the technical field of biology, in particular to a signal noise reduction processing method and system, and the method comprises the steps: collecting an original ion current signal, and constructing an original ion current signal segment and a training set associated with a pure ion current signal segment corresponding to the original ion current signal segment; constructing a noise reduction neural network model, and defining a loss function for the noise reduction neural network model; training trainable parameters of the noise reduction neural network model through the training set and the loss function so as to complete training of the noise reduction neural network; inputting all to-be-detected original ion current signal segments of to-be-detected original ion current signals into the trained noise reduction neural network model, and outputting corresponding to-be-detected noise reduction ion current signal segments; and splicing all the to-be-detected noise reduction ion current signal segments to obtain a complete to-be-detected noise reduction ion current signal. According to the invention, the noise in the original ion current signal can be effectively removed, and the distortion of the ion current signal is avoided, so that the recognition effect of the basic group is ensured.

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

The invention provides a glass nanopore probe based on an aptamer and application of the glass nanopore probe in dopamine detection, and belongs to the technical field of electrochemical sensing and scanning probe microscopy. The sensor comprises: a glass nanopore probe, the inner wall of which is modified with a gold layer; a cDNA (complementary deoxyribonucleic acid) single chain is fixed on the gold layer through a gold-sulfur bond; a part of the sequence of the dopamine aptamer is hybridized and combined with the cDNA single chain; wherein the combination of the dopamine and the dopamine aptamer causes the change of an ion current rectification signal of the glass nanopore probe, so that the detection of the dopamine is realized based on the change of the ion current rectification signal of the glass nanopore probe. The invention provides a valuable scheme for developing an aptamer nanopore scanning electrochemical sensor for single cell analysis and researching neurotransmitter-related diseases.

Embodiments of this disclosure generally relate to systems used in semiconductor device manufacturing processes. [Solution] Embodiments provided herein generally include apparatus and methods for synchronizing and controlling the supply of RF bias voltage signals and pulsed voltage waveforms to one or more electrodes inside a plasma processing chamber. Embodiments of the Disclosure include methods and apparatus for synchronizing a pulsed radio frequency (RF) waveform with a pulsed voltage (PV) waveform so that the pulsed RF waveform is turned on during a first stage of the PV waveform and turned off during a second stage. The first stage of the PV waveform includes a sheath collapse stage. The second stage of the PV waveform includes an ion current stage.

The invention relates to means and methods for analysis of target analytes using nanopore-based sensors, more in particular to methods, nanopore systems and devices for single-molecule profiling of polymers, e.g. polypeptide or polysaccharides. Provided is a method for translocating a non-nucleic acid based polymer analyte through a nanopore, the nanopore being comprised in a membrane separating a fluidic chamber of a nanopore system into a cis side and a trans side, comprising adding the analyte to the cis side of and allowing for translocation, wherein the nanopore system has a cis to trans electro-osmotic force (EOF) resulting from a net ionic current flow cis to trans, preferably wherein the cis to trans EOF results from a net ionic current flow cis to trans over total ionic current flow of greater than 0.2 or less than −0.2.

The invention belongs to the technical field of beauty equipment, and particularly relates to a beauty light zirconium ion excitation device which comprises a device shell, the head of the device shell is provided with an ion excitation head, the ion excitation head comprises an insulating base and an excitation electrode group fixed on the insulating base, and the excitation electrode group is formed by arranging a plurality of microelectrodes in an array form; the device shell is internally provided with an ion excitation circuit, the ion excitation circuit comprises a high-voltage generation module and an electrode driving module, the high-voltage generation module is electrically connected with the electrode driving module, and the electrode driving module is respectively connected with each microelectrode in the excitation electrode group through a wire. According to the invention, the electrode group formed by arranging a plurality of independent microelectrodes in a specific array is arranged on the ion excitation head, the electrode driving module is respectively connected with the microelectrodes, and the array formed by the plurality of microelectrodes can physically form an ion excitation source with wider coverage and more dense distribution; and the generated ion current is milder and more stable.

