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Ionic Liquid Based Miniaturized Electrochemical Gas Sensor

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Description: The growing potential impact of airborne pollutants and explosive gases on human health and occupational safety has escalated the demand for sensors to monitor hazardous gases. Current preventative measures and treatments for air toxins are ineffective due in large part of our inability to properly characterize and quantify acute exposure to air pollutants. To overcome these challenges both in environment and human health, the goal of this project is to develop a wearable autonomous multi-gas sensor system capable of real-time individual environmental monitoring which could provide immediate feedback to warn the wearer of imminent environmental threats as well as a record of individual exposure that would aid the development of new treatment approaches. To achieve this goal, sensors, electronics, and data analysis algorithms were synergistically integrated into an autonomous wearable system. The electrochemical sensors featuring room temperature ionic liquid are utilized for low-power operation, high sensitivity and selectivity, and long life with low maintenance. Electrodes Microfabrication on porous membrane process was developed to build up planar miniaturized electrodes; array technology was designed for multi-gas detection.

Investigators: Heyu Yin