首页> 外文期刊>Journal of the Mechanics and Physics of Solids >The Gaussian stiffness of graphene deduced from a continuum model based on Molecular Dynamics potentials
【24h】

The Gaussian stiffness of graphene deduced from a continuum model based on Molecular Dynamics potentials

机译:基于分子动力学势的连续模型推导的石墨烯高斯刚度

获取原文
获取原文并翻译 | 示例
           

摘要

We consider a discrete model of a graphene sheet with atomic interactions governed by a harmonic approximation of the 2nd-generation Brenner potential that depends on bond lengths, bond angles, and two types of dihedral angles. A continuum limit is then deduced that fully describes the bending behavior. In particular, we deduce for the first time an analytical expression of the Gaussian stiffness, a scarcely investigated parameter ruling the rippling of graphene, for which contradictory values have been proposed in the literature. We disclose the atomic-scale sources of both bending and Gaussian stiffnesses and provide for them quantitative evaluations.
机译:我们考虑了具有原子相互作用的石墨烯片的离散模型,该模型由第二代布伦纳势能的谐波近似决定,该函数取决于键长,键角和两种二面角。然后得出一个连续极限,该极限完全描述了弯曲行为。特别是,我们首次推导了高斯刚度的解析表达式,这是一个鲜有研究的关于石墨烯波纹的参数,文献中已经提出了与此矛盾的值。我们公开了弯曲刚度和高斯刚度的原子尺度来源,并为他们提供了定量评估。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号