A misfire detection system (300) is disclosed, comprising an ignition system (303) including an ignition coil (107), an ion current measuring circuit (302) electrically connected to the ignition coil (107) for measuring an ion current generated by a spark plug (106), and a signal processor (401) for processing and conditioning the ion current measured by the ion current measuring circuit (302) to determine the occurrence of a misfire in the IC engine. The ignition coil (107) comprises a primary winding (101) and a secondary winding (103), wherein a first end (101B) of the primary winding (101) is electrically connected to a first end (103B) of the secondary winding (103). Misfire detection improves the reliability and durability of the IC engine.

This invention relates to a safety protection method and circuit for preventing electron backflow in an ion electric thruster, applicable to spacecraft ion electric propulsion systems. The ion electric thruster's grid gate is connected to the positive output terminal of the grid power module, the acceleration grid gate is connected to the negative output terminal of the acceleration power module, and the common ground is connected to the common power ground of both the grid power module and the acceleration power module. The safety protection method involves detecting the output current of the acceleration power module to determine if an overcurrent has occurred. If an overcurrent has occurred, a synchronous shutdown signal is generated and transmitted to the PWM controllers of 1 to N grid power modules and acceleration power modules. Upon receiving the synchronous shutdown signal, the PWM controllers of the 1 to N grid power modules and acceleration power modules synchronously shut down their voltage output terminals, thereby achieving synchronous 0V voltage signal output from the positive high-voltage output terminals of the 1 to N grid power modules and the negative high-voltage output terminal of the acceleration power module, preventing electron backflow caused by any grid module failing to shut down its high-voltage output.

This invention relates to a high-efficiency ion current acquisition structure and a mass spectrometer. The ion current acquisition structure includes: a collection chamber adapted to be installed between the ion source and the sampling cone of the mass spectrometer; a trumpet-shaped aperture disposed within the collection chamber at the end facing the ion source; an annular electrode disposed on the inner wall of the trumpet-shaped aperture; and a beam rod assembly comprising multiple rod-shaped electrodes uniformly arranged circumferentially along the outlet of the trumpet-shaped aperture, with adjacent rod-shaped electrodes spaced apart to form gaps; wherein, on the side away from the ion source, the ends of the multiple rod-shaped electrodes are all bent and converged towards the central axis of the collection chamber. This invention provides a high-efficiency ion current acquisition structure that can improve the technical problems of low ion acquisition efficiency before entering the vacuum system and high background noise caused by the inability to effectively filter neutral particles in the prior art.

This invention relates to the field of microscopy application technology, and in particular to a SICM scanning control method and related device based on feedback quantization. The method acquires the test height, initial scanning speed, initial safe height of the test point, first speed adjustment start point, and second speed adjustment start point of the test point. It controls the scanning probe to descend from the initial safe height of the test point to the first speed adjustment start point at the initial scanning speed, intervenes with first dynamic speed adjustment, continues to descend to the second speed adjustment start point, intervenes with second dynamic speed adjustment, and continues descending until the probe detects a sudden change in ion current and stops descending. This control method solves the problems of low scanning time resolution and poor safety in existing scanning ion conductivity microscopes by setting an initial speed adjustment point that dynamically adjusts the speed according to the probe's descent position.

The invention discloses a laser ion source system based on double pulses and AI feedback control and a control method, and relates to the technical field of plasmas, and the system is characterized in that a first laser generates pre-ablation laser, and generates pre-plasma on a target material; the second laser generates main ionization laser which irradiates the pre-plasma to generate main plasma; and the intelligent control unit extracts spatial features from the plume image, fuses the spatial features, the spectral data, the real-time ion current intensity and the equipment parameters to obtain high-order state features, and generates laser pulse optimization parameters according to the high-order state features and the equipment parameters. According to the invention, a double-pulse mechanism is adopted to enable main ionization to occur in the expanded plasma, charge exchange and energy dispersion are reduced, the energy divergence of the ion beam is remarkably reduced, the energy conversion efficiency is improved, AI real-time feedback control can compensate factors such as target pitting corrosion and laser power fluctuation, and very high inter-pulse stability is realized.

