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.
Two-dimensional examples of fragmented oil droplets (white) in pores that are a few millimeters in size. The black color represents the brine phase. Droplets that appear to be in free suspension are in contact with the pore surface when viewed in 3D. (Scale bar, 1 mm.)
