People have been using the powerful energy of water for thousands of years. Using the physical principles of hydroelectric power plants, a group of Chinese researchers from Fudan University has developed a tiny generator that can be installed inside large blood vessels of a person and generate electricity from the flow of blood.
In 2011, Swiss scientists have already developed tiny turbines that could theoretically be placed inside veins and generate small amounts of electricity. However, they had a serious drawback: as an artificial obstacle, microturbines could provoke the formation of blood clots.
The development by Chinese scientists is a new type of electrical device that generates electricity using an ordered array of carbon nanotubes wrapped around a polymer core. The device was named "fiber-like liquid nano-generator" - FFNG.
It is not yet clear how much energy it will be able to generate, however, according to its creators, the FFNG will have an energy conversion rate of about 20%. Scientists have already conducted successful experiments on frogs. In the future, FFNG may become a power source for medical devices implanted into the human body.