262 results about "Particle capture" patented technology

The invention relates to the technical field of cell testing, and discloses a fuel cell multi-impurity composite effect testing system and method. Comprising an impurity generation module, a particle capture module, a mixing and conveying module, a fuel cell test module, a data acquisition module and a data processing and analysis module, breaks through the limitation of pollutant interaction deficiency in a single factor test, and effectively solves the technical problem that the pollutant synergistic effect is difficult to simulate under a real working condition. And a dual correction mechanism is constructed based on the synergistic effect coefficient and the information entropy weight, and the impurity synergistic effect coefficient is introduced when the initial attenuation rate is determined, so that the simplified hypothesis of the traditional linear superposition model is broken through, and the nonlinear attenuation characteristics under the multi-impurity composite action are accurately captured. The initial attenuation rate is secondarily corrected by calculating the information entropy weight of each impurity, the contribution difference of the influence of different impurity concentration distributions on the overall performance is effectively quantified, and the accuracy and engineering applicability of fuel cell performance attenuation prediction are remarkably improved.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

The invention belongs to the technical field of diesel engine tail gas aftertreatment, and particularly relates to a partitioned DPF catalyst and a preparation method thereof.The catalyst comprises a carrier, a first coating, a second coating and a third coating; the first coating is coated from the air inlet end, and the length of the first coating accounts for 100% of the length of the carrier; the first coating is coated with the second coating from the air inlet end, and the length of the second coating accounts for 60-90% of the length of the carrier; the third coating is coated on the second coating from the air inlet end, and the length of the third coating accounts for 30-50% of the length of the carrier; the first coating contains a first catalytic material; the second coating contains a second catalytic material; the third coating contains precious metal and a third catalytic material, and the content of the precious metal is 15-30 g / cfu. The DPF catalyst disclosed by the invention does not need to be matched with a diesel oxidation type catalyst, is low in precious metal consumption, good in active regeneration performance, high in aging resistance and high in particulate trapping efficiency, and can reduce the overall volume of a post-treatment device.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

The invention relates to full-dielectric adjustable optical tweezers based on a composite phase superlens, and belongs to the technical field of optical tweezers. Two regulation modes of geometric phase and transmission phase are integrated into a dielectric metasurface periodic structure, and a circular lens surface is combined according to a specific mapping and arrangement mode. The super lens can excite two different output electric fields under the input of linearly polarized light due to the regulation and control of a composite phase, and the two electric fields can independently exist under the input of circularly polarized light with opposite chirality. Therefore, by adjusting the polarization type of the incident light source of the super lens, free switching of multiple optical capturing modes of particles in a field can be realized. Compared with the existing optical tweezers, the control mode can be flexibly adjusted on the premise that the structure of the device is not changed, and more diversified particle capturing requirements can be met. The high-flexibility and easy-to-integrate micro-nano structure can provide powerful guarantee for the performance of a compact composite optical capturing device.

The invention discloses an unpowered air purification device based on electrostatic adsorption and negative ion effects, and relates to the technical field of air purification, the unpowered air purification device comprises a ventilation pipeline, an electrostatic adsorption module, a particle capture net, a negative ion release module and the like, a wind scooper guides airflow to enter the electrostatic adsorption module, and a friction ball rubs with an electrode plate to enable the electrode plate to be electrified; particulate matters in the air are adsorbed, falling particulate matters are collected by a liquid collecting box, residual particulate matters are further intercepted by a particulate capturing net, the elastic design is convenient for shaking off and cleaning, and the negative ion release module accelerates the generation of negative ions and purifies the air by utilizing the solar thermal conversion and piezoelectric effect. Efficient air purification is achieved through a multi-stage purification structure, the functions of humidity adjustment, intelligent reminding and the like are achieved, the structure is simple, energy conservation and environment protection are achieved, the device can adapt to various scenes, and an innovative scheme is provided for solving the air pollution problem.

The present invention discloses a nanoparticle transport device, comprising a silica substrate, a droplet-shaped gold nanoarray, polarized light waves, and nanoparticles; the silica substrate serves as a substrate; the droplet-shaped gold nanoarray is disposed on the silica substrate and serves as a driving unit, interacting with the polarized light field to form an excited local electric field to capture and directionally transport nanoparticles; the polarized light wave is used to provide a light source, interacting with the droplet-shaped gold nanoarray to generate an evanescent field; the nanoparticles serve as the objects to be captured and transported; the droplet-shaped gold nanoarray includes a periodically arranged droplet-shaped plasma gold nanostructure, which is composed of a droplet-shaped tail and a circular body, and the transport direction of the nanoparticles forms a certain angle with the droplet-shaped tail. The present invention can achieve more stable capture with lower light power, and also enables the device to achieve highly operational transport of target particles.

