用电子衍射成像实现波场重建和相位成像

IF 1.8 4区 工程技术
Microscopy Pub Date : 2020-11-01 DOI:10.1093/jmicro/dfaa063
Jun Yamasaki
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引用次数: 0

摘要

在电子衍射成像中,样品的相位图像是通过迭代计算从其衍射强度重建的。该方法的原理是基于样品传输的真实空间波场与其Fraunhofer衍射波场之间的傅立叶变换关系。自1972年Gerchberg的实验工作以来,已经取得了各种进展,大大提高了重建相位图像的质量,并扩大了该方法的适用范围。在这篇综述文章中,详细解释了衍射成像的原理、使用电子束的各种实验过程以及在特定样品中的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Wave field reconstruction and phase imaging by electron diffractive imaging
In electron diffractive imaging, the phase image of a sample is reconstructed from its diffraction intensity through iterative calculations. The principle of this method is based on the Fourier transform relation between the real-space wave field transmitted by the sample and its Fraunhofer diffraction wave field. Since Gerchberg’s experimental work in 1972, various advancements have been achieved, which have substantially improved the quality of the reconstructed phase images and extended the applicable range of the method. In this review article, the principle of diffractive imaging, various experimental processes using electron beams and application to specific samples are explained in detail.
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来源期刊
Microscopy
Microscopy 工程技术-显微镜技术
自引率
11.10%
发文量
0
审稿时长
>12 weeks
期刊介绍: Microscopy, previously Journal of Electron Microscopy, promotes research combined with any type of microscopy techniques, applied in life and material sciences. Microscopy is the official journal of the Japanese Society of Microscopy.
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