613 results about "Charged particle" patented technology

The invention discloses a non-uniform and conformal grid-oriented electromagnetic particle adaptive simulation method and system, and relates to the technical field of electromagnetic particle simulation. The method comprises the following steps: performing non-uniform right-angle mesh generation based on a charged particle average free path, and identifying conformal mesh units; carrying out initialization by adopting macro particles; executing electromagnetic field propulsion, field interpolation, particle propulsion, charge current backfilling and collision simulation in each time step; and accelerated calculation is realized through a CPU and GPU hybrid parallel architecture. Through the method, the numerical simulation precision can be improved, the adaptability of complex geometry is enhanced, the coupling stability of the electromagnetic field and the particles is ensured, the information interaction between the field and the particles is improved, and the large-scale calculation efficiency is improved.

Systems or techniques are provided for facilitating improved digital twin calibration for scientific instruments. In various embodiments, a system can synchronize, via execution of a state-wide Bayesian filter, a parametric state of a digital twin with a physical state of a scientific instrument. In various instances, the state-wide Bayesian filter can comprise a set of calibration iterations, each of which can comprise a Bayesian update to an entirety of the parametric state based on an iteration-common observable that is exhibitable by the scientific instrument and simulatable by the digital twin. In various cases, the scientific instrument can be a charged-particle microscope, the parametric state of the digital twin can be an aberration coefficient vector of the charged-particle microscope, and the iteration-common observable can be a Fourier transform of a convergent beam electron diffraction pattern of an amorphous carbon specimen captured by the charged-particle microscope.

Embodiments of the present invention relate to a technology for easily adjusting a level of static electricity required for a substrate according to a semiconductor process by injecting static electricity into the substrate or removing static electricity already formed on the substrate. A static electricity control device for injecting static electricity into a substrate disposed in a vacuum chamber or removing static electricity formed on the substrate in a semiconductor processing system, according to an embodiment, comprises: a charged particle generation unit, disposed on an upper side inside the vacuum chamber, that generates charged particles including positive ions and electrons by generating a vacuum ultraviolet ray (VUV) and reacting the VUV with a process gas inside the vacuum chamber; a grid provided with a plurality of holes, disposed on a lower side of the charged particle generation unit, that selectively pass the type of charged particles downward according to an input voltage; a substrate support, disposed below the grid and having the substrate positioned thereon, that is made of a conductive material and guides the charged particles passing through the grid toward the substrate at a predetermined density according to an input bias voltage; and a static electricity control unit that controls the static electricity of the substrate by supplying a pulsed voltage to at least one of the grid and the substrate support, wherein the grid and the substrate support are arranged so as to have a separation distance that is within four times the mean free path of the process gas according to environmental conditions of the vacuum chamber.

The invention relates to the technical field of light sources, particularly discloses a method and a device for adjusting the central position of a plasma, and aims to realize accurate positioning and stable control of the plasma by accurately controlling output parameters of a magnetic field generator. According to the method, a magnetic field generator with a specific shape and distribution is utilized, a magnetic field with a closed magnetic line structure is generated in a plasma chamber, charged particles in plasma are guided to move along a preset path, and it can be ensured that the plasma reaches and is kept at an expected position by monitoring and adjusting magnetic field parameters in real time.

A fine-adjustable electromagnetic lens for a charged-particle optical apparatus comprises a magnetic circuit assembly including one or more ring magnets, and a sleeve insert of generally rotational symmetry around a longitudinal axis. The sleeve insert surrounds a passage opening extending along the longitudinal axis, and comprises several electrically conductive electrode elements configured to generate an electrostatic field within the passage opening. The ring magnets are arranged circumferentially around an inner yoke shell and surrounded by an outer yoke shell; the inner yoke shell in turn surrounds a central portion of the sleeve insert. The ring magnets are magnetized such that the two magnetic poles are oriented towards the inner and outer yoke shell, respectively. The inner and outer yoke shell together with the ring magnets form a magnetic circuit having at least one gap, in order to generate a magnetic field reaching inwards into the passage opening and spatially overlapping with the electrostatic field generated by the sleeve insert.

A multi-beam charged particle system and a method of operating a multi-beam charged particle system can provide improved image contrast. The multi-beam charged particle system comprises a filter element or an active array element in a detection system, which can provide improved, anisotropic image contrast. The disclosure can be applied for applications of multi-beam charged particle system, where higher desired beam uniformity and throughput may be relevant.

A multi-aperture lens plate of a multi-beam generator for a charged particle multi-beam apparatus is described. The multi-aperture lens plate includes an aperture lens plate body, the aperture lens plate body comprising: an array of N beamlet openings, the array of N beamlet openings having beamlet openings, the array of N beamlet openings configured to generate N primary charged particle beamlets, wherein N is a number >=2; and a plurality of correction openings through the aperture lens plate body configured to locally influence a lens field of the beamlet openings, wherein the correction openings are different than the beamlet openings.

