133 results about "Electric charge" patented technology

Systems and methods described herein provide for charge state control of multiply-charged anions in a front end, high pressure ion guide. In some example aspects, a mass spectrometer system is provided comprising a first vacuum chamber (121) maintained at a pressure above about 500 mTorr. At least one ion guide (106) is disposed within the first vacuum chamber, the at least one ion guide comprising a plurality of rods extending along a central longitudinal axis. A controller (193) is configured to adjust an amplitude of an RF voltage signal provided to the plurality of rods so as to alternatively operate the ion guide in a first mode of operation with a lower amplitude of the RF voltage signal so as to reduce the likelihood of charge reduction by electron detachment so as to substantially maintain the isotopic distribution of the ions during transmission of ions through the ion guide, and a second mode of operation with a higher amplitude of the RF voltage signal so as to increase the likelihood of electron detachment from ions being transmitted therethrough.

The invention relates to an electrophotographic photoreceptor, a process cartridge, and an image forming apparatus. The electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer of a single-layer type disposed on the conductive substrate. The photosensitive layer has an absorption coefficient of 0.008 or less at a wavelength of 1000 nm and contains a binder resin, a charge generating material, an electron transporting material, and a hole transporting material. The charge generating material is at least one selected from a hydroxygallium phthalocyanine pigment and a chlorogallium phthalocyanine pigment and is contained in an amount of 0.9% by weight or more and 1.8% by weight or less relative to the binder resin.

Methods and systems for identifying or classifying charge states of detected ions. An example method for classifying a charge state of detected ions may include generating a pulse for each ion in a plurality of ions detected by a detector, wherein each pulse has a pulse characteristic; generating a pulse-characteristic distribution of the generated pulses; and based on the pulse-characteristic distribution, generating an identification of the charge state of one or more ions in the plurality of ions.

The invention relates to the technical field of partial discharge processing, and discloses a partial discharge processing method and system based on electric field analysis, and the method comprises the steps: synchronously collecting the multi-point electric field intensity and charge density of a device surface, recognizing a charge abnormal region, and calculating an electric field non-uniformity index; inputting the information into a finite element analysis model, simulating an electric field distortion process, and positioning potential discharge induction points; predicting a charge accumulation trend of each potential point in combination with historical operation data, and constructing an optimization function taking minimization of global electric field distortion and charge accumulation risk as a target according to the charge accumulation trend; and with the function as a convergence target, an optimal electric field compensation parameter is automatically solved through iterative calculation. According to the partial discharge processing method and system based on electric field analysis, predictive recognition and counteracting are carried out on discharge core inducements, and active and accurate suppression of partial discharge of equipment is achieved.

A microfluidic system for controlling movement of charged particles, including a microfluidic channel, at least three electrodes, a plurality of conductor leads and at least two drive power supplies. Each electrode is in electrical contact with the electrolyte, and a pseudo-capacitance, a double-layer capacitance or a combination thereof is formed at an electrode-electrolyte interface. Each drive power supply periodically produces a voltage or current excitation, and is connected to one or more electrodes via the conductor leads. Each electrode continuously undergoes charging-discharging alternating cycles to form a traveling-wave electric field in the microfluidic channel. A maximum charge capacity of each electrode is greater than a total amount of charges transferred thereon during a charging or discharging process. A control method based on the microfluidic system is also provided.

The application discloses a GIS insulator partial discharge charge on-line detection method and system, and relates to the technical field of charge detection.The method comprises the following steps: according to a GIS simulation model, simulating the electric field distribution of charge generation in the partial discharge process, determining the performance index of the required electric field sensing probe, and preparing the electric field sensing probe; according to an epoxy resin model, obtaining the charge density, the charge distribution range and the electric field signal collected by the electric field sensing probe under different voltage pulses, and constructing a test data set; according to the GIS simulation model, obtaining the electric field signal under different charge densities and different charge distribution radii, and constructing a training data set; training a neural network model according to the training data set, and correcting according to the test data set; and collecting the partial discharge electric field signal by using the electric field sensing probe array arranged on the outer wall of the GIS insulator, and obtaining the charge density and the charge distribution range on the surface of the insulator by using the neural network. Non-invasive and non-contact on-line measurement is realized.

