Phys. Rev. E 69, 062901 (2004) [4 pages]Simple swimmer at low Reynolds number: Three linked spheres
See accompanying Physics Focus We propose a very simple one-dimensional swimmer consisting of three spheres that are linked by rigid rods whose lengths can change between two values. With a periodic motion in a nonreciprocal fashion, which breaks the time-reversal symmetry as well as the translational symmetry, we show that the model device can swim at low Reynolds number. This model system could be used in constructing molecular-sized machines. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.69.062901
DOI:
10.1103/PhysRevE.69.062901
PACS:
87.19.St, 47.15.Gf, 67.40.Hf
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