Mid infrared waveguide spectroscopy for cocaine detection in liquid environments
Chang, Yu-Chi; Wägli, Philip; Paeder, Vincent; Homsy, Alexandra; Hvozdara, Lubos; van der Wal, Peter; Di Francesco, Joab; de Rooij, Nico; Herzig, Hans Peter
2012

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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.

Details

Title Mid infrared waveguide spectroscopy for cocaine detection in liquid environments
Author(s) Chang, Yu-Chi ; Wägli, Philip ; Paeder, Vincent ; Homsy, Alexandra ; Hvozdara, Lubos ; van der Wal, Peter ; Di Francesco, Joab ; de Rooij, Nico ; Herzig, Hans Peter
Published in Proceedings of the EOS Annual Meeting
Issue 6025
Conference EOS Annual Meeting 2012, TOM 1 - Biophotonics: Optical Manipulation and OCT Imaging in Life Sciences and Medicine, Aberdeen, Scotland, UK, 25-28 September, 2012
Date 2012
ISBN 978-3-9815022-4-4
Keywords
Laboratories SAMLAB
OPT
Record Appears in Scientific production and competences > STI - School of Engineering > STI Archives > SAMLAB - Sensors, Actuators and Microsystems Laboratory
Scientific production and competences > STI - School of Engineering > STI Archives > OPT - Optics and Photonics Technology Laboratory
Conference Papers
Work produced at EPFL
Published
Record creation date 2012-10-25

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