Extended Data Fig. 1: Surface stress σxx and σyy of stepped Pt(111) surfaces with respect to the terrace width.
From: Site-specific reactivity of stepped Pt surfaces driven by stress release
Surface stress of Pt[n(111)-(110)] (a) and Pt[n(111)-(100)] (b) with respect to the terrace width n, and the inverse of terrace width, i.e. 1/n, which corresponds to the step density. As a comparison surface stress of Pt(111) is also given. nis the number of atomic rows on the (111) terrace. The presence of steps leads surface stress release in the direction perpendicular to the step edges, which is in the y direction (σyy) for Pt[n(111)-(110)] and x direction (σxx) for Pt[n(111)-(100)], respectively. It is worth noting that surface stress release is proportional to the inverse of terrace width, i.e., step density.
