Instituto de Física, Universidad Nacional Autónoma de México, P. O. Box 20-364, Mexico City 04510, Mexico.
Phys Rev Lett. 2013 Nov 27;111(22):226102. doi: 10.1103/PhysRevLett.111.226102.
The theoretically predicted vanishment of the macroscopic contact angle hysteresis is found experimentally along with a small but finite force of adhesion (F(Ad)≈-0.5 μN) that, unexpectedly, is independent of the history of the preload. Our results agree with the prediction of a model in which the surface tension of the liquid provides the counterpart of the restoring force of an elastic solid, evidencing that the dewetting of a liquid in the absence of strong pinning points is equivalent to the detachment of an elastic solid.
理论上预测的宏观接触角滞后现象消失，同时实验发现存在一个很小但有限的附着力（F(Ad)≈-0.5 μN），出乎意料的是，它与预加载的历史无关。我们的结果与一个模型的预测一致，该模型中液体的表面张力提供了类似于弹性固体恢复力的对应物，这表明在没有强钉扎点的情况下液体的去湿相当于弹性固体的分离。
