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Cryptophane-Cladded Interferometric Waveguide Sensor for Aqueous Methane Detection

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Abstract

A nanophotonic sensor for sensitive detection of methane in water solution is presented. Cryptophane-A doped waveguide cladding provides for methane pre-concentration on a chip, resulting in a detection limit of 60 ppm (86 nM).

© 2017 Optical Society of America

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