Metal Oxide Semiconductor-Carbon Nanomaterial Network as a Flexible Chemical Sensor for Volatile Organic Compound Detection

摘要

Recently, wearable chemical sensors based on metal oxide semiconductors (MOSs) have attracted considerable attention for the detection of volatile organic compounds (VOCs) from exhaled breath as a noninvasive tool for diagnosing physiological condition at early stages. Since the conventional spectrometric techniques are highly sophisticated and a trained technician is required, nanomaterial-based chemiresistive sensors are alternative to this. We have fabricated a metal oxide-carbon nanocomposite-based flexible sensor using a low-cost screen-printing technique. Its microstructure and composition was characterized by a scanning electron microscope and an energy dispersive X-ray analysis. The fabricated sensor was able to detect volatile organic compounds at room temperature.