67 results about "Cathodoluminescence" patented technology

A system is disclosed for obtaining layered cathodoluminescence images of a sample wherein the light collecting equipment is highly efficient and wherein the microtoming or Focused Ion Beam equipment does not interfere with the efficiency of the light collecting equipment and wherein the position of the sample with respect to the light collecting equipment is not disturbed in the microtoming or ion beam milling process. Embodiments are disclosed allowing simultaneous collection of cathodoluminescence images and collection of other electron based imaging signals such as backscattered and secondary electrons.

A protective layer of a plasma display panel is disclosed. In the plasma display panel including a first panel and a second panel arranged to face each other while interposing barrier ribs therebetween, the plasma display panel further includes a first protective layer formed on a dielectric layer of the first panel, and a second protective layer formed on the first protective layer and containing a metallic oxide having a maximum cathode ray luminescence value within a wavelength region of 300 to 500 nanometers.

Embodiments of the invention disclose a dolomite karst reservoir genesis identification method and apparatus. The method comprises: establishing a correspondence relationship between a karst reservoir genesis and a dolomite cathodoluminescence feature; obtaining to-be-identified dolomite; performing cathodoluminescence analysis on the dolomite to obtain the dolomite cathodoluminescence feature; and based on the dolomite cathodoluminescence feature, obtaining the dolomite karst reservoir genesis according to the correspondence relationship between the karst reservoir genesis and the dolomite cathodoluminescence feature. According to the method and the apparatus provided by the embodiments of the invention, the type of the dolomite karst reservoir genesis can be quickly identified.

A cathodoluminescent light source comprising a field-emission cathode serving as a source of electrons, an anode having a specular light-reflecting surface, and an electron-excited phosphor applied to the specular light-reflecting anode surface. The cathode and anode are enclosed in an evacuated housing having a transparent surface, so as to let the electron-excited phosphor on the anode surface, be irradiated with an electron beam, and let the luminous flux resulting from the process of cathodoluminescence, to emerge.

A predictive choice process of a manufacturing process of an optical component intended to be subjected to laser fluxes, the choice being intended to select from among several possible manufacturing processes that which results in components having better laser flux behaviour than those obtained by the other possible processes characterised in that a) a number N of cathodoluminescence measurements are made on components obtained by a first of the possible manufacturing processes, while the component receives an electronic beam having a determined energy, a focus on the surface of the determined component and a determined intensity controlled by a value of a ground current measured on the component, while it is being subjected to said electronic beam, b) an average cathodoluminescence value on the N measurements is calculated, c) operations a) and b) on components obtained by each of the other possible manufacturing processes are repeated, d) the most advantageous manufacturing process is decided as the one for which the average cathodoluminescence value is the lowest.

The invention refers to a method and a charged particle beam device (1) for analyzing an object (24) using a charged particle beam interacting with the object (24). The object (24) comprises a sample (15A) embedded in a resin (15B). Interaction radiation in the form of cathodoluminescence light is detected for identifying areas in which the resin (15B) is arranged and in which the sample (15A) is arranged. Interaction particles are detected to identify particles within the resin (15B) and the sample (15A) for further analysis by using EDX analysis.

A side entry TEM holder incorporates a miniature tilted off axis elliptical mirror to collect cathodoluminescence from the specimen and couple it efficiently into a tilted fiber optic integrated into the holder. The design is compatible with the cryogenic operation of the holder. TEM specimens are partially transparent to the electron beam, and so light can be emitted above and below the specimen. The same principle of off-axis mirror and tilted fiber can be utilized to collect light from above and below the specimen yet fit into the very confined space required by insertion through the goniometer and for operation between narrow gap pole pieces. With a dual system, the emission of light from above the specimen can be compared to that from below thereby enhancing the versatility of the analytical technique.

The invention provides a method for discriminating the redox property of an ore-forming fluid based on the cathodoluminescence characteristic of scheelite in a quartz vein type deposit. The method comprises the following steps: obtaining multiple scheelite samples; choosing scheelite particles based on the mineralogy, the morphology and the output characteristics of the scheelite particles in thescheelite samples in order to obtain high-quality scheelite particles; obtaining the scanning electron microscopy-cathodoluminescence images and the back scattering images of the high-quality scheelite particles; dividing the high-quality scheelite particles based on the scanning electron microscopy-cathodoluminescence images and the back scattering images according to the morphology and internalstructural characteristics of the scheelite particles in order to obtain multiple types of the high-quality scheelite particles; carrying out in-situ analysis on rare earth elements in the multiple types of the high-quality scheelite particles to obtain europium content and molybdenum content data; and establishing an element distribution map according to the europium content and molybdenum content data, wherein the element distribution map is used for indicating the redox property of the ore-forming fluid for forming the scheelite.

