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Calculated optimal rod-volume fraction of RAD-PCs as a function of the refractive index of the rods. Insets show the PDOS for two cases: one with a photonic pseudogap at refractive index n = 2, and the other with a complete photonic bandgap at n = 3. The threshold for a complete photonic bandgap in these amorphous structures is n ∼ 2.3.
