Dynamics of a bacterium moving by chemotaxis in its own secretion

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• Dr Ankush Sengupta (Institute for theoretical physics, University of Duesseldorf)
• Friday 10 July 2009, 12:00-13:00
• Unilever Lecture Theatre, Department of Chemistry.

If you have a question about this talk, please contact Dr Mark Miller.

Extra seminar

The brownian dynamics of a single bacterium coupled by chemotaxis to a diffusing concentration field which is secreted by the particle itself is studied by computer simulations in spatial dimensions d = 1, 2, 3. Both cases of a chemoattractant and a chemorepellent are discussed. For a chemoattractant, we find a transient dynamical arrest until the particle diffuses for long times. For a chemorepellant, there is a transient ballistic motion in all dimensions and a long-time diffusion. These results are interpreted with the help of appropriate arguments and theoretical analysis.

This talk is part of the Extra Theoretical Chemistry Seminars series.

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