Detection of NO2 down to ppb Levels Using Individual and Multiple In2O3 Nanowire Devices
Nano Letters2004Vol. 4(10), pp. 1919–1924
Citations Over TimeTop 1% of 2004 papers
Abstract
We demonstrate detection of NO2 down to ppb levels using transistors based on both single and multiple In2O3 nanowires operating at room temperature. This represents orders-of-magnitude improvement over previously reported metal oxide film or nanowire/nanobelt sensors. A comparison between the single and multiple nanowire sensors reveals that the latter have numerous advantages in terms of great reliability, high sensitivity, and simplicity in fabrication. Furthermore, selective detection of NO2 can be readily achieved with multiple-nanowire sensors even with other common chemicals such as NH3, O2, CO, and H2 around.
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