43 results about "Energy-dispersive X-ray spectroscopy" patented technology

A single column inductively coupled plasma source with user selectable configurations operates in ion-mode for FIB operations or electron mode for SEM operations. Equipped with an x-ray detector, energy dispersive x-ray spectroscopy analysis is possible. A user can selectively configure the ICP to prepare a sample in the ion-mode or FIB mode then essentially flip a switch selecting electron-mode or SEM mode and analyze the sample using EDS or other types of analysis.

A positive active material for a lithium-ion secondary battery includes a lithium composite oxide particle containing nickel atoms, manganese atoms, and fluorine atoms. The lithium composite oxide particle includes a particle center portion and a surface layer portion that is closer to a surface of the lithium composite oxide particle than the particle center portion is. A fluorine atom concentration Fc (at %) of the particle center portion measured by energy dispersive X-ray spectroscopy is lower than a fluorine atom concentration Fs (at %) of the surface layer portion.

The invention discloses a detection method for microscopic lithium precipitation from cycles of a lithium ion battery. The detection method comprises the following steps: firstly, discharging a to-be-detected lithium ion battery; disassembling the lithium ion battery after discharging, taking out an anode piece and cleaning the anode piece to remove residual electrolyte; exposing the anode piece to the air for 5-20 h, performing heating and drying at 60-110 DEG C for 1-3 h, and converting precipitated lithium into lithium carbonate finally; measuring corresponding data by EDS (energy-dispersive X-ray spectroscopy) or chemical titration to determine the degree of lithium precipitation in the anode piece. Compared with the prior art, the method has the following advantages that the detectionrange is wide, the method is applicable to detection of microscopic lithium precipitation, and the degree of lithium precipitation can be judged visually based on specific data obtained by detection;detection convenience is higher, external interference of detection data is low, requirements of the detection method for equipment are low, and the detection cost is low; the method is applicable toanalysis of lithium precipitation from cycles of various lithium ion batteries such as LFP, NCM, LMO and the like.

A method and system are disclosed for improving characteristic peak signals in electron energy loss spectroscopy (EELS) and energy dispersive x-ray spectroscopy (EDS) measurements of crystalline materials. A beam scanning protocol is applied which varies the inclination, azimuthal angle, or a combination thereof of the incident beam while spectroscopic data is acquired. The method and system may be applied to compositional mapping.

The invention comprises an environmentally benign method for the direct in situ preparation of copper nanoparticles (CuNPs) in paper by reducing sorbed copper ions with ascorbic acid. Copper nanoparticles were quickly formed in less than 10 minutes and were well distributed on the paper fiber surfaces. Paper sheets were characterized by x-ray diffraction, scanning electron microscopy, energy dispersive x-ray spectroscopy, and atomic absorption spectroscopy. Antibacterial activity of the CuNP sheets was assessed for by passing Escherichia coli bacteria suspensions through the papers. The effluent was analyzed for viable bacteria and copper release. The CuNP papers with higher copper content showed a high bacteria reduction of log 8.8 for E. coli. The paper sheets containing copper nanoparticles were effective in inactivating the test bacteria as they passed through the paper. The copper levels released in the effluent water were below the recommended limit for copper in drinking water (1 ppm).

This invention relate to a copper-clad laminate with good adhesion between a copper foil and a layer of polyimide resin useful for high-density printed wiring boards. The copper-clad laminate having a copper foil treated with a heterocyclic compound containing nitrogen and sulfur as an organic surface treating agent and a layer of polyimide resin satisfying either of the following requirements: the concentration of sulfur atoms derived from the organic surface treating agent in the interface of copper and polyimide is in the range of 0.01-0.24 wt % as determined by an Energy dispersive X-ray spectroscopy (EDX); the weight of sulfur atoms derived from the organic surface treating agent per unit area of the copper foil is in the range of 2.5-3.1 mg / m2; and the concentration of sulfur atoms derived from the organic surface treating agent existing in the range from the surface to a depth of 16 nm of the copper foil is in the range of 1.73-2.30 atom % as determined by X-ray photoelectron spectroscopy (XPS).

A catalyst support for purification of exhaust gas includes a porous composite metal oxide, the porous composite metal oxide containing alumina, ceria, and zirconia and having an alumina content ratio of from 5 to 80% by mass, wherein after calcination in the air at 1100° C. for 5 hours, the porous composite metal oxide satisfies a condition such that standard deviations of content ratios (as at % unit) of aluminum, cerium and zirconium elements are each 19 or less with respect to 100 minute areas (with one minute area being 300 nm in length×330 nm in width) of the porous composite metal oxide, the standard deviation being determined by energy dispersive X-ray spectroscopy using a scanning transmission electron microscope equipped with a spherical aberration corrector.

