217 results about "Electronic microscopy" patented technology

Methods and apparatus for providing and processing serial tissue sections. In one example, an “automatic tape collecting lathe ultramicrotome” (ATLUM) slices a block of tissue sample having various geometries into a continuous ribbon of thin tissue, or multiple thin tissue sections, and disposes the sliced thin tissue on an appropriate substrate to facilitate subsequent imaging of the sliced thin tissue. Closed-loop control of section thickness of the sliced thin tissue sections or ribbons is implemented to produce thinner sliced tissue sections or ribbons and tightly regulate thickness. Thin tissue sections or ribbons may be particularly processed/prepared to facilitate imaging with a scanning electron microscope (SEM). Collected thin tissue sections or ribbons may be used to create UltraThin Section Libraries (UTSLs) that allow for fully automated, time-efficient imaging in the SEM to facilitate expansive tissue studies.

Provided is a thermoplastic resin structure formed of a resin composition that comprises substantially (a) from 5 to 80% by volume of a polyamide resin and (b) from 20 to 95% by volume of a polyphenylene sulfide resin, which is characterized in that, in morphology therein seen through electronic microscopy, the polyphenylene sulfide resin (b) forms a matrix phase (continuous phase) and the polyamide resin (a) forms a disperse phase. The gives plastic containers, tubes and their Attached parts having good barrier properties, strength, durability and workability.

The invention relates to a non-contact ground stress testing device and method based on drilling microscopy digital photography and belongs to ground stress measuring device and method of geotechnical engineering. The device comprises an electronic microscopy camera, a signal processing and control module, a signal transmission module, a gyroscope, a signal collecting module, a portable power source and a device shell. The method includes: fixing the testing device in a device mounting hole, using the electronic microscopy camera to collect the hole wall digital images of the hole during a whole stress relieving process, selecting the representative images before and after the stress relieving, acquiring sub-pixel images through image interpolation, optimizing sub-pixel image analyzing areas and points, setting analyzing traces, calculating to obtain strain values, and calculating the ground stress values and the azimuth angles thereof by the hole partial wall surface stress relieving method theory. The non-contact ground stress testing device and method has the advantages that simple operation and high adaptability are achieved, testing precision can reach one micro strain, strain measuring mark points and analyzing traces are optimized, influence of temperature, rock viscosity and electromagnetic interference is avoided, a probe can be reused, and low cost is achieved.

The invention provides a transmission electronic microscope sample stage connector utilized for property measurement, a substrate for complement use and a production method of the substrate. The invention has the advantages of producing a general TEM sample stage connector by precise mechanical processing and integral semi-conduct process flow, and combining the representing performance of the TEM on the micro structure of the materials and the measuring performance of the material property with the substrate as the carrier. After the substrate finishes the micro structure representation of the TEM, the substrate is taken out and put into any property measuring device which is compatible with the substrate for measuring the mechanics, electronics, optics, thermology, acoustics properties of the materials; meanwhile, a corner of the slit is taken as a mark, thereby guaranteeing the structure representation and the property measurement of the TEM are in the same micro area, which thus can really associate the material micro structure with the properties. In addition, the property measurement can be performed prior to the TEM structure representation.

The invention discloses a collector of super capacitor and the surface processing method, which is characterized in that a collector body film can be an aluminum film, a copper foil, a foam nickel film, a stainless steel film or punching nickel film; the purity of aluminum is over 99.9%; the thickness of the corrosion aluminum foil is 15 to 50 Mum; the roughness is 1.5 to 3.0 Mum; the collector body is spongy under 20000X electronic microscope; the average diameter of the corrosion hole is 0.05 to 0.2 Mum; 5 to 10 billion holes are arranged in the area of 1 cm2; the tensile strength is 1.0 to3.0 kg/cm. The invention has the advantages that chromic acid mixture is adopted for chemical treatment for the surface of the current collector; dust on the surface of aluminum foil of the current collector during storage and transportation can be removed; anti-septic oil and anti-sticking agent on the aluminum foil during machining process are also effectively removed; active functional groups are added, enabling even and consistent distribution of coated electrode material; the adhesion strength of the electrode film is improved; internal resistance of the electrode is reduced, the specificsurface area is increased; the collector is applicable to large scale production.

A manufacturing method of measuring key size of scanning electronic microscope (CDSEM) calibration sample includes pre-cleanout of silicon underlay, forming underlay oxidizing layer, accumulating multi crystal silicon layer, forming photosensitive resist pattern, forming gate structure, forming a conducting layer. Gate structure sample gained restrains the aggradation of hydrocarbon induced by cumulation of surface charge for the abreaction effect of conducting layer, so the phenomenon of overloading of CD grown is eliminated to make service life of the calibration sample prolong apparently and guarantee the reliability of test of CDSEM.

