By National Nanotechnology Center (NANOTEC)
It is a technique for measuring the vibrational characteristics of molecules. This technique is laser-activated to study the chemical bond and chemical distribution on the sample surface. There are three wavelengths of light that can be used to trigger Raman scattering: blue 473 nm, green 532 nm, and red 632.8 nm. The confocal Raman spectroscopy technique can be analyzed using the modes as follows: – Raman spectrum: measurement of Raman scattering occurring on the surface of the sample to be measured. The result is a Raman spectrum graph for further analysis. – Raman imaging: Measurement of the Raman spectrum by scanning the area to different points on the surface of the sample to be measured. The result is chemical mapping to determine the distribution of the substance to be measured. – confocal Raman spectroscopy: Measurement of Raman spectrum deep into the layers of the sample to be measured. It is suitable for samples with core-shell or multi-layer coating etc. – AFM related Raman mapping: Measurement of AFM and Raman measurements in the same location to study physical and chemical properties in the same location on the sample to be measured. confocal Raman spectroscopy can be measured either dry or wet/solid or powder. For example, carbon nanotubes, thin films, plastic sheets, natural rubber, synthetic rubber, various nanomaterials including cells and bacteria, etc.
