利用电解产生的气泡体积提高灵敏度的pH传感器的研制

J. Sim, D. Kwon, J. Kim
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引用次数: 0

摘要

我们展示了一种新颖而简单的电解pH传感器。pH传感器由驱动和传感电极组、微通道和微储槽嵌入式PDMS部分组成。电极在硅衬底上通过一步升降形成,通道和储层在PDMS上成型。电解产生的氢气气泡的体积取决于pH值,气泡将储层中pH值的缓冲溶液推入微通道。推挤的距离导致感应电极之间的电流变化。实验结果表明,所研制的pH传感器在强酸环境下具有较强的传感响应,且随着电解时间的延长,传感分辨率有所提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of pH sensor with enhanced sensitivity using volume of bubbles generated by electrolysis
We have demonstrated a novel and simple pH sensor using electrolysis process. The pH sensor is composed of actuating and sensing electrodes sets, micro-channel and micro-reservoir embedded PDMS part. The electrodes on silicon substrate are formed by a single-step lift-off, and the channel and reservoir are molded on PDMS. The volume of hydrogen bubbles generated by electrolysis is dependent on the pH value, and the bubbles push the pH buffer solution in the reservoir into the micro-channel. The pushed distance results in the current changes between the sensing electrodes. The experimental results show that the developed pH sensor gives enhanced sensing response at strong acid, and the sensing resolution can be enhanced as the electrolysis time increases.
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