首页> 外文会议>International conference on optical instruments and technology : MEMS/NEMS technology and applications; 20081116-19; Beijing(CN) >Design and studies of a quadrupolar dielectrophoresis chip integrated with detection electrode
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Design and studies of a quadrupolar dielectrophoresis chip integrated with detection electrode

机译:集成有检测电极的四极介电电泳芯片的设计与研究

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This paper reports the design and experimental analysis of dielectrophoretic traps composed of four microfabricated gold electrodes excited in a quadrupolar fashion surrounding the electrodes with novel geometries for object detection. Implemented with a simple single-layer metal process, our microchip device makes the quadrupolar collection electrodes and detecting electrodes coplanar. Our scheme could not only make the collection system and the detection system in a chip integrated more easily, but provide possibility to synchronize the two systems and shorten response time. It is found that, at the low medium conductivities used, the existence of annular or parallel track detecting electrodes can hardly influence the separation efficiency, which shows that it is possible to drive targets to the object region rapidly by dielectrophoretic force while all the electrodes within a whole chip are coplanar. Dielectrophoresis effects of colloidal polystyrene particle are enhanced increasing the frequency of stimulating electric field.
机译:本文报道了介电泳陷阱的设计和实验分析,该陷阱由四个以四极方式激发的微细金电极组成,电极周围有新颖的几何形状用于物体检测。通过简单的单层金属工艺实现,我们的微芯片设备使四极收集电极和检测电极共面。我们的方案不仅可以使收集系统和检测系统更容易地集成在芯片中,而且可以使两个系统同步并缩短响应时间。结果发现,在使用低介质电导率的情况下,环形或平行轨道检测电极的存在几乎不会影响分离效率,这表明可以通过介电泳力快速将目标物驱动到目标区域,而内部的所有电极整个芯片是共面的。胶态聚苯乙烯颗粒的介电泳作用得到增强,从而增加了电场的刺激频率。

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