Stable diamagnetic self-levitation of a micro-magnet by improvement of its magnetic gradients

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:321

Article

Profijt, H. B.^1,2  Pigot, C.¹  Reyne, G.¹  Grechishkin, R. M.³  Cugat, O.¹ 

[1] Grenoble Univ, ENSE3, G2ELab, Grenoble Elect Engn Lab, F-38402 St Martin Dheres, France

[2] Univ Twente, MESA Inst Nanotechnol, TST, Enschede, Netherlands

[3] Tver State Univ, Lab Magnetoelect, Tver, Russia

关键词: Levitation;    Diamagnetic;    Stable;    Permanent magnet;    Microsystems;    MEMS;    Magneto-optic;    MagMEMS;   

DOI  :  10.1016/j.jmmm.2008.08.115

来源: Elsevier

【 摘 要 】

A disc-shaped SmCo magnet with a diameter of 0.85 mm is levitated above a graphite diamagnetic plate at a height of about 14 mm. The magnet is magnetised into a double dipole. The levitation of multipolar magnets above a diamagnetic material was suggested in 1956 by Boerdijk and patented in 1995 by Pelrine, but without any known published experimental results. In this letter, both theoretical and experimental results are presented. (C) 2008 Elsevier B. V. All rights reserved.

【 授权许可】

Free