A neutron capture therapy system. The neutron capture therapy system includes: a charged particle generation device used for generating charged particles; an accelerator used for accelerating the charged particles; a neutron generation device including a particle transmission part and a neutron generation part provided in a first end part of the particle transmission part, wherein the charged particles can pass through the particle transmission part and interact with the neutron generation part to generate neutrons; a beam shaping body having an accommodating cavity, wherein the accommodating cavity includes a first surface and a second surface intersecting with the first surface, and the first end part is provided in the accommodating cavity; and a first fitting part provided between the first surface of the accommodating cavity and the outer surface of the particle transmission part. The first fitting part is configured to at least surround part of the particle transmission part.

A charged particle system including a plasma source configured to generate an ion beam including a plurality of ion species and an ion beam optics chamber in fluid communication with the plasma source. The ion beam optics chamber includes an electromagnetic element configured to generate a first magnetic field to separate each of the ion species of the plurality of ion species and a conductive container configured to measure a first current corresponding to a first ion species of the plurality of ion species.

A glazing unit (101) is provided configured for reception of radio frequency signals, the glazing unit (101) has an optical layer (143) including electrophoretic charged particles and being arranged between a first substrate (141) and a second substrate (142), electrodes (122, 123) on the substrates (141, 142) cooperate in the electrophoretic modulation of the charged particles' position causing modulation of light passing through the glazing unit (101). The glazing unit (101) has at least one antenna (121) for reception of a radio frequency signal. The antenna (121) may be arranged on a side of a substrate (141, 142) or on a side of a pane (111, 112), e.g., glass pane.

A particle acceleration and extraction system includes a cyclotron having a stripping assembly and a target. The cyclotron includes an acceleration chamber and is operable to generate a magnetic field and an electric field in the acceleration chamber such that charged particles in the acceleration chamber are accelerated along a spiral path extending outward and at increasing energies from an initial energy E1 to a final energy E2, E2 being greater than E1. The target defines a target location outside of the acceleration chamber. The stripping assembly is positioned in the acceleration chamber and is operable to extract a charge from the charged particles at an intermediate location of the outward spiral path whereby the post-stripping assembly particles are directed towards the target location. The charged particles have an intermediate energy E3 at the intermediate location that is between E1 and E2.

Some embodiments are related to a method of or apparatus for forming an image of a buried structure that includes: emitting primary charged particles from a source; receiving a plurality of secondary charged particles from a sample; and forming an image based on received secondary charged particles that have an energy within a first range.

A wearable device may include a biofluid generation unit, a microfluidic channel for transporting the biofluid, and a sensing module including one or more electrochemical aptamer-based sensors having attached reporters that are displaceable by a target analyte. A wearable device may include electrodes for producing a potential sufficient for exchanging charged particles with the displaced reporters. A wearable device may include a processor for executing computer readable instructions including causing activation of the electrodes to exchange the charged particles with the displaced reporters, receiving a measurement of the exchanged charged particles, determining a concentration of the target analyte in the biofluid based on the received measurement, detecting a circadian rhythm based on the determined concentration; and generating an individualized set of circadian entraining factors based on the detected circadian rhythm to guide a user towards an improved circadian rhythm.

Systems / techniques are provided for facilitating vacuum simulation for charged-particle microscopy grid receptacles. In various embodiments, an apparatus can comprise a positioning mechanism configured to be coupled to a vacuum chamber of a charged-particle microscope. In various aspects, the apparatus can comprise an adjustable force applicator coupled to the positioning mechanism and configured to simulate a vacuum for a microscopy grid receptacle located on an inner surface of a load-lock door of the vacuum chamber by mechanically pressing against an outer surface of the load-lock door.

The invention relates to a converter valve water-cooling voltage-sharing electrode charged particle distribution simulation method and system. The method comprises the following steps: constructing a three-dimensional geometric model of multiple types of voltage-sharing electrodes; constructing a charged particle multi-physics field coupling model based on the three-dimensional geometric model, wherein the coupling model comprises a flow field control equation, an electric field control equation and a particle dynamics model; simulation boundary conditions and initial conditions are set, the boundary conditions comprise flow field boundary conditions and electric field boundary conditions, and the initial conditions comprise particle release initial conditions; on the basis of the coupling model, the simulation boundary condition and the initial condition, particle tracking and distribution characteristic resolving are executed, a simulation result is obtained, and the simulation result comprises a particle motion trail, a particle capture rate and a capture area. Compared with the prior art, the method has the advantages of breaking through macroscopic monitoring limitation, realizing microcosmic dynamic quantitative analysis, analyzing a multi-field force competition mechanism, revealing a local scaling source, verifying the advantages of a multi-electrode structure, supporting optimal design and the like.

