The Study of Molecular Friction on Surfaces

我们研究了分子在表面上的摩擦，它与分子的吸附过程和扩散过程有关，因此从基础科学的角度来看是非常重要的。我们尝试用超声速分子束仪、光谱学方法和扫描隧道显微技术来观察分子摩擦的机理。由于NO在Pt表面的反应与许多催化反应有关，因此我们观察到了吸附在铂单晶阶梯表面的NO分子的迁移，从而可以观察到NO迁移的许多现象，并获得了迁移的许多性质。此外，我们还开发了利用扫描隧道显微镜在微观上检测分子在表面上的迁移的技术。

We have studied the friction applied to the molecules on surfaces, which is related with adsorption processes and diffusion processes of molecules so that is very important in the view point of basic sciences. We have tried to observe the mechanisms of molecular friction by using supersonic molecular beam apparatus, spectroscopic method and scanning tunneling microscopy techniques. We have observed migration of NO molecule adsorbed on stepped surface of platinum single crystal since NO reactions on Pt surfaces are related with many catalytic reactions, then, we could observe many phenomena of NO migration and obtain many properties of the migration. In addition, we have develop the technique of using the scanning tunneling microscopy to detect microscopically the migration of molecules on surfaces.