“…Monodispersed colloidal spheres can self-assemble into highly ordered structures, which have a variety of applications in color displaying and chemical sensing (Cui et al, 2009;Gu, 2014;Hou et al, 2014;Shen et al, 2012;Wang et al, 2005Wang et al, , 2012. Particularly, ordered arrays of colloidal nanoparticles are interesting as photonic crystals that can be used for manipulating light in optical devices, full-color displays, biological sensors, and other fields (Liu et al, 2014;Shen et al, 2012).…”