Figure 3.
SEM micrographs of dual-scale structures obtained using a screen-to-screen configuration with electrically insulated needle. (a), (b), (c), 4 layers structure; (d), (e), (f) 12 layers structure.
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.