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Coaxing graphene to be piezoelectric
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10.1063/1.3676084
/content/aip/journal/apl/100/2/10.1063/1.3676084
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3676084
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Geometries considered in the simulations (a) pristine GNR, (b) circular hole GNR, and (c) graphene sheet with triangular hole. The white colored atoms refer to H atoms which mark the termination of GNR.

Image of FIG. 2.
FIG. 2.

Band structure of the GNR with triangular holes. The band gap highlights dielectric behavior. The other geometries taken under study displayed similar band openings.

Image of FIG. 3.
FIG. 3.

(Color online) The development of polarization for triangular-hole-graphene sheet under the action of strain.

Image of FIG. 4.
FIG. 4.

(Color online) Average polarization as a function of applied strain. For comparison, identical curves are shown for well-know naturally piezoelectric materials.

Image of FIG. 5.
FIG. 5.

A finite element model based on elasticity theory provides an indication of the qualitative nature of the strain distribution around the triangular hole.

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/content/aip/journal/apl/100/2/10.1063/1.3676084
2012-01-13
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Coaxing graphene to be piezoelectric
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3676084
10.1063/1.3676084
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