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Comparison of Hydrogen Adsorption on Diamond and Graphite Surfaces

机译:金刚石和石墨表面氢吸附的比较

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By a classical molecular dynamics (CMD) simulation with a modified Brenner's reactive empirical bond-order (REBO) potential, we found that graphite with zigzag (1010) and armchair (1120) edge states is destroyed more easily than other structures, i.e., graphite with the (0001) surface, and diamond with the (100), (111), (120), and (110) surfaces. Experimental results indicated that graphite is eroded under hydrogen atom injection with Ein = 0.3 eV, and that diamond is not eroded under the same conditions. Our simulation results are consistent with these experimental results. We also reveal the temperature and saturation dependence of the surface structure of carbon crystals.
机译:通过使用改进的布伦纳反应性经验键序(REBO)势的经典分子动力学(CMD)模拟,我们发现具有锯齿形(1010)和扶手椅(1120)边缘态的石墨比其他结构(即石墨)更容易被破坏(0001)表面,以及(100),(111),(120)和(110)表面的菱形。实验结果表明,在氢原子注入E = 0.3 eV时,石墨被腐蚀,而在相同条件下金刚石不被腐蚀。我们的仿真结果与这些实验结果一致。我们还揭示了碳晶体表面结构的温度和饱和度依赖性。

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