Figure 5.

Cycle averaged bubble tip pressure drop ΔP̄_tip (a) and curvature ${\stackrel{‒}{\kappa }}_{tip}$ (b). Symbols indicate the dimensionless frequency where Ca_Ω = Ca_M, data to the right of symbols indicate the unsteady regime and the presence of reverse flow. Inset region is representative of the interfacial geometry when κ_tip < 0.