Corpus ID: 235446769

Helical trajectories of swimming cells with a flexible flagellar hook

  title={Helical trajectories of swimming cells with a flexible flagellar hook},
  author={Zonghao Zou and W. Lough and S. Spagnolie},
The flexibility of the bacterial flagellar hook is believed to have substantial consequences for microorganism locomotion. Using a simplified model of a rigid flagellum and a flexible hook, we show that the paths of axisymmetric cell bodies driven by a single flagellum are generically helical. Phase-averaged resistance and mobility tensors are produced to describe the flagellar hydrodynamics, and a helical rod model which retains a coupling between translation and rotation is identified as a… Expand

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Motor-driven bacterial flagella and buckling instabilities
  • R. Vogel, H. Stark
  • Physics, Medicine
  • The European physical journal. E, Soft matter
  • 2012
A elaborate analytical model based on a helical rod which quantitatively reproduces the critical force-torque relation is presented which suggests that buckling should occur in single bacterial flagella. Expand