The application relates to a satellite energy acquisition system based on space charged particle collection, belonging to the technical field of spacecraft power supply. The application aims at solving the problem that the discharge phenomenon of the space charged particles deposited on the surface of a satellite can cause physical damage to materials. The application comprises a collection capacitor used for capturing the space charged particles, forming a high-voltage electrostatic field through the accumulated charges of the space charged particles; an energy-taking conversion circuit used for converting the high-voltage electrostatic field energy stored in the collection capacitor into low-voltage electrostatic field energy and transferring the low-voltage electrostatic field energy to an energy storage capacitor; the energy storage capacitor is used for storing the low-voltage electrostatic field energy, setting a target electric field energy according to the working requirement of a rear-end load, and discharging after the target electric field energy is reached; and a switch voltage stabilizing circuit used for adjusting the discharging output voltage of the energy storage capacitor, realizing constant voltage power supply for the rear-end load. The application can reduce the charging and discharging fault risk of the surface of the satellite by collecting the particles radiated to the satellite and controllably transferring and utilizing the particles.

The invention relates to a cyclotron which enables the production of α- or β-emitting radionuclides. The cyclotron, with a magnetic periodicity of 3, comprises three accelerating cavities connected to the centre, thus not requiring phase control between the cavities, forming a single high-frequency resonator. The six accelerating gaps per turn enable rapid acceleration (the angle ϕ between the accelerating gaps of each cavity being approximately 30°) which is essential for acceleration at the third and sixth harmonics. This cyclotron preferably has an injection system (31) supplied by different types of ion sources, making it possible to efficiently accelerate charged particles having Z / A ratios equal to 1 / 2 and to 1 / 4. The cyclotron may also have stripping extraction means positioned in the cyclotron so as to extract the charged particles and double their state of charge. These particles enable a set of nuclear reactions for producing α-emitting radionuclides.

The invention discloses a non-Newtonian fluid-based particle and biomolecule stepping separation method and device. Through microstructure arrangement of the non-Newtonian fluid, particles and biomolecules which cause different shear rates have blocking and passing characteristics, molecules with different volumes and different charge quantities are separated under the action of a square wave electric field, or molecules with different volumes and different charge quantities are separated under the action of a uniform gradient square wave magnetic field. The invention relates to a method for separating particles with different ferromagnetism or biomolecules combined with magnetic microbeads. Comprising a non-Newtonian fluid and a carrier thereof, a square wave electric field for providing power and a corresponding electrode or a magnetic field generator, and a support carrier for accommodating particles and biomolecules. After the particles and the biomolecules are separated in the square wave electric field for a period of time, the electric field intensity is changed, the second type of particles or biomolecules are separated, and the electric field intensity is sequentially switched according to the number of components to be separated, so that the separation purpose is achieved.

Described herein are systems and methods for assembling electron spin and charge to possess one or more properties of a magnetic monopole. Example systems can include a laser configured to generate a light beam with a first spin and / or a first orbital angular momentum, and a surface including a coupling structure having a geometrical charge. When exposed to the light beam, the surface is configured to enable excitations of surface plasmon polariton field waves at metal-dielectric interfaces of the coupling structure to generate a plasmonic field. The surface can be configured to focus the plasmonic field to form a plasmonic vortex, in which plasmonic spin-orbit coupling between a total spin and a total orbital angular momentum forms a topological spin texture that is homotopic to that of a magnetic monopole.

Anomalously large charge transport is provided using room temperature MIS (Metal-Insulator-Semiconductor) capacitive structures. Conductance can be 1 O× or more (often orders of magnitude more) than what would be expected from the classical properties of the structure. This anomalous behavior is attributed to topological states formed in the MIS structures under bias when there are both in-plane and out of plane components of the biasing electric field. One signature of this new physical effect is lateral supercurrents between the MIS structures. Another signature of this new physical effect is observation of quantum Hall effects at room temperature and in the absence of significant magnetic fields.

