Figure 9.
Effects of medium viscoelasticity on the bubble dynamics and inertial cavitation threshold. Maximum expansion ratio of a 1 μm lipid-coated microbubble at different elasticities and viscosities of the surrounding medium (a) without (model II) and (b) with (model IV) considering bubble−bubble interactions (pA = 400 kPa, R10 = 1 μm, R20 = 5 μm and di,j = 20 μm), and (c) represents the difference between them. (d–f) represent the corresponding results of inertial cavitation threshold.