This is a temporary tattoo that uses your own sweat to create an electric power. It uses from micro-sensors and chemical process to remove electrons from your lactic acid.
Research team from the University of San Diego.
It is an electricity generator based on human warm. The principle is based on the Peltier effect called thermo-electric effect. This energy is created when hot air moves between two conductive materials.
Research team of the Korean Advanced Institute of Science and Technology (source)
The concept is to use zinc oxide nano-wires that are sensitive enough to react to sound waves and produce electricity power by their movement. It's the piezoelectric effect. So, noises such as music, traffic noises, voices can create electricity.
The researchers in association with Nokia tested a prototype and were able to generate 5V with sounds of everyday life, enough to charge a phone.
Research team at Queen Mary University London
Piezoelectric film
In fact to my own knownledge, none of these solutions are currently on the market.
If we are able to evolve in the autonomy of our smartphone by the realization of a positive energy loop with our own body, we can easily imagine possible bridges of these technologies in other strategic sectors of our future ...
To be continued...
@hellofuture 🌍🌎🌏