Electrical Detection of Metal Ions Using Field-Effect Transistors Based on Micropatterned Reduced Graphene Oxide Films

We present a field-effect transistor sensor using micropatterned, protein-functionalized Reduced graphene oxide film as the conducting or sensing channel

Herry Gunadi Sudibya; Qiyuan He; Hua Zhang; Peng Chen

2011

Scholarcy highlights

  • The electrical property of graphene is highly sensitive to its local environment, which makes graphene an ideal channel material in electronic sensors
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  • We present a field-effect transistor sensor using micropatterned, protein-functionalized Reduced graphene oxide film as the conducting or sensing channel
  • Control experiments for ion detection with CaM functionalized rGO-FET, rGO-FETs, and MT-functionalized rGO-FET; Ids−Vg characteristics of MT-II-modified rGO-FET before and after addition of Hg2+; long-time current stability in Hg2+ sensing with our rGO sensor
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