The invention relates to a magnetic medium box device and method for analyzing a high-gradient magnetic separation capture mechanism, and belongs to the technical field of high-gradient magnetic separation process mechanism research. The magnetic medium box device comprises a cooling chamber and a magnetic medium stack, the magnetic medium stack is formed by vertically stacking a plurality of freely detachable magnetic medium units, the cooling chamber is a hollow annular cavity, and a liquid nitrogen inlet and a liquid nitrogen outlet are formed in the top of the cooling chamber. When the magnetic medium box device is used for analyzing a high-gradient magnetic separation capturing mechanism, firstly, a plurality of magnetic medium rods and positioning pieces on the two sides of the magnetic medium rods form magnetic medium units, and after a plurality of magnetic medium units are placed into an inner ring space of a cooling chamber, the magnetic medium box device is assembled; putting the magnetic medium box device into a high-gradient magnetic separator, starting a magnetic separation test, after the test is finished, keeping a magnetic field unchanged, introducing a proper amount of liquid nitrogen into the cooling chamber through a liquid nitrogen inlet, disconnecting the magnetic field after particles captured on the surface of the magnetic medium are completely frozen, taking out the magnetic medium box device, and sequentially disassembling the magnetic medium units, and the particles captured on each magnetic medium rod are independently washed with clear water, collected, detected and analyzed. By means of the indirect heat transfer effect of the liquid nitrogen cooling chamber, rapid freezing and accurate collection of particles on the magnetic medium are achieved, and the device and method which are easy to operate are provided for high-gradient magnetic separation capture mechanism analysis experiments.

The invention discloses a method for generating a staggered superposition double-layer Airy light beam array capable of realizing double focusing, and belongs to the technical field of structured light regulation and control and special light beam generation. Aiming at the problems that the focusing characteristics of light beam arrays in transmission in different superposition modes are difficult to fully reveal in the prior art and the generation of an optical bottle depends on complex phase modulation or multiple optical elements, the method comprises the following steps: constructing a first layer of Airy light beam array and setting regulation and control parameters, constructing a second layer of Airy light beam array with staggered azimuth angles and setting regulation and control parameters, and constructing a second layer of Airy light beam array with staggered azimuth angles; a longitudinal double-focusing structure is realized through staggered superposition of double-layer Airy light beam arrays, and a vortex phase is introduced into double-focusing array light beams to form an optical bottle structure. According to the invention, the structure is simple, the longitudinal double-focusing and optical bottle structure can be realized only through the initial light field structure design, the focusing intensity and the regulation freedom degree are high, and the application of the light beam in the related fields of microscopic imaging, particle capture and the like is expanded.

The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.

A camera module with sticky epoxy and method for dislodging particles from a corresponding IR filter. Particles, formed during manufacture or use of the camera, may accumulate in the camera (e.g., on an infrared filter) causing blemishes in camera images. A sticky epoxy with characteristics for attracting and capturing particles is located in the camera. The epoxy may be located in a gap between a substrate and an outside edge of an infrared filter coupled to the substrate. The epoxy and the gap may surround the infrared filter and the epoxy may also be located on other surfaces of the camera. A process for loosening particles from the infrared filter includes driving an actuator that moves the substrate / infrared filter assembly (perhaps striking a base assembly) to loosen the particles from the infrared filter such that the particles are moved to, and trapped by, the epoxy.

The invention relates to an optical fiber optical tweezers probe for multi-particle capture, a preparation method and application. The optical fiber optical tweezer probe comprises a single single-mode optical fiber, one end of the single single-mode optical fiber is a cone-like end, and a black porous carbon-based thermoplastic polyurethane polymer is attached to the surface of the end portion of the cone-like end. The optical fiber optical tweezers probe is manufactured according to the following path: one end of a single single-mode optical fiber is sequentially twisted and subjected to electrode discharge; twisting the other end of the single single-mode optical fiber, placing a thermoplastic polyurethane optical fiber coating in an exposed optical fiber twisting area, and performing tapering treatment, so that the other end of the single single-mode optical fiber is provided with a black porous conical transition area with carbon-based thermoplastic polyurethane polymerization after the treatment. By applying the scheme, when the optical fiber optical tweezers probe is prepared, other additional optical elements and additional experimental materials are not inserted, and low-cost and high-efficiency particle aggregation capture based on the single-mode optical fiber can be realized.

