Figure 1.

TEM images for the GNPs synthesized in the current study. GNPs with diameters of 3, 5, 8, 12, 17, 37, 50, and 100 nm were examined under an electron microscope. Scale bars are 20 nm for images of 3, 5, 8, 12, and 17 nm GNPs. Scale bars are 50 nm for images of 37, 50, and 100 nm GNPs

Chen et al. Nanoscale Research Letters 2009 4:858-864   doi:10.1007/s11671-009-9334-6