World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aobaku, Sendai 980-8577, Japan.
J Am Chem Soc. 2010 Oct 6;132(39):13657-9. doi: 10.1021/ja106231x.
Monatomic steps with a height of 0.25 nm on ultraflat Au(111) surfaces during electrochemical dissolution can be seen for the first time by a laser confocal microscope combined with a differential interference contrast microscope (LCM-DIM). Atomic force microscopy images were acquired in the same area in order to confirm that the step lines observed by LCM-DIM are mostly monatomic steps with the height of 0.25 nm. Successively recorded LCM-DIM images indicated that the anodic dissolution of Au(111) takes place only at step edges in solutions containing chloride anions at potentials near the onset of anodic current.
首次通过激光共聚焦显微镜与微分干涉对比显微镜（LCM-DIM）观察到超光滑 Au(111) 表面电化学溶解过程中的原子台阶，高度为 0.25nm。在同一区域获取原子力显微镜图像，以确认 LCM-DIM 观察到的台阶线主要是高度为 0.25nm 的原子台阶。连续记录的 LCM-DIM 图像表明，在含氯离子的溶液中，在阳极电流起始电位附近的电位下，Au(111) 的阳极溶解仅发生在台阶边缘。
