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Running and tumbling with E. coli in polymeric solutions

Autor: Patteson, A. E., Gopinath, A., Goulian, M., Arratia, P. E.

Publikováno v: Patteson, A. E. et al. Running and tumbling with E. coli in dilute polymeric solutions. Sci. Rep. 5, 15761; doi: 10.1038/srep15761 (2015)

Run-and-tumble motility is widely used by swimming microorganisms including numerous prokaryotic eukaryotic organisms. Here, we experimentally investigate the run-and-tumble dynamics of the bacterium E. coli in polymeric solutions. We find that even

Externí odkaz: http://arxiv.org/abs/1511.00708

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Fluctuations and Rheology in Active Bacterial Suspensions

Autor: Chen, D. T. N., Lau, A. W. C., Hough, L. A., Islam, M. F., Goulian, M., Lubensky, T. C., Yodh, A. G.

We probe non-equilibrium properties of an active bacterial bath through measurements of correlations of passive tracer particles and the response function of a driven, optically trapped tracer. These measurements demonstrate violation of the fluctuat

Externí odkaz: http://arxiv.org/abs/0709.1465

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Shape Fluctuations of a Droplet Containing a Polymer

Autor: Goulian, M., Milner, S. T.

We consider the problem of an ideal polymer confined in a droplet. When the droplet radius is smaller than the (unconfined) polymer radius of gyration, the polymer entropy will depend on the droplet shape. We compute the resulting surface free energy

Externí odkaz: http://arxiv.org/abs/cond-mat/9509131

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Fluctuation-Induced Interactions between Rods on Membranes and Interfaces

Autor: Golestanian, R., Goulian, M., Kardar, M.

We consider the interaction between two rods embedded in a fluctuating surface which is governed by either surface tension or rigidity. The modification of fluctuations by the rods leads to an attractive long-range interaction that falls off as $1/R^

Externí odkaz: http://arxiv.org/abs/cond-mat/9509071

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