Elastic and non-linear stiffness of graphene: a simple approach
Jin-Wu Jiang, Jian-Sheng Wang, Baowen Li
TL;DR
This paper presents a simple theoretical approach to explain experimental measurements of graphene's elastic and non-linear stiffness, using a simplified model and force constants derived from the Tersoff-Brenner potential.
Contribution
It introduces a straightforward method to understand graphene's elastic properties by estimating force constants from a well-known potential.
Findings
Explains experimental Young's modulus and third-order elastic stiffness of graphene
Uses a simplified system model for analysis
Estimates force constants from Tersoff-Brenner potential
Abstract
The recent experiment [Science \textbf{321}, 385 (2008)] on the Young's modulus and third-order elastic stiffness of graphene are well explained in a very simple approach, where the graphene is described by a simplified system and the force constant for the non-linear interaction is estimated from the Tersoff-Brenner potential.
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