The application belongs to the technical field of space plasma environment detection, and particularly relates to a device and method for measuring particle composition and incident direction, which comprises: a detection unit array, which is respectively provided with a plurality of independent charge input channels in an inner circumferential direction and an outer circumferential direction; each charge output channel is used for outputting different initial charge pulse signals in the inner circumferential direction and different terminal charge pulse signals in the outer circumferential direction after a space charged particle is incident at an incident angle, and delay and amplification are performed respectively; and a back-end circuit analysis processing module, which is used for obtaining actual time of flight and actual incident azimuth angle time of the charged particle according to different initial pulse signals and terminal pulse signals collected for each charge output channel, obtaining the composition of the charged particle according to the obtained actual time of flight of the charged particle, and obtaining the actual incident azimuth angle of the charged particle according to the actual incident azimuth angle time.

To align two-stage aperture holes with high precision.SOLUTION: A beam detector includes a first aperture substrate formed with a first passage hole smaller than the inter-beam pitch of the multi-charged particle beam, a second aperture substrate formed with a second passage hole through which one detection target beam that has passed through the first passage hole can pass, and a sensor that detects a beam current of the detection target beam that has passed through the second passage hole. The second aperture substrate includes a conductive material, and a plurality of third passage holes through which light can pass are formed around the second passage hole.SELECTED DRAWING: Figure 1

The application belongs to the technical field of spintronics, and specifically forms a vortex of electron drift velocity at the interface of a magnetic layer and a metal layer by a difference in conductivity, further utilizes a spin vortex coupling effect to realize conversion of charge current to spin current, and thereby drives a magnetic moment to flip through a spin-orbit moment. As an example, the application deposits a Cu layer with high conductivity on a PtCo alloy layer with lower conductivity through magnetron sputtering, and constructs a heterostructure with a PtCo / Cu interface spin vortex coupling effect. By increasing the thickness of the Cu layer to improve the conductivity of the Cu layer, a significant improvement in the orbital moment efficiency can be observed. Not only does this provide valuable experimental evidence for in-depth understanding of the physical mechanism of interface-induced spin current, but also enriches the conversion approach between charge current and spin current, and opens up a simple and efficient new path for the research and design of a new generation of spintronic devices.

The invention relates to a particle collision device (10) for detecting an electrical charge after a collision of a particle (12) with a collision partner (14), with an acoustic particle holding device (16), a particle preparation device (32) for changing at least one particle property of the particle (12), a collision partner (14) and a charge detector (28) which is configured to detect an electrical charge of the particle (12) and / or the collision partner (14) after a collision of particle (12) and collision partner (14).

The present application relates to rare earth resources exploration technical field, specifically to a kind of ion adsorption type rare earth content determination method, system, equipment and medium, the method by constructing the quantitative relationship prediction model between the normalized charge rate and total rare earth oxide mass fraction, impedance measurement system is arranged in study area, impedance amplitude and phase are collected, normalized charge rate is obtained based on impedance amplitude and phase, the quantitative relationship prediction model between the normalized charge rate and total rare earth oxide mass fraction is constructed, and total rare earth oxide mass fraction is calculated based on quantitative relationship prediction model.The present application method considers the surface electrical property influence of ion adsorption type rare earth ore sample, establishes the correlation between frequency spectrum induced polarization response and chemical parameter, and estimates the rare earth oxide content in ion adsorption type rare earth sample using it.

According to the insulator surface charge cleaning method based on plasma discharge provided by the invention, the surface charge of the insulator can be actively, quickly and safely neutralized and cleaned through a composite discharge mode of pulse + direct current bias under the condition that equipment is not disassembled; the method comprises the following steps; equipment connection; setting and generating parameters of a composite waveform; high-voltage amplification; the plasma discharges to sweep charges; the discharge plasma device generates a high-pulse voltage electric field to reach gas breakdown field strength, a violent ionization reaction occurs, a large number of charged particles are further generated, and when superposed voltage acts during a pulse interval, the charged particles generated during the pulse interval migrate to the surface of the insulator under the action of the electric field generated during the pulse interval, so that the charged particles are formed. When residual charges in the discharge space are swept, migrated charges are used for neutralizing charges on the surface of the insulator, so that the charges on the surface of the insulator are swept; and cleaning is finished.

