Fig. 4
From: Liquid–liquid phase separation morphologies in ultra-white beetle scales and a synthetic equivalent
Spectral response versus spinodal characteristic length scale. Representative 2D cross sections in the xy plane for a series of spinodal slabs of varying characteristic length scale a 222 nm, b 325 nm, c 500 nm and d 690 nm. Each slice, regardless of length scale is 5 µm × 20 µm and has a filling fraction of 30% white pixels. e Gr(x) results for the 30:70 spinodal filling fraction for four different characteristic length scales. The dashed lines show the length scales of the Cyphochilus and the L. stigma beetles. f FDTD reflectance results for 5µm × 20 µm 30:70 spinodal optical structures having different characteristic correlation lengths
