向列相胶体团在光敏表面的聚集和输运
Nematic Colloidal Swarms Assembled and Transported on Photosensitive Surfaces
摘要：
我们展示了一种新的方法来组装和运输成群的胶体颗粒相结合的液晶使能电泳和光敏表面图案化。胶体粒子通过施加交流电场而在液晶中被推进。粒子群被组装成旋转的研磨机集群，或者作为一个整体沿着预定义的路径移动，光印在化学功能化的基底上。该技术代表了基于流体的芯片实验室技术的替代方法，该技术引导微米级固体或液体夹杂物的大集合的运动。
英文摘要：
We demonstrate a novel method to assemble and transport swarms of colloidal particles by combining liquid crystals enabled electrophoresis and photo-sensitive surface patterning. Colloidal particles are propelled in a nematic liquid crystal via application of an alternating current electric field. Swarms of particles are assembled into a rotating mill cluster, or moved as a whole along predefined paths photo-imprinted on chemically functionalized substrates. This technique represents an alternative approach to fluid based lab-on-a-chip technologies guiding the motion of large ensembles of micrometer scale solid or liquid inclusions.
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