摘要
磁珠具有偶联容量高、比表面积大、易于操控等特点,基于磁珠技术的电磁MEMS可实现磁珠液滴非接触式操控,其微线圈三维磁场分析是磁珠操控优化设计的基础。对静态液体磁珠操控进行了理论分析,确定了影响磁珠操控的主要因素,并应用毕奥-萨伐尔定律和积分方程法,对关键部件微线圈的三维微磁场分布特性进行了分析。运用成熟的商业有限元分析工具Ansys建模分析微线圈三维静态磁场,所得结果与数值计算方法进行了比较,表明所用方法对于磁珠微系统三维恒定磁场的分析是可行的。
With the features of high coupled capacity, large specific surface area as well as easy control,non-contacted control of magnetic bead droplets is realized based on MEMS of magnetic bead technology,which analysis for three-dimensional magnetic field of the micro planar coil is the core of opti-mum controlling design. The manipulating theory of magnetic beads in static liquid is analyzed to identify the main factors which affect the magnetic beads manipulation and analyze the magnetic distribution char-acter of micro planar coil by applying b iot-savart law and integral equation method（IEM）.While using the sophisticated business finite element analysis tool Ansys the three dimensional static magnetic field of mi-cro planar coil is analyzed,which results are compared with numerical calculation and prove that the method used in analyzing three-dimensional stationary magnetic field for magnetic beads microsystems is feasible.
出处
《机械设计与制造》
北大核心
2012年第2期45-47,共3页
Machinery Design & Manufacture
基金
河南省教育厅项目(2008A460014)
关键词
微线圈
磁珠操控
三维磁场
数值计算
仿真
Micro planar coil
Magnetic bead manipulation
Three-dimensional magnetic field
Numerical calculation
Simulation
