Mid-Infrared Chalcogenide Waveguides for Real-Time and Nondestructive Volatile Organic Compound Detection

Anal Chem. 2019 Jan 2;91(1):817-822. doi: 10.1021/acs.analchem.8b03004. Epub 2018 Dec 18.

Abstract

A mid-infrared (mid-IR) sensor chip was demonstrated for volatile organic compound (VOC) detection. The sensor consisted of As2Se3 optical waveguides built by microelectronic fabrication processes. The VOC sensing performance was characterized by measuring acetone and ethanol vapors at their characteristic C-H absorption from λ = 3.40 to 3.50 μm. Continuous VOC detection with <5 s response time was achieved by measuring the intensity attenuation of the waveguide mode. The miniaturized noninvasive VOC sensor can be applied to breath analysis and environmental toxin monitoring.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Acetone / analysis
  • Arsenicals / chemistry*
  • Ethanol / analysis
  • Selenium Compounds / chemistry*
  • Spectrophotometry, Infrared / instrumentation
  • Spectrophotometry, Infrared / methods
  • Volatile Organic Compounds / analysis*

Substances

  • Arsenicals
  • Selenium Compounds
  • Volatile Organic Compounds
  • Acetone
  • Ethanol