Diffraction contrast tomography
Web10 rows · Diffraction Contrast Tomography (DCT) DCT is a near-field diffraction-based imaging technique ... WebSep 11, 2024 · QPI contains the coupled information of sample thickness and RI contrast. Optical diffraction tomography (ODT) provides the 3D RI distribution of a sample by combining multiple 2D QPI measurements ...
Diffraction contrast tomography
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WebFeb 3, 2024 · Three new advanced acquisition strategies for lab-based diffraction contrast tomography are presented. They are named Helical Phyllotaxis, Helical Phyllotaxis … http://www.ctlab.geo.utexas.edu/x-ray-diffraction-computed-tomography-dct/
WebMay 9, 2024 · A three-dimensional grain mapping technique for polycrystalline materials, called X-ray diffraction contrast tomography (DCT), was developed at SPring-8, which is the brightest synchrotron radiation facility in Japan. The developed technique was applied to an austenitic stainless steel. The shape and location of grains could be determined by … WebOct 19, 2024 · An important leap forward for the 3D community is the possibility to perform non-destructive 3D microstructural imaging in the home laboratories. This possibility is profiled by a recently developed technique—laboratory X-ray diffraction contrast tomography (LabDCT). As diffraction spots in LabDCT images are the basis for 3D …
WebJun 17, 2024 · Optical diffraction tomography (ODT) is a computational imaging technique based on refractive index (RI) contrast. Its application for microscopic imaging of weakly absorbing and scattering samples has been demonstrated by using a specially designed holographic microscope with angular scanning of the coherent sample illumination … WebDec 21, 2024 · Lyngby, 2800, Denmark. Laboratory diffraction contrast tomography (LabDCT) is a novel technique for non-destructive imaging of the grain structure within …
WebFeb 3, 2024 · Three new advanced acquisition strategies for lab-based diffraction contrast tomography are presented. They are named Helical Phyllotaxis, Helical Phyllotaxis Raster, and Helical Phyllotaxis HART and enable grain mapping of longer, larger, high-aspect ratio samples. The implementation of these advanced acquisition strategies combines a …
WebJun 1, 2024 · Laboratory diffraction contrast tomography (LabDCT) enables a user to reconstruct 3D grain maps of polycrystalline materials non-destructively. For each grain, the morphology and crystallographic ... franklin d roosevelt as a babyWebJul 30, 2015 · Carl Zeiss X-ray Microscop y has launched a laboratory-based diffraction contrast tomography (DCT) system for 3D grain imaging. The LabDCT advanced imaging module enables a handshake between theoretical and practical worlds for predictive materials design by visualizing grain orientations in 3D. Originally developed at a limited … franklin d roosevelt high school txWebJan 1, 2016 · Diffraction contrast tomography The DCT scan was done using a monochromatic wide beam with a cross-section of 1.0 × 0.350 mm and an energy of 41.7 keV. Diffraction images were recorded with a FReLoN 2k x 2k X-ray detector with an effective pixel size of 1.4 µm positioned normal to the incident beam at a sample-to … franklin d. roosevelt impact on ww2Web142 Microscopy, 2024, Vol. 69, No. 3 research with a particular focus on diffraction contrast ET for crystalline microstructures (superlat-tice domains and dislocations) including a demonstration of in situ dislocation tomography. Keywords: electrontomography,three-dimensional(3D),diffractioncontrast,domainstructure,dislocation,specimenholder … franklin d roosevelt first inaugural addressWebMar 19, 2009 · X-ray diffraction contrast tomography (DCT) is a technique for mapping grain shape and orientation in plastically undeformed polycrystals. In this paper, we … bleach beach artWebJ. Appl. Cryst. (2008). 41, 302–309 Wolfgang Ludwig et al. X-ray diffraction contrast tomography I 303 Figure 1 The acquisition geometry used for diffraction contrast … franklin d roosevelt important things he didWebFeb 28, 2024 · In contrast to the continuum of projections present in conventional attenuation tomography, the diffraction spot projections are discrete and dictated by crystallography and also depend on the ... franklin d roosevelt home and museum