A process for the transformation of carbon nanotubes (CNTs) to nanoribbons composed of a few layers of graphene by a two-step electrochemical approach is disclosed in this invention. This consists of the oxidation of CNTs at controlled potential, followed by reduction to form graphene nanoribbons (GNRs) having smooth edges and fewer defects, as evidenced by multiple characterization techniques, including Raman spectroscopy, atomic force micro-scopy, and transmission electron microscopy. This type of ‘unzipping” of CNTs (single-walled, multi-walled) in the presence of an interfacial electric field provides unique advantages with respect to the orientation of CNTs, which might make possible the production of GNRs with controlled widths and fewer defects. The extent of oxidation was confirmed by various characterization techniques like XRD, XPS and Raman spectroscopy. In the second step of experiments, the CNT oxide were reduced for different periods such as 4, 8, 12 hours at fixed negative potentials of −0.5 V, so as to get layers of graphene ribbons as tabulated herein.

The invention discloses a chemical nickel plating solution for a flexible printed circuit board and a plating construction method thereof. The chemical nickel plating solution for the flexible printed circuit board is characterized in that according to the formula of the nickel plating solution, each liter of the nickel plating solution comprises 20-30 grams of soluble nickel salt, 20-40 grams of a reducing agent, 20-50 grams of fatty carboxylic acid and/or a substituted derivative, 5-15 grams of a buffering agent and 0.5-10.0 grams of ethanediamine and/or a condensation compound thereof, and contains 0.01-10.0 ppm of a sulfocompound. A cylindrical nickel additive and an accelerator are added into the chemical nickel plating solution, the chemical nickel plating solution is plated on the surface of the FPC, a gold layer is deposited by a chemical gold plating solution in a follow-up procedure, after gold in the gold layer is removed by a gold removing agent, a nickel alloy layer is free of cracks under the observation of an electronic microscope, and a flexible nickel alloy layer is obtained. The nickel plating solution provided by the invention improves the flexibility and the corrosion resistance of the nickel alloy layer.

A method of preparing a transmission electron microscopy (TEM) sample from a semiconductor structure may include milling a region of the semiconductor structure with a focused ion beam and generating the transmission electron microscopy (TEM) sample. The focused ion beam providing the milling may include a rotation angle relative to the crystallographic axis of the semiconductor structure. A transmission electron microscopy image of a cross-sectional plane of the generated transmission electron microscopy (TEM) sample may be generated using a transmission electron microscope, whereby the transmission electron microscopy image of the cross-sectional plane includes an image projection-free region based on the rotation angle.

The invention relates to fluorosiloxane-POSS acrylate block copolymers, a blood-compatible coating thereof and a preparation method of the fluorosiloxane-POSS acrylate block copolymers, and belongs to the fields of fluorosilicone copolymer preparation and biomedical polymers. The blood-compatible coating prepared from the fluorosiloxane-POSS acrylate block copolymers has good hydrophobicity, a static contact angle with water of more than 107 degrees, and an improved anticoagulation time compared with polyvinyl chloride surfaces. Adhesive platelet adhesion and aggregation states are observed under a scanning electron microscope. Compared to a bank PVC surface, surface adhesive platelets of the surface after being coated are obviously reduced above 85%, the surface adhesive platelets are distortionless largely, and blood compatibility is good. The preparation process of the blood-compatible coating is simple with easily available raw materials, is prone to industrialization and large-scale production, and has high practical value. The fluorosiloxane-POSS acrylate block copolymers are shown as the formula 1 and the formula 2. The formula 1 and the formula 2 are shown in the description.

Provided is a toner including toner particles, each of which contains a binder resin, a colorant, a releasing agent and a crystalline polyester, wherein in an observation of a cross-section each of the toner particles by transmission electron microscopy, specific toner particles each of which has domains of the crystalline polyester and domains of the releasing agent, are present at a ratio of at least 70% by number of the toner particles in the toner, an arithmetic mean of maximum diameters of the domains of the releasing agent is within prescribed range, and the specific toner particles satisfy prescribed conditions.

