Journal article
Self-motile colloidal particles: from directed propulsion to random walk.
- Abstract:
- The motion of an artificial microscale 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.
- Publication status:
- Published
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Authors
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 99
- Issue:
- 4
- Pages:
- 048102
- Publication date:
- 2007-07-01
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:155799
- UUID:
-
uuid:fc5a9f84-93a2-4962-82cb-11dc0f4c1941
- Local pid:
-
pubs:155799
- Source identifiers:
-
155799
- Deposit date:
-
2012-12-19
Terms of use
- Copyright date:
- 2007
- Notes:
-
This is an experimental paper, due to appear in Phys. Rev. Lett.
(2007)
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