[Raman Application] The number of layers of graphene

The number of layers of graphene can be determined by I2D/IG, the ratio of 2D-band over G-band.
graphene-g_2d-band.png
(MRI532S,ProTrusTech,Taiwan)

Combined with mappingfunction, we can focus on an area of sample and scan. The ratio of 2D-band over G-band can be displayed by different colors.

2d-of-g-mapping.jpg