Free-standing graphene monolayers in carbon-based composite obtained from SiC: Raman diagnostics

Diamond like carbon have D peak at range ~1300-1400 cm-1 and G peak 1500-1600 cm-1 in Raman spectra. you can recognized these, if you get the peak at this range.

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A. C. Ferrari and J. Robertson Interpretation of Raman spectra of disordered and amorphous carbon, PHYSICAL REVIEW B VOLUME 61, NUMBER 20, 2000, 14 095