Abstract
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 μm, which is emitted from a quantum cascade laser. This device is ideal for (bio-)chemical sensing applications.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Cocaine / analysis*
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Germanium / chemistry
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Lasers, Semiconductor
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Microfluidic Analytical Techniques / instrumentation
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Microfluidic Analytical Techniques / methods*
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Silicon / chemistry
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Spectrophotometry, Infrared*
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Tetrachloroethylene / chemistry
Substances
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Germanium
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Cocaine
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Tetrachloroethylene
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Silicon