Jet delivery system for Raman scattering on bio-inorganic compounds

We present a micro-jet sample delivery system for Raman measurements. Compared to cuvette measurements, the observed Raman signal is enhanced by more than one order of magnitude and does not contain signal distortions from the liquid-glass interface. Furthermore, the signal stability of repeated mea...

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Bibliographic Details
Published in:Applied physics letters 2016-11, Vol.109 (21)
Main Authors: Wetzel, A., Biebl, F., Beyerlein, K. R., Stanek, J., Gumprecht, L., Hoffmann, A., Herres-Pawlis, S., Bajt, S., Chapman, H. N., Grimm-Lebsanft, B., Rukser, D., Rübhausen, M.
Format: Article
Language:English
Subjects:
Applied physics
Control equipment
Inorganic compounds
Interface stability
Laser beams
Low concentrations
Raman spectra
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Summary:We present a micro-jet sample delivery system for Raman measurements. Compared to cuvette measurements, the observed Raman signal is enhanced by more than one order of magnitude and does not contain signal distortions from the liquid-glass interface. Furthermore, the signal stability of repeated measurements is enhanced due to reduced sample damage effects by constantly replenishing the sample. This allows the study of sensitive samples that can only be produced in low concentrations. Our setup consists of a controlled sample environment that can be either under vacuum or an exchange gas, which allows the study of samples that are unstable in air. Finally, by matching the effective source point of the Raman instrument with the diameter of the jet, controlled experiments using laser beams of different wavelengths are possible. We see future applications of our setup for resonance Raman and time-resolved Raman measurements of bioinorganic samples.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4967476