Control over self-assembled Janus clusters by the strength of magnetic field in $$\hbox {H}_{2}\hbox {O}_{2}$$
| Autor: | Yara Alsaadawi, Artur Erbe, Michael Heigl, Peter Zahn, Anna Eichler-Volf, Manfred Albrecht |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
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 |
| Zdroj: | The European Physical Journal E. 44 |
| ISSN: | 1292-895X 1292-8941 |
| DOI: | 10.1140/epje/s10189-021-00010-3 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink