Journal
NANO LETTERS
Volume 14, Issue 2, Pages 933-938Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl404335p
Keywords
Field effect transistor; sensor; artificial neural network; selective; volatile organic compound; vapor
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Funding
- FP7-Health Program under the LCAOS [258868]
- Israel Council for Higher Education
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The use of molecularly modified Si nanowire field effect transistors (SiNW FETs) for selective detection in the liquid phase has been successfully demonstrated. In contrast, selective detection of chemical species in the gas phase has been rather limited. In this paper, we show that the application of artificial intelligence on deliberately controlled SiNW FET device parameters can provide high selectivity toward specific volatile organic compounds (VOCs). The obtained selectivity allows identifying VOCs in both single-component and multicomponent environments as well as estimating the constituent VOC concentrations. The effect of the structural properties (functional group and/or chain length) of the molecular modifications on the accuracy of VOC detection is presented and discussed. The reported results have the potential to serve as a launching pad for the use of SiNW FET sensors in real-world counteracting conditions and/or applications.
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