arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1009.4615cond-mat.mtrl-sci
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位相板透射电子显微术的物波重建

Object Wave Reconstruction by Phase-Plate Transmission Electron Microscopy

B. Gamm, M. Dries, K. Schultheiss, H. Blank, A. Rosenauer, R. R. Schröder, D. Gerthsen

摘要:

本文介绍了用位相板透射电子显微术重建物体出射波函数的振幅和相位的方法。所提出的方法可以被认为是同轴全息术,并需要三个图像,采取了不同的相移之间的非衍射和衍射电子引起的一个合适的相移设备。该方法适用于任意目标出射波函数和非线性成像。以模拟晶体物体的波函数和用离轴全息术获得的波函数为例,对该方法进行了验证。研究了噪声对波函数重构的影响。

英文摘要:

A method is described for the reconstruction of the amplitude and phase of the object exit wave function by phase-plate transmission electron microscopy. The proposed method can be considered as in-line holography and requires three images, taken with different phase shifts between undiffracted and diffracted electrons induced by a suitable phase-shifting device. The proposed method is applicable for arbitrary object exit wave functions and non-linear image formation. Verification of the method is performed for examples of a simulated crystalline object wave function and a wave function acquired with off-axis holography. The impact of noise on the reconstruction of the wave function is investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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