受限悬浮液滴的集体振动
Collective vibrations of confined levitating droplets
摘要：
我们报道了一种新型的基于流体的驱动耗散振荡器系统，该系统由在垂直振动的液体浴上弹跳的毫米流体液滴的晶格组成，并被束缚在环形环内。我们表征系统的行为，因为它是通过在浴的振动加速度的逐步增加通电。根据液滴的数量，晶格运动的开始可能采取异相振荡或显著的孤立波状不稳定的形式。理论模型表明，这些行为可能是由于不同的分叉在不稳定的发病。这里提出的结果表明，步行液滴系统作为一个平台，调查波介导的，惯性，非平衡粒子动力学在宏观尺度的潜力和实用性。
英文摘要：
We report a new type of fluid-based driven dissipative oscillator system consisting of a lattice of millimetric fluid droplets bouncing on a vertically vibrating liquid bath and bound within an annular ring. We characterize the system behavior as it is energized through a progressive increase in the bath's vibrational acceleration. Depending on the number of drops, the onset of motion of the lattice may take the form of either out-of-phase oscillations or a striking solitary wave-like instability. Theoretical modeling demonstrates that these behaviors may be attributed to different bifurcations at the onset of instability. The results presented here demonstrate the potential and utility of the walking droplet system as a platform for investigating wave-mediated, inertial, non-equilibrium particle dynamics at the macroscale.
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