The invention relates to the technical field of plasma detection, in particular to a dual-channel ion energy probe based on a magnetic deflection effect. The invention provides a dual-channel ion energy probe based on a magnetic deflection effect. The dual-channel ion energy probe comprises an upper permanent magnet plate, a lower permanent magnet plate, a dual-channel collimator and a dual-channel probe, the dual-channel collimator penetrates into the shell and comprises a scanning channel and a reference channel, the scanning channel and the reference channel are connected with voltages of different values, the dual-channel collimator is used for enabling ions to enter the shell along the channel direction, and the upper permanent magnet plate and the lower permanent magnet plate are respectively fixed at the upper end and the lower end of the shell to form a uniform magnetic field. The dual-channel probe is arranged in the shell and comprises a scanning collection probe coplanar with the scanning channel and a reference collection probe coplanar with the reference channel, and the scanning collection probe and the reference collection probe are connected with voltages of different values respectively. According to the scheme, the ion current probe with a high signal-to-noise ratio can be provided.

The utility model provides an ion current skin repair instrument control system, which comprises a central control module electrically connected with a display module, and is characterized in that the central control module is electrically connected with an ion emitter, the ion emitter is electrically connected with a beauty control handle, the central control module comprises a controller, and the controller is electrically connected with a battery. A timing module, a charging module and an adjusting module are further installed on the central control module, and the controller is electrically connected with the timing module, the charging module and the adjusting module; the timing module is used for measuring a time interval in a beauty operation process; the charging module is used for managing and recording beauty fees; and the adjusting module is used for adjusting the working parameters of the ion emitter according to different beauty treatment requirements. According to the utility model, the beauty treatment accuracy and individuation are improved, and the beauty treatment effect is improved.

This invention belongs to the field of plasma flow control technology for aircraft, specifically relating to an air-breathing plasma jet generator suitable for active flow control of aircraft. It is installed within an internal cavity of the aircraft, connected to an air intake and a nozzle. The air-breathing plasma jet generator generates orthogonal electric and magnetic fields. The electric field includes components in the direction of airflow and perpendicular to airflow. The magnetic field is used to confine electrons to gyroscopic motion and to ionize them through collisions with gas molecules. Furthermore, the magnetic field causes the ion current perpendicular to the airflow direction to generate an Ampere force in the direction of airflow under the influence of the magnetic field. This invention effectively solves the problem of exciter failure during high-speed flight by embedding the exciter entirely inside the aircraft and combining an innovative design of integrated excitation using magnetic fields, thermal energy, and acoustic waves, significantly improving the speed applicability range of plasma flow control technology.

This invention discloses a quantitative analysis system and method for overlapping gas components, belonging to the field of gas analysis and vacuum diagnostics technology. The system comprises: a vacuum chamber to be tested, a first valve connection, and a differential device connected in sequence; the differential device is connected to a mass spectrometry detection unit, a spectral detection unit, and a vacuum pump unit; the mass spectrometry detection unit is used to acquire ion current signals of the analyte gas in multiple mass-to-charge ratio channels; the spectral detection unit is used to acquire characteristic spectral signals of the analyte gas in multiple wavelength channels; a data processing and calculation unit is communicatively connected to the mass spectrometry detection unit and the spectral detection unit, respectively, to obtain and output the partial pressure or concentration of each candidate gas component. Overlapping gas components are those gas components that are difficult to accurately distinguish in mass spectrometry detection due to overlapping mass-to-charge ratio channel responses or overlapping or intersecting characteristic spectral lines in spectral detection. This invention improves the identification capability and quantitative accuracy of overlapping components.

