Sensitivity of PS/CoPd Janus particles to an external magnetic field
Autor(en): | Eichler-Volf, Anna Alsaadawi, Yara Luna, Fernando Vazquez Khan, Qaiser Ali Stierle, Simon Xu, Chi Heigl, Michael Fekri, Zahra Zhou, Shengqiang Zahn, Peter Albrecht, Manfred Steinhart, Martin Erbe, Artur |
Stichwörter: | ALUMINA; Chemistry; Chemistry, Multidisciplinary; NANORODS | Erscheinungsdatum: | 2021 | Herausgeber: | ROYAL SOC CHEMISTRY | Journal: | RSC ADVANCES | Volumen: | 11 | Ausgabe: | 28 | Startseite: | 17051 | Seitenende: | 17057 | Zusammenfassung: | The dual nature of Janus particles confers fascinating properties such as a response to multiple stimuli. In this communication, we systematically study the sensitivity to a uniform external magnetic field of isolated Janus rod-shaped and spherical particles in water confined to two dimensions. The Janus asymmetry of the particles is given by magnetic [Co(0.28 nm)/Pd(0.90 nm)](8) multilayer films deposited onto monodisperse polystyrene (PS) nanorods and microspheres, respectively. It is shown that the particles dispersed in water respond to weak magnetic field applied in in-plane direction. Here we demonstrate that a precise control of the in-plane particle orientation can be obtained for magnetic field strengths higher than 0.1 mT for microspheres and 0.4 mT for nanorods. |
DOI: | 10.1039/d1ra02410h |
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