281 results about "Sample plane" patented technology

The invention discloses a helium detection device and method for the airtightness of a bonding interface and a bonding microcavity, and belongs to the field of the airtightness of MEMS devices. The device comprises a sample holder, a mass spectrometer, a molecular pump, a mechanical pump and other components, helium is used as detection gas, and the helium is leaked only through a bonding interface through a customized and processed test sample and sample holder structure, so that the interference of other leaks in a non-bonding area on a test result is avoided. The testing method comprises the steps of sample introduction, vacuum pumping, helium filling, signal detection, dynamic and steady state testing and the like, the helium leak rate is monitored in real time by combining with a helium mass spectrometer, and the minimum leak detection rate is that high-sensitivity air tightness detection is ensured. According to the method, the airtightness of the bonding interface can be independently evaluated, and a reliable basis is provided for development of a novel bonding process. The method is suitable for air tightness detection and evaluation of the bonding process in MEMS device processing and manufacturing.

The invention relates to a method for illuminating a sample plane (17) with wide-field illumination and comprises the steps of providing an illumination beam; guiding the illumination beam along an illumination beam path (3); focusing the illumination beam into an objective pupil (13) of an illumination objective (10) and generating an illumination pattern of wide-field illumination in the sample plane (17), wherein at least one optical element of the illumination beam path is moved in order to repeatedly change the formation of the illumination pattern in the sample plane (17) for the purpose of homogenizing the wide-field illumination.The invention is characterized in that a first scanner (7) is used as an optical element for generating different configurations of the illumination pattern, and the first scanner (7) oscillates in at least one direction around a set position in order to repeatedly change the location or illumination angle of the illumination pattern in the sample plane (17) for the purpose of homogenization. The invention also relates to a device for illuminating a sample plane (17) with wide-field illumination and a microscope (1).

The invention discloses a confocal full-Mueller matrix imaging device and method based on an optical fiber metasurface array, and belongs to the technical field of polarized optical imaging. The device comprises an optical fiber array multi-polarization illumination module, a sample scanning module, a scattered light transmission module, a metasurface array polarization modulation module and a polarized light intensity detection module. The polarization states of four beams of light are regulated and controlled through the optical fiber polarization controller, and four illumination focal spots in different polarization states are generated on a sample plane at the same time; sample scattered light is modulated by a polarization measurement metasurface array comprising four independent metasurface units, and the polarization state of each path of optical signals is projected to sixteen polarized light spots which are spatially separated; and finally, acquiring light spot intensity information by an area array detector, and reconstructing a full-Mueller matrix image of the sample through calculation. According to the invention, full-Mueller matrix information can be obtained through single scanning, and the device has the characteristics of high resolution, compact structure, good compatibility and the like, and can be used for multi-dimensional polarization microscopic analysis of samples.

The utility model discloses a wear resistance testing device for protective gloves, which comprises a test board, a test frame and a sample frame, the test frame and the sample frame are respectively and vertically mounted on two sides of the test board, the bottom of the test frame is mounted on the test board through a first adjusting component in a front-back sliding manner, and a grinding wheel is arranged in the test frame in a lifting manner. The bottom of the sample frame is installed on the test bench in a left-right sliding mode through a second adjusting assembly, a hand mold is rotatably installed on the sample frame through a third adjusting assembly, the surface of the hand mold is covered with an air inflation film layer, and the outer side of the air inflation film layer is sleeved with a protective glove. The device has the advantages that comprehensive wear resistance detection can be carried out on all positions of the protective glove, including the finger face, the first web, the palm and the back of the hand.

The utility model relates to the technical field of testing, in particular to a differential scanning calorimeter which comprises a differential scanning calorimeter, a heating assembly, a display screen and ground feet, the display screen is arranged on one side of the front face of the differential scanning calorimeter, and the ground feet are connected to the positions, close to the four corners, of the lower end of the differential scanning calorimeter. One side, far away from the display screen, of the upper end of the differential scanning calorimeter is connected with a heating assembly, and the heating assembly is composed of a heat insulation cover, a heat insulation sleeve, a handle, a first inner cover, a second inner cover, an inner furnace, an outer furnace, a heat insulation tank, a sealing ring, a heating ring, a sample holder, a soaking block, a sample box and a temperature difference sensor.

