Woo Kyun Kim | Department of Mechanical and Materials Engineering
My research area is the atomistic modeling and computer simulation of materials systems. Using atomistic simulation methods such as molecular dynamics (MD) I have modeled nanoindentation and AFM (Atomic Force Microscope) experiments. Furthermore, I have developed “hyper-QC” that can simultaneously extend length and time scales of conventional atomistic models by coupling hyperdynamics and quasicontinuum (QC), two leading temporal and spatial multiscale methods. Hyper-QC enables to simulate larger systems for longer durations than fully-atomistic unaccelerated models.
Figure 1. An atomistic model for the AFM experiment of oxidized silicon surfaces.
Figure 2. Illustration of the AFM modeled by the hyper-QC method. As shown, the region near the contact between the tip and the substrate is fully atomistic while the other regions are modeled by the FEM mesh.