A levitated glycerol droplet supported by an acoustic standing wave, when subject to modulated field at frequency on the order of 150 Hz, behaves as a solid plate and exhibits flexural bending resonance rather than the conventional equatorial star-shape oscillations. Three oscillation modes are observed: seesaw, saddleback, and monkey saddle with the increasing energy levels. The finite element analysis generates droplet shapes consistent with the experimental observation and yields apparent plate flexural rigidity in terms of surface tension and aspect ratio of plate thickness to diameter. High viscosity leads to the plate-like behavior of the droplet.

中文翻译：

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声悬浮甘油液滴的弯曲弯曲共振

由声驻波支撑的悬浮甘油液滴，当受到频率为 150 Hz 左右的调制场时，表现为实心板并表现出弯曲弯曲共振，而不是传统的赤道星形振荡。观察到三种振荡模式：随着能量水平的增加，跷跷板、马鞍形和猴鞍形。有限元分析产生与实验观察一致的液滴形状，并在表面张力和板厚与直径的纵横比方面产生明显的板弯曲刚度。高粘度导致液滴的板状行为。