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.
Atomic force microscopy images of all the modified surfaces. Notice that all PEG-silane and APTES modifications did not result in any appreciable roughening on the surface, while UV photoionization exhibits random nano-level patch grafting characteristics.
