Fig. 4.
(a) The critical velocity vc is determined by moving a capsule on a circular path while gradually increasing the velocity. (b)–(d) A capsule with a diameter of 5.2 µm is moved with a velocity of 3.5 µm/s.
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.