Wave function reconstruction in HRTEM: The parabola method

被引：115

作者：

deBeeck, MO ^{[1
]}

VanDyck, D ^{[1
]}

Coene, W ^{[1
]}

机构：

[1] PHILIPS RES LABS, NL-5600 JA EINDHOVEN, NETHERLANDS

来源：

ULTRAMICROSCOPY | 1996年 / 64卷 / 1-4期

关键词：

D O I：

10.1016/0304-3991(96)00058-7

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The non-linear parabola method for wave function reconstruction in HRTEM is presented in detail. It consists of an iterative procedure in which the linear and non-linear contributions to HRTEM images of a defocus series are optimally separated which will allow to benefit from a fast linear reconstruction scheme in which the non-linear contribution is corrected for in a self-consistent way. The method has proven to be a fast and workable algorithm for quantitative wave function reconstruction with direct resolution improvement. Results are shown for wave function reconstruction on experimentally acquired defocus series for a 200 keV FEG-TEM with a point-to-point resolution of 0.24 nm. In the reconstructed wave functions the resolution could clearly be enhanced up to 0.14 nm.

引用

页码：167 / 183

页数：17

共 44 条

[1] PHASE RETRIEVAL THROUGH FOCUS VARIATION FOR ULTRA-RESOLUTION IN FIELD-EMISSION TRANSMISSION ELECTRON-MICROSCOPY [J].