Figure 8.
Color changes detected by the cellulose nanofibrils hydrogel indicator. The figure above was adapted with permission from the cited reference [131].
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.