Abstract: A control unit for controlling a deflector in an imaging apparatus. The imaging apparatus includes an electron gun arranged to provide electron beam to scan a specimen, and the deflector. The deflector is arranged to move the electron beam in a first scanning direction and a second scanning direction that are in the same plane for scanning the specimen. The control unit is configured to determine the first scanning direction and the second scanning direction, and process the determined first scanning direction and the determined second scanning direction based on predetermined equations. The control unit is further configured to provide, based on the processing, a control signal to the deflector to adjust one or both of the first scanning direction and the second scanning direction such that they become substantially orthogonal.

Abstract: A control unit for controlling a deflector in an imaging apparatus. The imaging apparatus includes an electron gun arranged to provide electron beam to scan a specimen, and the deflector. The deflector is arranged to move the electron beam in a first scanning direction and a second scanning direction that are in the same plane for scanning the specimen. The control unit is configured to determine the first scanning direction and the second scanning direction, and process the determined first scanning direction and the determined second scanning direction based on predetermined equations. The control unit is further configured to provide, based on the processing, a control signal to the deflector to adjust one or both of the first scanning direction and the second scanning direction such that they become substantially orthogonal.

Abstract: A device for providing electrons and its method of making. The device includes an optical fiber with a tip and a metallic arrangement arranged at the tip. The metallic arrangement is arranged to be excited by an energy source to emit electrons or electron beams.

Abstract: An electron gun and an apparatus incorporating the electron gun. The electron gun includes an electron emission element, an electrode, a control element, and a control circuit. The electron emission element is arranged to be activated to emit electron beam. The electrode is arranged to be electrically connected with a power supply to accelerate the emitted electron beam. The control element may be arranged between the electron emission element and the electrode. The control element is arranged to be electrically connected with the power supply to provide an electric field to control emission of electron beams from the electron emission element. The control circuit is electrically connected with the control element for changing the electric field provided by the control element.

Abstract: An electron microscope includes a stage, a charged particle beam generator, a plurality of elemental spectrum detectors and a reader. The stage is configured for carrying a sample. The charged particle beam generator is configured for generating a charged particle beam to bombard the sample. The elemental spectrum detectors is configured for detecting X ray emitted from the sample being bombarded by the charged particle beam and outputting a plurality of corresponding spectrum detecting signals. The reader is configured for calibrating a plurality of counting signals generated by the spectrum detecting signals and summing the calibrated counting signals to obtain an elemental spectrum of the sample. The collection time of elemental spectrum of the above-mentioned electron microscope can be shortened. A reader and an acquiring elemental spectrum method applied to the above-mentioned electron microscope are also disclosed.

Abstract: An electron microscope includes a charged particle beam generator, a detector, a film and a bearing unit. The charged particle beam generator generates a first charged particle beam to bomb an object. The detector detects a second charged particle from the object to form an image. The film disposes on downstream of charged particle beam generator and has a first surface and a second surface. A space between charged particle beam generator and the first surface of film is a vacuum environment. The bearing unit disposes at a side of second surface of film and has a bearing surface and a back surface. The object disposes on the bearing surface of the bearing unit and a distance between an analyzed surface of the object and the film is less than a predetermined spacing. A liquid space exists between the analyzed surface and the film to be filled a liquid.

Abstract: An electron microscope includes a stage, a charged particle beam generator, a plurality of elemental spectrum detectors and a reader. The stage is configured for carrying a sample. The charged particle beam generator is configured for generating a charged particle beam to bombard the sample. The elemental spectrum detectors is configured for detecting X ray emitted from the sample being bombarded by the charged particle beam and outputting a plurality of corresponding spectrum detecting signals. The reader is configured for calibrating a plurality of counting signals generated by the spectrum detecting signals and summing the calibrated counting signals to obtain an elemental spectrum of the sample. The collection time of elemental spectrum of the above-mentioned electron microscope can be shortened. A reader and an acquiring elemental spectrum method applied to the above-mentioned electron microscope are also disclosed.

Abstract: A combined round-multipole magnetic lens comprises a coil bracket, a first pole piece and a second pole piece. At least a first pole shoe of the first pole piece on the coil support and at least a second pole shoe of the second pole piece under the coil support respectively extend towards the central axis. The first pole shoe and the second pole shoe are symmetric according to the central axis, or the first pole shoes and the second pole shoes are respectively symmetrically arranged, and the angle difference between the first pole shoe and the adjacent second pole shoes is 360/2N degrees. A magnetic circuit gap is formed between the first pole shoe and the adjacent second pole shoe, for generating a magnetic field distribution of multi-poles and reducing the volume and the number of power supplies.

Abstract: A wide range tunable magnetic lens for the desktop electron microscope is provided. The wired range tunable magnetic lens comprises a coil support, an inner pole piece, a permanent-magnet, a first outer pole piece and a second outer pole piece. The inner pole piece covers the coil support and forms a first magnetic-circuit gap. The permanent-magnet forms a ring structure according to the central axis and is disposed at the outer side of the inner pole piece away from the central axis. The first outer pole piece is adjacently disposed at the upper-side of the permanent-magnet and extends to the central hole of the coil support. The second outer pole piece is adjacently disposed at the under-side of the permanent-magnet and extends to the central hole of the coil support, wherein the first outer pole piece and the second outer pole piece forms a second magnetic-circuit gap.

