Nano- and Microfluidic Channels as Electrokinetic Sensors and Energy Harvesting Devices - Importance of Surface Charge on Solid-Liquid Interfaces

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• 作者：Pal Arki ; ^{Pal.Arki@esm.tu-freiberg.de} ; Christine Hecker ; Frederic Gü ; th ; Yvonne Joseph
• 关键词：Nano- and Microfluidic ; Electrokinetic sensors ; Streaming Potential ; Energy Harvesting
• 刊名：Procedia Engineering
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：168
• 期：Complete
• 页码：1374-1377
• 全文大小：299 K
• 卷排序：168

文摘

The electrokinetic phenomena in charged micro- and nanochannels known as streaming current and streaming potential arise when pressure-driven fluid flow transport by advection induces both a current and a potential at the channel ends. This effect can be used as a sensor/transducer principle and also to generate electricity for sensor power supply and therefore represents a mechanism for converting mechanical work into electrical power. Electrokinetic sensors based on streaming potential/current can detect the adsorption of chemicals, drugs or biological markers as well as pressure/flow or pH value. Electrokinetic sensors are passive sensors, simple to build, and can be easily integrated into nano- and microfluidic lab-on-chip systems.