Minimal numerical ingredients describe chemical microswimmers’ 3-D motion
Source abstract
Abstract
The underlying mechanisms and physics of catalytic Janus microswimmers is highly complex, requiring details of the associated phoretic fields and the physiochemical properties of catalyst, particle, boundaries, and the fuel used. Therefore, developing a minimal (and more general) model capable of capturing the overall dynamics of these autonomous particles is highly desirable. In the presented work, we demonstrate that a coarse-grained dissipative particle-hydrodynamics model is capable of describing the behaviour of various chemical microswimmer systems. Specifically, we show how a competing balance between hydrodynamic interactions experienced by a squirmer in the presence of a substrate, gravity, and mass and shape asymmetries can reproduce a range of dynamics seen in different experimental systems. We hope that our general model will inspire further synthetic work where various modes of swimmer motion can be encoded via shape and mass during fabrication, helping to realise the still outstanding goal of microswimmers capable of complex 3-D behaviour.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Micro and Nano Robotics · Advanced Materials and Mechanics · Microfluidic and Bio-sensing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zürich, Zürich, Switzerland
Departamento de Estructura de la Materia, Física Térmica y Electrónica, Universidad Complutense de Madrid, Madrid, Spain
Departamento de Química Física, Facultad de Química, Universidad Complutense de Madrid, Madrid, Spain
Department of Physics, Institute of Experimental Colloidal Physics, Heinrich-Heine University, Düsseldorf, Germany
Departament de Física de la Matèria Condensada, Universitat de Barcelona, Barcelona, Spain
Universitat de Barcelona Institute of Complex Systems (UBICS), Universitat de Barcelona, Barcelona, Spain
GISC - Grupo Interdiplinar de Sistemas Complejos, Madrid, Spain
Funding
Eidgenössische Technische Hochschule Zürich · Agencia Estatal de Investigación · Generalitat de Catalunya · Ministerio de Economía y Competitividad
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