During the past two decades, one-dimensional (1D) metal-oxide nanowire (NW)-based molecular sensors have been witnessed as promising candidates to electrically detect volatile organic compounds (VOCs) due to their high surface to volume ratio, single crystallinity, and well-defined crystal orientations. Furthermore, these unique physical/chemical features allow the integrated sensor electronics to work with a long-term stability, ultra-low power consumption, and miniature device size, which promote the fast development of “trillion sensor electronics” for Internet of things (IoT) applications. This review gives a comprehensive overview of the recent studies and achievements in 1D metal-oxide nanowire synthesis, sensor device fabrication, sensing material functionalization, and sensing mechanisms. In addition, some critical issues that impede the practical application of the 1D metal-oxide nanowire-based sensor electronics, including selectivity, long-term stability, and low power consumption, will be highlighted. Finally, we give a prospective account of the remaining issues toward the laboratory-to-market transformation of the 1D nanostructure-based sensor electronics.
CITATION STYLE
Zeng, H., Zhang, G., Nagashima, K., Takahashi, T., Hosomi, T., & Yanagida, T. (2021, February 1). Metal-oxide nanowire molecular sensors and their promises. Chemosensors. Multidisciplinary Digital Publishing Institute (MDPI). https://doi.org/10.3390/chemosensors9020041
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