Nature CommunicationsStructural origin of hierarchical chirality in Pt@Au nanostructures with step-rich surfacesXiaoxi LuanFengxia WuYu TianFenghua LiWenping GaoGuobao XuGuangchao ZhengWing-Leung WongKwok-Yin WongWenxin Niu2026-04-30Full textDOI https://doi.org/10.1038/s41467-026-72761-6