Low-temperature gas sensing in individual metal-oxide-metal heterojunction nanowires

作者: Jason S. Tresback , Nitin P. Padture

DOI: 10.1557/JMR.2008.0270

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摘要: CO-gas-sensing response of individual metal–oxide–metal (MOM) heterojunction nanowires (∼250 nm diameter) in the Au–NiO–Au system, where a nanoscale segment NiO oxide long) is sandwiched axially between Au nanowires, and all-oxide diameter, ∼5 μm long), has been measured at 150 °C. While are highly resistive show no measurable response, MOM ∼25% decrease current with introduction 800 ppm CO. The reversible, but it slow due to low temperature used. by virtue nanoscale-dimension, low-resistance high-quality “end-on” metal–oxide contact, an attractive class nanowire gas-sensing elements for potential use multifunctional “bottom up” nanoelectronics.

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