Abstract

The dynamics of two types of gas filled microbubbles encapsulated with an elastic solid surface layer and immersed in water is examined by numerical evaluation of the numerically stiff Church non-linear differential equation for different state variable representation. The state variables influence the simulation results severely. The maximum amplitude of the oscillating shell radius is more sensitive to pressure and frequency of the driving sound wave than the surface tension. Chirp insonation is superior to broadband insonation for resonance excitation ensembles of microbubbles.

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