论文标题
旋转细菌鞭毛的弹性水力动力同步
Elastohydrodynamic synchronization of rotating bacterial flagella
论文作者
论文摘要
为了连续旋转而不会堵塞，需要将细菌的鞭毛细丝锁定。尽管已经提出了几种用于真核鞭毛的模型，但细菌鞭毛的同步知之甚少。从还原的柔性和流体动力耦合细菌鞭毛模型开始，我们使用多个尺度的方法严格地粗粒运动方程，因此表明细菌鞭毛通常通过弹性氢化动力学机制通过弹性的相位差为零相差。值得注意的是，在弹性依从性的中间值中，远场同步速率最大化，对细菌的意义令人惊讶。
To rotate continuously without jamming, the flagellar filaments of bacteria need to be locked in phase. While several models have been proposed for eukaryotic flagella, the synchronization of bacterial flagella is less well understood. Starting from a reduced model of flexible and hydrodynamically-coupled bacterial flagella, we rigorously coarse-grain the equations of motion using the method of multiple scales, and hence show that bacterial flagella generically synchronize to zero phase difference via an elastohydrodynamic mechanism. Remarkably, the far-field rate of synchronization is maximized at an intermediate value of elastic compliance, with surprising implications for bacteria.
