Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/184869
Title: | Collective hydrodynamic transport of magnetic microrollers |
Author: | Junot, Gaspard Cebers, Andrejs Tierno, Pietro |
Keywords: | Hidrodinàmica Magnetisme Dinàmica Hydrodynamics Magnetism Dynamics |
Issue Date: | 30-Jun-2021 |
Publisher: | Royal Society of Chemistry |
Abstract: | We investigate the collective transport properties of microscopic magnetic rollers that propel close to a surface due to a circularly polarized, rotating magnetic field. The applied field exerts a torque to the particles, which induces a net rolling motion close to a surface. The collective dynamics of the particles result from the balance between magnetic dipolar interactions and hydrodynamic ones. We show that, when hydrodynamics dominate, i.e. for high particle spinning, the collective mean velocity linearly increases with the particle density. In this regime we analyse the clustering kinetics, and find that hydrodynamic interactions between the anisotropic, elongated particles, induce preferential cluster growth along a direction perpendicular to the driving one, leading to dynamic clusters that easily break and reform during propulsion. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1039/D1SM00653C |
It is part of: | Soft Matter, 2021, vol. 17, p. 8569-8760 |
URI: | http://hdl.handle.net/2445/184869 |
Related resource: | https://doi.org/10.1039/D1SM00653C |
ISSN: | 1744-683X |
Appears in Collections: | Articles publicats en revistes (Institut de Recerca en Sistemes Complexos (UBICS)) Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
719859.pdf | 2.78 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.