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Nanomaterials and Spectroscopy Group

Nanomaterials and Spectroscopy Group

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The NMS Raman Lab

Raman Spectroscopy is the inelastic scattering of photons by phonons. It is a simple, fast, non-destructive characterisation tool widely used in basic and applied research in natural sciences and industries.


The NMS Raman lab comprises an RM1000 Renishaw system, equipped with a Leica Microscope with 5X, 20X, 50X, 50X Ultra long working distance, 100X and 250X objectives, an XYZ scanning stage, a 514.5 nm Ar-ion Laser, a 633 He-Ne Laser, a 785 nm Diode Laser and a I70C-Spectrum-PV Coherent Ar-Ion laser at 752.5, 647.1 568.2, 530.9, 520.8, 514.5, 488, 476.5 and 457.9 nm. Three gratings are available (1800, 1200 and 600 l/mm). The extended scanning option permits to measure photoluminescence spectra. The system is equipped with 2 sets of holographic supernotch filters for 633 and 514.5 nm excitation, which cut at 50 cm-1. We have sets of polarisers/analysers for each wavelength. We have a Hot-cold Linkam stage (-196/+600oC). An electrochemical cell allowing in-situ Raman measurements is available. A PI piezo scanning stage with 200x200x20 mm range and sub 3nm resolution is available for advanced Raman mapping.


We have access to other wavelengths through collaborations with the University of Leeds (244 and 229 nm), University of Bristol (325 nm) and Politecnico di Milano (532 nm and 1064 nm).


Future developments include the coupling of the system with an AFM for combined AFM-Raman measurements, the installation of a SNOM system, the availability of a He cryostat for measurements down to 4 K, the acquisition of a NEXT filter for (low frequency) measurements at different wavelengths and a InGaAs detector for low energy PL measurements.


The NMS Raman Lab is a accessible for all NMS group members. Our facilities are also available, by arrangement, for other researchers and for industries to analyse any materials of interest. Consulting on Raman spectroscopy applications is also offered.