Modulation of the ionic flow through internally gated nanopores based on 2D materials

ORAL

Abstract

Ionic flow through nanopores can be modulated by applying internal electrostatic fields. However, this requires the incorporation of internal electrodes capable of delivering the electric field. In this work, we demonstrate how nanopores with internal electrodes can be fabricated in a stack of alternating layers of insulating and conducting van der Waals materials. We show that the ionic flow through these nanopores can be modulated by applying electrostatic fields, especially at low ion concentrations where the Debye lengths are comparable to the size of the nanopore. This approach to fabricating internally gated nanopores offers atomic precision of the electrode thickness and spacing, which enhances the tunability of the devices for different applications.

*We acknowledge the support received from the Center for Enhanced Nanofluidic Transport (CENT), an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award DE-SC0019112

–

Presenters

  • Aaron H Barajas Aguilar

    • University of California, Irvine

Authors

  • Aaron H Barajas Aguilar

    • University of California, Irvine

  • Matthew Schiel

    • University of California, Irvine

  • Ethan Cao

    • University of California, Irvine

  • Takashi Taniguchi

    • National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Zuzanna S Siwy

    • University of California, Irvine

  • Javier D Sanchez-Yamagishi

    • University of California, Irvine