IR emitting Dy3+ doped chalcogenide fibers for in situ CO2 monitoring in high pressure microsystems
Language
en
Article de revue
This item was published in
International Journal of Greenhouse Gas Control. 2016, vol. 55, p. 36-41
Elsevier
English Abstract
This paper reports the carbon dioxide detection in silicon-Pyrex high pressure microfluidic devices mimicking geological conditions encountered in deep saline aquifers using an in situ infrared optical sensor. The middle ...Read more >
This paper reports the carbon dioxide detection in silicon-Pyrex high pressure microfluidic devices mimicking geological conditions encountered in deep saline aquifers using an in situ infrared optical sensor. The middle infrared source inserted inside the microchannel is based on infrared emission from Dy3+ sulfide glass fibers. The broad emission of the Dy3+ doping in infrared fibers is used to directly probe the CO2 thanks to the perfect overlap between the rare earth emission centered at 4.4 μm and the CO2 absorption band located at 4.3 μm. CO2 and water were clearly distinguished when using segmented flow on chip at pressures ranging from 4.5 to 6 MPa. These results demonstrate the feasibility of the infrared optical detection of other gases displaying absorption bands in the middle infrared domain for further developments of gas sensors, which can find applications in geological media monitoring and microfluidics.Read less <
English Keywords
Carbon dioxide
Microreactors
Geological lab-on-chip
Optical absorption spectroscopy
Chalcogenide glass and fiber
Rare earth infrared luminescence
ANR Project
Micro-laboratoires géologiques sur puce pour l'étude des processus clés du transport réactif multiphasique appliqués au stockage géologique du CO2. - ANR-12-SEED-0001
Origin
Hal imported