Chang, Yu-ChiWägli, PhilipPaeder, VincentHomsy, AlexandraHvozdara, Lubosvan der Wal, PeterDi Francesco, Joabde Rooij, NicoHerzig, Hans Peter2012-10-252012-10-252012-10-252012https://infoscience.epfl.ch/handle/20.500.14299/86288A germanium strip waveguide on a silicon substrate is integrated with a microfluidic chip to detect cocaine in tetrachloroethylene solutions. In the evanescent field of the waveguide, cocaine absorbs the light at 5.8μm, which is emitted from a quantum cascade laser. The lowest measured concentration is 100μg/ml.Mid infraredwaveguide spectroscopycocaine detectiontext::conference output::conference proceedings::conference paper