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积极驱动的光定位传感器/执行器系统用于自动化pH控制,用于集成到芯片上的实验室 (LoC) 平台中

Rene Welden^1,2, Anirban Das³, Steffi Krause³

¹Institute of Nano- and Biotechnologies (INB), Aachen University of Applied Sciences, Heinrich-Mußmann-Str. 1, Jülich 52428, Germany.

|March 6, 2024

概括

本研究介绍了微流体系统的光控制半导体传感器和电极,可以在没有内部组件的情况下精确生成和测量pH梯度.

科学领域:

微流体学微流体学
化学传感器化学传感器
半导体设备半导体设备

背景情况:

微流体系统面临的挑战是整合内部传感器和执行器.
对微流体环境的外部控制对于生物和化学应用至关重要.

研究的目的:

为了演示一个微流体系统与外部控制,光可定位的传感器和执行器.
为了在微通道内精确地控制pH梯度的空间和时间.

主要方法:

集成一个可光定位的电位计传感器 (Al/Si/SiO2/Si3N4) 用于pH测量.
整合光可定位电极 (玻璃/SnO2:F/TiO2) 用于光电催化 pH 控制.
在静态和动态流动下,传感器和电极在微流体设置中的同时运行.

主要成果:

在动态流量条件下,达到 pH 变化达 ΔpH 3.52 .
证明了与流量垂直的量身定制的pH梯度 (ΔpH 1.42).
通过同步光可定位电极照明展示了逐步增加的pH值.

结论:

外部光控制的半导体设备为先进的微流体控制提供了可行的解决方案.
开发的系统允许精确生成和监测微流体通道中的pH梯度.
这项技术在芯片实验室设备和化学分析中具有潜在的应用.

关键词:

芯片上的实验室电极可以对照光.具有光定位的电位计传感器.微流体装置的设置检测pH值变化的检测

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