The modified Cassie’s equation and contact angle hysteresis

The modified Cassie’s equation and contact angle hysteresis
复制标题

DOI:
10.1007/s00396-012-2748-1
复制
发表时间:
2013-02
影响因子:
2.4
通讯作者:
Xianmin Xu;Xiaoping Wang
Xianmin Xu;Xiaoping Wang
中科院分区:
化学4区
文献类型:
--
作者:
Xianmin Xu;Xiaoping Wang

文献摘要

被引文献

相似文献

在这篇文章中,我们用均匀化的方法得到了一个修正的卡西方程,用于化学图案化表面的润湿。推导表明,有效接触角是接触线上静态接触角的局部平均值,它描述了所有可能的平衡状态,包括系统自由能的局部极小值。通常对应于全局最小值的Cassie状态只是一个特例。然后我们讨论了化学图案化表面上的接触角滞后。
In this paper, we derive a modified Cassie’s equation for wetting on chemically patterned surfaces from a homogenization approach. The derivation reveals that effective contact angle is a local average of the static contact angle along the contact line which describes all possible equilibrium states including the local minimum of the free energy of the system. The usual Cassie’s state which corresponds to the global minimum is only a special case. We then discuss the contact angle hysteresis on chemically patterned surfaces.