Journal ArticleDOI
Electron tomography and holography in materials science
TLDR
An overview of the techniques of electron tomography and electron holography is presented and their capabilities with the aid of case studies that span materials science and the interface between the physical sciences and the life sciences are demonstrated.Abstract:
The rapid development of electron tomography, in particular the introduction of novel tomographic imaging modes, has led to the visualization and analysis of three-dimensional structural and chemical information from materials at the nanometre level. In addition, the phase information revealed in electron holograms allows electrostatic and magnetic potentials to be mapped quantitatively with high spatial resolution and, when combined with tomography, in three dimensions. Here we present an overview of the techniques of electron tomography and electron holography and demonstrate their capabilities with the aid of case studies that span materials science and the interface between the physical sciences and the life sciences.read more
Citations
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Journal ArticleDOI
Graph-based simulated annealing: a hybrid approach to stochastic modeling of complex microstructures
TL;DR: In this paper, a stochastic model is proposed for the efficient simulation of complex three-dimensional microstructures consisting of two different phases, and the model is based on a hybrid approach, where in the first step a graph model is developed using ideas from Stochastic geometry, and then the microstructure model is built by applying simulated annealing to the graph model.
Journal ArticleDOI
A multiresolution approach to discrete tomography using DART.
TL;DR: A multiresolution version of DART (MDART) is proposed, in which the reconstruction starts on a coarse grid with big pixel (voxel) size and is then resampled on a finer grid and used as an initial point for a subsequent DART reconstruction.
Journal ArticleDOI
Snapshot 3D Electron Imaging of Structural Dynamics
TL;DR: A method that enables the determination of 3D atomic positions with high precision from single high resolution electron microscopic images of graphene that show dynamic processes such as defect formation and evolution is described.
Journal ArticleDOI
Small-Angle Scattering Analysis of Empty or Loaded Hierarchical Porous Materials
TL;DR: In this paper, a general analysis of X-ray scattering by this type of material is proposed, assuming that each structural level is statistically independent from the others and has a distinct characteristic length scale.
Journal ArticleDOI
Imaging Three-Dimensional Elemental Inhomogeneity in Pt–Ni Nanoparticles Using Spectroscopic Single Particle Reconstruction
Yi-Chi Wang,Thomas J. A. Slater,Gerard M. Leteba,Alan M. Roseman,Christopher Race,Neil P. Young,Angus I. Kirkland,Candace Lang,Sarah J. Haigh +8 more
TL;DR: The ability to gain evidence of local surface enrichment that varies with the crystallographic orientation of facets and vertices is expected to provide significant insight toward the development of nanoparticles for sensing, medical imaging, and catalysis.
References
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TL;DR: In this paper, a method for finding a real function in a finite region of a plane given its line integrals along all straight lines intersecting the region was given, and the solution found is applicable to three problems of interest for precise radiology and radiotherapy: (1) the determination of a variable x-ray absorption coefficient in two dimensions, (2) the distribution of positron annihilations when there is an inhomogeneous distribution of the positron emitter in matter, and (3) a variable density of matter with constant chemical composition, using the energy loss
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Journal ArticleDOI
Reconstruction of Three Dimensional Structures from Electron Micrographs
D. J. De Rosier,Aaron Klug +1 more
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MonographDOI
Three-Dimensional Electron Microscopy of Macromolecular Assemblies
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TL;DR: The projected structures of two unstained periodic biological specimens, the purple membrane and catalase, have been determined by electron microscopy to resolutions of 7 A and 9 A, respectively.
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