Abstract
A ground-based electrostatic levitation equipment that can levitate a liquid drop under terrestrial condition is developed to understand the oscillatory motion up to large-amplitude. Levitation of water drops with a few millimeters in diameter has been achieved. We were able to control the oscillation mode whose number was m = 2 and the oscillatory motion up to large-amplitude, and induce drop rotation by imposing an acoustic torque. Preliminary results that demonstrate drop oscillation and amplitude dependence of frequency with rotating and non-rotating liquid drops are presented.
