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Effective design and fabrication of low-power-consumption self-heated SnO2 nanowire sensors for reducing gases
Hanoi University of Science and Technology. (ITIMS)
Hanoi University of Science and Technology. (ITIMS)
Hanoi University of Science and Technology. (ITIMS)
Hanoi University of Science and Technology. (ITIMS)
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2019 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 295, p. 144-152Article in journal (Refereed) Published
Abstract [en]

Developing metal oxide gas sensors for internet-of-things (IoT) and portable applications require low-power consumption because of the limited battery in devices. This requirement is challenging because metal oxide sensors generally need high working temperatures, especially for reducing gases. Herein, we present an effective design and fabrication method of a SnO2 nanowire (NW) sensor for reducing gases by using the Joule heating effect at NW nanojunctions without needing an external or integrated heater. The sensor’s low-power consumption at around 4 mW was controlled by the size and nanojunction density of the device. The sensor has a simple design and is easy to fabricate. A proof-of-concept of a portable gas sensor module can be realised for monitoring highly toxic reducing gases, such as H 2S, NH3 and C2H5OH, by using the developed self-heated NWs.

Place, publisher, year, edition, pages
2019. Vol. 295, p. 144-152
Keywords [en]
SnO2 nanowires; Nanojunction; Self-heated sensor; Low-power consumption.
National Category
Nano Technology Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-388489DOI: 10.1016/j.snb.2019.05.074ISI: 000469849800018OAI: oai:DiVA.org:uu-388489DiVA, id: diva2:1333389
Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-08-16Bibliographically approved

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The full text will be freely available from 2021-05-23 11:25
Available from 2021-05-23 11:25

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