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 relates to the technical field of magnetic separation, in particular to a roasting activation magnetic separation combined iron removal system which comprises a pretreatment module, a magnetic characteristic dynamic detection module, a magnetic field parameter self-adaptive matching module, a dynamic magnetic compensation module, a separation path optimization module and a cross-module cooperative control module. The sorting process is rehearsed through a virtual twinborn model, parameters are triggered to be reset synchronously, and particle agglomeration interference is restrained in combination with dynamic partition of a sorting cavity and a flexible electrode array. The modules achieve magnetic field dynamic adaptation, magnetic attenuation compensation and sorting path optimization through closed-loop cooperation, the problem that a static magnetic field is mismatched with non-uniform magnetic particles is effectively solved, and the medium magnetic particle capture efficiency, the iron element recovery rate and the concentrate grade are remarkably improved.

The present invention provides a method and device for simulating wind erosion at a construction site, the method comprising the following steps: Step 1: Collect 0-5 cm surface soil samples of the riverside slope to be studied using a base with a detachable baffle on one side; Step 2: Combine a cover with an adjustable baffle with a base filled with topsoil to form an airtight space; Step 3: Connect an adjustable-speed blower to the cover to ensure airtightness at the interface, adjust the wind speed to a preset value, and simulate the normal wind speed of the research point; Step 4: Install a particle capture device at the opening on the opposite side of the cover connected to the blower to receive particles generated by wind erosion, and complete the measurement of wind erosion amount and particle size composition. This method fills the data gap caused by the incomplete collection of wind erosion products by the existing wind erosion monitoring method. The technical solution of the adjustable wind speed and slope windward angle of the present application has the technical effect of restoring the current and simulating the acquisition of wind erosion parameters under different degrees of future climate change conditions.

The invention relates to an optical assembly (4) for a semiconductor lithography system, in particular for a projection exposure system, comprising: at least one housing (32, 32') with an interior (33, 33'), and at least one optical component (19, 20, 21) having a surface (19a, 20a, 21a) facing the interior (33, 33'). The optical assembly (3) has at least one porous particle trapping structure (29, 29') arranged on an inner surface (34a, 34a') of a wall (34, 34') of the housing (32, 32') or incorporated in the wall of the housing for trapping contaminating particles (24a, 24b) present in the interior (33, 33'). The invention also relates to a semiconductor lithography system, in particular a projection exposure system, comprising at least one such optical assembly (4).

The utility model provides a kind of optical fiber optical tweezers fluorescence lifetime detection equipment, by the light beam emitted by light source is divided into two ways, using the first optical fiber coupler to the two-way light signal received is coupled, and the light signal after coupling is transmitted to the optical fiber circulator connected, transmission to displacement control assembly by optical fiber circulator. Displacement control assembly utilizes one-way light signal to carry out target micro-particle capture, utilizes another light beam corresponding light signal to excite target micro-particle to generate excitation fluorescence signal, utilizes detection assembly to carry out photon number detection to excitation fluorescence signal, determines the fluorescence lifetime of target micro-particle. The utility model equipment can be realized in flexible control micro-particle, and the fluorescence lifetime of micro-particle is detected, and the utility model is more simple and efficient, applicable to precision large instrument to carry out ultrafast signal detection.

The utility model relates to the field of semiconductor film coating, in particular to a cold well type particle trap applied to a film coating process, which comprises a cavity, the top of the cavity is connected with an upper cover through a screw, the top of the upper cover is provided with a cooling mechanism, the cooling mechanism comprises a water-cooling buried pipe, the water-cooling buried pipe is embedded in the upper cover, and the water-cooling buried pipe is connected with the upper cover through a screw. One end of the water-cooling buried pipe communicates with a water inlet pipe. The electric heating pipe is arranged and used for heating process gas entering the cavity, particles in the gas are conveniently captured, the water-cooling buried pipe, the water inlet pipe, the quick-insertion type cooling pipe connector and the water outlet pipe are arranged and can communicate with external water supply equipment, cooling water is conveyed into the water-cooling buried pipe, and the bottom of the upper cover is cooled; process gas flows through the interior of the cavity through the gas inlet pipe, and trapped particles are quickly settled and condensed on the surfaces of the upper flow guide fins through high-temperature reaction and temperature difference brought by the cooling mechanism of the upper cover part.

A correction and capture method for a biological particle capture device includes: providing an image observation unit facing a side of a carrier platform on an observation platform and orientating a view region of the image observation unit towards a carrier region of the carrier platform for taking images; performing a fixed point displacement on the observation platform by the image observation unit based on several observation basic coordinates on an observation platform coordinate system and defining a correction point in an image of the view region when the image observation unit is positioned at one observation basic coordinate and take the image; controlling a capture portion of the particle capture tool to enter the image of the view region; adjusting the capture portion to align with the correction point and recording a capture correction coordinate by the terminal device.

