Publication

Mid infrared waveguide spectroscopy for cocaine detection in liquid environments

Nico de Rooij, Hans Peter Herzig, Peter Van der Wal, Vincent Paeder, Lubos Hvozdara, Philip Wägli, Yu-Chi Chang, Joab Di Francesco
2012
Conference paper

Abstract

A 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.

Official source

https://infoscience.epfl.ch/record/181890?ln=en

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Mid infrared waveguide spectroscopy for cocaine detection in liquid environments

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Microfluidic-Based Study on the Activation and Evolution of Calcite Bio-Mineralization for Geotechnical Applications

Microfluidic-Based Study on the Activation and Evolution of Calcite Bio-Mineralization for Geotechnical Applications