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.
Representative TEM images of carbon dots in the as-produced sample (upper) and in the most fluorescent fraction (lower, and also the attached high-resolution images of two dots), with the corresponding statistical size analysis results based on multiple images.
