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We have designed the outdoor air-cleaning pave block for human to protect the nature by themselves.
As people pass by stepping on the block, the piezoelectric element gathers the electric power, and when the energy is filled up, the air-cleaning function operates.
The LED in a shape of spreading wavelengths stirs up the interest and induces participation, at the same time it visually presents the level of energy accumulated.
Sejong, South Korea