Limit-cycle oscillation of an elastic filament and caterpillar motion

    研究成果: ジャーナルへの寄稿学術誌査読

    1 被引用数 (Scopus)

    抄録

    Soft biological materials can exhibit various active motion such as limit-cycle oscillation. The limit-cycle oscillation of active matter might be used for a mechanism of locomotion. We propose a simple model of an active elastic chain as an extension of the van der Pol equation. The uniform state is unstable, and exhibits a limit cycle of breathing motion. If the breathing motion is mirror symmetric, the elastic chain does not move as a whole. However, the breathing motion becomes a caterpillar motion and a unidirectional motion is induced, if an additional heterogeneity is involved or the chain is set on a spatially periodic sawtooth potential. We also analyze the model equation with coupled mode equations, and try to understand the bifurcation to the collective oscillation and the directional motion.

    本文言語英語
    論文番号026216
    ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
    79
    2
    DOI
    出版ステータス出版済み - 2月 2 2009

    !!!All Science Journal Classification (ASJC) codes

    • 統計物理学および非線形物理学
    • 統計学および確率
    • 凝縮系物理学

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