抗磁悬浮研究综述

Diamagnetic Levitation: A Review

抗磁悬浮技术利用物质的抗磁特性,无需外界能量输入即可实现常温被动静态稳定悬浮,获得众多学者的关注。尤其是近30年来,随着微细制造与强磁场技术的发展,抗磁悬浮相关研究持续增加。目前,国外众多研究机构基于抗磁悬浮原理已经开展了较为丰富的相关研究工作,但国内在该领域的研究成果相对较少,研究内容较为单一。针对国内该领域这一研究现状,从抗磁悬浮机理、抗磁悬浮特点及抗磁悬浮相关应用研究成果进行全面的综述。提出抗磁悬浮不仅具备无磨损、无需润滑、低能耗等优点外,还具有常温被动静态稳定悬浮、微纳米尺度应用、低刚度等特点;指出该技术在微纳旋转机械、振动能量捕获、高灵敏度传感器、生物细胞/微粒子操纵等领域具有非常广阔的应用前景。为国内学者开展相关抗磁悬浮研究提供了综述资料。

With the diamagnetic material property,diamagnetic levitation possesses the special advantages of passive static and stablelevitation at room temperature,which has attracted many scholars.Especially in the recent three decades,with the development ofstrong magnetic field equipment and micro technology,increasing publications on diamagnetic levitation research are appearing.Many foreign researches have done the relative investigations;however,the domestic researches in this field are relatively few andnarrow.Aimed at this situation,a review of diamagnetic levitation technology including diamagnetic theory,diamagneticcharacteristics and relative application research works is presented.The diamagnetic levitation technology not only possessesfree-contact,no-lubrication and low energy consumption merits,but also permits advantages such as passive static and stablelevitation at room temperature,micro-nano application and low supporting stiffness,which may possess potential and promisingapplication ranging from micro rotating machinery,energy harvesting,high sensitive MEMS-sensor to cell/particle manipulation.Areview of diamagnetic levitation is provided,which is helpful for the domestic researchers.