FIGURE 13.
The translocation speed of the particle as a function of the surface charge density on the particle (upper) and as a function of 
(lower). All the conditions are the same as in Fig. 12.
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.