STM研究的新进展

STM ACTIVITY AT THE INSTITUTE OF CHEMISTRY, CAS

STM是80年代初期发明的一种用于表面结构研究的新技术(注:扫描隧道显微技术和扫描隧道显微镜的英文缩写都是STM),它能观察物质表面原子的几何排列和表面形貌,配合扫描隧道谱学(scanning tunneling spectroscopy)原理,还能够获取表面价键。

We have built a scanning tunneling microscope (STM) and an atomic force microscope (AFM). So far we have studied the surface topographs of organic conductors (BEDT-TTF) Ag_X (SCN)_2, Polyaniline film,high T_c superconduc- tors, HgCl_2 and Pc_2Lu adsorbed on the surfaces of HOPG, rutile, organic ferromagnetic single crystal, phosphatidylcholine bilayers, insuline and denatured DNA, etc. The development of STMs for operation in ultra-high vacuum and low temperature is well under way.