A method for generating cross-sectional profiles using a scanning electron microscope (SEM) includes scanning a sample with an electron beam to gather an energy-dispersive X-ray spectroscopy (EDS) spectrum for an energy level to determine element composition across an area of interest. A mesh is generated to locate positions where a depth profile will be taken. EDS spectra are gathered for energy levels at mesh locations. A number of layers of the sample are determined by distinguishing differences in chemical composition between depths as beam energies are stepped through. A depth profile is generated for the area of interest by compiling the number of layers and the element composition across the mesh.

A task of the present invention is to provide a Ti—Mo alloy material which can be improved in the yield stress at room temperature by the precipitation of an aged omega phase in the Ti—Mo alloy while maintaining large ductility at room temperature, and a method for producing the same.Provided is a Ti—Mo alloy collectively having an Mo content of 10 to 20 mass %, wherein the Ti—Mo alloy has a winding belt-like or swirly segregation portion having a width of 10 to 20 μm in the plane of a backscattered electron image (BEI) or an energy dispersive X-ray spectroscopy (EDS) image of the Ti—Mo alloy, as examined under a scanning electron microscope, in which Mo content is larger than the collective Mo content of the Ti—Mo alloy. When generally observing the entire plane examined, a segregation structure in a swirly form can be observed.Further, provided is the Ti—Mo alloy which has been subjected to aging treatment so that an aged omega phase is precipitated along the segregation portion. When generally observing the entire plane examined, an aged omega phase structure in a swirly form can be observed.

The electrode material contains a complex oxide having a perovskite structure represented by a general formula ABO3. Each A-site element having a standard deviation of an atomic concentration of 10.3 or less. The atomic concentration is measured by energy dispersive X-ray spectroscopy at ten spots within one field of view.

A method for generating cross-sectional profiles using a scanning electron microscope (SEM) includes scanning a sample with an electron beam to gather an energy-dispersive X-ray spectroscopy (EDS) spectrum for an energy level to determine element composition across an area of interest. A mesh is generated to locate positions where a depth profile will be taken. EDS spectra are gathered for energy levels at mesh locations. A number of layers of the sample are determined by distinguishing differences in chemical composition between depths as beam energies are stepped through. A depth profile is generated for the area of interest by compiling the number of layers and the element composition across the mesh.

The invention relates to a chemical modification method for a surface of ZnO nanostgructure with aromatic diazo salt, belonging to the functional material and surface chemistry field. The method comprises the steps that: ZnO with the nanostructure is immersed in absolute ethyl alcohol, is subject to the ultrasonic processing, washed by deionized water for ultrasonic washing, taken out and dried in nitrogen environment; under the condition of keeping out of light, the processed nano ZnO is immersed in actonitrile of aromatic diazo salt for 18 to 36 hours at a temperature of 10 and 50 DEG C; the nano ZnO modified by the aromatic diazo salt is taken out from solution, is irradiated through an ultraviolent lamp or heated, and kept for a period of time; and the nano ZnO is washed orderly with the acetonitrile, acetone and ethanol, dried in the nitrogen environment and the modification is completed. The method is simple and feasible; and the modified ZnO nanostructure is more stable, can resist the corrosion of the chloroform, the ethanol, the acetone, methylene dichloride and other various organic solvent, the content of organic carbon reaches more than 10 percent through the analysis to the modified surface with an energy dispersive x-ray spectroscopy.

The invention discloses a scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDX) detection method for distribution characteristics of nitrogen, phosphorus and potassium in a crop leaf. The SEM-EDX detection method adopts a way of combining SEM with EDX to carry out surface scanning on a leaf cross section and line scanning of the thickness direction to obtain an energy spectrum diagram of nitrogen, phosphorus and potassium in the crop leaf, and then analyzing the energy spectrum diagram to obtain space distribution characteristics of nitrogen, phosphorus and potassium in a mesophyll tissue. Nitrogen, phosphorus and potassium are distributed in the whole leaf cross section, the distribution characteristics of nitrogen and phosphorus are similar, the distribution densities of nitrogen and phosphorus along the periphery of a cell wall contour are obviously higher than the distribution densities of other parts; potassium is distributed relatively uniformly in the whole leaf cross section. The SEM-EDX detection method disclosed by the invention solves the problem that the space distribution characteristics of nitrogen, phosphorus and potassium in the leaf cannot be determined, and can be applied to the microscopic detection of crop nutrients.