There is provided a microscopy device capable of (i) moving a liquid immersion objective lens to a location where liquid, such as an oil or water, can be applied to the liquid immersion objective lens, and (ii) moving the liquid immersion objective lens having liquid applied thereto to a sample holder, to be used to acquire images of a sample. The liquid application process can be automated so that the liquid on the objective lens is replenished as necessary. The device can automatically focus the lens to facilitate scanning, and can be configured to change objective lenses. Other embodiments, including using such a device in high content / high throughput scanning, are also described.

The utility model discloses a bottom solution residue prevention sample holder for vertical tellurium-cadmium-mercury liquid-phase epitaxial growth, which belongs to the field of infrared semiconductor material preparation and comprises a conical flow guide base, a micro-groove array, a SiC / SiO2 super-lyophobic functional layer and a thermal gradient regulation and control module. During working, the frame body is preheated, the melt flows back along the chamfer surface under the action of gravity during lifting, the micro-grooves generate capillary force for directional diversion, the super-lyophobic layer reduces the adhesion work, and the thermal gradient inhibits solution solidification. By applying the sample holder, the residual quantity of a melt can be greatly reduced, the defect density of an epitaxial layer is reduced, the available area is increased to more than 95%, and the problem of millimeter-scale particle residue in the traditional LPE growth is solved.

The application discloses an X-ray diffractometer high-temperature in-situ detection device, a base lifting assembly is installed on the diffractometer, a tank body assembly rear end is connected with a lifting pad in the base lifting assembly, and a tank body assembly front end is connected with an upper cover in a tank body cover assembly; a heat preservation cavity assembly is arranged in the tank body assembly; a heating chamber assembly is arranged in the heat preservation cavity assembly, and a connecting pipe at a tail of the heating chamber assembly is connected with a gas distribution connector in the tank body cover assembly; sample entering holes for sample passing are arranged at lower ends of the tank body assembly and the heat preservation cavity assembly; the tank body and the tank body cover are provided with cooling water channels; a sample holder assembly is fixed at the tank body assembly lower end, and a measured sample is placed in a sample holder in the sample holder assembly and is sent into the heating chamber assembly; the application has novel structure, stable performance and convenient use, and greatly improves the temperature range of the heating chamber. Since the heat preservation cavity is in a sealed form, the heating speed is fast, and heat preservation is long-lasting.

The utility model provides an automatic vertical wicking height tester, which is used for measuring the water absorption capacity of a fabric, and comprises a sample holder, a carrying mechanism, a test water tank and an industrial camera, the provided automatic vertical wicking height tester is in sliding connection with the sample holder through the carrying mechanism; the fabric sample can be automatically driven to move between the sample rack and the test water tank. Therefore, the fabric sample does not need to be manually placed or taken down, the operation is automatically completed by the carrying mechanism, and the industrial camera accurately records and analyzes the water absorption condition of the fabric sample, so that errors possibly caused by manual observation and classification are avoided, manual intervention is remarkably reduced, and the automation level of testing is improved.

This application relates to the field of analytical chemistry detection technology, and in particular to a sample rack for a liquid chromatography-mass spectrometry (LC-MS) instrument used for TDM detection. The rack includes a support mechanism with a sample placement box at the top and a heat-insulating mechanism at the top. The invention utilizes components such as a pull-out plate, a spare support plate, and a table. The sliding engagement between the pull-out plate and the table allows for convenient horizontal sliding of the pull-out plate to retrieve and place samples placed in a first positioning slot. Simultaneously, the spare support plate is fixedly connected to a support side plate, enabling the categorized storage of samples after testing. These components work together to form an orderly sample management system, achieving the modular, partitioned design that efficiently distinguishes and quickly retrieves samples in different testing states, significantly improving the convenience and standardization of experimental operations.

A system and method for detecting movement of a sample subjected to a polishing operation in a vibratory polisher is disclosed. The system includes a sample holder for securing a sample to be polished. A housing supports a platen on which the sample holder is disposed. The platen allows movement of the sample holder during the polishing operation as the sample holder traverses a polishing fluid dispensed around the platen. One or more sensors are disposed around the housing and operable to monitor movement of the sample holder on the platen relative to the housing.

