Raman Spectroscopy
DuoScan™ Application Examples
Example 1 – Pharmaceutical Tablet
In this example a 12.5 mm by 12.5 mm pharmaceutical tablet is analysed using a DuoScan™ macro-pixel for fast large area mapping – this ensures that the entire surface area of the tablet is analysed, without ‘stepping over’ any small features. Subsequently high resolution point-by-point mapping using the DuoScan™ piezo controlled mirrors allows a detailed image of microscopic features to be visualised.
Example 2 – Carbon Nanotubes
Isolated SWCNTs aligned on a Silicon sample. The colors correspond to the integrated intensity of the Si band (red) and of the respective G bands of the CNTs (green and blue).
DuoScan™ was used in macro-mapping mode to find the isolated CNTs. A high-definition image of the CNT was then obtained with DuoScan™ in step-by-step micro-mapping mode. The apparent width of the CNT is a convolution of the tube diameter with the laser spot size.
Sample courtesy of Dr Kalbac, Heyrovský Institute, Prague, Czech Republic
Other applications
- Large area component mapping (contaminant screening, survey scans, etc.)
- Chemical imaging at sub-micron scale
- Raman analysis and imaging of photosensitive biological samples
- Mapping on large and heavy samples that cannot be moved easily
- Prevention of photodegradation of organic materials when working with UV excitation
Technical Notes
RA-TN01 - Introduction to Raman Imaging
RA-TN04 - DuoScan Imaging
