Can you help us interpret the low-frequency range of the Raman spectrum of the tetrahedral amorphous carbon coating taC?

The figures (in the attachment) show the Raman spectrum of tetrahedral amorphous carbon coating (ta-C). Can you tell me how to interpret the features indicated by the arrows? Band 1, 2, 3 and 4? 5...

14 June 2024 1,524 3 View