Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Transmission electron microscopy (TEM) image of PEGylated gold nanoparticles (a); TEM image of a single gold nanoparticle showing the presence of the polyethylene glycol (PEG) layer surrounding the nanoparticle (NP) (inset a). Statistical distribution of NPs sizes calculated from TEM images (b). UV-Vis absorption spectrum of the gold colloid (c); optical image of the gold colloid (inset c).