The invention provides a sample table for a table type X-ray diffractometer, and relates to the field of diffractometers, the sample table comprises a sample rack, a sample table structure is inserted in the sample rack, the sample rack is provided with a lifting locking part used for limiting the sample table structure, the lifting locking part comprises a first T-shaped tube mounted at the bottom of the sample rack, and the first T-shaped tube is provided with a second T-shaped tube; a second T-shaped pipe is inserted into the bottom end of the first T-shaped pipe, a second T-shaped rod is connected to the second T-shaped pipe in a penetrating mode, a first T-shaped rod is connected to the top end of the second T-shaped rod, the top of the first T-shaped rod penetrates through the sample frame and extends into the sample frame, and the top of the first T-shaped rod makes contact with the bottom of the sample table structure. According to the sample table structure, the lifting locking part is arranged, the lifting locking part can complete locking of the sample table structure in a mode of rotating after lifting, the lifting locking part can complete unlocking action by moving downwards and resetting after rotating, operation is convenient and fast, use is facilitated, and the abrasion problem of traditional screw adjustment is avoided.

A microscope is disclosed for imaging a sample. The microscope includes an illumination objective, a further illumination objective, an imaging objective and a further imaging objective, a sample holder, holder support and a drive system arranged to displace the sample holder along three perpendicular axes.

Systems and methods for automated cap removal with an autosampler system are described. In an aspect, an autosampler system includes, but is not limited to, a sample rack; a sample vessel stabilizer configured to transition the sample rack between a load / unload state and a lock state; an uncapper supported by a first z-axis support; and a sample probe supported by a second z-axis support, wherein the uncapper is configured to remove a cap from a sample vessel held by the sample rack when the sample rack is in the lock state, and wherein the uncapper is configured to change the position of the removed cap to permit access to an interior of the sample vessel by the sample probe without removing the sample vessel from the sample rack.

A system including a processor and a memory having instructions that, when executed by the processor, cause the system to obtain a point cloud of a turbine blade, the point cloud comprising data points corresponding to locations on an external contour of the turbine blade, generate an external mesh for the turbine blade based on the point cloud, define a reference axis along a length of the turbine blade, generate sampling planes along a length of the reference axis, each sampling plane being normal to the reference axis and having a shape defined by those portions of the external mesh intersecting the sampling plane, match each sampling plane to an airfoil profile in a database of known airfoil profiles, and create a geometrical representation of the turbine blade by placing the airfoil profiles on the reference axis and connecting the perimeter of each of the airfoil profiles.

The invention discloses an angle continuously adjustable super-resolution microscope illumination device and method. The device comprises a light beam coupling assembly; an LED-DMD excitation light path and a digital micromirror array perform intensity modulation on Kohler illumination light according to a loaded intensity distribution reference pattern, a first light beam is reflected, and the first light beam is projected to a sample plane through a light beam coupling assembly and a conjugate light path in sequence; an SLM-Laser excitation / light control light path, a spatial light modulator performs phase modulation on parallel light according to a loaded phase distribution reference pattern to generate a second light beam, and the second light beam is coupled with the first light beam through a light beam coupling assembly and then is projected to a sample plane; the excitation mode switching module is used for switching a conjugate surface to realize TIRF illumination or spot scanning excitation; the control system realizes seamless switching between a preset light control imaging mode and a real-time light control imaging mode. The problems that a traditional super-resolution microscope is single in function, high in phototoxicity, poor in adaptability and the like are solved, and a more powerful imaging platform can be provided for biomedical research.

The invention discloses a high-beam ion soft landing device based on a multistage difference technology, and belongs to the technical field of surface scientific sample preparation. The device comprises an electrospray ionization source, an ion transmission device, an ion deposition device and a sample transfer device which are connected in sequence. The ionization source couples high voltage to the solution through the spray needle fixing mechanism integrating the three-dimensional displacement table and the metal conductive connecting piece, and electrified micro-droplets are generated. The transmission device adopts a combination of a four-stage differential air exhaust cavity and a replaceable ion lens with a gradually increased aperture, so that efficient focusing and transmission of ions are realized, and desolvation is completed through a heating capillary tube. The deposition device drives a multi-clamping-groove vertical sample frame through a magnetic coupling sample transfer rod, and applies a deceleration electric field to a sample support by using an external bias power supply, so that ions are softly landed on a substrate with low kinetic energy. According to the invention, an expensive mass spectrum assembly is abandoned, and through linkage of all parts, high-flux and high-integrity clean deposition of macromolecules and heat-sensitive samples is realized while the cost is remarkably reduced.