The invention discloses a method for establishing a diagenetic paleo-fluid temperature correction map of marine carbonate rock reservoirs. The method comprises: S1, selecting a plurality of carbonaterock samples according to core observation and analysis and processing the plurality of selected samples to obtain thin sheet and powder samples; S2, carrying out mineralogy analysis, fluid inclusionobservation, and cathodoluminescence observation on the thin sheet samples to obtain an analysis result, carrying out fluid inclusion homogenization temperature measurement on the thin sheet samples obtained in the S1, and carrying out carbon-oxygen coupled isotope determination on the powder samples; S3, processing and analyzing the homogenization temperature value and the carbon-oxygen coupled isotope temperature value by combining the analysis result in the S2; and S4, establishing a correction map of the fluid inclusion homogenization temperature and verifying the rationality and accuracyof the map. Therefore, the fluid inclusion homogenization temperature can be correct, thereby obtaining an accurate diagenetic paleo-fluid temperature.

The invention discloses a cathode luminescence imaging method of monazite, which comprises: making a target for monazite mineral particles to obtain a resin target; polishing the resin target to expose the monazite to the resin target; Coating the monazite of the above-mentioned resin target, with the coated surface facing up, and fixing the coated resin target on the sample stage of the field emission scanning electron microscope with conductive glue, and vacuumizing the sample chamber of the field emission scanning electron microscope to make the resin target Under vacuum conditions; select the working distance of the cathodoluminescence probe; select the accelerating voltage of the electron beam; select the beam spot size of the electron beam; select the primary gain value; obtain the image of the single particle of monazite. The invention performs high-resolution cathodoluminescence luminescence imaging on monazite, solves the problem that monazite has always been black in cathodoluminescence, achieves a clear reflection of the internal structure characteristics of monazite, and achieves the purpose of accurate point selection for in-situ micro-region dating of monazite .

The invention relates to a making method of blue powder for cathode beam, which comprises the following steps: washing after incandescing mixture of zinc blend, sodium chloride, aluminum sulfate, sulfur and aluminium chloride till conductivity of supernatant being 100mu S/cm-700mu S/cm; fetching powder solid and ball grinding after dewatering; adding colorant after re-atomizing-pulping till being latex and adjusting acidness of slurry with hydric sulphate; re-atomizing-pulping after washing, dewatering, drying the powder and screening; adjusting the acidness of the slurry with caustic soda after adding G/A glue, silicon dioxide and zinc sulfate; adding aluminum oxide and drying to produce cathode-ray luminescent material with reduced heat sensitivity. The invention achieves to reduce the heat sensitivity when coats display screen with the luminescent powder after adding the aluminum oxide after coloring dealing with the luminescent powder. The luminescent powder with adding the aluminum oxide is an effective blue light fluorophor because of uniform grain, purifying color purity and fine luminous property, which improves screening characteristics remarkably.

Provided herein are non-invasive methods of nanoscale imaging of a sample using an illumination layer and an electron beam. For example, the electron may activate the illumination layer without activating the sample, and the illumination layer may emit cathodoluminescence to produce a nanoscale image of the sample.

An apparatus for simultaneous detection of backscattered electrons and photons from a sample. The device includes a direct detection backscattered electron detector and a photon detector. The backscattered electron detector has a reflective surface that reflects photons emitted by the sample onto the photon detector.

The present invention provides surface coated phosphors useful in field emission displays and vacuum fluorescent displays. The surface coated phosphor comprises a thin coating of rare earth oxide, e.g., yttrium oxide, disposed on an uncoated phosphor such as a sulfide phosphor. The present invention further provides a process for preparing a surface coated phosphor comprising contacting the uncoated phosphor with a rare earth hydroxide gel solution to obtain a rare earth hydroxide gel coated phosphor, drying the gel coated phosphor to remove solvent residues, and heat treating the dried rare earth hydroxide gel coated phosphor. The surface coated phosphors of the present invention have improved cathodoluminescence efficiency, coulombic aging resistance, chemical, and/or oxidative stability.

An electrode for photoelectric conversion elements having high initial characteristics and excellent durability, a manufacturing method of the electrode for photoelectric conversion elements, and a dye-sensitized solar cell are provided. An electrode for photoelectric conversion elements according to the present invention has a structure in which a metal oxide layer containing zinc oxide is provided on a base. The metal oxide layer has a plurality of bump-like protrusions formed so as to protrude radially from the base side, and also has an emission peak in a region of 350 to 400 nm in cathodoluminescence measurement. The metal oxide layer is preferably heat treated at 220 to 500° C.

The invention provides an in-situ characterization method utilizing SEM-CL (Scanning Electron Microscopy-Cathodoluminescence) and a TEM (Transmission Electron Microscope). The method comprises the following steps: 1) providing a micro grid; 2) forming a conducting layer on the surface of the micro grid; 3) placing nano wires on the surface of the conducting layer and fixing the nano wires on the surface of the conducting layer by utilizing an adhesive; 4) utilizing a scanning electronic microscope to select a single nano wire, shooting the specific morphology of the single nano wire and recording the size of the single nano wire; 5) utilizing a cathode fluorescence testing device to record the luminance of different positions of the single nano wire, and utilizing the line scanning function of the cathode fluorescence testing device to calibrate a second mark on the single nano wire; and 6) utilizing a transmission electron microscope to record the structural information of the second mark on the single nano wire. According to the invention, a special fine sampling and testing method is utilized, the structural information obtained by the TEM is directly related with the luminescence obtained by the SEM-CL, and a bridge between a nano structure of a material and the luminescence of the material is constructed.