TITLE

Strain effects on basal-plane hydrogenation of graphene: A first-principles study

AUTHOR(S)
Kun Xue; Zhiping Xu
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p063103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter we discuss basal-plane hydrogenation of graphene, in the extent of intercoupling between strain and electronic structure. Our first-principles calculations reveal that the atomic structures, binding energies, mechanical and electronic properties of graphene are significantly modified by applying strain. At a biaxial strain of 10%, binding energies of hydrogen on graphene can be improved by 53.89% and 23.56% in the symmetric and antisymmetric phase. In symmetric phase, carbon-hydrogen binding is unstable in compression. In antisymmetric phase, binding of hydrogen atoms reduces the sp2 characteristic of graphene, which is partially recovered at finite tensile strain.
ACCESSION #
48067920

 

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