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  • Opto-electronic nose sniffs out toxic gases

    The printed array is made up of nanoporous pigments that change color in response to their chemical environment. The color differences are shown for a few representative poison gases.

    The printed array is made up of nanoporous pigments that change color in response to their chemical environment. The color differences are shown for a few representative poison gases.

    Photo by Ken Suslick

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  • Editor's note: Lim SH, Feng L, Kemling JW, Musto CJ, Suslick KS. 2009. An Optoelectronic Nose for Detection of Toxic Gases. Nature Chemistry. Published Online in Advance of Print. DOI: 10.1038/NCHEM.360.