The invention discloses an indoor evaluation method for a nano-plugging agent for shale gas water-based drilling fluid. The indoor evaluation method comprises the following steps that (1) a ultra-lowpermeability stratum 'simulation core' is prepared, and the nano-plugging agent permeability reduction rate is determined; (2) particle size analysis is conducted on the nano-plugging agent; and (3) micro morphology is analyzed, specifically, firstly, the ultra-low permeability 'simulation core' (the permeability reaches 10<-4>mD) with nano and micron scale apertures is prepared successfully, thenthe permeability reduction rate of the 'simulation core' after the nano-plugging agent is added is obtained through determination of high temperature and high pressure filtration loss, the plugging performance of the nano-plugging agent is investigated, whether the size fraction magnitude of the nano-plugging agent is matched with the size of the micron and nano scale apertures or not is analyzedthrough a laser particle analyzer, finally, the micro morphology of a filter cake and filter liquor before and after the nano-plugging agent is added is observed through an environmental scanning electron microscope, the dispersion stability of the nano-plugging agent in a system is verified, and the plugging mechanism of the nano-plugging agent is further studied.

A graphite material having pores which, when 200 rectangular regions of 6 μm×8 μm are randomly selected in a surface image of the graphite material observed by a scanning electron microscope, in the surface of the graphite material appearing in the regions, a pore appearing on the surface and having an aperture in a shape having a diameter of 15 nm to 200 nm, a circularity degree of 0.75 to 1.0 and a major axis/minor axis ratio of 1.0 to 1.5 is visible in two regions or more. Also disclosed is a carbon material for battery electrodes, a paste for electrodes, an electrode and a lithium ion secondary battery including the graphite material.

The invention relates to the field of rare earth materials, in particular to a preparation method for nanoscale rare earth oxide powder. The preparation method comprises the steps that a precipitation method is adopted, rare earth material liquid of a nitric acid system or a hydrochloric acid system is taken as raw materials, a precipitant is added, and precipitating, filtering, drying and calcining are performed to obtain the rare earth oxide powder. The preparation method is characterized in that an inorganic dispersant is added before the precipitant is added, and a crystal grain growth inhibitor is added after the precipitant is added. According to the preparation method, the prepared nanoscale rare earth oxide powder is small and uniform in grain, easy to clarify and wash and low in production cost and can be produced on a scale on the basis of the precipitation method on the condition that special equipment is not added, it can be seen that the grain size of the powder is below 70 nanometers through electronic microscopy scanning, and production use is met.

The invention discloses a method and a device for detecting a power insulating material under irradiation of X rays. The method comprises the following steps: 1), setting an insulating scratch defect; 2) measuring the insulating scratch defect by using an electronic microscope; 3), establishing a local discharge detection platform; 4), after local discharge detection stops, measuring the insulating scratch defect again, and comparing with a preceding measurement result; and 5), judging the change of the defect of a solid insulating material of power equipment according to a comparison result. The method and the device have the advantages as follows: by the method, the application range of an X-ray digital imaging detection technology in performing visual detection on the power equipment can be accurately determined; and the device is simple in structure, easy to implement and good in detection effect, and can acquire a visual defect and further determine the type of the defect.

A blue-fluorescence powder comprises a material with a general formula of Mg (1-x-y) SryAl2O4: Eux, wherein x is the mole number of europium atom and is less than or equal to 0.005 and more than or equal to 0.10, y is the mole number of strontium atom and is less than or equal to 0.01 and more than or equal to 0.14. A preparation method of the blue-fluorescence powder comprises the following steps of pretreating raw materials, blending, sintering, washing and preparing the blue-fluorescence powder. The blue-fluorescence powder prepared by the preparation method is tested by an X-ray powder diffractometer and a PE spectrofluorimeter and is observed by an environmental scanning electronic microscope, the test and the observation results show that the excitation spectrum of the prepared fluorescence powder adopts a wide band spectrum between 200 nm and 450 nm, the center wavelength of the excitation spectrum is 330 nm, the emission spectrum is a band spectrum positioned between 400 nm and 550 nm under the excitation of 330 nm and 365 nm ultraviolet lights, the center wavelength is 463 nm and is consistent with the spectrum of the common blue fluorescence powder, thereby the fluorescence powder prepared by adopting the preparation method is the blue-fluorescence powder.

The present invention provides an appearance inspection apparatus that allows a user to give precedence to either defect detection performance or throughput. The appearance inspection apparatus allows a user to select the frequency of a digital image signal or the ratio of the frequency of the digital image signal to a sampling rate. Further, a user is allowed to select either throughput improvement or S/N improvement to prioritize.

