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Photonic Crystal Based Sensor for Organic Solvents and for Solvent-Water Mixtures

URN to cite this document:
urn:nbn:de:bvb:355-epub-275112
Fenzl, Christoph ; Hirsch, Thomas ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 30 Jan 2013 12:51


Abstract

Monodisperse polystyrene nanoparticles with a diameter of 173 nm were incorporated into a polydimethylsiloxane matrix where they display an iridescent color that can be attributed to the photonic crystal effect. The film is of violet color if placed in plain water, but turns to red in the presence of the non-polar solvent n-hexane. Several solvents were studied in some detail. We show that such ...

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