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  • Collective stop-and-go dynamics of active bacteria swarms
    Svenšek, Daniel ; Pleiner, Harald ; Brand, Helmut R.
    We set up a macroscopic model of bacterial growth and transport based on a dynamic preferred direction - the collective velocity of the bacteria. This collective velocity is subject to the ... isotropic-nematic transition modeling the density-controlled transformation between immotile and motile bacterial states. The choice of the dynamic preferred direction introduces a distinctive coupling of orientational ordering and transport not encountered otherwise. The approach can also be applied to other systems spontaneously switching between individual (disordered) and collective (ordered) behavior and/or collectively responding to density variations, e.g., bird flocks, fish schools, etc. We observe a characteristic and robust stop-and-go behavior. The inclusion of chirality results in a complex pulsating dynamics.
    Vir: Physical review letters. - ISSN 0031-9007 (Vol. 111, iss. 22, 2013, str. 228101-1-228101-5)
    Vrsta gradiva - članek, sestavni del
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 2620260

    Povezava(-e):

    http://prl.aps.org/abstract/PRL/v111/i22/e228101

vir: Physical review letters. - ISSN 0031-9007 (Vol. 111, iss. 22, 2013, str. 228101-1-228101-5)
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