Paramagnetic beads surfing on domain walls

被引：25

作者：

Helseth, LE ^{[1
]}

Fischer, TM

Johansen, TH

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

[2] Univ Oslo, Dept Phys, Blindern, Norway

来源：

PHYSICAL REVIEW E | 2003年 / 67卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.67.042401

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Paramagnetic beads electrostatically stabilized in aqueous solution are attracted toward domain walls in magnetic films. The position above the domain wall can be destabilized by realigning the beads magnetic moment with an external magnetic field. The destabilization may result in a steady state dissipative mode, where the beads surf on the slope of the moving domain wall. The technique could be an alternative route to probe electrostatic and hydrodynamic interactions between particles and interfaces, and could also serve as a model system for studying motion in a one-dimensional potential.

引用

页数：4

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