Molecular Dynamics Simulation Study on the Wetting Behavior of a Graphite Surface Textured with Nanopillars

E-mail: jkjang@pusan.ac.krReceived December 3, 2012, Accepted January 8, 2013Molecular dynamic simulations were performed to examine the wetting behavior of a graphite surface texturedwith nanoscale pillars. The contact angle of a water droplet on parallelepiped or dome-shaped pillars wasinvestigated by systematically varying the height and width of the pillar and the spacing between pillars. Anoptimal inter-pillar spacing that gives the highest contact angle was found. The droplet on the dome-coveredsurface was determined to be more mobile than that on the surface covered with parallelepiped pillars.Key Words : Water droplet, Superhydrophobic surface, Contact angle, MobilityIntroductionSuperhydrophobic surfaces have potential applications aswater repellent glasses,