论文标题
由催化化学反应驱动的微大麻的非肾脏性
Nonreciprocality of a micromachine driven by a catalytic chemical reaction
论文作者
论文摘要
我们提出了一个模型，该模型描述了由催化化学反应驱动的微马机的循环状态转变。我们考虑了代表化学反应程度和MicroMachine内部状态的变量的机械化学耦合。总自由能由倾斜的周期电势和机械化学耦合能组成。我们假设反应变量遵守以两个典型的时间尺度为特征的确定性逐步动力学，即平均第一个传递时间和平均第一个过渡路径时间。为了估计微型机械的功能，我们专注于称为“非交易性”的数量，并进一步讨论了其对催化反应特性的依赖性。例如，我们表明非转换性与平均第一个过渡路径时间的平方成正比。在解耦近似模型中的两个时间尺度的显式计算表明，非交流性质与催化反应的能量屏障平方成反比。
We propose a model that describes cyclic state transitions of a micromachine driven by a catalytic chemical reaction. We consider a mechano-chemical coupling of variables representing the degree of a chemical reaction and the internal state of a micromachine. The total free energy consists of a tilted periodic potential and a mechano-chemical coupling energy. We assume that the reaction variable obeys a deterministic stepwise dynamics characterized by two typical time scales, i.e., the mean first passage time and the mean first transition path time. To estimate the functionality of a micromachine, we focus on the quantity called "nonreciprocality" and further discuss its dependence on the properties of catalytic reaction. For example, we show that the nonreciprocality is proportional to the square of the mean first transition path time. The explicit calculation of the two time scales within the decoupling approximation model reveals that the nonreciprocality is inversely proportional to the square of the energy barrier of catalytic reaction.
