Droplets should exhibit various dynamical phenomena when adhered to a surface; not all of them are realized in classical fluids. Visualization of superfluid ^{4}He pendant droplets revealed that the droplets were horizontally translated on a flat surface, bouncing off at the corner, known as the Noether mode that reflects the translation symmetry. The droplets exhibited another mode in vertical oscillations with high amplitude that included oscillation of the droplet edge. The oscillation period remained constant even as the droplets grew, exhibiting an anomalously weak size dependence. The high mobility of the droplet edges owing to the superfluidity was a crucial factor for the appearance of these anomalous modes.

中文翻译：

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超流体悬垂液滴的异常振荡模式。


液滴粘附在表面上时应表现出各种动力学现象;并非所有 API 都是在经典流体中实现的。超流体 ^{4}He 悬垂液滴的可视化显示，液滴在平面上水平平移，在拐角处反弹，称为反映平移对称性的 Noether 模式。液滴在高振幅的垂直振荡中表现出另一种模式，包括液滴边缘的振荡。即使液滴生长，振荡周期也保持不变，表现出异常微弱的尺寸依赖性。由于超流体性，液滴边缘的高迁移率是这些异常模式出现的关键因素。