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Journal article

Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers

Abstract:

The propulsion velocity of active colloids that asymmetrically catalyze a chemical reaction is probed experimentally as a function of their sizes. It is found that over the experimentally accessible range, the velocity decays as a function of size, with a rate that is compatible with an inverse size dependence. A diffusion-reaction model for the concentrations of the fuel and waste molecules that takes into account a two-step process for the asymmetric catalytic activity on the surface of the...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevE.85.020401

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
Journal:
PHYSICAL REVIEW E
Volume:
85
Issue:
2
Publication date:
2012-02-15
DOI:
EISSN:
1550-2376
ISSN:
1539-3755
Source identifiers:
319761
Language:
English
Pubs id:
pubs:319761
UUID:
uuid:ca80d373-82eb-4c78-bbf6-8ee779740148
Local pid:
pubs:319761
Deposit date:
2012-12-19

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