Most important factor in the world of materials science is the identification of different materials and the determination of what molecules and atoms they are made of. The Raman spectroscopy is a technique that uses the inelastic scattering occurring due to the interaction of a used laser with the sample and the therefore resulting changes in the vibrational, rotational, and other low-frequency modes in the system.

The setup that we are using is the alpha 300 RA. This setup includes two lasers operating at different exciting wavelengths: 532 nm and 633 nm. It is possible to investigate metal oxides, polymers or biological samples (e.g. ZnO, PTU, Lactose or Tetracain) as well as water based solutions in a non-destructive way. Depending on the sample itself area, depth or single spectrum scans can be performed with a resolution of λ/2. The limitations for the sample are a film thickness of around 100 nm and a sample size of approximately 1 µm².

Images of Chloramphenicol (area scan, spectrum, microscopic)

Images of Nipasol (depth scan, spectrum)

Images of Lactose, Lactose+SBS, SBS

For more information contact:

Dr.-Ing. Haoyi Qiu

Email