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.
Scanning electron microscopy images of metal microparticles deposited on a glass coverslip: Fe (a), Co (b), and Ni (c) and transmission electron microscopy images of metal nanoparticles deposited on formvar carbon-coated grids: Fe (d), Co (e), and Ni (f). Certain heterogeneity in the size and shape is observed for all the particles.
