Method: Raman microspectroscopy
Alternative labels
RS
micro RS
Raman
micro RS
Raman
Description
Raman spectroscopy is a non-invasive and non-destructive analytical technique, which provides insights into the molecular composition and vibrational modes of matter. This method involves illuminating a sample with monochromatic visible light (with lasers). When light interacts with the molecules in an object, some of the light scatters inelastically, a phenomenon called Raman scattering. Unlike traditional spectroscopy, Raman scattering observes changes in energy levels of scattered photons. These energy shifts are related to the vibrational and rotational motions of molecules within the sample, offering a molecular fingerprint of the substance. These fingerprints need to be compared to a database, to determine the composition and structure of various substances.
Techniques
Micro-raman spectroscopy
Type
Analysis method
Version
1
Parameters
Type: Spectral Range
Unit: 1/cm
Value: 100-5000
Type: spectral resolution
Unit: 1/cm
Value: ca. 1
Type: lateral resolution
Unit: micrometre
Value: 0.25
Type: Axial resolution
Unit: micrometre
Value: 1
Type: Laser Power @ 532 nm
Unit: mW
Value: 0.01-40
Type: Laser power @ 633 nm
Unit: mW
Value: 0.01-50
Type: Laser Power @ 785 nm
Unit: mW
Value: 0.01-50
Type: working distance
Unit: mm
Value: 1-40
Type: spot size
Unit: micrometre
Value: 1
Type: Magnification
Unit: none
Value: 10x, 20x, 50x, 100x