Nano inks could revolutionize the way we keep our cars cool. A team of researchers from the University of Tokyo have developed a new type of nano ink that passively regulates the temperature of cars and other vehicles. The ink is made from thermochromic nanoparticles that change color when exposed to heat. When the car is exposed to sunlight, the ink absorbs the heat and changes color, reducing the temperature inside the car and providing a more comfortable environment for the occupants. The nano ink could be used to coat the outside of a car, reducing the amount of energy needed to cool the interior. This could have a huge impact on energy consumption and carbon emissions from vehicles.

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source: Phys.org