Look ma, no hands: Engineers invent a magnetic fluid pump with no moving parts

Look ma, no hands: Engineers invent a magnetic fluid pump with no moving parts: The ferrohydrodynamic pump method works when electrodes wound around a pipe force magnetic nanoparticles within the ferrofluids to rotate at varying speeds.  Those particles closest to the electrodes spin faster, and it is this spatial variation in rotation speed that propels the ferrofluid forward. "We don't rely on any other material; no magnets, nothing moving but the ferrofluid that we're pumping," Koser says.