使用多探测器阵列开发用于扫描透射电子显微镜波场恢复的并行检测与处理系统。

Development of a parallel detection and processing system using a multidetector array for wave field restoration in scanning transmission electron microscopy.

作者信息

Taya Masaki, Matsutani Takaomi, Ikuta Takashi, Saito Hidekazu, Ogai Keiko, Harada Yoshihito, Tanaka Takeo, Takai Yoshizo

机构信息

Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka, Japan.

出版信息

Rev Sci Instrum. 2007 Aug;78(8):083705. doi: 10.1063/1.2778622.

DOI:10.1063/1.2778622

PMID:17764327

Abstract

A parallel image detection and image processing system for scanning transmission electron microscopy was developed using a multidetector array consisting of a multianode photomultiplier tube arranged in an 8 x 8 square array. The system enables the taking of 64 images simultaneously from different scattered directions with a scanning time of 2.6 s. Using the 64 images, phase and amplitude contrast images of gold particles on an amorphous carbon thin film could be separately reconstructed by applying respective 8 shaped bandpass Fourier filters for each image and multiplying the phase and amplitude reconstructing factors.

摘要

利用由以8×8方阵排列的多阳极光电倍增管组成的多探测器阵列，开发了一种用于扫描透射电子显微镜的并行图像检测和图像处理系统。该系统能够在2.6秒的扫描时间内同时从不同散射方向获取64幅图像。利用这64幅图像，通过对每幅图像应用各自的8形带通傅里叶滤波器并乘以相位和幅度重建因子，可以分别重建非晶碳薄膜上金颗粒的相位和幅度对比图像。