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Experimental realization of a minimal microscopic heat engine

Journal article
Authors Aykut Argun
Jalpa Soni
Lennart Dabelow
Stefano Bo
Giuseppe Pesce
Ralf Eichhorn
Giovanni Volpe
Published in Physical Review E. Statistical, Nonlinear, and Soft Matter Physics
Volume 96
ISSN 1539-3755
Publication year 2017
Published at Department of Physics (GU)
Language en
Links https://doi.org/10.1103/PhysRevE.96...
https://gup.ub.gu.se/file/207378
Subject categories Physical Sciences

Abstract

Microscopic heat engines are microscale systems that convert energy flows between heat reservoirs into work or systematic motion. We have experimentally realized a minimal microscopic heat engine. It consists of a colloidal Brownian particle optically trapped in an elliptical potential well and simultaneously coupled to two heat baths at different temperatures acting along perpendicular directions. For a generic arrangement of the principal directions of the baths and the potential, the symmetry of the system is broken, such that the heat flow drives a systematic gyrating motion of the particle around the potential minimum. Using the experimentally measured trajectories, we quantify the gyrating motion of the particle, the resulting torque that it exerts on the potential, and the associated heat flow between the heat baths. We find excellent agreement between the experimental results and the theoretical predictions.

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Denna text är utskriven från följande webbsida:
http://www.gu.se/english/research/publication/?publicationId=259154
Utskriftsdatum: 2020-02-26