Efficiency of Energy Transduction in a Molecular Chemical Engine
Kazuo Sasaki, Ryo Kanada, and Satoshi Amari
TL;DR
This paper presents a simple two-state ratchet model for molecular chemical engines, analyzing their energy transduction efficiency and how reaction and rotation rates depend on molecule concentrations.
Contribution
It introduces an analytical model for molecular engines that links chemical reactions to mechanical rotation and evaluates their energy efficiency.
Findings
Derived analytical expressions for rotation and reaction rates.
Analyzed the dependence of engine performance on molecule concentrations.
Discussed the efficiency of energy transduction in the model.
Abstract
A simple model of the two-state ratchet type is proposed for molecular chemical engines that convert chemical free energy into mechanical work and vice versa. The engine works by catalyzing a chemical reaction and turning a rotor. Analytical expressions are obtained for the dependences of rotation and reaction rates on the concentrations of reactant and product molecules, from which the performance of the engine is analyzed. In particular, the efficiency of energy transduction is discussed in some detail.
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