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力学与实践 ›› 2009, Vol. 31 ›› Issue (5): 85-88.doi: 10.6052/1000-0879-2008-125

• 力学纵横 • 上一篇    下一篇

表面浸润的内在机制:最小作用量原理

刘建林   

  1. 中国石油大学(华东)
  • 收稿日期:2008-03-13 修回日期:2008-07-07 出版日期:2009-10-08 发布日期:2009-10-08

Mechanism of surface wetting: principle of least action

  • Received:2008-03-13 Revised:2008-07-07 Online:2009-10-08 Published:2009-10-08

摘要: 列举了自然界中的种种现象以证明最小作用量的普适性. 同时运用最小作用量原理阐述了表 面浸润现象的本质,并指出能量提法与微分提法对于浸润现象的等价性关系. 运用最小作用 量原理合理地解释了诸如荷叶的超疏水、水黾水面的自由跑跳、液滴的定向运动以 及毛细黏 附等物理现象. 本文也对最小作用量原理的哲学意义作了一些探讨.

关键词: 表面浸润, 超疏水状态, 最小作用量原理, 哲学意义

Abstract: In this paper, a lot of natural phenomena are presented to show the universality of the principle of least action. The essence of surface wetting is illustrated by the principle of least action. At the same time, the energy formulation and differential formulation are proved to be equivalent for surface wetting phenomenon. Some physical phenomena are explained by the principle of least action, such as super-hydrophobic state of the lotus leaf, jumping on water of the water strider, directional motion of the liquid drop and capillary adhesion. Some philosophical meanings are also discussed in this paper.

Key words: surface wetting, super-hydrophobic state, principle of least action, philosophical meaning