Figure 3
From: Antibacterial cellulose paper made with silver-coated gold nanoparticles

SEM images of the different Au and Au-Ag NPs on cellulose paper. The bright spots in the images are NPs, specifically (a) 20 nm Au NPs, (b) 20 nm Au-Ag1000/1 NPs, (c) 20 nm Au-Ag100/1 NPs, (d) 15 nm Au NPs, (e) 15 nm Au-Ag1000/1 NPs, and (f) 15 nm Au-Ag100/1 NPs.