Pads Use Paper Battery to Generate Power when Someone Walks Over Them

An interesting eco-friendly idea was proposed by designer 

Stephen Chan Wing Tak. He is the author of the 

Eco-Enegry Flooring System pads that feature a paper battery 

system used to collect energy that is generated when people

walk and run over the piezoelectric blocks.

To put it simple: the system is composed of blocks that are 

mounted on the floor and when someone steps on these blocks, 

energy is produced. 

Afterwards the collected power is used to light up LEDs.

Each pad is made of six layers, with the upper one beingwater

resistant and covered with ultrasonic welding to make it 

humidity-proof. The next layer features an OLED board that

can have all sorts of symbols, letters, numbers that can light up.

Then there's a sponge material that dispenses the force and 

pressure.The follow-up level includes the piezoelectric board featuring 

crystal boards to produce power. Below there's the paper battery

and the last layer is the one that touches the ground. The system

is easy to transport and use. There's no information about the cost 

of the system but if it's cost-friendly then we might as well call this 

invention perfect.

Source:
http://www.infoniac.com/hi-tech/pads-use-paper-battery-to-generate-power-when-someone-walks-over-them.html