Figure 1.

a TEM images of Au nanoparticles; b size distribution obtained from a portion of a TEM image of Au nanoparticles, which can be described using a log-normal distribution function, as indicated by the solid curve; c electron diffraction patterns of a selected area 3.7(9) nm Au nanoparticles, revealing the cubic structure of the Au nanoparticles

Shih and Wu Nanoscale Research Letters 2009 5:25-30   doi:10.1007/s11671-009-9438-z