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

Description

No / 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.

Links & Downloads

1. 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.
2. http://hdl.handle.net/10454/3139
3. https://doi.org/10.1103/PhysRevLett.99.048102

Tags

Brownian motion

Cellular transport

Microorganisms

Additional Fields

Identifer	oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/3139
Date	27 July 2009
Creators	Gough, Tim, Howse, J.R., Jones, R.A.L., Ryan, A.J.
Source Sets	Bradford Scholars
Language	English
Detected Language	English
Type	Article, No full-text available in the repository