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Tuning of the Humidity-Interference in Gas Sensitive Columnar ZnO Structures

AuthorsVallejos, Stella; Gràcia, Isabel; Pizúrová, Nadezda; Figueras, Eduardo; Hubálek, Jaromir; Cané Ballart, Carles
Issue Date2017
PublisherMultidisciplinary Digital Publishing Institute
CitationProceedings of Eurosensors 1 (4): 417 (2017)
AbstractGas microsensors based on columnar zinc oxide structures (rods and needles) with different aspect ratios and wetting properties are developed via aerosol-assisted chemical vapor deposition. The correlation between their wetting properties and degree of humidity-interference in gas sensing is presented. Gas sensing tests of these systems to hydrogen demonstrate noticeable lower humidity-interference for the columnar zinc oxide structures in the form of needles provided of higher hydrophobicity, as opposed to those in the form of rods, suggesting that a tuning of the wetting properties in metal oxides could allow for the humidity-resilient detection of gaseous analytes.
Publisher version (URL)https://doi.org/10.3390/proceedings1040417
Identifiersdoi: 10.3390/proceedings1040417
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