Bubble acoustical scattering cross section under multi-frequency acoustic excitation

Shi Jie^{1, 2}, Yang De-sen^{1, 2}, Zhang Hao-yang^{1, 2, †}, Shi Sheng-guo^{1, 2}, Li Song^{1, 2}, Hu Bo^{1, 2}

(color online) The acoustical scattering cross section under single-frequency (first column), dual-frequency (second column), and tri-frequency (third column) acoustic excitations versus both excitation frequency f and equilibrium bubble radius by numerical solution. (a) , (b) , (c) , (d) , (e) . The logarithmic bubble radius scale and frequency f scale stretch the acoustical scattering cross section for better viewing.