Rectified mass diffusion of gas bubbles in liquids under acoustic field with dual frequencies

In this letter, rectified mass diffusion of gas bubbles in liquids under acoustic field with dual frequencies is theoretically investigated. Comparing with gas bubbles under single-frequency acoustic field, if the acoustic pressure amplitude is above a certain value determined in the present work, a wider range of bubbles can grow through rectified mass diffusion with more rapid growth rate under dual-frequency acoustic field.