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Title: Single-nanowire fuse for ionization gas detection
Authors: Liu, Hai
Zhu, Wenhuan
Han, Yutong
Yang, Zhi
Huang, Yizhong
Keywords: Engineering::Materials
Issue Date: 2019
Source: Liu, H., Zhu, W., Han, Y., Yang, Z., & Huang, Y. (2019). Single-nanowire fuse for ionization gas detection. Sensors, 19(20), 4358-. doi:10.3390/s19204358
Journal: Sensors
Abstract: Local electric field enhancement is crucial to detect gases for an ionization gas sensor. Nanowires grown collectively along the identical lattice orientation have been claimed to show a strong tip effect in many previous studies. Herein, we propose a novel ionization gas detector structure by using a single crystalline silicon nanowire as one electrode that is placed above the prepatterned nanotips. A significant improvement of the local electric field in its radical direction was obtained leading to an ultralow operation voltage for gas breakdown. Different from the tip of the nanowire in the reported ionization gas sensors, the gaseous discharge current in this device flows towards the sidewall in the case of a trace amount of gas environment change. Technically, this discharge current brings about a sudden temperature rise followed by a fusion of the silicon nanowire. Such unique fusibility of a single nanowire in this gas detection device suggests a novel architecture that is portable and in-site executable and can be used as an integrated gas environmental monitor.
ISSN: 1424-8220
DOI: 10.3390/s19204358
Rights: © 2019 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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