Dresden 2017 – scientific programme

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MA: Fachverband Magnetismus

MA 35: Magnetic Particles / Clusters

MA 35.7: Talk

Wednesday, March 22, 2017, 11:00–11:15, HSZ 101

Fabrication and characterization of spherical Janus particles with in plane anisotropy exchange bias caps — •Andreea Tomita, Rico Huhnstock, Dennis Holzinger, and Arno Ehresmann — Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel

The Janus particles are "dual-faced" particles that can serve multiple purposes at the same time, e.g. one face having magnetic properties, while the other can be functionalized with particular receptors, antibodies, or other enzymes for specific applications.

The system we propose makes use of the multifunctionality of Janus particles and complements them with the novelty of an exchange bias (EB) system deposited as a cap on one of the particle's "faces". The fabrication process is tailored so that the unidirectional anisotropy of the cap is oriented parallel to the surface of the particle. The particles are magnetically characterized via vibrating sample magnetometry (VSM), longitudinal magneto-optical Kerr magnetometry (L-MOKE) and magnetic force microscopy (MFM) and the topological features are investigated by scanning electron microscopy (SEM), respectively. These particles will be then introduced in a transport system for remotely controllable linear and rotatory motion.