Both the 12 adatoms and the 6 rest atoms of the Si(111)-(7×7) unit cell are obtained clearly with the highest resolution to date using ultrahigh vacuum scanning tunneling microscopy (STM).
用超高真空扫描隧道显微镜首次同时清晰地分辨出Si(111) (7×7)表面每个元胞中的 12个顶戴原子和 6个静止原子,这 6个静止原子的亮度与无层错半元胞内中心顶戴原子的亮度基本相同。