Figure 2
From: Fabrication of Ordered Mullite Nanowhisker Array with Surface Enhanced Raman Scattering Effect
SEM micrographs of the obtained samples.
(a)–(c) were calcined at 900°C for 1 h using different substrates ((a) quartz, (b) corundum, (c) mica). (d)–(f) were calcined at different temperature for 1 h using mica as substrate((d) 800°C, (e) 900°C, (f) 1000°C). (g)–(i) were calcined at 900°C for different time using mica as substrate((d) 1 h, (e) 3 h, (f) 5 h).
