Peculiar pressure effect on Poisson ratio of graphone as a strain damper

Hydrogenation is an effective way to modify the electronic and magnetic properties of graphene. The semi-hydrogenated graphene, known as "graphone", has promising applications in nanoelectronics including field-effect transistors. However, the elastic limit of this two-dimensional material...

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Bibliographic Details
Published in:Nanoscale 2015-06, Vol.7 (22), p.9975-9979
Main Authors: Peng, Qing, Dearden, Albert K, Chen, Xiao-Jia, Huang, Chen, Wen, Xiaodong, De, Suvranu
Format: Article
Language:English
Subjects:
Asymmetry
Dampers
Elastic limit
Graphene
Hydrogenation
Nanoelectronics
Nanostructure
Poissons ratio
Strain
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Summary:Hydrogenation is an effective way to modify the electronic and magnetic properties of graphene. The semi-hydrogenated graphene, known as "graphone", has promising applications in nanoelectronics including field-effect transistors. However, the elastic limit of this two-dimensional material remains unknown despite its importance in applications as well as strain engineering to tailor functions and properties. Here we report using first-principles calculations an abnormal increase in the Poisson ratio of graphone in response to an increase in pressure. This peculiar behavior is proposed to originate from the asymmetry of hydrogenation and could be used to design a nanodevice of strain damper to reduce harmful strains in graphene-based nanoelectronics.
ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr07665f