This light-emitting element comprises a charge transport layer between an anode and a light-emitting layer, or between the light-emitting layer and a cathode. The charge transport layer includes a first layer, a second layer, and a third layer in this order from the anode side. The second layer has a lower ionization potential and a lower electron affinity than the first layer and the third layer. Alternatively, the second layer has a higher ionization potential and a higher electron affinity than the first layer and the third layer.

Organic emissive devices are provided that include host structures with electron and / or hole transporting components having specific energy levels that promote good charge balance and enhanced charge capture. The disclosed energy level structures provide host systems that reduce exciplex formation and thereby promote improved device internal quantum efficiency and stability, or which intentionally include exciplex formation so as to modify the average orientation of the dipole.

The invention relates to a carrier (1) for a composite substrate (S). The carrier comprises a base substrate and a trapping layer (3a) made of polycrystalline silicon arranged on the base substrate (2). The trapping layer has a first type of electrical trap having an activation energy of 0.383 eV (tolerance 0.008 eV) and an effective trapping cross-section for holes and electrons of less than 1 * 10-16 cm2. The trapping layer has a second type of electrical trap having an activation energy of 0.428 eV (tolerance of 0.016 eV) and an effective trapping cross-section for holes and electrons of less than 1 * 10-16 cm2.

The invention discloses a numerical simulation method, device, equipment and medium for surface charges of an epoxy core in a direct-current gas insulation sleeve, and relates to the field of electrical equipment insulation design, and the method comprises the steps: determining a conductivity tensor based on a pre-prepared epoxy core sample; constructing a target geometric model of the direct-current gas insulation sleeve based on the geometric parameters and the working environment information of the direct-current gas insulation sleeve and the parameter information of the aluminum foil in the epoxy core body; based on the conductivity tensor and the physical process of charge accumulation on the surface of the epoxy core body, constructing an electric-thermal-wet multi-physical field coupled target simulation model; and performing grid encryption processing on the target geometric model, and based on the processed model, a preset finite element solver and the target simulation model, determining a surface charge numerical simulation result so as to utilize the simulation result to complete insulating sleeve design operation. According to the invention, the charge accumulation rule on the surface of the epoxy core body in the direct-current gas insulation sleeve under different working conditions can be accurately output, and the operation reliability of related equipment is improved.

This invention discloses a method for measuring the proximity induction of workers in complex work scenarios, comprising the following steps: S1, establishing a complex work scenario recognizer based on MR-CNN; S2, acquiring images of complex work scenarios on-site and inputting them into the complex work scenario recognizer obtained in step S1 for scene feature recognition, obtaining scene feature recognition results; S3, calculating the electric field strength based on the image charge method according to the scene feature recognition results obtained in step S2, obtaining the electric field strength, and calculating the electric field strength error and the time consumed in the electric field strength calculation, respectively, obtaining the electric field strength error and the time consumed in the electric field strength calculation; S4, optimizing the electric field strength, electric field strength error, and electric field strength calculation time obtained in step S3 based on the simulated annealing algorithm, thereby obtaining the proximity induction measurement results of the electric field strength.

A charge-detection mass spectrometry process includes capturing a time-varying signal, representing a current induced by the oscillatory motion of an ion within a capture region at a detector; processing the time-varying signal to derive a frequency of the oscillatory motion; and generating, based on the amplitude of the time-varying signal and the derived frequency of the oscillatory motion, Selective Temporal Overview of Resonant Ion (STORI) data. Real -Values ​​over time and HISTORY Imag -Represent values ​​over time; regenerate the STORI data based on a variation of the frequency of the oscillation over time and determine a charge state of the ion based on the regenerated STORI data.

