Evidence of the self-heating effect on surface reactivity and gas sensing of metal oxide nanowire chemiresistors

Evidence of the self-heating effect on surface reactivity and gas sensing of metal oxide nanowire chemiresistors

The effect of Joule self-heating of the semiconducting metal oxide nanowire (here (and below unless specified), due to the generality of the effect, we use the term 'nanowire' without specification as to whether the nanobelt or other class of quasi-1D nanostructure is considered) conductom...

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Veröffentlicht in:Nanotechnology 2008-09, Vol.19 (35), p.355502-355502
Hauptverfasser: Strelcov, Evgheni, Dmitriev, Serghei, Button, Bradley, Cothren, Joshua, Sysoev, Victor, Kolmakov, Andrei
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container_end_page 355502
container_issue 35
container_start_page 355502
container_title Nanotechnology
container_volume 19
creator Strelcov, Evgheni
Dmitriev, Serghei
Button, Bradley
Cothren, Joshua
Sysoev, Victor
Kolmakov, Andrei
description The effect of Joule self-heating of the semiconducting metal oxide nanowire (here (and below unless specified), due to the generality of the effect, we use the term 'nanowire' without specification as to whether the nanobelt or other class of quasi-1D nanostructure is considered) conductometric gas sensor on its surface reactivity and kinetics is demonstrated. Due to small thermal capacitance and hampered thermal losses from the nanowire to its surroundings, the sensor was able to operate without a heater, consuming only a few microwatts of power. These results demonstrate the importance of the self-heating effect in nanowire electronics and its potential use in chemical and bio-sensing, where the ultra-small size of the active element and minimal power consumption are crucial.
doi_str_mv 10.1088/0957-4484/19/35/355502
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title Evidence of the self-heating effect on surface reactivity and gas sensing of metal oxide nanowire chemiresistors
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