Mathematical parameters can be obtained to analyze the state of ion channels. [Solution] The ion current data generation device 7 includes a data generation unit 80 that generates first data 41 indicating the ion current I based on mathematical parameters 71 set as data indicating the ion current I flowing through the ion channel 10 and the frequency characteristics of a detection unit 20 that measures the ion current I.

The invention discloses a reversible dynamic aperture solid nanopore array based on a temperature-sensitive phase change layer and a preparation method and application of the reversible dynamic aperture solid nanopore array, and belongs to the technical field of single molecule detection and nanostructure regulation, the array introduces the temperature-sensitive phase change layer into the inner wall of a solid nanopore, and when the local temperature crosses the phase transition point of the temperature-sensitive phase change layer, reversible volume change is generated; therefore, the effective aperture of the nanopore is continuously adjustable in a sub-nanometer scale range. An independent micro heating unit and an independent temperature sensing unit are integrated below each nanopore in the array, and single-pore-level accurate temperature control adjustment is achieved in a row-column addressing mode. In combination with ionic current monitoring and an external control module, the aperture can be set in real time according to the size requirements of different target molecules, and dynamic aperture regulation and control with a programmable structure, quick response and good repeatability are realized. The array structure provided by the invention is suitable for single molecule level detection of objects such as multiple types of small molecule pollutants, tumor-related biomarkers, biomacromolecules and the like, and has the advantages of high sensitivity, high flux and wide applicability.

The invention discloses a double-pulse confinement ion current energy screening device and method, and relates to the field of ion beam control, the device comprises a plasma source, a deflection magnetic field, a parallel plate electrode, an ion beam control electrode, a capillary tube beam and a deposition target disc; the plasma source is used for providing plasma; the deflecting magnetic field is used for longitudinally scanning and homogenizing the plasma according to a vertical electric field to obtain an ion beam; the parallel plate electrode is used for providing an electric field orthogonal to the vertical electric field and controlling focusing and deflection of the ion beam through the voltage of the parallel plate electrode to obtain a deflected ion beam; the ion beam control electrode is used for adjusting the energy of the deflected ion beam to obtain a single-energy ion beam; the capillary tube beam is used for leading out single ions in the single-energy ion beam; the deposition target disc is used for receiving single ions in the single-energy ion beam; according to the invention, single-energy single-ion extraction can be realized, and the stability and precision of a single-ion beam can be ensured.

The present application relates to the technical field of water heater control, and discloses a gas water heater control method and device and a gas water heater, the method comprising: obtaining a current gas proportional valve section of the gas water heater; determining a corresponding target load current mapping based on the current gas proportional valve section, wherein the target load current mapping is used to represent the corresponding relationship between the load and the corresponding standard ion current value under the current gas proportional valve section state; obtaining the current load and the current flame ion current value of the gas water heater in real time; determining the standard ion current interval corresponding to the current load based on the current load and the target load current mapping; and controlling the gas water heater based on the current flame ion current value and the standard ion current interval. Thus, based on the current gas proportional valve section and the current load, the standard flame ion current interval corresponding to the current load is determined, so that the gas water heater is controlled more accurately based on the standard ion current interval.

Disclosed are a negative electrode and a rechargeable lithium battery including the same. The negative electrode may include a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector, in which the negative electrode active material layer includes a negative electrode active material and an additive, and the additive includes a compound that condenses at a pH of 5.5 or less and / or 90 DEG C or more. If (e.g., when) a decrease in pH and / or an increase in temperature due to an abnormal reaction (e.g., an undesired side reaction) of the rechargeable lithium battery, the negative electrode may form or provide a membrane to block ion current (or ion flow) and direct shutdown of the rechargeable lithium battery, such as lithium ion batteries. Thus, the stability (e.g., chemical stability and / or physical stability) and reliability of the rechargeable lithium battery are improved or enhanced.

