Journal ArticleDOI
Electron ptychography dose reduction using Moiré sampling on periodic structures.
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TLDR
In this paper , a smart sampling strategy was proposed to reduce the electron dose on periodic crystalline samples, which allowed dose reduction by orders of magnitude on periodic crystaline samples with high data redundancy requirement.About:
This article is published in Ultramicroscopy.The article was published on 2022-05-01. It has received 2 citations till now. The article focuses on the topics: Medicine & Ptychography.read more
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Resolution-enhanced reflection ptychography with axial distance calibration
TL;DR: In this paper , a straightforward axial distance calibration approach was proposed to improve the reconstructed resolution in reflection ptychography, where a uniform Fraunhofer-shaped diffraction was transformed from the tilted distorted scatterings by a coordinate transform at a coarse estimate of axial distances.
References
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Journal ArticleDOI
Communication in the presence of noise
TL;DR: A method is developed for representing any communication system geometrically and a number of results in communication theory are deduced concerning expansion and compression of bandwidth and the threshold effect.
Journal ArticleDOI
EMS-A software package for electron diffraction analysis and HREM image simulation in materials science
TL;DR: EMS as mentioned in this paper is a set of computer programs which have been developed not only for the simulation and analysis of high-resolution Electron Microscopy images, but also for the analysis of diffraction patterns.
Journal ArticleDOI
An improved ptychographical phase retrieval algorithm for diffractive imaging.
Andrew Maiden,John M. Rodenburg +1 more
TL;DR: The PIE is extended so that the requirement for an accurate model of the illumination function is removed and the technique has been shown to be robust to detector noise and to converge considerably faster than support-based phase retrieval methods.
Journal ArticleDOI
A phase retrieval algorithm for shifting illumination
TL;DR: In this paper, a method of iterative phase retrieval that uses measured intensities in the diffraction plane to solve the phase problem in a way that bypasses the problem of lens aberration was proposed.
Journal ArticleDOI
Phase retrieval from the magnitude of the Fourier transforms of nonperiodic objects
TL;DR: The authors' computer phasing experiments accurately retrieved the phase from the magnitude of the Fourier transforms of 2D and 3D complex-valued objects by using positivity constraints on the imaginary part of the objects and loose supports, with the oversampling factor much less than 4 for 2d and 8 for 3D objects.
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