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.
SERS spectra of GCF samples collected before (T0), after 2 (T1), after 7 (T2), and 14 days (T3) the beginning of the OTM. For facilitating the visual inspection, the spectra are arbitrarily shifted along the vertical axis. (Reprinted with permission from d’Apuzzo et al., 2017).
