Subramaniam Anand Bala, Abkarian Manouk, Mahadevan L, Stone Howard A
Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Nature. 2005 Dec 15;438(7070):930. doi: 10.1038/438930a.
Surface tension gives gas bubbles their perfect spherical shape by minimizing the surface area for a given volume. Here we show that gas bubbles and liquid drops can exist in stable, non-spherical shapes if the surface is covered, or 'armoured', with a close-packed monolayer of particles. When two spherical armoured bubbles are fused, jamming of the particles on the interface supports the unequal stresses that are necessary to stabilize a non-spherical shape.
表面张力通过使给定体积的表面积最小化，赋予气泡完美的球形。我们在此表明，如果表面被紧密堆积的单层颗粒覆盖或“装甲”，气泡和液滴可以以稳定的非球形形状存在。当两个球形装甲气泡融合时，界面上颗粒的堵塞支持了稳定非球形形状所需的不均匀应力。
