Incident angle dependence of reactions between graphene and hydrogen atom by molecular dynamics simulation

Details Incident angle dependence of reactions between graphene and hydrogen atom by molecular dynamics simulation Incident angle dependence of reactions between graphene and hydrogen atom by molecular dynamics simulation

2009-12-14

arxiv.org/abs/0912.2593v1

Physics

Plasma Physics

4 pages, 7 figures

Scientific paper

Incident angle dependence of reactions between graphene and hydrogen atoms are obtained qualitatively by classical molecular dynamics simulation under the NVE condition with modified Brenner reactive empirical bond order (REBO) potential. Chemical reaction depends on two parameters, i.e., polar angle $\theta$ and azimuthal angle $\phi$ of the incident hydrogen. From the simulation results, it is found that the reaction rates strongly depend on polar angle $\theta$. Reflection rate becomes larger with increasing $\theta$, and the $\theta$ dependence of adsorption rate is also found. The $\theta$ dependence is caused by three dimensional structure of the small potential barrier which covers adsorption sites. $\phi$ dependence of penetration rate is also found for large $\theta$.

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