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首页> 外文期刊>Electrophoresis: The Official Journal of the International Electrophoresis Society >Feedback control for noise-aided parallel micromanipulation of several particles using dielectrophoresis
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Feedback control for noise-aided parallel micromanipulation of several particles using dielectrophoresis

机译：使用介电电泳对多个颗粒进行噪声辅助的平行微操作的反馈控制

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摘要

The paper describes a novel control strategy for simultaneous manipulation of several microscale particles over a planarmicroelectrode array using dielectrophoresis. The approach is based on a combination of numerical nonlinear optimization, which gives a systematic computational procedure for finding the voltages applied to the individual electrodes, and exploitation of the intrinsic noise, which compensates for the loss of controllability when two identical particles are exposed to identical forces. Although interesting on its own, the proposed functionality can also be seen as a preliminary achievement in a quest for a technique for separation of two particles. The approach is tested experimentally with polystyrene beads (50 microns in diameter) immersed in deionized water on a flat microelectrode array with parallel electrodes. A digital camera and computer vision algorithm are used to measure the positions. Two distinguishing features of the proposed control strategy are that the range of motion is not limited to interelectrode gaps and that independent manipulation of several particles simultaneously is feasible even on a simple microelectrode array.
机译：该论文描述了一种新颖的控制策略，用于使用介电电泳同时控制平面微电极阵列上的几个微米级颗粒。该方法基于数​​值非线性优化的组合，该组合提供了系统的计算程序来查找施加到各个电极上的电压，并利用了固有噪声，这补偿了当两个相同的粒子暴露于相同的粒子时可控性的损失。力量。尽管本身很有趣，但在寻求分离两个粒子的技术时，提出的功能也可以看作是初步的成就。该方法通过将聚苯乙烯珠（直径为50微米）浸入去离子水中的带有平行电极的扁平微电极阵列上进行实验测试。数码相机和计算机视觉算法用于测量位置。所提出的控制策略的两个显着特征是，运动范围不限于电极间间隙，并且即使在简单的微电极阵列上，同时对几个粒子进行独立操作也是可行的。

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