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.
Graphene grids
(A) Example of a grid covered with residual crystals.
(B) Example of a grid covered with residual long fibers.
(C) Example of a grid which had been washed with ethanol after hydrophilization. Particles have low contrast and are not suitable for collection.