Abstract: A wide range tunable magnetic lens for the desktop electron microscope is provided. The wired range tunable magnetic lens comprises a coil support, an inner pole piece, a permanent-magnet, a first outer pole piece and a second outer pole piece. The inner pole piece covers the coil support and forms a first magnetic-circuit gap. The permanent-magnet forms a ring structure according to the central axis and is disposed at the outer side of the inner pole piece away from the central axis. The first outer pole piece is adjacently disposed at the upper-side of the permanent-magnet and extends to the central hole of the coil support. The second outer pole piece is adjacently disposed at the under-side of the permanent-magnet and extends to the central hole of the coil support, wherein the first outer pole piece and the second outer pole piece forms a second magnetic-circuit gap.

Abstract: A combined round-multipole magnetic lens comprises a coil bracket, a first pole piece and a second pole piece. At least a first pole shoe of the first pole piece on the coil support and at least a second pole shoe of the second pole piece under the coil support respectively extend towards the central axis. The first pole shoe and the second pole shoe are symmetric according to the central axis, or the first pole shoes and the second pole shoes are respectively symmetrically arranged, and the angle difference between the first pole shoe and the adjacent second pole shoes is 360/2N degrees. A magnetic circuit gap is formed between the first pole shoe and the adjacent second pole shoe, for generating a magnetic field distribution of multi-poles and reducing the volume and the number of power supplies.

Abstract: A method for determining information regarding an object comprising particles includes obtaining a wave function representative of the object detected at a detection surface of a detection system for detecting the wave function, deriving at least two spatial frequencies of the detected wave function, and deriving for each of the at least two spatial frequencies at least a phase based on the obtained wave function. A functional relationship between the spatial frequency and the phase is analyzed for the spatial frequencies. At least one parameter indicative of a property of the object is derived therefrom. A corresponding system involves the method as well as corresponding computer-related products.

Abstract: A power driven component inside a compressor is disposed with a stator and rotors. The stator has an iron core in a circular ring and stator coils in a tightly wound manner. A vertical interval is formed between adjacent stator coils. A cover body is formed on the stator and a shield member that is formed with an upper portion along each stator coil and bending curve portions at two sides of the upper portion. Each bending curve portion is extended toward the interval from the upper portion. A sealed cover portion is connected between the bending curve portions of the upper portion and correspondingly seals each interval to reduce noise of the compressor and oil circulation rate.

Abstract: A power driven component inside a compressor is disposed with a stator and rotors. The stator has an iron core in a circular ring and a plurality of stator coils in concentrated winding manner. An interval vertically passing through is formed between adjacent stator coils. A cover body is formed on the stator and a shield member that is formed with an upper portion along each stator coil and bending curve portions at two sides of the upper portion. Each bending curve portion is extended toward the interval from the upper portion. A sealed cover portion is connected between the bending curve portions of the upper portion and correspondingly seals each interval to reduce noise of the compressor and oil circle rate.

Abstract: A motor having more magnets on effective area of the rotor includes a stator, a rotor and a rotation shaft, the rotor has a plurality number of rotor magnetic poles, a magnet is installed inside each of rotor magnetic pole, and a concave arc is on the outer side of each magnet and forms the first, the second and the third surfaces near inside of each magnet. The concave arc connects to the first and the third surfaces with a connecting plan respectively, each connecting plan nears the periphery surface of the rotor. The motor has more magnets on the effective area of the rotor for higher motor efficiency.

Abstract: In a method and apparatus for transferring carbonaceous material layer, a carbonaceous material layer is grown on a growth substrate, and a first continuous conveying unit is used to feed the growth substrate and a transfer material, so that a gluing layer of the transfer material is attached to the carbonaceous material layer on the growth substrate. Then, a transformation device changes a viscosity of the gluing layer for the latter to adhere to the carbonaceous material layer. A second continuous conveying unit is further used to transfer and then separate the mutually adhered transfer material and growth substrate from each other, so that some part of the carbonaceous material layer is transferred onto the gluing layer while other part of the carbonaceous material layer remains on the growth substrate. Thus, at least a one-layer-thickness of the carbonaceous material layer is transferred.

Abstract: A method of manufacturing an electrochromic device, which includes the steps of: (a) forming a plurality of nano-electrochromic elements on a transparent conductor of a transparent conductor substrate, wherein the nano-electrochromic elements are bonded together to form an electrochromic layer on the transparent conductor substrate so as to define a reaction surface of the electrochromic layer; (b) applying an electrolyte on the electrochromic layer; and (c) electrolyzing the electrolyte such that ions in the electrolyte are displaced into the electrochromic layer through the reaction surface thereof to alter an optical characteristic of the electrochromic elements.