Junot, GaspardLeyva, Sergi G.Pauer, ChristophCalero, CarlesPagonabarraga, IgnacioLiedl, TimTavacoli, JoeTierno, Pietro2022-09-262022-09-262022-09-262022-09-0510.1021/acs.nanolett.2c02295https://infoscience.epfl.ch/handle/20.500.14299/191016WOS:000852203400001In 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.Chemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed MatterChemistryScience & Technology - Other TopicsMaterials SciencePhysicsactive colloidsmicromotorsmagnetismsoft-lithographyshape-anisotropynanowiredensitymotiontext::journal::journal article::research article