Sensitive Nanoflowers

At China's Harbin University, researchers have created an alcohol detector that requires heating only to 140°C, as opposed to the 300°C for conventional sensors made of zinc oxide. They achieved this by building zinc oxide "nanoflowers" which, because of their large size-to-surface ratio, are exquisitely sensitive to ethanol and undergo a change in resistance in its presence. Each flower consists of bundles of nanorods 15 nm wide. The devices might also prove useful as catalysts.

IOP/Harbin Engineering University
IOP/Harbin Engineering University

(www.sensorsmag.com/0906/RDNano~)

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