Resonant oscillations of air bubbles driven by a time varying electric field

摘要

We investigate the effects of a time varying electric field on air bubbles submerged in water. For a sufficiently strong applied field, a large electrical stress, arising from the dielectric nature of water, can violently deform the volume and shape of the submerged bubble.¹ This deformation may drastically alter the internal pressure and polarization of the bubble, potentially lowering the electrical breakdown voltage within its volume. Such a result would have a broad impact on the viability of liquid plasma based technologies, which tend to suffer from prohibitively high voltage requirements.²