Self-tinting “breathing” window doubles as a transparent battery

Scientists at the Nanyang Technological University (NTU) in Singapore have developed a smart window that is able to tint itself blue, partially blocking incoming light, without the need for an external power source. The device also functions as a small transparent battery that recharges on its own simply by interacting with the oxygen in its surroundings. Indoor cooling can make up a sizeable percentage of ...

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