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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.

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Citations
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Book ChapterDOI

3D Chemical Imaging of Nanoscale Biological, Environmental, and Synthetic Materials by Soft X-Ray STXM Spectrotomography

TL;DR: In this paper, a Synchrotron-based soft X-ray scanning transmission is applied to 3D chemical imaging using tilt series tomography at multiple photon energies, and examples from a range of nanoscale biological, environmental and materials science are presented.
Journal ArticleDOI

Three dimensional mapping of Fe dopants in ceria nanocrystals using direct spectroscopic electron tomography

TL;DR: This technique is used to investigate the spatial distribution of Fe dopants in Fe:Ceria nanoparticles in 3D and it is shown that the presence of the Fe2+ dopants is correlated with a reduction of the Ce atoms from Ce4+ towards Ce3+.
Journal ArticleDOI

Tailoring Directive Gain for High-Contrast, Wide-Viewing-Angle Organic Light-Emitting Diodes Using Speckle Image Holograpy Metasurfaces

TL;DR: The experimental and theoretical results provide the direct proofs that the SIH metasurface can play very important roles not only in releasing the trapped energy flow insides the devices but also in tailoring the wavefronts to the preferred patterns due to its "regional orientation" k-vectors patterns.
References
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Journal ArticleDOI

Representation of a Function by Its Line Integrals, with Some Radiological Applications

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
Journal ArticleDOI

Iterative methods for the three-dimensional reconstruction of an object from projections

TL;DR: It is shown that in general ART produces erroneous reconstructions, and an alternative iterative method is proposed which will give correct reconstructions under certain conditions.
Journal ArticleDOI

Reconstruction of Three Dimensional Structures from Electron Micrographs

TL;DR: General principles are formulated for the objective reconstruction of a three dimensional object from a set of electron microscope images and applied to the calculation of aThree dimensional density map of the tail of bacteriophage T4.
MonographDOI

Three-Dimensional Electron Microscopy of Macromolecular Assemblies

Joachim Frank
TL;DR: In this article, a three-dimensional reconstruction interpretation of 3D images of macromolecules is presented. Butts et al. reconstructed macromoles from micrographs of single macromolcules.
Journal ArticleDOI

Molecular structure determination by electron microscopy of unstained crystalline specimens.

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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