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  • Title: Simple swimmer at low Reynolds number: three linked spheres.
    Author: Najafi A, Golestanian R.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2004 Jun; 69(6 Pt 1):062901. PubMed ID: 15244646.
    Abstract:
    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.
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