This time Shadows produce the Power not Light!

A new device ‘Shadow-effect energy generator’ leverages the contrast between the bright spots and shade to generate power that can charge small electronics.

With this device, we can harvest the energy anywhere on the planet. Swee Ching Tan, a materials scientist at the National University of Singapore, teamed up with his crew to create a device by placing a super thin coating of gold on silicon, a regular solar cell material, gold layer produces an electric current when part of the device lies in shadow.

The devices can also operate as sensors. When a remote-controlled toy car passed by, its shadow fell on a generator, creating the electricity to light up an LED. Read more about this story on

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