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Advanced Materials

Towards All-Soft Matter Circuits: Prototypes of Quasi-Liquid Devices with Memristor Characteristics

Authors

  • Hyung-Jun Koo,

    1. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
    Current affiliation:
    1. H.-J.K. and J.-H.S. contributed equally to this work.
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  • Ju-Hee So,

    1. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
    Current affiliation:
    1. H.-J.K. and J.-H.S. contributed equally to this work.
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  • Michael D. Dickey,

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
    • Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA.
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  • Orlin D. Velev

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
    • Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA.
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Abstract

A new class of memristors based entirely on soft and liquid-based matter is presented. The devices are formed by interfacing liquid metal electrodes with water-based gel doped with polyelectrolytes. They memorize the last state of bias polarization on the basis of the asymmetric conductance of the hydrogel-oxide-liquid metal stack. Such devices may find application in circuit-live tissue interfaces, soft robotics, and neuromorphic systems.

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