The invention provides a half-circle multi-machine-head radiotherapy system and method, and the system comprises a beam generation assembly; the beam current control assembly is connected with the beam current generation assembly; the beam output assembly is connected with the beam current control assembly, and the beam output assembly comprises a plurality of treatment heads which are all connected with the beam current control assembly; the rotating motor is arranged in the treatment head; and the rotating target is fixed with an output shaft of the rotating motor, the rotating target is relatively rotatably connected with the treatment head, and the rotating target is arranged in the treatment head. Charged particles are generated through the beam generation assembly, then the moving direction of the charged particles is changed through the beam control assembly, the charged particles with the changed direction are distributed to rotating targets in a plurality of treatment heads within a giant pulse time, and different radiation doses are given to a focus at different angles by distributing different pulse numbers to the rotating targets.

A particle beam illuminating system includes a beam steering control subsystem configured to receive charged particles and to generate and scan a particle beam over at least a portion of a target located a distance of at least 10 meters from the beam steering control subsystem. The system further includes a beam charge control subsystem configured to receive the particle beam from the beam steering control subsystem and to control an output charge of the particle beam impinging the target.

The invention provides heat pump comprising a chamber for accommodating electrically charged or chargeable particles, having a thermal conductive wall, and an electrically insulating sink wall. A resistive layer made of electrical resistive material, is positioned outside the chamber with one of its faces proximal to the sink wall. The chargeable particles hit the internal surface of the sink wall, and the thermal conductive wall is in thermal communication with the particles. Thermal fluctuations of the charged particle in the chamber induce variable electric field on the resistive layer, which is harvested into electric current.

The invention discloses a preparation method of a high-aspect-ratio glass through hole and the glass through hole. The preparation method comprises the following steps: forming a photoresist mask on the surface of a substrate; performing a first etching step, performing isotropic first etching on the substrate by using plasma of a first gas from which charged particles are filtered, and forming a first polymer layer on the inner wall of the formed through hole and the photoresist mask for protection; performing a second etching step, performing anisotropic second etching on the first polymer layer on the bottom of the inner wall by using plasma of a second gas, exposing the substrate below, and performing the first etching again; after the first etching step for a first preset number of times is completed every time, performing a treatment process on the formed through hole; and repeatedly executing the first etching step, the second etching step and the treatment process until the through hole is formed in the substrate. The process can be simplified, the selection ratio can be improved, the efficiency can be improved, and better side wall smoothness can be realized.

The invention discloses a device for performing direction control and separation on charged particles in electrolyte, which comprises a microfluid channel, the microfluid channel is provided with a sample inlet port and a sample outlet port, a fluid flows from the sample inlet port to the sample outlet port at a speed v0, a separation chamber is formed in the microfluid channel, the fluid contains the charged particles, and the separation chamber is communicated with the sample inlet port and the sample outlet port. Charged particles are separated in the separation chamber; the number of the electrodes in each group of electrodes is the same or different, each electrode is in contact with the fluid, a pseudocapacitor and / or a double-layer capacitor are / is formed on the contact interface of the electrode and the fluid, the electrodes are arranged in the microfluid channel in parallel, and a certain angle can be formed between the arrangement direction and the flowing direction of the fluid; a plurality of conductor leads; and each driving power supply is connected with one group of electrodes, the driving power supplies generate periodic voltage or current excitation, and the voltage excitation or the current excitation output by the driving power supplies in an output period is in a changing state.

The application discloses a deposition device based on a programmable electrode array and a patterning deposition method, which comprises the following steps: generating charged particles and / or mist droplets by a charged particle source; an insulating substrate comprises a front surface for receiving deposition and a back surface opposite to the front surface; a programmable electrode array is arranged on the back surface of the insulating substrate and used for guiding the deposition of the charged particles and / or the mist droplets; a voltage driving unit is used for providing independent voltage signals for the electrode unit, and the voltage signals are pulse signals or direct current signals; and a control unit is used for programming and controlling the output of the voltage driving unit according to a target pattern, so that the programmable electrode array forms a spatial electric field corresponding to the target pattern on the front surface of the insulating substrate. Through the deposition device based on the programmable electrode array and the patterning deposition method, any pattern can be generated and changed instantly through programming of an electric field, and a physical mask is replaced by an electric mask, so that the physical mask is not needed, and the flexibility is extremely high.

Provided herein is an electron particle system comprising an electron source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Also provided herein is a charged particle system comprising a charged source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Further provided herein is a method of using an insulation gas in a high voltage component of an electron particle system.

