Self-organized swimming with odd elasticity
Self-organized swimming with odd elasticity
复制标题
具有奇弹性的自组织游泳
DOI：
10.1103/physreve.105.064603
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发表时间：
2022
影响因子：
2.4
通讯作者：
Yasuda Kento
中科院分区：
文献类型：
--
作者：
Ishimoto Kenta;Moreau Clement;Yasuda Kento
我们从理论上研究了活性材料的自激振荡波，这是最近引入的弹性模量的非对称部分，称为奇弹性。利用珀塞尔的三连杆游泳者模型，我们揭示了一个奇怪的弹性细丝在低雷诺数下可以自组织的方式和时间周期动力学的特点是由弹性流体动力学相互作用产生的稳定的极限环游泳。此外，我们考虑一个嘈杂的形状步态，并推导出一个游泳公式的一般弹性材料在斯托克斯政权与其弹性模量由一个非对称矩阵表示，表明奇数弹性产生偏置的净运动从随机噪声。
We theoretically investigate self-oscillating waves of an active material, which were recently introduced as a nonsymmetric part of the elastic moduli, termed odd elasticity. Using Purcell's three-link swimmer model, we reveal that an odd-elastic filament at low Reynolds number can swim in a self-organized manner and that the time-periodic dynamics are characterized by a stable limit cycle generated by elastohydrodynamic interactions. Also, we consider a noisy shape gait and derive a swimming formula for a general elastic material in the Stokes regime with its elasticity modulus being represented by a nonsymmetric matrix, demonstrating that the odd elasticity produces biased net locomotion from random noise.