Phase reconstruction with simultaneous correction of spherical and astigmatic aberrations by three-dimensional Fourier filtering method

摘要

A phase reconstruction technique in transmission electron microscopy (TEM), called the three-dimensional Fourier filtering method (3D-FFM), was extended to simultaneous correction of spherical aberration and twofold astigmatism. The effect of the aberration correction was confirmed experimentally for a wide spatial frequency range in the corrected through-focus images of an amorphous thin film. As an application of this method, the surface structure of a gold nanoparticle was observed. The aberration-free phase image clearly reconstructed the atomic missing-row structure at the edge of the particle. Copyright (C) 2003 John Wiley Sons, Ltd. [References: 22]