Figure 5
From: Broadband All-angle Negative Refraction by Optimized Phononic Crystals
Normalized intensity field of a point source and its image across an 8-layer phononic slab at normalized frequency Ω = 0.200 (a), Ω = 0.230 (b) and Ω = 0.237 (c). The dark (light) color denotes low (high) intensity value.
