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Fiber Spectroscopic Sensors

Scientific Profile

The research of the group „Fiber Spectroscopic Sensing” focuses on the development of miniaturized, fiber- and cavity-based Raman sensors and their interdisciplinary application in environmental, pharmaceutical and biomedical areas. 
The team exploits the high chemical selectivity of Raman spectroscopy for the identification and quantification of biogenic gases, drugs and biomolecules in complex samples. The development of novel micro-structured hollow-core fibers (e.g. for guidance in the deep-UV) and optical cavities provides high signal enhancements. Thus, monitoring minimal sample concentrations onsite in small sample volumes with high selectivity and sensitivity is achieved. 
The research regarding tailor-made optical sensors is closely connected to the interdisciplinary application in various environmental and life science topics. This interdisciplinary research is done in close cooperation with partners from CRC AquaDiva and the university hospital.

Research Topics

  • Fiber enhanced Raman spectroscopy (FERS)
  • Design of novel hollow core fiber for ultraviolet guidance
  • Cavity enhanced Ramanspectroscopy (CERS)
  • Raman spectroscopic gas sensing
  • Fiber array based Raman imaging 

Addressed application fields

Environmental science

  • Characterization of metabolism changes of plants due to climate relevant environmental changes
  • Analysis of microbial gas exchange in mesocosms and of soil gas depth profiles onsite
  • Research regarding element cycles (e.g. nitrogen cycle – denitrification, nitrogen fixation)
  • Application of stable isotopes (e.g. Aanalysis of microbial degradation of pollutants in soil)

Breath analysis

  • Analysis of gaseous and volatile disease markers in breath for non-invasive early stage disease diagnosis

Pharmaceutical analytics

  • Highly sensitive and selective analysis of pharmaceutical drugs in body fluids
  • Analysis of molecular interactions between active agents and their biological targets, with focus on antimalarial drugs
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