高精度IPC-205B型扫描隧道显微镜的设计及应用

Design and Application of a New-style High Resolving Capability Scanning Tunneling Microscope

为提高STM的工作效率、解决原始图象难于理解的问题,在一种STM新机型中对硬件设计和软件配备进行了改进。通过引入自动进车、自动停车与锁定装置,实现了进入隧道状态的半自动化。通过借用A/D转换卡的倒T电阻网络,实现了程控快速扫描。配备了独立开发的专用软件用于图象处理,应用此软件处理获得的扫描图象,可以更精确、更形象、更直观的获取样品表面信息。把典型样品的扫描图象与已有知识和已确认的结果比较,可以判断出新机型的分辨本领为:横向0.1nm,纵向0.01nm。给出了用该机型获得的几种样品的扫描图象。

A new-style STM is presented. With its automatic advancing, braking and locking devices, it can achieve the tunneling state semi-automatically. Scanning programmed makes it work more quickly. A special software is used to manipulate the imagines. This gives us a better way to know the information of the surface of the specimen. By comparing typical images obtained with the acknowledged ones, its resolving capability given transverse is 0.1 nm, and vertical is 0.01 nm. Several images are given as samples.