Gas sensors based on individual indium oxide nanowire

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• 作者：Guillem Domè ; nech-Gil^a ; ^{guillemdom@gmail.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Sven Barth^bAuthor Vitae ; Jordi Sam&agrave ; ^aAuthor Vitae ; Paolo Pellegrino^aAuthor Vitae ; Isabel Gr&agrave ; cia^cAuthor Vitae ; Carles Cané ; ^cAuthor Vitae ; Albert Romano-Rodriguez^aAuthor Vitae
• 关键词：Indium oxide ; Nanowires ; Gas nanosensor ; Chemoresistor
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：238
• 期：Complete
• 页码：447-454
• 全文大小：1725 K

文摘

Indium oxide nanostructures have been prepared by carbothermal reduction method. From them, nanowires have been structurally and optically characterized using X-ray diffraction, scanning and transmission electron microscopy and photoluminescence. The indium oxide nanowires have been removed from the substrate and contacted by Focused Electron- and Focused Ion-Beam Induced Deposition techniques to interdigitates on suspended microhotplates, which allow heating up to 300 °C with a low power consumption of only 8 mW. The gas response of the tested devices towards ethanol, carbon monoxide and nitrogen dioxide diluted in dry synthetic air at different concentrations and temperatures has been carried out showing a selectivity towards ethanol with responses up to 50% at temperatures between 200 and 300 °C, while only small response to high concentrations of carbon monoxide and nitrogen dioxide is observed.