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Updated: Jul 10, 2025
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A chemical reaction network implementation of a Maxwell demon
Massimo Bilancioni1, Massimiliano Esposito1, Nahuel Freitas1,2
1Department of Physics and Materials Science, University of Luxembourg, Avenue de la Faïencerie, Luxembourg City 1511, G.D. Luxembourg.
The Journal of Chemical Physics
|November 27, 2023
Summary
This study presents a chemical Maxwell demon that rectifies reaction fluctuations. Unlike its electronic counterpart, this chemical demon cannot produce finite output in the macroscopic limit due to reaction network constraints.
Area of Science:
- Thermodynamics
- Chemical Kinetics
- Information Theory
Background:
- Maxwell's demon is a thought experiment exploring the second law of thermodynamics.
- Recent studies have explored electronic analogs of Maxwell's demon.
- Chemical reactions exhibit thermal fluctuations that can be potentially rectified.
Purpose of the Study:
- To study an autonomous Maxwell demon model based on rectifying chemical reaction fluctuations.
- To characterize the scaling behavior, performance, and impact of delays in the chemical demon.
- To analyze the information thermodynamics of the chemical demon.
Main Methods:
- Development of an autonomous model of a chemical Maxwell demon.
- Analytical derivation of key performance metrics including reverse chemical current, output power, and transduction efficiency.
- Bipartite analysis of information thermodynamics in the fast demon limit.
Main Results:
- Analytical expressions for chemical current, power, efficiency, and molecular correlations were obtained.
- A bound on the nonequilibrium response prevents finite output in the macroscopic limit, differing from electronic analogs.
- Information flow patterns and partial efficiencies of measurement and feedback were examined.
Conclusions:
- The chemical Maxwell demon, while rectifying fluctuations, is fundamentally limited in generating macroscopic output.
- Information thermodynamics provides a framework to understand the demon's operation and limitations.
- The study highlights key differences between chemical and electronic Maxwell demon analogs.
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