Broadband acoustic focusing by symmetric Airy beams with phased arrays comprised of different numbers of cavity structures
Qian Jiao1, Liu Bo-Yang1, Sun Hong-Xiang1, 2, †, Yuan Shou-Qi1, ‡, Yu Xiao-Zhu1
       

(color online) Spatial distributions of intensity field for Airy beams with parameter (a)b = 21, (b) 23, and (c) 24 induced by acoustic lenses with parameter (d) b = 21, (e) 23, and (f) 24 at 7.95 kHz.