超级行走液滴

Superwalking Droplets.

作者信息

Valani Rahil N, Slim Anja C, Simula Tapio

机构信息

School of Physics and Astronomy, Monash University, Victoria 3800, Australia.

School of Mathematics, Monash University, Victoria 3800, Australia.

出版信息

Phys Rev Lett. 2019 Jul 12;123(2):024503. doi: 10.1103/PhysRevLett.123.024503.

DOI:10.1103/PhysRevLett.123.024503

PMID:31386507

Abstract

A walker is a droplet of liquid that self-propels on the free surface of an oscillating bath of the same liquid through feedback between the droplet and its wave field. We have studied walking droplets in the presence of two driving frequencies and have observed a new class of walking droplets, which we coin superwalkers. Superwalkers may be more than double the size of the largest walkers, may travel at more than triple the speed of the fastest ones, and enable a plethora of novel multidroplet behaviors.

摘要

行走器是一种液滴，它通过液滴与其波场之间的反馈，在相同液体的振荡浴的自由表面上自行推进。我们研究了在两种驱动频率下的行走液滴，并观察到了一类新的行走液滴，我们将其命名为超级行走器。超级行走器的大小可能是最大行走器的两倍以上，速度可能是最快行走器的三倍以上，并能实现大量新颖的多液滴行为。