SEM images of the carbon microcoils: (a) as-grown and (b) stretched.
SEM images of the carbon microcoils: (a) before graphitization and (b) after graphitization.
(a) Raman spectra and [(b)–(c)] curve fitting of the Raman spectra of the carbon microcoils (b) before and(c) after graphitization. Curves 1 and 2 are for the as-grown and thermally treated microcoils, respectively.
XRD spectra of the carbon microcoils (a) before and (b) after graphitization.
TGA curves of the carbon microcoils before and after graphitization treatment.
Schematic of structural transformations in carbon microcoils in the graphitization process.
Raman characteristics of the as-grown and graphitized carbon microcoils.
Diffraction characteristics of the carbon microcoils.
Crystallite size in the -direction and degree of graphitization of the as-grown and graphitized carbon microcoils.
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