Humidity induced charge migration on single layer graphene oxide sheets

Ying Wang; Yue Shen; Xueqiang Zhang; Yi Zhang; Jun Hu

doi:10.1063/1.4903836

Humidity induced charge migration on single layer graphene oxide sheets

Ying Wang^*
, Yue Shen
, Xueqiang Zhang
, Yi Zhang
, Jun Hu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The charge migration on the surface of single layer graphene oxide (GO) sheets was investigated by scanning polarization force microscopy. Electrostatic charges were observed to transfer over 1 μm across the insulating single layer GO sheets surface with the help of water molecules condensed from the environment. Humidity-dependent charge migration on GO sheets was visualized on the nanometer scale and the migration velocity was plotted at a relative humidity range of 10%-40%. When the relative humidity reached 50% or higher, water film would form on the whole GO sheet surface, which made the GO sheet conductive to the electrostatic charges.

Original language	English
Article number	233107
Journal	Applied Physics Letters
Volume	105
Issue number	23
DOIs	https://doi.org/10.1063/1.4903836
Publication status	Published - 8 Dec 2014
Externally published	Yes

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title = "Humidity induced charge migration on single layer graphene oxide sheets",

abstract = "The charge migration on the surface of single layer graphene oxide (GO) sheets was investigated by scanning polarization force microscopy. Electrostatic charges were observed to transfer over 1 μm across the insulating single layer GO sheets surface with the help of water molecules condensed from the environment. Humidity-dependent charge migration on GO sheets was visualized on the nanometer scale and the migration velocity was plotted at a relative humidity range of 10\%-40\%. When the relative humidity reached 50\% or higher, water film would form on the whole GO sheet surface, which made the GO sheet conductive to the electrostatic charges.",

author = "Ying Wang and Yue Shen and Xueqiang Zhang and Yi Zhang and Jun Hu",

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AU - Wang, Ying

AU - Shen, Yue

AU - Zhang, Xueqiang

AU - Zhang, Yi

AU - Hu, Jun

PY - 2014/12/8

Y1 - 2014/12/8

N2 - The charge migration on the surface of single layer graphene oxide (GO) sheets was investigated by scanning polarization force microscopy. Electrostatic charges were observed to transfer over 1 μm across the insulating single layer GO sheets surface with the help of water molecules condensed from the environment. Humidity-dependent charge migration on GO sheets was visualized on the nanometer scale and the migration velocity was plotted at a relative humidity range of 10%-40%. When the relative humidity reached 50% or higher, water film would form on the whole GO sheet surface, which made the GO sheet conductive to the electrostatic charges.

AB - The charge migration on the surface of single layer graphene oxide (GO) sheets was investigated by scanning polarization force microscopy. Electrostatic charges were observed to transfer over 1 μm across the insulating single layer GO sheets surface with the help of water molecules condensed from the environment. Humidity-dependent charge migration on GO sheets was visualized on the nanometer scale and the migration velocity was plotted at a relative humidity range of 10%-40%. When the relative humidity reached 50% or higher, water film would form on the whole GO sheet surface, which made the GO sheet conductive to the electrostatic charges.

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DO - 10.1063/1.4903836

M3 - Article

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JO - Applied Physics Letters

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Humidity induced charge migration on single layer graphene oxide sheets

Abstract

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