Grosjean Galien, Hubert Maxime, Lagubeau Guillaume, Vandewalle Nicolas
GRASP Lab, CESAM Research Unit, University of Liège, B-4000 Liège, Belgium.
Departamento de Fìsica, Universidad de Santiago de Chile, Chile.
Phys Rev E. 2016 Aug;94(2-1):021101. doi: 10.1103/PhysRevE.94.021101. Epub 2016 Aug 1.
A paradigmatic microswimmer is the three-linked-spheres model, which follows a minimalist approach for propulsion by shape shifting. As such, it has been the subject of numerous analytical and numerical studies. In this Rapid Communication, an experimental three-linked-spheres swimmer is created by self-assembling ferromagnetic particles at an air-water interface. It is powered by a uniform oscillating magnetic field. A model, using two harmonic oscillators, reproduces the experimental findings. Because the model remains general, the same approach could be used to design a variety of efficient microswimmers.
一个典型的微型游泳器是三球体模型，它采用了通过形状变化进行推进的极简方法。因此，它一直是众多分析和数值研究的主题。在这篇快速通讯中，通过在空气 - 水界面自组装铁磁颗粒创建了一个实验性的三球体游泳器。它由均匀的振荡磁场提供动力。一个使用两个谐波振荡器的模型再现了实验结果。由于该模型具有通用性，相同的方法可用于设计各种高效的微型游泳器。
