AVS 61st International Symposium & Exhibition
    Tribology Focus Topic Thursday Sessions
       Session TR-ThA

Paper TR-ThA8
Tribological Properties and Effects of Water on Carbon-Based Materials using Molecular Dynamics Simulations

Thursday, November 13, 2014, 4:40 pm, Room 303

Session: Tribology in Unique Environs
Presenter: Marcel Fallet, United States Naval Academy
Authors: M. Fallet, United States Naval Academy
K.E. Ryan, United States Naval Academy
M. Knippenberg, High Point University
P. Mikulski, United States Naval Academy
J.A. Harrison, United States Naval Academy
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Tribological studies of C-based materials have come to the forefront of experimental and computational chemistry with applications for microfluidic devices and tip-based nano-manufacturing. The effects of humidity on friction and adhesion of some carbonaceous materials underscore the need to understand underlying mechanisms. Since it is difficult to determine atomic-scale behavior via experimental methods, molecular dynamics simulations have been employed to examine this behavior. Sliding simulations of non-hydrogenated, ultrananocrystalline diamond (UNCD) surfaces in the presence of water using the qAIREBO potential1 have been performed. This reactive, bond-centric potential can model charge in C, H, and O systems. Hybridization changes, cross-sectional distributions of water, charge distributions, and other results will be presented to better understand the tribological impact of water in these systems.