Growth of tungsten nanodendrites on SiO 2 substrate using electron-beam-induced deposition

Guoqiang Xie, Minghui Song, Kazutaka Mitsuishi, Kazuo Furuya

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Tungsten nanodendrite structures were fabricated on an insulator SiO 2 substrate using an electron-beam-induced deposition process in a high voltage transmission electron microscope. The effect of electron beam accelerating voltage on the nanodendrite structures was investigated. The morphologies and their growth rates did not have obvious difference for the deposition at accelerating voltages from 400 to 1000 kV. A mechanism for the growth and morphology of the nanodendrite structure was proposed involving charge-up produced on the surface of the substrate, movement of charges to and accumulation at the convex surface of the substrate and the tips of the deposits. High-energy electron irradiation enhanced diffusion of W atoms in the nanodendrites, promoted crystallization of W grains, so that more crystallized W nanodendrite structures were achieved by the electron-beam-induced deposition process using higher energy electron beams.

    Original languageEnglish
    Pages (from-to)615-619
    Number of pages5
    JournalJournal of Nanoscience and Nanotechnology
    Volume5
    Issue number4
    DOIs
    Publication statusPublished - 2005 Dec 1

    Keywords

    • Accelerating Voltage
    • Electron-Beam-Induced Deposition
    • Insulator Substrate
    • Nanodendrite
    • Transmission Electron Microscopy
    • Tungsten

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Biomedical Engineering
    • Materials Science(all)
    • Condensed Matter Physics

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