Periodic nanowire array at the crystal interface

Atsutomo Nakamura, Teruyasu Mizoguchi, Katsuyuki Matsunaga, Takahisa Yamamoto, Naoya Shibata, Yuichi Ikuhara

    研究成果: Article査読

    13 被引用数 (Scopus)

    抄録

    A dislocation in a crystalline material has dangling bonds at its core and a strong strain field in its vicinity. Consequently, the dislocation attracts solute atoms and forms a so-called Cottrell atmosphere along the dislocation. A crystalline dislocation can be used as a template to produce nanowires by selectively doping foreign atoms along the dislocation. However, control of the configuration, spacing, and density of the formed periodic nanowire array has heretofore been extremely difficult. Here we show a method for fabricating ordered, electrically conductive nanowire arrays using periodic dislocations at crystal interfaces. As a demonstration, we fabricated arrays of titanium nanowires arranged at intervals of either 13 or 90 nm and then confirmed by scanning probe microscopy that they exhibit electrical conductivity inside an insulating aluminum oxide. Significantly, we were able to precisely control nanowire periodicity by the choice of crystal orientation and/or crystal planes at the crystal interface. This simple method for the fabrication of periodic nanowire arrays of highly controlled density should be widely applicable to electrical, magnetic, and optical devices.

    本文言語English
    ページ(範囲)6297-6302
    ページ数6
    ジャーナルACS Nano
    7
    7
    DOI
    出版ステータスPublished - 2013 7月 23

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 工学(全般)
    • 物理学および天文学(全般)

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