A general method for large-scale fabrication of Cu nanoislands/dragonfly wing SERS flexible substrates

Wang Yuhong¹, Wang Mingli^{1, †}, Shen Lin², Zhu Yanying¹, Sun Xin¹, Shi Guochao¹, Xu Xiaona¹, Li Ruifeng¹, Ma Wanli³

(color online) Process of decorating Cu on DW. Top-view SEM image of a part of the DW shows that the surface of a DW is composed of multi-column sloping pillars.