No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Propulsion by a helical flagellum in a capillary tube
1. T. A. Camesano and B. E. Logan, “Influence of fluid velocity and cell concentration on the transport of motile and nonmotile bacteria in porous media,” Environ. Sci. Technol. 32, 1699 (1998).
2. M. Caldara, R. S. Friedlander, N. L. Kavanaugh, J. Aizenberg, K. R. Foster, and K. Ribbeck, “Mucin biopolymers prevent bacterial aggregation by retaining cells in the free-swimming state,” Curr. Biol. 22, 2325 (2012).
8. A. Dechesne, G. Wang, G. Gülez, D. Or, and B. F. Smets, “Hydration controlled bacterial motility and dispersal on surfaces,” Proc. Natl. Acad. Sci. U.S.A. 107, 14369 (2010).
9. W. R. DiLuzio, L. Turner, M. Mayer, P. Garstecki, D. B. Weibel, H. C. Berg, and G. M. Whitesides, “Escherichia coli swim on the right-hand side,” Nature (London) 435, 1271 (2005).
10. J. Männik, R. Driessen, P. Galajda, J. E. Keymer, and C. Dekker, “Bacterial growth and motility in sub-micron constrictions,” Proc. Natl. Acad. Sci. U.S.A. 106, 14861 (2009).
11. J. Gray and G. J. Hancock, “The propulsion of sea-urchin spermatozoa,” J. Exp. Biol. 32, 802 (1955).
18. N. C. Darnton, L. Turner, S. Rojevsky, and H. C. Berg, “On torque and tumbling in swimming Escherichia coli,” J. Bacteriol. 189, 1756 (2007).
20. R. M. Macnab and M. K. Ornston, “Normal-to-curly flagellar transitions and their role in bacterial tumbling. Stabilization of an alternative quaternary structure by mechanical force,” J. Mol. Biol. 112, 1 (1977).
23. B. Liu, K. S. Breuer, and T. R. Powers, “Helical swimming in Stokes flow using a novel boundary-element method,” Phys. Fluids 25, 061902 (2013).
25. B. Liu, T. R. Powers, and K. S. Breuer, “Force-free swimming of a model helical flagellum in viscoelastic fluids,” Proc. Natl. Acad. Sci. U.S.A. 108, 19516 (2011).
26. C. Pozrikidis, Boundary Integral and Singularity Methods for Linearized Viscous Flow (Cambridge University Press, Cambridge, England, 1992).
31. J. C. Chrispell, L. J. Fauci, and M. Shelley, “An actuated elastic sheet interacting with passive and active structures in a viscoelastic fluid,” Phys. Fluids 25, 013103 (2013).
Article metrics loading...
We study the microscale propulsion of a rotating helical filament confined by a cylindrical tube, using a boundary-element method for Stokes flow that accounts for helical symmetry. We determine the effect of confinement on swimming speed and power consumption. Except for a small range of tube radii at the tightest confinements, the swimming speed at fixed rotation rate increases monotonically as the confinement becomes tighter. At fixed torque, the swimming speed and power consumption depend only on the geometry of the filament centerline, except at the smallest pitch angles for which the filament thickness plays a role. We find that the “normal” geometry of Escherichia coli flagella is optimized for swimming efficiency, independent of the degree of confinement. The efficiency peaks when the arc length of the helix within a pitch matches the circumference of the cylindrical wall. We also show that a swimming helix in a tube induces a net flow of fluid along the tube.
Full text loading...
Most read this month