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) (a) Transmission spectra and (b) transmitted phase delays with different numbers of cavity structure with straight channels.