A Unique Ionization Gas Sensor with Extraordinary Susceptibility of Sub-1-Volt

Hai Liu, Bo Wang, Yutong Han, Zhi Yang, Zhongyu Hou*, Yizhong Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this study, an ionization gas sensor device assembled by a nanoneedle array and a single nanowire is reported. Each nanoneedle is hybridized and consists of the Si nanorod with platinum nanocrystallites on the top. In the device, nanoneedle arrays serve as one electrode and the single silicon nanowire as the counter electrode to form a unique asymmetric discharge space. We believe that gas between this electrode pair is polarized and directly ionized in an extremely high electrical field, which is confirmed by the microstructure characterization, gas-sensing test and theoretic calculation. The advantage of ultralow operation voltage, power consumption with trace sensing ability renders the device an extraordinary ionization gas sensor.

Original languageEnglish
Article number8794558
Pages (from-to)3423-3428
Number of pages6
JournalIEEE Sensors Journal
Volume20
Issue number7
DOIs
Publication statusPublished - Apr 1 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2001-2012 IEEE.

ASJC Scopus Subject Areas

  • Instrumentation
  • Electrical and Electronic Engineering

Keywords

  • Gas detectors
  • gas discharge devices
  • nanofabrication
  • nanosensors
  • single nanowire device

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