Figure 9
Acoustic focusing. (a) Distribution of thirty-one acoustic metafibers along y direction as indicated by their discrete phase shift (thirty-one red hollow dots) resembling the desired phase profile φ(y) (blue line). (b) Photograph of the designed focusing lens. (c) Simulated and measured acoustic pressure field distributions with the acoustic focusing lens illuminated by the normally incident plane wave at 8.0 kHz.
