FIGURE 1.
Schematic representation of surface contact angles on surfaces with different polarity. The shape of the droplet determines the surface contact angle α of a polar solution on materials with different polarity.
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.