Fig. S6.

Effect of nanoparticle addition, concentration, and position within the photonic ball on the structural color, examined by one-dimensional (1D) transfer matrix simulations. (A and B) Effect of position and concentration of gold nanoparticles within the photonic structure. (A) Gold nanoparticles placed within the periodic structure; (B) gold nanoparticles placed in the disordered region underneath the periodic structure. (C) Dependence of the extracted red color saturation on the amount of gold nanoparticles added to the photonic structure.