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Control over self-assembled Janus clusters by the strength of magnetic field in $$\hbox {H}_{2}\hbox {O}_{2}$$
- Source :
- The European Physical Journal E. 44
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Colloidal Janus microparticles can be propelled by controlled chemical reactions on their surfaces. Such microswimmers have been used as model systems for the behavior on the microscale and as carriers for cargo to well-defined positions in hard-to-access areas. Here we demonstrate the propagation motion of clusters of magnetic Janus particles driven by the catalytic decomposition of $$\hbox {H}_2\hbox {O}_2$$ on their metallic caps. The magnetic moments of their caps lead to certain spatial arrangements of Janus particles, which can be influenced by external magnetic fields. We investigate how the arrangement of the particles and caps determines the driven motion of the particle clusters. In addition, we show the influence of confining walls on the cluster motion, which will be encountered in any real-life biological system.
- Subjects :
- Materials science
Magnetic moment
Biophysics
Janus particles
02 engineering and technology
Surfaces and Interfaces
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Magnetic field
Chemical physics
Cluster (physics)
Particle
General Materials Science
Janus
Soft matter
0210 nano-technology
Microscale chemistry
Biotechnology
Subjects
Details
- ISSN :
- 1292895X and 12928941
- Volume :
- 44
- Database :
- OpenAIRE
- Journal :
- The European Physical Journal E
- Accession number :
- edsair.doi...........806c80c1840a383a68f0f2e62b0a5f7f