Self-healing metal wire using electric field trapping of metal nanoparticles

Tomoya Koshi, Eiji Iwase

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We propose a self-healing metal wire using electric field trapping of gold nanoparticles by a dielectrophoresis force. A cracked gold wire can retrieve its conductivity through the self-healing function. In this paper, we examine the healing voltage causing the electric field trapping and determine the healing time, which is relevant to future device applications. First, the forces acting on a nanoparticle are analyzed and a theoretical healing voltage curve is calculated. Then, gold wires with 200- to 1,600-nm-wide cracks are fabricated on glass substrate and the self-healing function is verified through healing experiments. As a result, gold wires with cracks of up to 1,200nm in width are successfully healed by applying less than ~2.5V (on average), and the experimental results correspond almost exactly with the calculated healing voltage curve. The average healing times are 10 to 285 s for 200- to 1,200-nm-wide cracks. Through scanning electron microscope analysis after the healing experiments, we confirm that the cracks are healed by assembled nanoparticles.

    Original languageEnglish
    Article number06FP03
    JournalJapanese Journal of Applied Physics
    Volume54
    Issue number6
    DOIs
    Publication statusPublished - 2015 Jun 1

    Fingerprint

    Metal nanoparticles
    healing
    Gold
    trapping
    Electric fields
    wire
    Wire
    Cracks
    nanoparticles
    electric fields
    Nanoparticles
    Metals
    metals
    Electric potential
    cracks
    gold
    Electrophoresis
    Electron microscopes
    Experiments
    Scanning

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    Cite this

    Self-healing metal wire using electric field trapping of metal nanoparticles. / Koshi, Tomoya; Iwase, Eiji.

    In: Japanese Journal of Applied Physics, Vol. 54, No. 6, 06FP03, 01.06.2015.

    Research output: Contribution to journalArticle

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