Marchegiani Giampiero, Marchesoni Fabio
Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy.
J Chem Phys. 2015 Nov 14;143(18):184901. doi: 10.1063/1.4935167.
We investigate, both numerically and analytically, the diffusion properties of a stochastic sled sliding on a substrate, subject to a constant towing force. The problem is motivated by the growing interest in controlling transport of artificial microswimmers in 2D geometries at low Reynolds numbers. We simulated both symmetric and asymmetric towed sleds. Remarkable properties of their mobilities and diffusion constants include sidewise drifts and excess diffusion peaks. We interpret our numerical findings by making use of stochastic approximation techniques.
我们通过数值和解析方法研究了在恒定拖曳力作用下，在基底上滑动的随机雪橇的扩散特性。这个问题是由人们对在低雷诺数下二维几何结构中控制人造微游动器的运输越来越感兴趣而引发的。我们模拟了对称和不对称拖曳的雪橇。它们迁移率和扩散常数的显著特性包括侧向漂移和过量扩散峰。我们利用随机近似技术来解释我们的数值研究结果。
