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) Parameter space diagram spanned by and giving the acoustical scattering cross section under single-frequency, dual-frequency, and tri-frequency acoustic excitations: (a) kHz; (b) kHz; (c) kHz, kHz; (d) kHz, kHz, kHz. The logarithmic bubble radius scale stretches the acoustical scattering cross section for better viewing.