High-frequency acoustic droplet vaporization is initiated by resonance
Guilllaume Lajoinie,
Tim Segers,
Michel Versluis
Abstract:Vaporization of low-boiling point droplets has numerous applications in combustion, process engineering and in recent years, in clinical medicine. However, the physical mechanisms governing the phase conversion are only partly explained. Here, we show that an acoustic resonance can arise from the large speed of sound mismatch between a perfluorocarbon microdroplet and its surroundings. The fundamental resonance mode obeys a unique relationship kR ∼ 0.65 between droplet size and driving frequency that leads to … Show more
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