Figure 2.

SEM images of the colloidal carbon spheres synthesized by the two-step approach:a167 nm,b171 nm,c183 nm,d202 nm,e400 nm in diameter,fElliptic and triquetrous particles, andgsize distributions of CCS corresponding to (ae)

Chen et al. Nanoscale Research Letters 2009 4:971-976   doi:10.1007/s11671-009-9343-5