一种集成传感器/致动器电极的双向电化学驱动微液体加药系统

Proceedings IEEE Thirteenth Annual International Conference on Micro Electro Mechanical Systems (Cat. No.00CH36308) Pub Date : 2000-01-23 DOI:10.1109/MEMSYS.2000.838496

S. Bohm, W. Olthuis, P. Bergveld

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引用次数: 19

摘要

在这个贡献的微液体计量系统提出，它允许双向操纵流体(即推出和拉进的液体)的电化学产生和去除气泡。双向性是通过驱动电流的反转来获得的，从而使先前产生的气体反应回水。气体体积的减少会主动将液体拉回系统。电化学致动器电极专门设计用于同时测量电导率，通过电导率可以估计气体总量。由于该量等于液体的总给药体积，因此可以在实验过程中在线确定分配体积。

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A bi-directional electrochemically driven micro liquid dosing system with integrated sensor/actuator electrodes

In this contribution a micro liquid dosing system is presented, which allows bi-directional manipulation of fluids (i.e. pushing out and pulling in of liquids) by the electrochemical generation and removal of gas bubbles. Bi-directionality is obtained by reversal of the actuation current thereby causing the earlier produced gasses to react back to water. This reduction of gas volume actively pulls liquid back into the system. The electrochemical actuator electrodes have been specially designed to perform the simultaneous measurement of conductivity, via which the total amount of gas can be estimated. As this amount equals the total dosed volume of liquid, dispensed volumes can be determined on-line during experiments.

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Proceedings IEEE Thirteenth Annual International Conference on Micro Electro Mechanical Systems (Cat. No.00CH36308)

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