Particle trapping and undulation of a liquid surface using a microscopically modulated magnetic field
Particle trapping and undulation of a liquid surface using a microscopically modulated magnetic field
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DOI：
10.1021/la035768m
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发表时间：
2004-02-03
期刊：
影响因子：
3.9
通讯作者：
Nara, A
中科院分区：
文献类型：
--
作者：
Kimura, T;Yamato, M;Nara, A
将铝/铁层状块（周期性为300 μ m）置于均匀磁场（约100 μ m）中。1 T）以在块表面上产生磁场的周期性调制。这种调制引起了在块上散布的薄液体层的表面的波动。使用相同的调制场以周期性线图案捕获聚苯乙烯球（直径为20 μ m，悬浮在液体中）。在本实验装置中，球体被捕获在块的铁层上方，其中场强较低。干燥后，捕获的球体形成自组织堆积。
An aluminum/iron-layered block (periodicity of 300 mum) was placed in a homogeneous magnetic field (ca. 1 T) to produce a periodic modulation of the magnetic field over the block surface. This modulation caused an undulation of the surface of a thin liquid layer spread over the block. The same modulated field was used to trap polystyrene spheres (20 mum in diameter suspended in a liquid) in a periodic line pattern. The spheres were trapped above the iron layers of the block where the field strength is lower in the present experimental setup. Upon drying, the trapped spheres formed self-organized packing.