It's also an antenna!

"Operating at gigahertz speeds, the technology could help further
miniaturize wireless communication devices like cell phones, which
exchange information at gigahertz frequencies."

http://www.sciencedaily.com/releases...0212195221.htm

"A team of Boston University physicists led by Assistant Professor
Pritiraj Mohanty developed the nanomechanical oscillator."

That's BU College of Engineering's Department of Aerospace and
Mechanical Engineering, not the MET department.