To provide a multi-beam drawing device capable of avoiding data processing for defective beam correction not being able to keep up with the drawing processing speed.SOLUTION: A multi-beam drawing device includes a molded aperture array substrate, a defect correction data creation unit that creates defect correction data that defines a dose modulation rate to compensate by distributing the dose at the position of a defective beam, which is always OFF among the multi-charged particle beams, to one or more other pixels by using a dose distribution in which each position of a unit area on the sample surface corresponding to the irradiation area of the entire multi-beam is defined by a uniform dose regardless of the drawing pattern, a dose map creation unit that calculates an individual dose amount according to the drawing pattern for each drawing pattern, a dose correction unit that reads defect correction data from the storage device for each drawing pattern and obtains a dose amount by correcting the individual dose amount at each position on the sample, and a drawing mechanism that draws a drawing pattern on the sample using a corrected dose amount.SELECTED DRAWING: Figure 1

The application discloses a method for quickly obtaining a steady-state space electric field of an insulation layer of a self-powered detector, and comprises the following steps: obtaining radiation field information and detector information at a position where a self-powered neutron detector is located, and simulating to obtain an electric charge deposition amount generated by irradiation current in different radius intervals per unit time of the detector; according to the law of conservation of electric charge, estimating an electric charge loss amount generated by conduction current in different radius intervals of an insulator per unit time under a steady-state condition; combining Ohm's law to establish an expression of the electric charge loss amount generated by the conduction current about an electric field intensity under the steady-state condition, and combining a boundary condition to obtain an electric field intensity distribution, an electric charge density distribution and a potential distribution. The application can effectively improve the calculation efficiency and realize efficient simulation of the sensitivity of the self-powered neutron detector.

The invention discloses an ion thruster acceleration gate downstream pit-groove corrosion morphology prediction method, which comprises the following steps: establishing a computational domain, and determining boundary conditions of the computational domain; ions are injected from the left boundary of the computational domain, charges carried by all the ions are mapped to grid nodes of the computational domain through a weight distribution method, and space charge density distribution is obtained; solving three-dimensional potential distribution and three-dimensional electric field distribution in a computational domain based on space charge density distribution and set boundary conditions; pushing the ions to move based on the three-dimensional electric field distribution, and updating the positions and speeds of all the ions; simulating a charge exchange collision process of ions and neutral atoms based on the updated ion position and speed, and updating the state of the collided ions; counting information of charge exchange ions impacting the downstream surface of the acceleration gate within a set time; and calculating the three-dimensional corrosion morphology of the downstream surface of the acceleration gate based on charge exchange ion information in combination with a sputtering yield model and gate material attributes.

The invention relates to the technical field of speckle preparation equipment, and provides a speckle particle preparation system and a method thereof.According to the method, liquid pigment is gathered at an outlet of a liquid drop generation device through the liquid drop generation device to form liquid drops instead of being directly sprayed out, the liquid drop generation device is conductive and is connected with a first pole of a high-voltage generator, and the high-voltage generator is connected with a second pole of the high-voltage generator; under the condition that the high-voltage generator applies voltage, a high-voltage electric field can be formed between an outlet of the liquid drop generation device and the conductive device, liquid drops are enriched with charges of the same polarity under the action of the high-voltage electric field, and after the charges of the same polarity in the liquid drops are enriched to a certain degree, the surface tension of the liquid drops cannot overcome the mutual exclusion electric field force between the charges of the same polarity; the liquid drops are atomized and broken to form fine spray, so that speckle particles which are uniformly distributed are formed on the surface of the sample to be detected.

The invention discloses an insulator sample internal charge transport simulation method and system based on a Nebula simulator, and the method comprises the steps: mapping a continuous or non-grid particle accumulation behavior into a charge density source item on a finite difference grid through a finite grid drift diffusion module after obtaining scattering simulation data of the Nebula simulator; then, a strong coupling iteration mechanism is used for simultaneously solving a Poisson equation and carrying out drift diffusion calculation in each micro time step so as to accurately and efficiently iteratively calculate the electric field evolution process in the insulator, and the charge density, the electric field and the dynamic evolution process in the insulator are fed back to a Nebula simulator; therefore, the technical problem that an existing Nebulla simulator neglects an internal electric field and cannot effectively describe the long-term accumulation and evolution process of charges in a material is solved, and the simulation precision of electron beam measurement and imaging is improved.