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

ABSTRACT: 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 TiO_x 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.

SUBMITTER: Fedorov F

PROVIDER: S-EPMC5575241 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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

Fedorov Fedor F Vasilkov Michail M Lashkov Andrey A Varezhnikov Alexey A Fuchs Dirk D Kübel Christian C Bruns Michael M Sommer Martin M Sysoev Victor V

Scientific reports 20170829 1

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 prod ...[more]

PMID: 28852172

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