Cocaine detection by a mid-infrared waveguide integrated with a microfluidic chip

Cocaine detection by a mid-infrared waveguide integrated with a microfluidic chip

A germanium (Ge) strip waveguide on a silicon (Si) substrate is integrated with a microfluidic chip to detect cocaine in tetrachloroethylene (PCE) solutions. In the evanescent field of the waveguide, cocaine absorbs the light near 5.8 m, which is emitted from a quantum cascade laser. This device is...

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Veröffentlicht in:Lab on a chip 2012-09, Vol.12 (17), p.32-323
Hauptverfasser: Chang, Yu-Chi, Wägli, Philip, Paeder, Vincent, Homsy, Alexandra, Hvozdara, Lubos, van der Wal, Peter, Di Francesco, Joab, de Rooij, Nico F, Peter Herzig, Hans
Format: Artikel
Sprache:eng
Schlagworte:
Cocaine - analysis
Germanium - chemistry
Lasers, Semiconductor
Microfluidic Analytical Techniques - instrumentation
Microfluidic Analytical Techniques - methods
Silicon - chemistry
Spectrophotometry, Infrared
Tetrachloroethylene - chemistry
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Zusammenfassung:A germanium (Ge) strip waveguide on a silicon (Si) substrate is integrated with a microfluidic chip to detect cocaine in tetrachloroethylene (PCE) solutions. In the evanescent field of the waveguide, cocaine absorbs the light near 5.8 m, which is emitted from a quantum cascade laser. This device is ideal for (bio-)chemical sensing applications. We present a mid-infrared waveguide integrated with a microfluidic chip for sensing in a liquid environment.
ISSN:1473-0197
1473-0189
DOI:10.1039/c2lc40601b