Patent classifications
G01N23/2208
Graphene-based electro-microfluidic devices and methods for protein structural analysis
The invention provides a novel microfluidic platform for use in electro-crystallization and electro-crystallography experiments. The manufacturing and use of graphene as X-ray compatible electrodes allows the application of electric fields on-chip, during X-ray analysis. The presence of such electric fields can be used to modulate the structure of protein (or other) molecules in crystalline (for X-ray diffraction) or solution form (for X-ray scattering). Additionally, the presence of an electric field can be used to extend the lifetime of fragile samples by expediting the removal of reactive secondary radiation damage species.
Graphene-based electro-microfluidic devices and methods for protein structural analysis
The invention provides a novel microfluidic platform for use in electro-crystallization and electro-crystallography experiments. The manufacturing and use of graphene as X-ray compatible electrodes allows the application of electric fields on-chip, during X-ray analysis. The presence of such electric fields can be used to modulate the structure of protein (or other) molecules in crystalline (for X-ray diffraction) or solution form (for X-ray scattering). Additionally, the presence of an electric field can be used to extend the lifetime of fragile samples by expediting the removal of reactive secondary radiation damage species.
Quantitative analysis method, quantitative analysis program, and X-ray fluorescence spectrometer
Provided are a quantitative analysis method, a quantitative analysis program, and an X-ray fluorescence. The quantitative analysis method includes: a step of acquiring a representative composition set to represent contents of analysis components; a step of acquiring a plurality of comparative compositions, in each of which the content of one of the analysis components of the representative composition is changed by a predetermined content; a detection intensity calculation step of calculating a detection intensity indicating an intensity of fluorescent X-rays detected under the influence of the geometry effect through use of an FP method with respect to a virtual sample having a thickness set in advance and being indicated by each of the representative composition and the comparative compositions; and a step of calculating a matrix correction coefficient for each of the analysis components based on the detection intensity.
Quantitative analysis method, quantitative analysis program, and X-ray fluorescence spectrometer
Provided are a quantitative analysis method, a quantitative analysis program, and an X-ray fluorescence. The quantitative analysis method includes: a step of acquiring a representative composition set to represent contents of analysis components; a step of acquiring a plurality of comparative compositions, in each of which the content of one of the analysis components of the representative composition is changed by a predetermined content; a detection intensity calculation step of calculating a detection intensity indicating an intensity of fluorescent X-rays detected under the influence of the geometry effect through use of an FP method with respect to a virtual sample having a thickness set in advance and being indicated by each of the representative composition and the comparative compositions; and a step of calculating a matrix correction coefficient for each of the analysis components based on the detection intensity.
COMPUTER-ASSISTED METHOD FOR DETERMINING AN ELEMENT FRACTION OF A DETERMINATION ELEMENT HAVING A SMALL ATOMIC NUMBER, IN PARTICULAR A LI FRACTION, AND CORRESPONDING DEVICE FOR PROCESSING DATA
A computer-assisted method for determining an element fraction of a determination element, in particular with a small atomic number, especially lithium, of an examination region of a sample bombarded with primary electrons, wherein a backscattered electron signal, preferably a backscattered electron image, captured using a backscattered electron detector and a spectroscopy element composition of the examination region determined using an X-ray spectroscopy detector, such as an EDX detector, are obtained. A practicable quantitative determination can be achieved if a measured gray value SM determined from the backscattered electron signal is combined with element fractions of the spectroscopy element composition in order to determine a fraction of the determination element. A device for processing data and to a computer product for carrying out the method is also disclosed.
Phase Analyzer, Sample Analyzer, and Analysis Method
A phase analyzer includes a data acquisition unit that acquires spectrum imaging data in which a position on a sample is associated with a spectrum of a signal from the sample; a candidate determination unit that performs multivariate analysis on the spectrum imaging data to determine candidates for the number of phases; a phase analysis unit that creates, for each of the candidates, a phase map group including a number of phase maps corresponding to the number of phases; and a display control unit that causes a display unit to display, for each of the candidates, the phase map group.
Phase Analyzer, Sample Analyzer, and Analysis Method
A phase analyzer includes a data acquisition unit that acquires spectrum imaging data in which a position on a sample is associated with a spectrum of a signal from the sample; a candidate determination unit that performs multivariate analysis on the spectrum imaging data to determine candidates for the number of phases; a phase analysis unit that creates, for each of the candidates, a phase map group including a number of phase maps corresponding to the number of phases; and a display control unit that causes a display unit to display, for each of the candidates, the phase map group.
PARTICLE-INDUCED X-RAY EMISSION (PIXE) USING HYDROGEN AND MULTI-SPECIES FOCUSED ION BEAMS
Practical implementation of Particle-Induced X-ray Emission (PIXE) on a focused ion beam apparatus or on a dual-beam apparatus comprising both focused-ion beam and scanning microscopy capabilities is described. Accordingly, an analytical method comprises: directing and focusing a beam of ions comprising a mixture of protons and non-hydrogen ions onto a sample, wherein the kinetic energy of ions of the mixture is not greater than 50 kilo-electron-Volts (keV); and detecting and measuring X-rays that are emitted from the sample in response to the impingement of the protons and non-hydrogen ions onto the sample.
Charged particle beam irradiation apparatus and control method
The charged particle beam irradiation apparatus includes: a focused ion beam column; an electron beam column; an electron detector; an image forming unit configured to form an observation image based on a signal output from the electron detector; and a control unit configured to repeatedly perform exposure control in which the focused ion beam column is controlled to expose a cross section of a multilayered sample toward a stacking direction with the focused ion beam, the control unit being configured to perform, every time exposure of an observation target layer at a cross section of the multilayered sample is detected in a process of repeatedly performing the exposure control, observation control in which the electron beam column is controlled to radiate the electron beam, and the image forming unit is controlled to form an observation image of the cross section of the multilayered sample.
METHOD AND SYSTEM FOR NON-DESTRUCTIVE METROLOGY OF THIN LAYERS
A monitoring system and method are provided for determining at least one property of an integrated circuit (IC) comprising a multi-layer structure formed by at least a layer on top of an underlayer. The monitoring system receives measured data comprising data indicative of optical measurements performed on the IC, data indicative of x-ray photoelectron spectroscopy (XPS) measurements performed on the IC and data indicative of x-ray fluorescence spectroscopy (XRF) measurements performed on the IC. An optical data analyzer module analyzes the data indicative of the optical measurements and generates geometrical data indicative of one or more geometrical parameters of the multi-layer structure formed by at least the layer on top of the underlayer. An XPS data analyzer module analyzes the data indicative of the XPS measurements and generates geometrical and material related data indicative of geometrical and material composition parameters for said layer and data indicative of material composition of the underlayer. An XRF data analyzer module analyzes the data indicative of the XRF measurements and generates data indicative of amount of a predetermined material composition in the multi-layer structure. A data interpretation module generates combined data received from analyzer modules and processes the combined data and determines the at least one property of at least one layer of the multi-layer structure.