Year: 2024
Type: article
Abstract: We present a Brownian dynamics simulation of the bacterial Stirling engine studied by Krishnamurthy et al. [Nat. Phys. 12, 1134 (2016)1745-247310.1038/nphys3870]. In their experimental setup, an overdamped colloid in an optical trap with time-modulated stiffness interacts with a bacterial bath that we represent by an ensemble of overdamped active particles. In the parameter regime of the experiment the thermodynamic performance is governed by an effective temperature and can be parametrized analytically by active Brownian particle models. We quantitatively reproduce the efficiencies reported for the experiments under the assumption that energy exchange with the bath during isochores of the cycle is entirely recuperated and in agreement with the second law.
Source: Physical review. E
Authors: Roland Wiese, Klaus Kroy, Viktor Holubec
Institutions: Leipzig University, Charles University
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1963944856, G3703433313
OpenAlex ID: W4405722524