Journal
TALANTA
Volume 139, Issue -, Pages 27-34Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.02.034
Keywords
Flexible gas sensors; Nanostructures; Functionalization; VOC
Categories
Funding
- South Moravian Programme - SoMoPro [4SGA8678, TEC2010-21357, TEC2013-48147]
- Ministerio de Economia y Competitividad [4SGA8678, TEC2010-21357, TEC2013-48147]
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Flexible gas sensor devices are fabricated and optimized by integrating directly, via a single-step vapor-phase deposition method, highly crystalline tungsten oxide nanostructures functionalized with either gold or platinum nanoparticles. Gas tests of these devices show significant improvements with respect to flexible gas sensors based on non-functionalized structures, including greater responses to various volatile organic compounds (ethanol, acetone, methanol and toluene) and better selectivity towards ethanol and methanol, as demonstrate results for the sensors based on platinum-functionalized structures. The method presented here, which includes the fabrication of the whole flexible gas sensing device and the integration of functional nanostructures without the Use of transfer methods, provides a simpler, faster and inexpensive method for the fabrication of highly functional flexible microsystems for gas sensing. (C) 2015 Elsevier B.V. All rights reserved.
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