Simultaneous Resistive and Ionization Readout of Single Metal Oxide Nanowires
Year: 2011
Type: conference-paper
Abstract: Gas detection experiments were performed with individual tin dioxide (SnO 2 ) nanowires specifically configured to observe surface ion (SI) emission response towards representative analyte species. These devices were found to work at much lower temperatures (T ≈ 280 °C) and bias voltages (V ≈ 2 V) than their micro-counterparts, thereby demonstrating the inherent potential of individual nanostructures in building functional nanodevices. The high selectivity of our miniaturized sensors emerges from the dissimilar sensing mechanisms of SI as compared to standard resistive (RES) type gas sensors. By employing this innovative detection principle (SI) together with conventional RES measurements, significantly improved selectivity can be attained with a single gas sensor device. Self-heating of the SnO 2 nanowires moreover opens up a road towards ultra-low power consumption gas sensors.
Source: Procedia Engineering
Authors: Francisco Ramirez-Hernandez, J. Daniel Prades, Joan R. Morante, Angelika Hackner, Sebastian Beer, Gerhard Müller, Thomas Fischer, Sanjay Mathur
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2013803546