Bifunctional, Self-Tinting Smart Window Doubles As Rechargeable Battery

Researchers at Nanyang Technological University have developed a self-tinting smart window that brightens and darkens on its own and without an external power source. This smart window doubles as a rechargeable battery, requires no electricity, and can store enough energy to power low-power electronics, such as LEDs. Cool blue in daylight and clear at night, the tint-shifting window also reduces light penetration close to 50%.