Schematics of the (a) quartz tube furnace used and (b) processes inside the tube furnace.
(a)–(c) Optical microscope (OM) images; (d)–(e) SEM images; (g)–(l) Raman spectra of the samples after annealing. (a), (d), (g), and (j) belong to the sample without catalyst; (b), (c), (e), (f), (h), (i), (k), and (l) are from the sample but from different regions as marked with “O” in (b) and (c).
(Color online) Comparison of carbon tubular structure formation (base-growth model) for (a) CVD and (b) SiC vacuum decomposition with catalyst (large hemispheres on the surface of SiC represent catalyst particles); (c) SEM micrograph of tubular structure grown by SiC vacuum decomposition with catalyst.
Article metrics loading...
Full text loading...