Load Response of the Flagellar Beat
Load Response of the Flagellar Beat
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DOI：
10.1103/physrevlett.117.258101
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发表时间：
2016-12-14
影响因子：
8.6
通讯作者：
Friedrich, Benjamin M.
中科院分区：
文献类型：
--
作者：
Klindt, Gary S.;Ruloff, Christian;Friedrich, Benjamin M.
纤毛和鞭毛表现出规则的弯曲波，对周围的流体进行机械功，以推动细胞游泳者并泵送生物体内的流体。在这里，我们量化的力-速度的关系的跳动的鞭毛，通过暴露鞭毛衣原体细胞控制的微流体流动。一个简单的理论鞭毛极限环振荡，校准的测量在没有流量，定量再现这种关系。我们推导出鞭毛节拍的能量效率和它的能力同步振荡流之间的联系。
Cilia and flagella exhibit regular bending waves that perform mechanical work on the surrounding fluid, to propel cellular swimmers and pump fluids inside organisms. Here, we quantify a force-velocity relationship of the beating flagellum, by exposing flagellated Chlamydomonas cells to controlled microfluidic flows. A simple theory of flagellar limit-cycle oscillations, calibrated by measurements in the absence of flow, reproduces this relationship quantitatively. We derive a link between the energy efficiency of the flagellar beat and its ability to synchronize to oscillatory flows.