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arXiv · 1002.4012

Directed transport in a ratchet with internal and chemical freedoms

Thomas Dittrich·Nestor A. Naranjo
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Abstract

We consider mechanisms of directed transport in a ratchet model comprising, besides the external freedom where transport occurs, a chemical freedom that replaces the familiar external driving by an autonomous dynamics providing energy input, and an internal freedom representing a functional mode of a motor molecule. The dependence of the current on various parameters is studied in numerical simulations of our model. In particular, we point out the role of the internal freedom as a buffer between energy input and output of mechanical work that allows a temporary storage of injected energy and can contribute to the efficiency of current generation.

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Thomas Dittrich, Nestor A. Naranjo. 2010-02-21. Directed transport in a ratchet with internal and chemical freedoms. https://doi.org/10.1016/j.chemphys.2010.07.008

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