Figure 3.
SEM image for P-Z5(dry-free) [(a): surface, (b): cross-section] and P-Z5(Dried) [(c): surface, (d): cross-section].
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.