Multi-sensor system based on phase detection, an LED array, and luminophore-doped xerogels

V. P. Chodavarapu, R. M. Bukowski, S. J. Kim, A. H. Titus, A. N. Cartwright, F. V. Bright

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

An optical multi-sensor system based on the excited-state lifetime of luminophore doped xerogels is described. The system is based on the novel concept of combining addressable surface-mount light-emitting diode (SM-LED) arrays with doped xerogel thin films; each SM-LED in the array is coated with a different xerogel-based sensor element. Each sensor element exhibits a unique response profile to the target analyte. A prototype system with a 2 × 2 LED array is presented, with three of the LEDs coated with xerogel-based sensing layers, each layer having a different sensitivity and response profile to oxygen (O2).

Original languageEnglish (US)
Pages (from-to)1031-1033
Number of pages3
JournalElectronics Letters
Volume41
Issue number18
DOIs
StatePublished - Sep 1 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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