The utility model provides a dismounting-free convertible solid sample holder device, which is characterized in that a rotating disc is rotatably connected to a base through a positioning locking column, a plurality of positioning holes are formed in the base, a steel ball is mounted at the lower end of the rotating disc, the periphery of the steel ball can be positioned and connected into one positioning hole, and a bottom plate and a shading plate are fixedly mounted on the rotating disc; a sample box is detachably installed on the bottom plate, through holes are formed in the two side walls of the shading plate respectively, and incident light irradiates a sample in the sample box through one through hole and is emitted out through the other through hole after being reflected by the sample. According to the dismounting-free convertible solid sample holder device, the base and the rotating disc are connected through the positioning locking column, so that the rotating disc can rotate relative to the base, the first pressure spring elastically tensions the relative position of the base and the rotating disc, and the relative position of a sample box mounted on the U-shaped bracket can be positioned through the matching of the steel ball and the positioning hole; the reversing function of the solid sample holder assembly is achieved under the disassembly-free and assembly-free condition.

The invention provides a linear scanning microscopic Raman spectrum imaging method and system, electronic equipment and a storage medium. The method comprises the following steps: obtaining Raman spectrums of the same sample in different directions; spectral feature maps are extracted from the Raman spectrums in different directions respectively; processing the spectral feature map to obtain reinforced features corresponding to different directions so as to make up that the spectral acquisition resolution in the line length direction is lower than the spectral acquisition resolution in the line width direction; and fusing the enhanced features to obtain a fused spectral feature map for qualitative or quantitative analysis. According to the invention, the uniformity of linear exciting light is improved by using a micro-cylindrical lens array or a DOE element, and an omnidirectional high-resolution spectral image in a sample plane is obtained by combining orthogonal double-frame sampling with an atlas fusion algorithm. The device is simple in structure and low in cost, linear exciting light energy spatial distribution uniformity and in-plane omnidirectional horizontal spatial resolution are improved, and a powerful tool is provided for rapid research of cell space metabolome.

A dynamic 3D light scattering particle size distribution measurement device includes a polarization splitter for generating an s laser beam with perpendicular polarization and a p laser beam with parallel polarization that travels parallel to and spaced apart from the s laser beam. A lens is used to focus the s laser beam and the p laser beam onto a common focus area inside a sample holder holding a sample whose particle size is to be measured. An s light intensity detector measures a time-resolved s light intensity from s backscattered light from the focus area. An s-polarisation filter allows perpendicularly polarized light to pass, resulting in s measuring light, and includes a light detector for time-resolved intensity measurements of the s measuring light. A p light intensity detector measures a time-resolved p light intensity detects p backscattered light from the focus area, and includes a p polarization filter that allows parallel polarized light to pass. A light detector provides for time-resolved intensity measurement of the p measuring light, and an evaluation unit automatically calculates the particle size distribution from the time-resolved p light intensity and the time-resolved s light intensity.

The present application relates to the technical field of liquid phase epitaxy growth of thin film materials, and particularly to a vertical liquid phase epitaxy graphite boat and a method for epitaxy using the same. The graphite boat comprises a sample holder, a stirring rod, a stirring base, and a crucible. The graphite boat can improve the uniformity of epitaxial materials, reduce surface defects, reduce the epitaxial composition and thickness difference caused by the inhomogeneity of the mother liquor, and avoid the melting of the surface layer of the substrate at high temperature in the mother liquor, which causes the change of the composition of the mother liquor. While ensuring the uniformity of the epitaxial thickness and composition, the epitaxial carbon contamination defects can be effectively reduced, and the batch yield can be effectively improved.

Techniques for measuring single synaptic signals under varying experimental conditions include controlling a video recording microscope to capture, at multiple different times, a first imaged area in a sample holder as a video frame when the sample holder is disposed on a stage and holds a sample of neuronal tissue combined with at least one fluorophore that emits a corresponding electromagnetic wavelength in a synapse during synaptic activity. At least one synaptic region of interest is determined based on a group of pixels in the first imaged area that record electromagnetic emissions from the fluorophore at the different times. An ordered time series of emission intensity is recorded in each of the synaptic region of interest. Peak emission intensity values in the time series are corrected for transmitter label transients. The ordered time series with corrected peak emission intensity values are stored in a data structure with a standard format.

