Nanosphere Lithography: A Powerful Method for the Controlled Manufacturing of Nanomaterials

Figure 20

(a) Schematic illustration of depositing gold and silver onto a hexagonally close-packed spheres monolayer at the incidence angles (𝜃) of 15 and −15°, respectively. The incident beam of gold, the incident beam of silver, and the normal direction of the colloidal template are highlighted by yellow, blue, and black arrows, respectively. (b) SEM image of the resulting heterogeneous binary array. The original locations of PS spheres, gold NPs, and silver NPs are highlighted by black circles, yellow triangles, and blue triangles, respectively. The scale bar is 2 μm. “Reprinted with permission from [118]. Copyright (2008) American Chemical Society.”