Figure 1.

Optical images and internal microstructure of colloidal crystals enhanced with graphene. a) Photographs of wet colloidal dispersions used for photonic crystals (PC) (left) and with graphene for PC‐G (right). Representative photographs of fabricated colloidal photonic crystals: b) top‐view of a pristine PC; c) top‐view of a PC‐G; d) the same PC‐G when observed from a different viewing angle. AFM topographic images of e,f) PC‐G cross‐section showing the layered structure; g) height and h) phase images of the top surface of PC‐G showing graphene flakes (in false color) present in the interstitial sites.