Waste sorting device for sorting plastic waste particles, e.g. plastic flakes, in a particle stream based on a characteristic of the waste particles, comprising: - a sensor for determining a characteristic of waste particles in the particle stream; - a particle ejector downstream from the sensor relative to the particle stream for ejecting waste particles from the particle stream based on the determined characteristic; and - a vibratory feeder upstream from the sensor configured to provide a vibratory energy to the particle stream to feed the particle stream to the sensor via a particle guide, wherein the particle guide is provided between the vibratory feeder and the particle ejector, characterized in, that the waste sorting device further comprises a particle catcher arranged for catching particles that bounce from the particle guide and pass through a catching region, wherein the catching region is separated from the particle guide by a catching distance in a direction perpendicular to the particle stream, wherein the particle catcher is provided upstream from the sensor.

The invention provides an electrochemical biosensor used for alpha-synuclein detection. The sensor comprises a magnetic particle capture probe coated by a monoclonal antibody, a SiO2 nanoparticle signal probe for detecting antibody modification and a nano porous membrane loaded glassy carbon electrode modified by graphene. During detection, alpha-synuclein is specifically combined with the monoclonal antibody-coated magnetic particle capture probe and the detection antibody-modified cadmium-doped SiO2 nanoparticle signal probe to form a compound with a sandwich structure, the compound is directly precipitated in an external magnetic field, uncombined substances are removed through cleaning, and the detection sensitivity is high. And then re-dispersing the precipitate (compound) in the electrolyte, and immersing the glassy carbon electrode loaded by the graphene-modified nano porous membrane. After electrification, the cadmium ions in the compound are subjected to redox reaction to generate a current signal, and the current intensity of the current signal is in direct proportion to the content of alpha-synuclein. The sensor has the advantages of simplicity in operation, rapidness in detection, high sensitivity, high specificity and the like.

The invention relates to a small hybrid coagulated particle counter and a working method thereof. The condensed particle counter comprises a particulate matter adjusting unit, a hot steam saturation unit, a particulate matter and steam mixing unit, a particulate matter growth unit, an optical detection unit and a signal processing and control unit. To-be-detected ultrafine particles pass through the particle adjusting unit for adjusting the flow rate and reducing the temperature, are fully mixed with alcohol steam flowing into the hot steam saturation unit in the particle and steam mixing unit, and then absorb moisture in the particle growth unit to increase to an optically detectable size; and the measured diameter of the particulate matter is converted into an optical pulse signal by the optical detection unit, so that the number concentration of the to-be-measured ultrafine particulate matter is obtained. The device has the advantages of fast and sufficient mixing speed of particulate matters and hot steam, small particulate matter loss and the like, and has good performance in the aspects of dynamic detection, high-flow-speed operation and extremely-small-particle-size particulate matter capture while reducing the equipment volume and realizing portability.

This invention provides a wind erosion monitoring system and method based on distributed optical fiber, belonging to the field of optical-based wind and sand monitoring technology. It includes: constructing a wind erosion monitoring system comprising a linearly tunable laser, an optical isolator, a first coupler, an upper branch, a lower branch, a sand particle capture sensor, a photoelectric detection and acquisition module, and a host computer; utilizing the Rayleigh scattering signal of the linearly swept laser in the sensing optical fiber and the interference with a reference light, the vibration information distributed along the optical fiber is obtained by demodulating the beat frequency signal; combining the constructed sand particle impact and optical fiber coupling model, the dynamic strain generated by sand particle impact is converted into phase changes, realizing the acquisition of sand particle impact location, sand particle size, and sand particle quantity. This invention enables continuous distributed monitoring of wind and sand flows with high spatial resolution, and has advantages such as resistance to electromagnetic interference, strong environmental adaptability, and multi-parameter sensing, and can operate stably for a long time in harsh desert environments.

The invention relates to the technical field of hermetia illucens, and discloses hermetia illucens breeding filtering equipment which comprises a spraying shell, an air inlet pump is arranged on one side wall of the spraying shell, the air outlet end of the air inlet pump communicates with the interior of the spraying shell through an air inlet pipe, a first transition pipe is vertically arranged at the top of the spraying shell, and a second transition pipe is arranged at the bottom of the spraying shell. The top end of the first transition pipe is provided with a horizontally-arranged second transition pipe through a connecting bent pipe, and the bottom of the second transition pipe communicates with a plurality of purification cylinders through connecting pipes. And odor and harmful gases generated in the breeding process of the hermetia illucens are effectively purified step by step. In the spraying shell, gas is subjected to preliminary filtration, spray atomization and multi-layer filtration, and harmful components such as ammonia gas, hydrogen sulfide and sulfur dioxide and suspended particles in the gas are removed through efficient physical adsorption, chemical reaction and particle capture.

