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.
Video sequences of moving droplet containing (a) water or (b) 50% (by volume) glycerin in water, showing the effect of solution viscosity on the mobility of encased particles. The droplets were 50μL in volume and sealed with 0.2μL silicone oil. 40μg (viz. 0.8 μL suspension) superparamagnetic particles (0.5 μm diameter) were loaded. The velocity of the magnet was 1.5 mm s 1 in both cases.
