Photonic crystals with an eye pattern similar to peacock tail feathers

Abstract

Afacile fabrication of photonic crystals (PCs)with an eye pattern similar to peacock tail feathers has been demonstrated by self-assembly of colloidal particles in a sandwichmode. The sandwich mode is formed by superhydrophilic flat substrate sandwiching the poly(styrene-methyl methacrylate-arylic acid) (Poly(St-MMA-AA)) latex suspension (2 wt%) by the hydrophobic one. The patterns are characterized by optical microscopy images, reflection spectra, and the relative scanning electronic microscope images. This work will provide beneficial help for the understanding of the self-assembly process of colloidal crystals.