The Effects of Fluid Viscosity on the Kinematics and Material Properties of C. elegans Swimming at Low Reynolds Number
The Effects of Fluid Viscosity on the Kinematics and Material Properties of C. elegans Swimming at Low Reynolds Number
复制标题
流体粘度对低雷诺数游泳的线虫运动学和材料性能的影响
DOI：
10.1007/s11340-010-9339-1
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发表时间：
2009
影响因子：
2.4
通讯作者：
P. Arratia
中科院分区：
文献类型：
--
作者：
J. Sznitman;Xiaoning Shen;P. Purohit;P. Arratia
在实验和简单模型中研究了低雷诺数下流体粘度对小型游泳者运动学的影响。游泳者是线虫秀丽隐杆线虫，它是一种长约 1 毫米的波状蛔虫。实验表明，当流体粘度从 1.0 到 12 mPa s 变化时，线虫保持高度周期性的游泳行为。令人惊讶的是，线虫的游动速度（~0.35 毫米/秒）对此处研究的流体粘度范围几乎不敏感。然而，随着流体粘度的增加，线虫的跳动频率降低到渐近值（~1.7 Hz）。使用一个简单的模型来估计线虫的杨氏模量和组织粘度。这两种材料的性能都随着流体粘度的增加而增加。有人提出，杨氏模量的增加可能与响应较大机械载荷的肌肉收缩有关，而有效组织粘度的增加可能与克服增加的流体阻力所需的能量有关。
The effects of fluid viscosity on the kinematics of a small swimmer at low Reynolds numbers are investigated in both experiments and in a simple model. The swimmer is the nematode Caenorhabditis elegans, which is an undulating roundworm approximately 1 mm long. Experiments show that the nematode maintains a highly periodic swimming behavior as the fluid viscosity is varied from 1.0 to 12 mPa s. Surprisingly, the nematode’s swimming speed (~0.35 mm/s) is nearly insensitive to the range of fluid viscosities investigated here. However, the nematode’s beating frequency decreases to an asymptotic value (~1.7 Hz) with increasing fluid viscosity. A simple model is used to estimate the nematode’s Young’s modulus and tissue viscosity. Both material properties increase with increasing fluid viscosity. It is proposed that the increase in Young’s modulus may be associated with muscle contraction in response to larger mechanical loading while the increase in effective tissue viscosity may be associated with the energy necessary to overcome increased fluid drag forces.
兔腰肌单纤维的共价交联增加了振荡功率。
影响因子：
3.4
作者：
Tawada,K;Kawai,M
通讯作者：
Kawai,M
影响因子：
3.4
作者：
Yamada, S;Wirtz, D;Kuo, SC
通讯作者：
Kuo, SC
在低雷诺数下游泳的秀丽隐杆线虫的材料特性。
影响因子：
3.4
作者：
Sznitman,J;Purohit,PrashantK;Krajacic,P;Lamitina,T;Arratia,PE
通讯作者：
Arratia,PE