Fig. 6 | Nature Communications

Fig. 6

From: Rainbow peacock spiders inspire miniature super-iridescent optics

Fig. 6

Imaging scatterograms and finite element optical simulation. ae Scatterograms from iridescent scales of M. robinsoni (a), M. chrysomelas (b), from 3D printed flat grating (c), prism grating (d), and foil grating (e). The red circles from the centre out indicate 5°, 30°, 60°, 90° accordingly. The black centre of ce is due to the 3D printed samples blocking the near-axis reflection in the scatterometer. Reverse-ordered diffraction patterns are observed in a, b, d, and e (see also insets). Fine banded patterns are observed in d and e only. f, Diagram of finite element optical simulations. gi Results of finite element optical simulations for the 3D printed flat (g), prism (h) and foil (i) gratings. h, i Reverse-ordered diffraction patterns corresponding with d and e. Only i shows increased resolving power (i.e., finer diffraction features)