Figure 3
From: Highly flexible and robust N-doped SiC nanoneedle field emitters

(a1–a3) Typical scanning electron microscopy (SEM) images of the SiC nanoneedle in sample S2-1 under different magnifications. (b1–b3) SEM images of the SiC nanoneedle of sample S3-1 under different magnifications. (c) Summary of the SiC nanostructures, that is, nanoneedles and nanowires, as a function of gas mixture and cooling rate applied during the synthesis.