Figure 7 : Constructing Model II.

From: Design of a structure with low incident and viewing angle dependence inspired by Morpho butterflies

Figure 7

(a) schematic of Model II using the PSO algorithm; 10 trees are simulated by adjusting ΔL1 ~ ΔL20 for each case; the algorithm is run 50 times, and the results are averaged; (b) reflections versus viewing angle for N = 1 and N = 50; and (c) fitness value versus number of iterations for N = 1.