论文标题
通过大体运动来测量纳米温剂动力学
Gauging nanoswimmer dynamics via the motion of large bodies
论文作者
论文摘要
纳米温植物在生物学和纳米技术中无处不在，但由于其分小量和驱动力，测量的挑战极具挑战性。提出了一种简单的方法，用于通过观察它们如何影响更大，易于追踪的颗粒的运动来检测纳米晶木剂的难以捉摸的物理特征。将游泳者建模为流体动力偶极子，我们发现可观察到的功率谱和示踪剂的扩散性与游泳者的动态特征之间的直接，易于校准的关系：它们的力偶极力矩和相关时间。
Nanoswimmers are ubiquitous in bio- and nano-technology but are extremely challenging to measure due to their minute size and driving forces. A simple method is proposed for detecting the elusive physical features of nanoswimmers by observing how they affect the motion of much larger, easily traceable particles. Modeling the swimmers as hydrodynamic force dipoles, we find direct, easy-to-calibrate relations between the observable power spectrum and diffusivity of the tracers and the dynamic characteristics of the swimmers: their force dipole moment and correlation times.
