Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 1, Pages 340-344Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201408617
Keywords
hydrogen sensing; Langmuir-Blodgett technique; nanowires; sensors; tungsten
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Funding
- ETH Zurich [ETH-28 13-1]
- Swiss National Science Foundation [200021_140581]
- China Scholarship Council
- Swiss National Science Foundation (SNF) [200021_140581] Funding Source: Swiss National Science Foundation (SNF)
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Alignment of nanowires over a large area of flat and patterned substrates is a prerequisite to use their collective properties in devices such as gas sensors. In this work, uniform single-crystalline ultrathin W18O49 nanowires with diameters less than 2nm and aspect ratios larger than 100 have been synthesized, and, despite their flexibility, assembled into thin films with high orientational order over a macroscopic area by the Langmuir-Blodgett technique. Alignment of the tungsten oxide nanowires was also possible on top of sensor substrates equipped with electrodes. Such sensor devices were found to exhibit outstanding sensitivity to H-2 at room temperature.
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