An acoustic Maxwell’s fish-eye lens based on gradient-index metamaterials

Yuan Bao-guo^{1, 2}, Tian Ye¹, Cheng Ying^{1, 3, †,}, Liu Xiao-jun^{1, 3, ‡,}

Distribution of the simulated acoustic pressure fields for the AMFE lens: (a) f = 1 kHz, (b) f = 1.5 kHz, and (c) f = 2 kHz, in which the solid circle indicates the boundary of the lens.