Sports shoes designed at the University of Wisconsin-Madison (USA) with a feature that makes them unique, they can generate energy when we walk with them.
To show a very visual example:
In theory it can generate between 10 and 20 watts in the form of heat when walking, these shoes want to take advantage of this energy. To do this, they placed a device called a Bubber on the sole of the shoes, which is made up of two plates with a conductive liquid in between. In the lower part, it has small holes that allow a gas to enter by forming bubbles, which grow inside, exploding inside the liquid, generating an electric charge as it moves.
The energy that can be produced with this system is still very low, but in future developments they believe that they will be able to generate enough energy to charge a mobile.
Its creator explains how it works:
More information: news.wisc.edu