Broadband acoustic focusing by symmetric Airy beams with phased arrays comprised of different numbers of cavity structures

Qian Jiao¹, Liu Bo-Yang¹, Sun Hong-Xiang^{1, 2, †}, Yuan Shou-Qi^{1, ‡}, Yu Xiao-Zhu¹

(color online) Transverse distributions of acoustic intensity through focus for acoustic lenses with different values of parameter b.