A multimodality imaging system and method for mineralogy segmentation is disclosed. Image datasets of the sample are generated for one or more modalities, including x-ray and focused ion beam scanningelectron microscope (FIB-SEM) modalities. Mineral maps are then created using Energy Dispersive X-ray spectroscopy (EDX) from at least part of the sample covered by the image datasets. The EDX mineral maps are applied as a mask to the image datasets to identify and label regions of minerals within the sample. Feature vectors are then extracted from the labeled regions via feature generators suchas Gabor filters. Finally, machine learning training and classification algorithms such as Random Forest are applied to the extracted feature vectors to construct a segmented image representation of the sample that classifies the minerals within the sample.

Provided are a surface treated phosphor having high dispersibility and remarkably improved moisture resistance without degradation in fluorescence properties, and a method of producing the surface treated phosphor.The present invention relates to a surface treated phosphor including: a phosphor matrix including an alkaline earth metal and silicon; and a surface treatment layer including an alkaline earth metal, silicon, and a specific element belonging to groups 4 to 6 of the periodic table, wherein, when element distribution of the surface treatment layer in the thickness direction viewed in cross-section is determined by electron microscopy and energy dispersive X-ray spectroscopy coupled with the electron microscopy, the position representing the maximum peak of a specific element content is located closer to the surface than the position representing the maximum peak of a silicon content and silicon contents of the phosphor matrix and the surface treatment layer satisfy the following formula (1):[Formula 1]S1<S2  (1)wherein S1 represents the silicon content of the phosphor matrix and S2 represents the silicon content of the surface treatment layer.

A method of examining a sample using a spectroscopic apparatus, such as energy-dispersive X-ray spectroscopy (EDX), comprising the following steps: - Mounting the sample on a sample holder; - Directing a focused input beam of radiation, such as an electron beam or X-ray beam, onto a location on the sample, thereby producing an interaction that causes a flux of stimulated photonic radiation, such as fluorescent X-rays, to emanate from said location; - Examining said flux using a multi-channel photon-counting detector, thus accruing a measured spectrum for said location; - Automatically repeating said directing and examining steps for a series of successive locations on the sample, which method comprises the following steps: - Choosing a beam parameter of the input beam, such as the beam curent or beam spot size, that will influence a magnitude of said flux of stimulated photonic radiation; - For each location within a first set of locations on the sample, accruing a spectrum using a first value of said beam parameter; - For each location within a second set of locations on the sample, accruing a spectrum using a second value of said beam parameter, different from said first value. One application consists in detecting and flagging events during EDX analysis when pile-up is too high and re-acquire EDX data for the locations corresponding to these flagged events.

The method for producing noble metal nanocomposites involves reducing noble metal ions (Ag, Au and Pt) on graphene oxide (GO) or carbon nanotubes (CNT) by using Artocarpus integrifolia leaves extract as a reducing agent. As synthesized MNPs / GO and MNPs / CNT composites have been characterized using X-ray diffraction (XRD), transmission electron microscope (TEM) imaging, and energy dispersive X-ray spectroscopy (EDX). The TEM images of prepared materials showed that the nanocomposites were 1-30 nm in size with spherical nanoparticles embedded on the surface of GO and CNT. This synthetic route is easy and rapid for preparing a variety of nanocomposites. The method avoids use of toxic chemicals, and the prepared nanocomposites can be used for biosensor, fuel cell, and biomedical applications.

A semiconductor device which can suppress leakage current between a wiring and a connection electrode connected to a floating node is provided. The semiconductor device includes a first insulator, a first conductor over the first insulator, a second conductor over the first insulator, and a second insulator over the first insulator, the first conductor, and the second conductor. The first conductor and the second conductor contain a metal A (one kind or a plurality of kinds of aluminum, copper, tungsten, chromium, silver, gold, platinum, tantalum, nickel, molybdenum, magnesium, beryllium, indium, and ruthenium). The metal A is detected in an interface between the first insulator and the second insulator by an energy dispersive X-ray spectroscopy (EDX). The second insulator includes a groove for exposing the first insulator between the first conductor and the second conductor.

The method for producing noble metal nanocomposites involves reducing noble metal ions (Ag, Au and Pt) on graphene oxide (GO) or carbon nanotubes (CNT) by using Artocarpus integer leaves extract as a reducing agent. As synthesized MNPs / GO and MNPs / CNT composites have been characterized using X-ray diffraction (XRD), transmission electron microscope (TEM) imaging, and energy dispersive X-ray spectroscopy (EDX). The TEM images of prepared materials showed that the nanocomposites were 1-30 nm in size with spherical nanoparticles embedded on the surface of GO and CNT. This synthetic route is easy and rapid for preparing a variety of nanocomposites. The method avoids use of toxic chemicals, and the prepared nanocomposites can be used for biosensor, fuel cell, and biomedical applications.