Ultra-portable explosives sensor based on a CMOS fluorescence lifetime analysis micro-system

Yue Wang, Bruce R. Rae, Robert K. Henderson, Zheng Gong, Jonathan Mckendry, Erdan Gu, Martin D. Dawson, Graham A. Turnbull, Ifor D. W. Samuel

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

This work explores the use of a green-light-emitting copolymer as a chemosensor to detect nitroaromatic-based explosive vapors by recording photoluminescence (PL) and time-resolved PL decay. We show successful detection of 10 ppb 1,4-dinitrobenzene (DNB) vapor. Both a conventional time-correlated single photon counting (TCSPC) device and CMOS time-resolved fluorescence lifetime microsystem are used in the DNB detection. An ultra-portable on-site explosive sensor based on the micro-system has also been demonstrated. This gives rise to the potential for real-time, reliable, inexpensive organic/inorganic hybrid explosives detection.

Original languageEnglish
Article number032115
Number of pages10
JournalAIP Advances
Volume1
Issue number3
DOIs
Publication statusPublished - Sept 2011

Keywords

  • Photoluminescence
  • Metal insulator semiconductor structures
  • Photon counting
  • Copolymers
  • Fluorescence
  • Polymers

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