Translatory and rotatory motion of exchange-bias capped Janus particles controlled by dynamic magnetic field landscapes.

ABSTRACT: Magnetic Janus particles (MJPs), fabricated by covering a non-magnetic spherical particle with a hemispherical magnetic in-plane exchange-bias layer system cap, display an onion magnetization state for comparably large diameters of a few microns. In this work, the motion characteristics of these MJPs will be investigated when they are steered by a magnetic field landscape over prototypical parallel-stripe domains, dynamically varied by superposed external magnetic field pulse sequences, in an aqueous medium. We demonstrate, that due to the engineered magnetization state in the hemispherical cap, a comparably fast, directed particle transport and particle rotation can be induced. Additionally, by modifying the frequency of the applied pulse sequence and the strengths of the individual field

SUBMITTER: Huhnstock R 

PROVIDER: S-EPMC8575999 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature