Journal of Sensors and Sensor Systems
Journal of Sensors and Sensor Systems
JSSS
Articles | Volume 12, issue 1
Articles | Volume 12, issue 1
https://doi.org/10.5194/jsss-12-123-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/jsss-12-123-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 1
Regular research article
 | 
12 Apr 2023
Regular research article |  | 12 Apr 2023

Compact silicon-based attenuated total reflection (ATR) sensor module for liquid analysis

Armin Lambrecht, Carsten Bolwien, Hendrik Fuhr, Gerd Sulz, Annett Isserstedt-Trinke, André Magi, Steffen Biermann, and Jürgen Wöllenstein

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Short summary
Infrared spectroscopy is great for determining the composition of liquids. Combined with attenuated total reflection (ATR), one can just put the sample on the sensitive surface. We made a compact device with a diamond-coated silicon ATR crystal to protect the surface against aggressive fluids. Silicon crystal, light source and detector are hermetically sealed in a housing. Our tests show that the diamond coating enhanced the sensitivity compared to uncoated ATR elements as predicted by theory.
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Special issue
Sensors and Measurement Systems 2022