Table 1 Dependence of ID and ID/IG as observed in the Raman spectra, on the incident laser irradiation power density

From: Evaluating the thermal damage resistance of graphene/carbon nanotube hybrid composite coatings

   Irradiance, KW. cm−2
Specimen   0 0.5 2 12
CNT-10 ID/IG 1.04 1.09 1.13 1.12
  FWHM D-Peak, cm−1 94.31 83.53 93.46 68.49
  FWHM G-Peak, cm−1 60.62 60.18 62.16 60.89
CNT-25 ID/IG 1.08 1.16 1.23 1.36
  FWHM D-Peak, cm−1 67.26 76.52 62.42 58.64
  FWHM G-Peak, cm−1 55.09 59.72 62.51 58.58
CNT-50 ID/IG 1.11 1.16 1.29 1.33
  FWHM D-Peak, cm−1 74.33 59.5 54.61 59.43
  FWHM G-Peak, cm−1 61.28 61.38 57.31 60.34
CNT-75 ID/IG 1.15 1.26 1.37 NA
  FWHM D-Peak, cm−1 67.97 74.23 63.32 NA
  FWHM G-Peak, cm−1 59.67 60.44 58.5 NA