Graphene Trans-Electrode Membranes

ORAL

Abstract

We report an electrical study of suspended single-layer graphene membranes separating reservoirs of electrolyte solution. Because the opposing reservoirs are separated only by an atomically thin membrane, the trans-conductance (ionic current response to a voltage across the membrane) is extremely sensitive to nanoscale defects in the membrane. This sensitivity allows the precise examination and characterization of intrinsic defects in graphene membranes, as well as engineered defects for devices. We will discuss methods for creating single nanopores or distributed defects in our graphene membranes, with the applications of nanopore DNA sequencing and water desalination in mind.

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Authors

  • Aaron Kuan

    Harvard University

  • Lu Bo

    Harvard University

  • Ryan Rollings

    University of Arkansas at Fayetteville, Harvard University

  • Don Dressen

    Harvard University

  • Daniel Branton

    Harvard University

  • Jene Golovchenko

    Harvard University, Harvard