Stochastic currents and efficiency in an autonomous heat engine

Wenqi Lin, Yi Hung Liao, Pik Yin Lai, Yonggun Jun

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

We experimentally demonstrate that a Brownian gyrator of a colloidal particle confined in a two-dimensional harmonic potential with different effective temperatures on orthogonal axes can work as an autonomous heat engine capable of extracting work from the heat bath, generated by an optical feedback trap. The results confirm the theoretically predicted thermodynamic currents and validate the attainability of Carnot efficiency as well as the trade-off relation between power and efficiency. We further show that current fluctuations and the entropy production rate are time independent in the steady state and their product near the Carnot efficiency is close to the lower bound of the thermodynamic uncertainty relation.

原文???core.languages.en_GB???
文章編號L022106
期刊Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
106
發行號2
DOIs
出版狀態已出版 - 8月 2022

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