The application discloses a confocal full Mueller matrix imaging device and method based on a fiber super surface array, and belongs to the technical field of polarized optical imaging. The device comprises a fiber array multi-polarization illumination module, a sample scanning module, a scattered light transmission module, a super surface array polarization modulation module and a polarized light intensity detection module. The polarization state of four beams of light is regulated by a fiber polarization controller, and four illumination focal spots with different polarization states are generated simultaneously on a sample plane. The sample scattered light is modulated by a polarization measurement super surface array comprising four independent super surface units, and the polarization state of each light signal is projected onto sixteen spatially separated polarized light spots. Finally, the light spot intensity information is collected by a surface array detector, and the full Mueller matrix image of the sample is reconstructed by calculation. The application realizes the acquisition of full Mueller matrix information in a single scan, has the characteristics of high resolution, compact structure and good compatibility, and can be used for multi-dimensional polarization microscopic analysis of samples.

The invention relates to an X-ray imaging apparatus (1) comprising: an X-ray source (2) generating an X-ray beam (F); a two-dimensional X-ray detector (3) comprising pixels (3a); a sample holder (4) configured to support a sample (E); at least one modulator (5), the at least one modulator (5) being a film on which a helical transmission modulation pattern is formed.

The application discloses a kind of multilayer sample pretreatment device and processing method, multilayer sample pretreatment device includes frame body, first shelf layer, second shelf layer and transfer unit, first shelf layer includes sequentially arranged several first warehouse storage sites, second shelf layer includes sequentially arranged code scanning position and several second warehouse storage sites, transfer unit is between code scanning position and second warehouse storage site, between first shelf layer and second shelf layer, second shelf layer and subsequent detection process, conveying unit between transfer sample frame.Sample pretreatment method, transfer unit preferentially transfers sample frame and test tube thereon between second shelf layer and subsequent detection process, recovery conveying unit.The application has reasonable structure, can adapt to large quantities of sample processing, conveying efficiency is high and degree of automation is high, and it is conducive to popularization and application.

The utility model relates to an arc-shaped sample rack compatible with sample tubes with different diameters, in particular to the technical field of medical instruments, which comprises a sample rack and a sample tube adapter, a plurality of mounting notches are arranged on the upper end face of the sample rack, and the sample tube adapter is used for mounting and limiting the sample tubes. A plurality of clamping jaws for limiting and guiding the sample tube are arranged in the sample tube adapter, a mounting reverse buckle is arranged on the sample tube adapter, and the sample tube adapter is connected with the sample rack through the mounting reverse buckle. According to the scheme, multiple groups of clamping jaws are matched, so that the sample tube adapter is compatible with multiple sample tubes, and meanwhile, the purposes that no gap exists between the sample tubes and the adapter, the sample tubes do not incline and the like can be achieved.

The utility model discloses an exposure device for an ozone in-vitro experiment. The exposure device comprises an experiment table, an exposure cabin and a contrast cabin, an extension plate is fixedly installed at the top end of the experiment table, electric telescopic rods are fixedly installed on the two sides of the extension plate in a penetrating mode, an upper cabin cover used for conducting attached sealing on openings in the upper ends of the exposure cabin and the contrast cabin is fixedly installed at the bottoms of the electric telescopic rods, and limiting sliding rods are fixedly installed on the two sides of the upper end of the upper cabin cover; an exhaust port is fixedly formed in the outer side of the upper cabin cover in a penetrating mode, an ozone catalytic decomposer used for decomposing ozone is fixedly installed on the rear side of the upper end of the experiment table, vertical limiting tables are fixedly installed on the inner sides of the exposure cabin and the contrast cabin, and the front ends of the vertical limiting tables are connected with sample frames in a magnetic attraction mode; a stainless steel grid for placing an experimental sample is fixedly mounted at the front end of the sample rack. The ozone contrast exposure experiment can be conveniently carried out through the exposure cabin and the contrast cabin, and the comparability of experiment conditions is ensured.