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 instantaneous bubble radius under the single-frequency acoustic excitation (solid line), dual-frequency acoustic excitation (dashed line), tri-frequency acoustic excitation (dash-dotted line) and the corresponding radiation pressure versus time for (a) 10 μm, (b) 20 μm, (c) 50 μm, and (d) 100 μm bubbles. kHz, kHz, kHz. , .