利用电场控制流体粘附力
Controlling fluid adhesion force with electric fields
摘要：
开发粘合强度可以从外部操纵的粘合剂是一个具有实际和科学意义的课题。在这项工作中，我们提出了一种方法来控制一个经常的流体，如水和/或甘油，通过施加外部电场限制在两个平行的板之间的粘附力。我们的研究结果表明，通过适当地调整由所施加的电场产生的电流的强度和方向，增强或减弱的结合强度的液体样品的可能性。此外，我们验证，对于一个给定的方向的电流，粘附力可以减少到足以使流体失去其粘附性能，并开始施加力，以移动分开的限制板。在这种情况下，我们得到了在不需要外力作用的情况下分离板所需的最小电流的解析表达式。
英文摘要：
Developing adhesives whose bond strength can be externally manipulated is a topic of considerable interest for practical and scientific purposes. In this work, we propose a method of controlling the adhesion force of a regular fluid, such as water and/or glycerol, confined between two parallel plates by applying an external electric field. Our results show the possibility of enhancing or diminishing the bond strength of the liquid sample by appropriately tuning the intensity and direction of the electric current generated by the applied electric field. Furthermore, we verify that, for a given direction of the electric current, the adhesion force can be reduced enough for the fluid to lose its adhesive properties and begin exerting a force to move apart the confining plates. In these circumstances, we obtain an analytical expression for the minimum electric current required to detach the plates without requiring the action of an external force.
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