在无通道磁性条纹膜上组装和引导的功能胶体微筛
Functional colloidal micro-sieves assembled and guided above a channel-free magnetic striped film
摘要：
芯片实验室设备中的胶体内含物可以用于以非侵入性方式执行分析操作。我们在这里展示了一种新的方法来实现快速和可逆的微筛分操作通过操纵和运输胶体链通过移动畴壁在磁性结构基板。我们表明，这种技术可以精确地移动和筛选非磁性颗粒，镊子微观货物或机械压缩高密度的胶体单层。
英文摘要：
Colloidal inclusions in lab-on-a-chip devices can be used to perform analytic operations in a non-invasive fashion. We demonstrate here a novel approach to realize fast and reversible micro-sieving operations by manipulating and transporting colloidal chains via mobile domain walls in a magnetic structured substrate. We show that this technique allows to precisely move and sieve non-magnetic particles, to tweeze microscopic cargos or to mechanically compress highly dense colloidal monolayers.
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