Extracting work from a single heat bath through feedback
By David Abreu, Udo Seifert. 2011
136 citations recorded by the source corpus.
Work can be extracted from a single heat bath if additional information is available. For the paradigmatic case of a Brownian particle in a harmonic potential, whose position has been measured with finite precision, we determine the optimal protocol for manipulating the center and stiffness of the potential in order to maximize this work in a finite-time process. The bound on this work imposed by a generalized-second-law inequality involving information can be reached only if both position and stiffness of the potential are controlled and the process is quasistatic. Estimates on the power delivered by such an “information machine” operating cyclically follow from our analytical results.
Subfields: Molecular Biology, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/fca26af73d466e8e93e0b94467a488678e895108
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In Molecular Biology
In Statistical and Nonlinear Physics
Citations in the corpus
- Stochastic thermodynamics, fluctuation theorems and molecular machines (2012, unknown): “The optimal protocol for extracting the maximal work from cyclic processes for particles in harmonic traps with adjustable center and stiffness based on imperfect positional measurements has been calculated in [301] where it was shown that the bound (155) cannot be saturated if only the center of th”
- Thermodynamics of Micro- and Nano-Systems Driven by Periodic Temperature Variations (2015, unknown): “[14], this model has recently been realized in a remarkable experiment [2] and can be used to illustrate various aspects of stochastic thermodynamics like the role of feedback [49,50] and shortcuts to adiabaticity [51].”
- Thermodynamics with Continuous Information Flow (2014, result): “By contrast, current investigations of information in nonautonomous systems—ones manipulated by an external agent who drives the system by varying macroscopic external parameters—are significantly less qualitative [7–29].”