Figure 7.
SEM image before and after aging. (a) CNT emitters before aging; (b) decreased CNT height (white arrow) after aging.
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.