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Observation of Enhanced Diffusivity in Magnetically Powered Reciprocal Swimmers

Mandal, Pranay and Ghosh, Ambarish (2013) Observation of Enhanced Diffusivity in Magnetically Powered Reciprocal Swimmers. In: PHYSICAL REVIEW LETTERS, 111 (24).

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.111.248101

Abstract

We report on the development of a system of micron-sized reciprocal swimmers that can be powered with small homogeneous magnetic fields, and whose motion resembles that of a helical flagellum moving back and forth. We have measured the diffusivities of the swimmers to be higher compared to nonactuated objects of identical dimensions at long time scales, in accordance with the theoretical predictions made by Lauga Phys. Rev. Lett. 106, 178101 (2011)]. Randomness in the reciprocity of the actuation strokes was found to have a strong influence on the enhancement of the diffusivity, which has been investigated with numerical calculations.

Item Type: Journal Article
Additional Information: copyright for this article belongs to AMER PHYSICAL SOC,USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 22 Jan 2014 04:35
Last Modified: 22 Jan 2014 04:35
URI: http://eprints.iisc.ac.in/id/eprint/48212

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