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Charging and discharging of graphene in ambient conditions studied with scanning probe microscopy
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10.1063/1.3149770
/content/aip/journal/apl/94/23/10.1063/1.3149770
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/23/10.1063/1.3149770
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Scheme of the experimental charging and measurement procedure used. (b) SPFM (top left) and KPM (top right) images of a FLG film before charging at low RH. Bottom: KPM images of the same film after charging to (left) −8 V and (right) . (c) CPD after charge injection-CPD discharged) vs voltage applied to the tip during the charging process measured from KPM taken after charge injection. appears to be proportional to . Different symbols denote different experiments with different tips and different samples. All experiments were performed at .

Image of FIG. 2.
FIG. 2.

(a) Time evolution of KPM images of a FLG film charged at and at 30% RH. (b) Cross section profiles of the same images.

Image of FIG. 3.
FIG. 3.

(a) Equivalent circuit modeling the discharge of the FLG film. Some of the components of the circuit can be neglected at low humidity and at high humidity . (b) Evolution with time of the FLG film CPD value after charging it at for 10%, 30%, and 50% RH. Exponential decays used to fit the data [Eqs. (1) and (3)] are shown and the CPD value of the discharged FLG film is marked .

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/content/aip/journal/apl/94/23/10.1063/1.3149770
2009-06-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Charging and discharging of graphene in ambient conditions studied with scanning probe microscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/23/10.1063/1.3149770
10.1063/1.3149770
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