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Conference Paper

Microoptodes: the role of fibre tip geometry for the sensor performance

MPS-Authors
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Kohls,  Oliver
Permanent Research Group Microsensor, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Holst,  Gerhard A.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Kühl,  Michael
Permanent Research Group Microsensor, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Citation

Kohls, O., Holst, G. A., & Kühl, M. (1998). Microoptodes: the role of fibre tip geometry for the sensor performance. In European workshop on optical fibre sensors (pp. 106-108).


Cite as: https://hdl.handle.net/21.11116/0000-0005-4279-9
Abstract
Established sensors for fine scale measurements in natural environments are based on electrochemical measuring principles for e. g. oxygen and pH. The preparation of such electrochemical sensors is, however, a time consuming process. Based on the technical progress in the field of fibre optical measuring techniques many well-known chemical principles can now be used for the preparation of optical sensors, e.g. the oxygen measurement by luminescence quenching, and the pH-measurement with absorption based dyes. The use of optical fibres offers a high potential for miniaturisation of sensors [1]. For high spatial resolution measurements, the sensor chemistry has to be immobilised on the fibre tip, and the excitation and emission light has to be guided via the same fibre.