Reference : Extracting maximum power from active colloidal heat engines
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/47917
Extracting maximum power from active colloidal heat engines
English
Martin, D. [DAMTP, Centre for Mathematical Sciences, University of Cambridge - Wilberforce Road, Cambridge CB3 0WA, UK > > > ; Université Paris Diderot, Sorbonne Paris Cité, MSC, UMR 7057 CNRS - 75205 Paris, France]
Nardini, C. [DAMTP, Centre for Mathematical Sciences, University of Cambridge - Wilberforce Road, Cambridge CB3 0WA, UK > > > ; Service de Physique de l'Etat Condensé, CNRS UMR 3680, CEA-Saclay - 91191 Gif-sur-Yvette, France]
Cates, M. E. [DAMTP, Centre for Mathematical Sciences, University of Cambridge - Wilberforce Road, Cambridge CB3 0WA, UK]
Fodor, Etienne mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)]
2018
EPL
IOP PUBLISHING LTD
121
6
Yes (verified by ORBilu)
International
0295-5075
TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
[en] Colloidal heat engines extract power out of a fluctuating bath by manipulating a confined tracer. Considering a self-propelled tracer surrounded by a bath of passive colloids, we optimize the engine performances based on the maximum available power. Our approach relies on an adiabatic mean-field treatment of the bath particles which reduces the many-body description into an effective tracer dynamics. It leads us to reveal that, when operated at constant activity, an engine can only produce less maximum power than its passive counterpart. In contrast the output power of an isothermal engine, operating with cyclic variations of the self-propulsion without any passive equivalent exhibits an optimum in terms of confinement and activity. Direct numerical simulations of the microscopic dynamics support the validity of these results even beyond the mean-field regime, with potential relevance to the design of experimental engines. Copyright (C) EPLA 2018
http://hdl.handle.net/10993/47917
10.1209/0295-5075/121/60005
Article

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