论文标题
一种新的趋化方法：由内部时钟引导的活性粒子
A novel approach to chemotaxis: active particles guided by internal clocks
论文作者
论文摘要
通过观察细菌游泳者的非指数运行时分布的动机，我们提出了一个最小的现象学模型，该模型模型是由运动颗粒的出租车的出租车模型，其运动由内部时钟控制。时钟的滴答取决于外部浓度场，例如一种化学物质。我们证明，这些粒子可以检测浓度梯度并根据时钟设计向上或下梯度来响应它们，尽管这些磁场的测量值纯粹是局部局部的，并且会瞬间瞬间。总的来说，我们的结果通过表明使用时钟来控制运动动作的方法为方向导航的研究打开了一条新途径，这代表了一种通用且多功能的工具箱，以设计对外部线索的行为响应，例如光，化学或温度梯度。
Motivated by the observation of non-exponential run-time distributions of bacterial swimmers, we propose a minimal phenomenological model for taxis of active particles whose motion is controlled by an internal clock. The ticking of the clock depends on an external concentration field, e.g. a chemical substance. We demonstrate that these particles can detect concentration gradients and respond to them by moving up- or down-gradient depending on the clock design, albeit measurements of these fields are purely local in space and instantaneous in time. Altogether, our results open a new route in the study of directional navigation, by showing that the use of a clock to control motility actions represents a generic and versatile toolbox to engineer behavioral responses to external cues, such as light, chemical, or temperature gradients.
