具有内部和化学自由度的棘轮中的定向输运
Directed transport in a ratchet with internal and chemical freedoms
摘要：
我们认为在棘轮模型中的定向运输机制，除了运输发生的外部自由，化学自由，取代了熟悉的外部驱动由一个自主的动力学提供能量输入，和一个内部的自由代表一个电机分子的功能模式。在我们的模型的数值模拟的电流对各种参数的依赖关系进行了研究。特别是，我们指出的作用的内部自由度作为能量输入和输出的机械工作之间的缓冲，允许注入的能量的临时存储，并可以有助于当前发电的效率。
英文摘要：
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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