FE-CLIP: A tool for the calculation of the solid–liquid interfacial free energ

2020-04-10T07:20:23Z (GMT) by Masayuki Uranagase Shuji Ogata
In manufacturing industries, predicting the work of adhesion between complex solid and liquid surfaces has become essential. FE-CLIP offers a routine for evaluating the work of adhesion between solid and liquid surfaces by calling a subroutine from a molecular dynamics simulation code. When FE-CLIP is applied to the solid–liquid interface, liquid molecules are separated from the solid surface according to its shape using a set of spherical potentials. This is efficient when applied to the solid surfaces with complex structures such as polymer-grafted surfaces. An adaptive scheme for updating the parameters contained in the potential and automatic refinement of integration points are introduced to facilitate the application of FE-CLIP to various solid–liquid interfaces. We applied FE-CLIP to the separation of water from a polymer-grafted gold surface to demonstrate that the proposed method gives reliable results by suppressing the variation of the free energy gradient, which is important for accurate numerical integration.

License

CC BY 4.0