Self-powered camera invented by US scientists

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Scientists at Columbia University in New York have invented a camera that can produce video indefinitely by harvesting energy from the light that falls on the sensor.

Currently the device can only produce grainy black and white 30x40 pixel images at a rate of one frame per second, but the team behind the project believes it could lead to a fully self-powered solid-state sensor with a much higher pixel count and frame rate.

The scientists have produced a film to demonstrate the camera's capabilities...

Click here to find out more about the project.