Planar coil-based microsystem for the long-range transport of magnetic beads
Planar coil-based microsystem for the long-range transport of magnetic beads
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用于磁珠远距离传输的基于平面线圈的微系统
DOI：
10.1109/sensor.2003.1215310
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Gijs
中科院分区：
文献类型：
--
作者：
A. Rida;V. Fernandez;M. Gijs
我们提出了一种通过驱动简单的平面线圈阵列来实现磁性微珠在微流控通道中远距离传输的新方法。后者被放置在由永磁体产生的均匀静态磁场中。这种静电场对微珠施加了具有固定意义的磁矩。结果，当珠被放置在空间变化的场中时，作用在珠上的磁能和磁力被强烈地增强。然后，只有简单的平面线圈的非常小的磁场梯度足以使珠子移动超过许多毫米。
We propose a new approach for magnetic microbead transport in microfluidic channels over long-range distances by the actuation of a simple array of planar coils. The latter are placed in a uniform static magnetic field, generated by permanent magnets. This static field imposes a magnetic moment with a fixed sense to the microbeads. As a consequence, the magnetic energy and the magnetic forces acting on the beads are strongly enhanced, when the beads are placed in a spatially varying field. Only the very small magnetic field gradient of a simple planar coil is then sufficient to displace the beads over many millimeters.