Raman-on-chip device and detection fibres with fibre Bragg grating for analysis of solutions and particles
2012; Royal Society of Chemistry; Volume: 13; Issue: 6 Linguagem: Inglês
10.1039/c2lc41169e
ISSN1473-0197
AutoresSebastian Dochow, Martin Becker, Ron Spittel, Claudia Beleites, Sarmiza Elena Stanca, Ines Latka, Kay Schuster, Jens Kobelke, Sonja Unger, Thomas Henkel, Günter Mayer, Jens Albert, Manfred Rothhardt, Christoph Krafft, Jürgen Popp,
Tópico(s)Photonic and Optical Devices
ResumoAn all-fibre based Raman-on-chip setup is introduced which enables analysis of solutions and trapped particles without microscopes or objectives. Beside the novel quartz microfluidic chip, innovative multi-core single-mode fibres with integrated fibre Bragg gratings are used for detection. The limit of quantitation is 7.5 mM for urea and 2.5 mM for nicotine with linear Raman spectroscopy. This is an improvement of more than two orders of magnitude compared with previous fibre-based microfluidic Raman detection schemes. Furthermore, our device was combined with optical traps to collect Raman-on-chip spectra of spherical polymer beads.
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