Fig. 8. Measured reflectance spectra (blue) and Fourier predicted reflectance
spectra (orange) for the structurally coloured butterfly nanostructures
illustrated in Fig. 4. (A)
Urania fulgens blue, (B) Urania fulgens green, (C)
Papilio ulysses, (D) Papilio zalmoxis, (E) Parides
sesostris, (F) Troides brookiana.