A porous membrane of vinylidene fluoride resin, including a 10 μm-thick portion contiguous to one surface thereof which comprises network resin fibers having an average diameter of at most 100 nm and shows a porosity A1 of at least 60% as measured by a focused ion beam-scanning electron microscope, and showing a surface pore size of at most 0.3 μm on said one surface thereof. The porous membrane has a treated water side surface layer showing a small surface pore size suitable for water filtration treatment and formed of extremely thin network resin fibers giving an extremely high porosity, thus showing an excellent minute particle-blocking performance and also extremely good anti-soiling resistance and regeneratability. The porous membrane is produced by a process including: melt-extrusion of a composition obtained by adding to vinylidene fluoride resin of a large molecular weight a relatively large amount of a polyester plasticizer which is mutually soluble with the resin and provides the resultant mixture with a crystallization temperature that is substantially identical to that of the vinylidene fluoride resin alone to form film, followed by cooling from one side of the film to solidify the film, extracting the plasticizer and stretching the membrane after the extraction while partially wetting a surface portion thereof.

The invention discloses a multi-shaft linkage position adjustment acne remover, comprising an L-shaped pillar and three moving mechanisms; the head ends of the three moving mechanisms are each provided with a servo motor, each servo motor is connected with a control mechanism through a wire, the three moving mechanisms include a transverse moving mechanism, a longitudinal moving mechanism and a vertical moving mechanism, the pillar includes a long portion and a short portion, the short portion is horizontally placed on a ground, the long portion is perpendicular to the short portion, the vertical moving mechanism is arranged at the long portion, a support is arranged on the longitudinal moving mechanism, an electronic microscope and a cross laser positioner are mounted on the support and are connected to a display through HDMI (high-definition multimedia interface) cables, the lateral side of the long portion is provided with a console capable of providing control for the three moving mechanisms, the electronic microscope and the cross laser positioner, and the console is connected with the control mechanisms. Through the cooperation of the three moving mechanisms in three directions, positioning accuracy and flexibility of the multi-shaft linkage position adjustment acne remover are greatly improved, positioning is accurate, and acne removal is effective.

The invention discloses a glucose sensor electrode and a manufacturing method thereof. A stainless steel acupuncture needle is used as a matrix electrode and Pt-Pb alloy particles are co-precipitated by constant current. Through energy scattering spectral analysis, the alloy particles mainly comprise Pt, and Pb alloy; and through the observation of a scanning electron microscope, the Pt-Pb alloy particles with large specific surface areas and uniform sizes are uniformly distributed on the surface of the electrode, and the roughness of the surface of the electrode is greatly improved. Through cyclic voltammetric measurement, the manufactured electrode has high electro catalytic activity in the suffer solution of phosphate.

The invention relates to a method of preparing a ZnO nano-line material with higher length-diameter ratio through a carbon thermal reduction technology, and belongs to the field of chemical and chemical engineering material preparation processing technology. The method is characterized in that: zinc oxide powder is mixed with activated carbon according to a certain ratio and put in an aluminum oxide porcelain boat, then a silicon slice (100) is put on another boat, and the two boats are arranged tightly with each other; in a tube furnace, at a temperature increasing rate of 10 DEG C per minute, the temperature rises from the room temperature to 950 DEG C and maintains at the temperature for 30 minutes, then the temperature decreases to the room temperature, and finally a pure phase ZnO nano-line deposits on the silicon slice. Crystal phase, morphology and size of the product are analyzed by X-ray powder diffraction (XRD), scan electronic microscope (SEM), and the like. The analysis result shows that the method of preparing a ZnO nano-line material with higher length-diameter ratio through a carbon thermal reduction technology can prepare a ZnO nano-line of a hexagonal wurtzite, and the nano-line has a length of 100 [mu]m, an average diameter of 500 nm, and a length-diameter ratio of 200.

The present application discloses a semiconductor structure detection method and detection device thereof. The detection method comprises the steps: establishing a relation comparison table between adistortion value and at least one electrical performance parameter; obtaining the cross-sectional image of the semiconductor structure outputted by a transmission electron microscope, including the cross-sectional pattern of at least one hole, wherein the plane of the cross-sectional pattern is perpendicular to the axial direction of the hole; identifying a plurality of boundary points of the holeso as to obtain a plurality of boundary coordinates corresponding to a plurality of boundary points;the ellipse is numerically fitted according to a plurality of boundary coordinates and the long axis and the short axis of the ellipse are obtained; calculating the difference between the long axis and the short axis and taking the difference as the distortion value of the hole; and judging whetherthe electrical performance parameters corresponding to the hole meet the reasonable range according to the relation comparison table and the distortion value of the hole. The detection method takes the difference between the long axis and the short axis of each hole as the characterization parameter of the distortion degree of the hole so as to quantify the distortion degree of the hole and finally achieve the purpose of quantitatively analyzing the influence of the distortion degree on the electrical performance.