The utility model provides an air purification and humidification filter element assembly, an air humidification purifier and an air conditioner, relates to the technical field of air purifiers, and solves the problem that a uniform water film cannot be formed by a water guide piece in the prior art. A mounting frame of the air humidification filter element assembly is provided with a filter air duct, and an air inlet and an air outlet which are communicated through the filter air duct; the solid wire is mounted on the mounting frame and located in the filtering air duct, and at least part of airflow entering the filtering air duct from the air inlet can be guided by the filtering air duct to bypass the solid wire and flow to the air outlet after making contact with the outer surface of the solid wire. When the air humidification filter element assembly is used, water can enter the surfaces of the solid wires from the water holes in the bottom of the water tank, and the water in the through holes can uniformly flow into the outer surfaces of the solid wires to form uniform water films as long as enough water is guaranteed. And the water film on the outer surface of the solid wire can automatically take away the captured impurities such as particles, so that a self-cleaning effect is achieved, the use period of the solid wire filter element can be prolonged, and relatively good filtering efficiency can be kept for a long time.

The present application relates to a kind of vehicle body paint exhaust treatment tower spray circulating water tank, belong to industrial waste gas treatment equipment technical field.The device includes tower body, spray core shaft, drive ring seat, first suspension ring and second suspension ring, and the inside of tower body is equipped with processing cavity, and its upper and lower ends are equipped with shaft support, bottom is equipped with liquid collecting tank, and side wall is equipped with air inlet;Spray core shaft includes guide cone, guide cap, sub-guide ball and main shaft core, and circulating pump is arranged in main shaft core, and spray core shaft surface is provided with spray hole;Multiple drive ring seats are respectively corresponding to control multiple suspension rings, and its surface is equipped with magnetic yoke coil and exciter, and the permanent magnet block of drive suspension ring outer periphery realizes magnetic suspension rotation.The present application is by spray-magnetic suspension disturbance-flow channel trapping coupling mechanism, so that water and waste gas are fully contacted, agitated and dispersed in processing cavity, while extending waste gas residence time, improve particle capture efficiency and purification capacity, applicable to high concentration workshop waste gas treatment scene.

A particle separation device according to an embodiment comprises a storage unit, a filter, and a microchannel. The storage part stores a suspension containing target particles and non-target particles smaller than the target particles. The filter captures the target particles from the suspension and allows the non-target particles to pass. The microchannel separates the target particles from the suspension. The particle separation device sends the suspension stored in the storage unit to the filter and sends the suspension containing the target particles captured by the filter to the microchannel.

Embodiments relate to a biosensor. The biosensor includes an electrochemical system having a generator electrode, a collector electrode, and electrolyte. The generator electrode includes a particle capture region having an aspect ratio that is greater than 1. The particle capture region is a portion of the generator electrode configured to attract a particle supported within the electrolyte. The electrochemical system is operated so as to bias one of the generator electrode or the collector electrode below its formal potential while biasing the other electrode above its formal potential. The biosensor includes a processing module configured to measure electric current generated by the electrochemical system.

A correction and capture method for a biological particle capture device includes: disposing a first image correction unit and at least one second image correction unit on a carrier platform to take images, wherein a first magnification ratio of the first image correction unit is less than a second magnification ratio of the at least one second image correction unit, and an image-capture region of the first image correction unit overlaps with an image-capture region of the at least one second image correction unit; controlling a particle capture tool to move relative to the first image correction unit and the at least one second image correction unit and driving a capture portion of the particle capture tool to enter the image-capture region of the first image correction unit and the image-capture region of the at least one second image correction unit.

A correction and capture method for a biological particle capture device includes: providing an image observation unit facing a side of a carrier platform on an observation platform and orientating a view region of the image observation unit towards a carrier region of the carrier platform for taking images; performing a fixed point displacement on the observation platform by the image observation unit based on several observation basic coordinates on an observation platform coordinate system and defining a correction point in an image of the view region when the image observation unit is positioned at one observation basic coordinate and take the image; controlling a capture portion of a particle capture tool to enter the image of the view region; when the image observation unit discovers a particle in the carrier region of a carrier, a terminal device uses a specific conditional formula to obtain a relative capture coordinate for correspondingly moving the particle capture tool to a position of the particle.