Fig. 4. (Color online) (a) RAMAN spectroscopy of the synthesized Ni–graphite CSNPs according to the C₂H₂ flow rate. (b) Ratio of the D and G band intensities (I_D/I_G) and (c) that of the 2D and G bands (I_2D/I_G).

New Phys.: Sae Mulli 2022;72:1~7 https://doi.org/10.3938/NPSM.72.1

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