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ACS Nano. 2012 Feb 28;6(2):1387-94. doi: 10.1021/nn204198g. Epub 2012 Jan 6.

Engineered piezoelectricity in graphene.

Author information

1
Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States.

Abstract

We discover that piezoelectric effects can be engineered into nonpiezoelectric graphene through the selective surface adsorption of atoms. Our calculations show that doping a single sheet of graphene with atoms on one side results in the generation of piezoelectricity by breaking inversion symmetry. Despite their 2D nature, piezoelectric magnitudes are found to be comparable to those in 3D piezoelectric materials. Our results elucidate a designer piezoelectric phenomenon, unique to the nanoscale, that has potential to bring dynamical control to nanoscale electromechanical devices.

PMID:
22196055
DOI:
10.1021/nn204198g

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