Methods and apparatus for electroplating metal onto a substrate are provided herein. For example, such an electrodeposition apparatus may include: (a) a plating chamber configured to contain an electrolyte and an anode while plating a metal onto a substrate; (b) a substrate holder configured to hold the substrate and maintain a separation between a plating surface of the substrate and the anode during electroplating; and (c) an ionically resistive ionically permeable element comprising a substrate facing surface and an opposing surface wherein the ionically resistive ionically permeable element allows a flow of an ionic current through the ionically resistive ionically permeable element toward the substrate during electroplating, and wherein the ionically resistive ionically permeable element and the substrate holder are configured to cooperate with each other and rotate together relative to the plating chamber.

The invention discloses an ion mobility spectrum measurement method based on an I-U characteristic curve of a single-section Gedes tube, and the method comprises the steps: building a measurement platform, and enabling to-be-measured ions to pass through the single-section Gedes tube under the driving of laminar airflow with the flow velocity of u0; changing a bias voltage U applied to the single-section type Gedes tube, and measuring a corresponding corona ion current I to obtain an I-U characteristic curve of the single-section type Gedes tube; on the basis of the curve slope of the I-U characteristic curve, calculating ion densities corresponding to ions with different migration rates; and generating an ion mobility spectrum according to all the ions with different mobility and the corresponding ion densities, and calculating the average ion mobility based on the ion mobility spectrum.

The invention relates to the technical field of gene detection devices, in particular to a silicon nitride nanopore device and a preparation method and application thereof based on an angstrom hole, a helium ion beam is used for irradiating the surface of a silicon nitride film of a cleaned silicon nitride chip to obtain a silicon nitride chip with an angstrom hole, and the silicon nitride chip is used for detecting the gene detection device. And after cleaning and drying, carrying out dielectric breakdown to obtain a nanopore with a required size, measuring the obtained nanopore again by using the patch clamp, and drying by using nitrogen to obtain the silicon nitride nanopore device. According to the silicon nitride nanopore device and the preparation method and application thereof based on the angstrom pore, the generation position of the nanopore is controlled in a helium ion beam irradiation area through an angstrom pore confinement intrinsic carrier effect and an avalanche effect and breakdown critical defect density correlation mechanism; and then the formation, evolution and size regulation and control of the nanopore are tracked in real time through dielectric breakdown ion current, and controllable manufacturing of the nanopore with the extremely small size is achieved.

The present invention addresses the problem of providing: a method for producing a device using a new principle; a device; and a method for measuring ion current using a device.　This problem can be solved by a device comprising: a substrate having a first face and a second face; a first through hole that passes through the substrate from the first face towards the second face; and a deposit of a metal compound which is at least one type selected from the group consisting of a divalent metal hydroxide, a trivalent metal hydroxide, a divalent metal phosphate and a trivalent metal phosphate and which is formed on a wall surface of the first through hole.

This invention provides a method, system, electronic device, and storage medium for analyzing the energy consumption of neural networks based on ion channel regulation. It constructs a neural network dynamics model containing excitatory and inhibitory neurons. The neuronal membrane potential dynamics equation is defined by a set of differential equations for various voltage-gated ion currents (fast sodium ion current, continuous sodium ion current, slow potassium ion current, etc.) and leakage current. By adjusting the unit area conductivity parameter and / or inactivation time constant parameter of the voltage-gated ion channels in the model, the external intervention effect is simulated. After obtaining membrane potential sequence data through simulation, the total energy consumption, synaptic energy consumption ratio, average discharge rate, and average synchronization rate between neurons of the model are calculated. Finally, a quantitative correlation model between parameter changes and the above indicators is established, clarifying the coupling effect of the target ion channel dynamics characteristics on the neural network discharge behavior pattern and energy metabolism.

The application relates to a base sequencing verification method based on ion current and tunneling current characteristics, which comprises the following steps: measuring ion current and tunneling current; comparing the drop of the ion current with a standard ion current drop to obtain the classification probability of the base corresponding to the ion current belonging to the base corresponding to the standard ion current drop; comparing the tunneling current with a standard tunneling current to obtain the classification probability of the base corresponding to the tunneling current belonging to the base corresponding to the standard tunneling current; distributing a time weight to the classification probability of the ion current according to the time of measuring the ion current relative to the time of measuring the tunneling current; inputting the classification probability of the ion current, the time weight of the classification probability of the ion current and the classification probability of the tunneling current into a neural network model to obtain a probability; and taking the base type corresponding to the maximum probability as the type of a base to be identified. The application can improve the accuracy and reliability of base identification and reduce the error rate of base identification.