The present invention relates to a cyclotron comprising first and second internal ion sources configured to form first and second beams of identical charged particles wherein the cyclotron is further configured to generate a local asymmetry of an accelerating electric and / or magnetic field, the first beam and the second beam are combined to form a combined beam and the combined beam passes through a single extraction outlet. The invention also relates to an acceleration system comprising N cyclotrons, where M cyclotrons are the cyclotrons according to the invention, Mgt; 0. The invention also relates to a device for treating a patient by BNCT, comprising: an acceleration system according to the invention; a target configured to emit an epithermal neutron beam when bombarded with the proton or deuteron multi-combination beam; and a treatment region configured to hold a patient to be treated within the treatment region.

The invention relates to a charged particle microscope (CPM) comprising a sample holder, for holding a sample; an ion beam column, for producing an ion beam that propagates along an ion axis onto said sample for creating a lamella in said sample; and a detector, for detecting radiation emanating from said lamella and / or said sample in response to irradiation by said ion beam. The CPM comprises a controller for at least partially controlling operation of said microscope. According to the invention, a manipulator device is provided that is arranged for transferring said lamella created in said sample out of said sample, wherein said manipulator device comprises a first elongated manipulator member with a first outer end, and a second elongated manipulator member with a second outer end. The outer ends are movable for mechanically gripping and releasing said lamella. In embodiments, the elongated manipulator members comprise off-set parts that increase manoeuvrability (accessibility) and monitorability of the manipulator device during use.

This invention discloses an ion trap teaching experiment observation device, including an observation box, an ion trap housed within the observation box, and a laser. The ion trap includes a linear ion trap and a ring-shaped ion trap. The observation box is a transparent, insulating box. The observation box has electrical ports for introducing AC and DC voltage sources to the electrodes of the ion trap. The observation box also has a first air blowing pipe port and a second air blowing pipe port. The first air blowing pipe port is used to install a first air blowing pipe to blow charged particles into the linear ion trap. The second air blowing pipe port is used to install a second air blowing pipe to blow charged particles into the ring-shaped ion trap. Two lasers are provided, one on each side of the linear ion trap and the other on the ring-shaped ion trap, for irradiating the trapped charged particles. This invention clearly demonstrates the flexibility of trapping physics based on radio frequency electromagnetic fields and symmetry.

The systems, methods, and communication cables taught herein provide cryogenic cooling, high voltage connections, and other electrical connections to a sample on a stage within a vacuum environment while still enabling stage motion in at least five degrees of freedom with minimal stage vibration to achieve new or improved measurement applications in situ within a microscope, such as in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, in-situ microscopy, and in-situ microscopy. Such as atomic probe chromatography and testing of quantum computing components. The connection cables taught herein combine connections into a single connection cable within an outer spring suitable for use in ultra-high vacuum. These connection cables are also shaped and configured to maintain at least a minimum spacing distance from components in the surrounding environment (e.g., chamber walls and other equipment) to prevent mechanical, electrical and thermal shortcuts.

The application provides a granular near-wall aerodynamic force coefficient measuring device and a measuring method, which comprise an airflow pipeline, a granular injection assembly and an electric field generating assembly. The airflow pipeline is provided with a stable flow direction clean airflow, the granular injection assembly is used for injecting charged particles into the airflow pipeline, and the electric field generating assembly is used for forming a flow direction electric field and a vertical electric field in the airflow pipeline. The flow direction electric field is used for providing an electric field force in the opposite direction of the flow field for the charged particles in the airflow pipeline. The vertical electric field is used for providing an electric field force in the opposite direction of gravity for the charged particles in the airflow pipeline. By controlling the electric field intensity of the flow direction electric field and the vertical electric field, the charged particles can be kept static in the main flow area and the near-wall area, respectively, and the aerodynamic force coefficient of the charged particles in the near-wall area is calculated based on the size of the charged particles and the position of the charged particles in the near-wall area. The application can measure the force characteristics and force rules of the charged particles at different wall positions.

A miniature electrode apparatus is disclosed for trapping charged particles, the apparatus includes, along a longitudinal direction, a first end cap electrode, a central electrode having an aperture, and a second end cap electrode. The aperture is elongated in the lateral plane and extends through the central electrode along the longitudinal direction and the central electrode surrounds the aperture in a lateral plane perpendicular to the longitudinal direction to define a transverse cavity for trapping charged particles. Electric fields can be applied in a y-direction of the lateral plane across one or more planes perpendicular to the longitudinal axis to translocate and / or manipulate ion trajectories.

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.

A detection apparatus and method for detecting charged particles. The device relies on a detection assembly comprising microchannel plates. The useful surface of the microchannel plate device is maximized in time through the use of beam deflection means upstream of the detection front.