论文标题
漂浮在悬浮液体下
Floating under a levitating liquid
论文作者
论文摘要
倒置时，已知液体表面会破坏一定尺寸的稳定。但是，垂直摇动可以具有动态稳定效果。当在给定深度以下创建时，这些振荡也可以使气泡沉入液体中。在这里，我们使用这些效果将大量液体悬浮在空气层上方。装载的空气层充当弹簧质量振荡器，可共同扩大浴缸的颤抖。我们实现了半升液体的稳定，宽度高20 cm。我们进一步表明，动态稳定会在下部界面上产生对称的阿基米德原理，好像重力被倒置一样。因此，沉浸式的身体可以在悬浮的液体下倒置。
When placed upside down a liquid surface is known to destabilize above a certain size. However, vertical shaking can have a dynamical stabilizing effect. These oscillations can also make air bubbles sink in the liquid when created below a given depth. Here, we use these effects to levitate large volumes of liquid above an air layer. The loaded air layer acts as a spring-mass oscillator which resonantly amplifies the shaking amplitude of the bath. We achieve stabilization of half a liter of liquid with up to 20 cm width. We further show that the dynamic stabilization creates a symmetric Archimedes' principle on the lower interface as if gravity was inverted. Hence, immersed bodies can float upside down under the levitated liquid.
