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. 2015 May 20;5:9586. doi: 10.1038/srep09586

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(a) The model bacterium of length consists of a spherocylindrical body of length and diameter d and four helical flagella each turned by a motor torque. The bacterial geometry and flagellar properties are in agreement with experiments of E. coli (Methods and SI). The body the flagellar bundle counter rotate. h is the gap width between the body and the surface. (b) CW, (c) noisy straight, and (d) CCW trajectories from hydrodynamic simulations of a bacterium swimming near homogeneous surfaces with different slip lengths b as indicated.

Inline graphic — (a) The model bacterium of length consists of a spherocylindrical body of length and diameter d and four helical flagella each turned by a motor torque. The bacterial geometry and flagellar properties are in agreement with experiments of E. coli (Methods and SI). The body the flagellar bundle counter rotate. h is the gap width between the body and the surface. (b) CW, (c) noisy straight, and (d) CCW trajectories from hydrodynamic simulations of a bacterium swimming near homogeneous surfaces with different slip lengths b as indicated.