Toward new gas-analytical multisensor chips based on titanium oxide nanotube array

Fedor Fedorov, Michail Vasilkov, Andrey Lashkov, Alexey Varezhnikov, Dirk Fuchs, Christian Kübel, Michael Bruns, Martin Sommer, Victor Sysoev

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)


    Reliable environmental monitoring requires cost effective but highly sensitive and selective gas sensors. While the sensitivity of the sensors is improved by reducing the characteristic dimensions of the gas-sensing material, the selectivity is often approached by combining the sensors into multisensor arrays. The development of scalable methods to manufacture such arrays based on low-dimensional structures offers new perspectives for gas sensing applications. Here we examine an approach to produce multisensor array chips based on the TiOx nanotube layers segmented by multiple Pt strip electrodes. We study the sensitivity and selectivity of the developed chip at operating temperatures up to 400 °C towards organic vapors in the ppm range. The results indicate that the titania nanotubes are a promising material platform for novel cost-effective and powerful gas-analytical multisensor units.

    Original languageEnglish
    Article number9732
    JournalScientific Reports
    Issue number1
    Publication statusPublished - 1 Dec 2017


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