The invention provides an electric field control element and an electroplating device. The electric field control element is used for allowing ion current to pass through the electric field control element and flow to a substrate during substrate electroplating, the substrate comprises a plurality of crystal grains and a plurality of concave features located in each crystal grain and used for forming a coating pattern in the substrate, and the electric field control element is of a plate-shaped structure. A plurality of pores are formed in the electric field control element, and the porosity of the electric field control element is in positive correlation with the coating rate on the substrate, so that the coating on the substrate reaches the expected thickness.

The application belongs to the technical field of single molecule detection and nanobiological sensing, and specifically provides a molecular structure change detection system and method based on photoelectric time sequence regulation, which comprises: a solid-state nanopore for forming a channel through which a to-be-detected molecule passes; a silicon carbide light-emitting device for generating an adjustable pulsed light signal; a gold nanoantenna array for gathering the adjustable pulsed light signal and generating a local plasmonic resonance field in a nanopore region; an electrode assembly for applying an adjustable bias electric field and detecting an ion current pulse signal caused by a to-be-detected molecular structure change; a time sequence control module for forming a photoelectric time interlocking identification window in the solid-state nanopore region; and a signal acquisition and analysis module for completing molecular structure change detection based on the identification window. Any reaction process accompanied by local dipole moment, spatial structure or electronic state change can generate identifiable current pulse characteristics through the system of the application, so that dynamic monitoring and accurate discrimination at a single molecule level can be realized.

The invention discloses an underwater plasma arc cutting device for a large-diameter seamless steel pipe. The underwater plasma arc cutting device comprises a water tank, a displacement system, a multi-degree-of-freedom manipulator, a plasma arc cutting system and a visual sensing and control system. A pressure sensor, a temperature sensor, a hydrogen concentration sensor and a carbon monoxide concentration sensor are arranged in the water tank. A supporting rotating mechanism is arranged in the water tank and used for clamping and driving the large-diameter seamless steel pipe to rotate around the axis of the large-diameter seamless steel pipe. The displacement system is arranged on one side of the water tank, and the multi-degree-of-freedom mechanical arm is installed on the displacement system. A cutting torch of the plasma arc cutting system is installed at the output end of the multi-degree-of-freedom mechanical arm and used for extending into the water tank to cut the steel pipe. And the visual sensing and control system is used for monitoring the cutting process in real time and controlling the plasma arc cutting system, the multi-degree-of-freedom manipulator and the supporting and rotating mechanism to move. Parameters such as the cutting torch position, the cutting track, the plasma current, the gas flow and the cutting speed can be dynamically adjusted through the visual sensing and control system.

The invention discloses an MEMS ionization vacuum sensor based on magnetic field assistance and a manufacturing method thereof, and belongs to the technical field of microelectronics. The sensor comprises a glass substrate, an emitter electrode, a lead electrode, an electron emitter, a first insulating spacer layer, a grid electrode, a second insulating spacer layer, top glass, an ion deflection electrode, an ion collector, an annular electrode and a magnetic field generation part, the manufacturing method comprises the steps of preparation of the substrate and the top glass, bonding of the electron emitter, processing of the insulating spacer layer and the grid electrode, anodic bonding, laser bonding, installation of the magnetic field component and scribing. An electric field-magnetic field composite field is used for remarkably expanding the electron motion trail, the problems that an existing sensor is weak in ion flow and poor in anti-interference capacity are solved by combining the physical isolation design of an ionization and collection area, and the sensor has the advantages of being small in size, high in precision, good in consistency and low in cost and is suitable for the fields of semiconductor manufacturing and aerospace.