Tiny generator runs off of vibrations

Scientists at the University of Southampton, UK have created a tiny generator that can harvest electricity off of minuscule vibrations from its environment. It doesn't generate a lot of power, but it does generate enough to power sensors installed on heavy machinery and equipment. Eliminating the need to hook those devices up to a battery.
The scientists hope to be able to miniaturize it further. Allowing it to be placed inside of a human to power devices such as pacemakers. Pacemakers currently have to have their batteries changed periodically. A process that involves surgery. With a generator like this, all of the power needed for the pacemaker could be generated by the beating of the individuals heart.
Between generators powered by vibrations and generators powered by glucose in human blood, we are well on our way to being able to power all the cybernetic devices we might ever need. Using nothing but our own bodies.

Via BBC News: Good vibes power tiny generator