论文部分内容阅读
在过去几年中,电子显微镜在其分辨率和从图象中所取得的信息数量两方面取得的进步,大大扩大了它们在化学研究中的应用.技术上现在已能制造出图象的分辨率接近原子间距的透射电子显微镜.事实上,对凝聚体中原子的分辨看来是指日可待了.现在甚至给单个隔离开的重原子照相都成为可能的事,而且能够分析大小几立方埃空间内的化学成份,甚至均匀光滑的表面也能产生明显的对比.
In the past few years, the progress made by the electron microscope in both its resolution and the amount of information obtained from the images has greatly expanded their use in chemical research, and is technically now capable of producing image resolution In fact, the resolution of atoms in the aggregates seems to be around, and even now it is possible to take a picture of a single isolated heavy atom, and to be able to analyze the size of a few cubic angstroms of space The chemical composition, even a smooth surface can produce significant contrast.