State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.
Sci Rep. 2012;2:927. doi: 10.1038/srep00927. Epub 2012 Dec 5.
Molecular dynamics simulations were carried out to explore the capillary wave propagation induced by the competition between one upper precursor film (PF) on the graphene and one lower PF on the substrate in electro-elasto-capillarity (EEC). During the wave propagation, the graphene was gradually delaminated from the substrate by the lower PF. The physics of the capillary wave was explored by the molecular kinetic theory. Besides, the dispersion relation of the wave was obtained theoretically. The theory showed that the wave was controlled by the driving work difference of the two PFs. Simulating the EEC process under different electric field intensities (E), the wave velocity was found insensitive to E. We hope this research could expand our knowledge on the wetting, electrowetting and EEC. As a potential application, the electrowetting of the PF between the graphene and the substrate is a promising candidate for delaminating graphene from substrate.
进行了分子动力学模拟，以探索电弹毛细波（EEC）中石墨烯上的一个上预成型薄膜（PF）和基底上的一个下 PF 之间的竞争所引起的毛细波传播。在波传播过程中，下 PF 将石墨烯逐渐从基底上分离开来。通过分子动力学理论研究了毛细波的物理特性，同时从理论上得到了波的频散关系。理论表明，波受两个 PF 的驱动功差控制。模拟不同电场强度（E）下的 EEC 过程，发现波速对 E 不敏感。我们希望这项研究能扩展我们对润湿、电润湿和 EEC 的认识。作为一种潜在的应用，石墨烯和基底之间的 PF 的电润湿是从基底上分离石墨烯的一个有前途的候选方法。
