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.
Tapping-mode AFM, height profile, and optical images of A,C) circular holes and B,D) line trenches generated using the negative feature polymer-based etching methodology. The insets in (A) and (B) show the zoomed-in AFM images of the negative nanostructures.
