Figure 9.
Photographs of tree-like structures formed: in microwave discharge in liquid engine oil (a); and in liquid residues of heavy petroleum feedstock (b).
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.