Periodically Modulated Size-Dependent Elastic Properties of Armchair Graphene Nanoribbons.
basic_science · Level V
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- Record sourced from PubMed, PMID 26134244.
- Also identified by DOI 10.1021/acs.nanolett.5b00399.
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Abstract
First-principles calculations were conducted on armchair graphene nanoribbons (AGNRs) to simulate the elastic behavior of AGNRs with hydrogen-terminated and bare edges. The results show width-dependent elastic properties with a periodicity of three, which depends on the nature of edge. The edge eigenstress and eigendisplacement models are able to predict the width-dependent nominal Young's modulus and Poisson's ratio, while the Clar structure explains the crucial role of edges in the periodically modulated size-dependent elastic properties.