Table 1.

Parameters used in the theoretical calculation

Notation		Value used
Bubble properties
Sf	shell viscosity (friction, kg/s)	0.15 × 10−6 (42)
Sp	shell elasticity (stiffness, N/m)	1.64 (42)
γ	polytropic exponent of gas	1.06 (29)
κ1	compressibility (m2/N)	5 × 10−7 (24)
Surrounding medium
ρ	density (kg/m3)	998 (43)
σ	surface tension (N/m)	0.072
μ	viscosity (Pa·s)	0.0007 (43)
c	speed of sound (m/s)	1500
Others
P0	ambient pressure (Pa)	101 × 103