Engineered Piezoelectricity in Graphene
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- 作者：Mitchell T. Ong ; Evan J. Reed
- 刊名：ACS Nano
- 出版年：2012
- 出版时间：February 28, 2012
- 年：2012
- 卷：6
- 期：2
- 页码：1387-1394
- 全文大小：534K
- 年卷期：v.6,no.2(February 28, 2012)
- ISSN：1936-086X
文摘
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.