Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/195176
Title: | Friction induces anisotropic propulsion in sliding magnetic microtriangles |
Author: | Junot, Gaspard Leyva, Sergi G. Pauer, Christoph Calero Borrallo, Carles Pagonabarraga Mora, Ignacio Liedl, Tim Tavacoli, Joe Tierno, Pietro |
Keywords: | Propietats magnètiques Nanopartícules Fricció Magnetic properties Nanoparticles Friction |
Issue Date: | 15-Nov-2022 |
Publisher: | American Chemical Society |
Abstract: | In viscous fluids, motile microentities such as bacteria or artificial swimmers often display different transport modes than macroscopic ones. A current challenge in the field aims at using friction asymmetry to steer the motion of microscopic particles. Here we show that lithographically shaped magnetic microtriangles undergo a series of complex transport modes when driven by a precessing magnetic field, including a surfing-like drift close to the bottom plane. In this regime, we exploit the triangle asymmetric shape to obtain a transversal drift which is later used to transport the microtriangle in any direction along the plane. We explain this friction-induced anisotropic sliding with a minimal numerical model capable to reproduce the experimental results. Due to the flexibility offered by soft-lithographic sculpturing, our method to guide anisotropic-shaped magnetic microcomposites can be potentially extended to many other field responsive structures operating in fluid media. |
Note: | Reproducció del document publicat a: https://doi.org/10.1021/acs.nanolett.2c02295 |
It is part of: | Nano Letters, 2022, vol. 22, p. 7408-7414 |
URI: | http://hdl.handle.net/2445/195176 |
Related resource: | https://doi.org/10.1021/acs.nanolett.2c02295 |
ISSN: | 1530-6984 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
727087.pdf | 4.82 MB | Adobe PDF | View/Open |
This item is licensed under a
Creative Commons License