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    Self-motile colloidal particles: from directed propulsion to random walk

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    Publication date
    2009-07-27T14:02:46Z
    Author
    Gough, Timothy D.
    Howse, J.R.
    Jones, R.A.L.
    Ryan, A.J.
    Keyword
    Brownian motion
    Cellular transport
    Microorganisms
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    The motion of an artificial micro-scale swimmer that uses a chemical reaction catalyzed on its own surface to achieve autonomous propulsion is fully characterized experimentally. It is shown that at short times, it has a substantial component of directed motion, with a velocity that depends on the concentration of fuel molecules. At longer times, the motion reverts to a random walk with a substantially enhanced diffusion coefficient. Our results suggest strategies for designing artificial chemotactic systems.
    URI
    http://hdl.handle.net/10454/3139
    Version
    No full-text available in the repository
    Citation
    Gough, T.D., Howse, J.R., Jones, R.A.L. and Ryan, A.J. (2007). Self-motile colloidal particles: from directed propulsion to random walk. Physical Review Letters. Vol. 99, No. 4.
    Link to publisher’s version
    http://dx.doi.org/10.1103/PhysRevLett.99.048102
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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