<ul><li>Scientists at Nanyang Technological University (NTU) have developed color-changing materials called 2D halide perovskites.</li><li>By using an environmentally friendly method, the researchers were able to adjust the band gap of these materials, allowing for precise control over their color.</li><li>One of the perovskites was found to change color from orange to red when heated, and return to orange when cooled, showcasing its thermochromic switching behavior.</li><li>This discovery could have applications in smart technologies, such as coatings, inks, and optoelectronic devices like sensors, displays, and solar energy systems.</li></ul>

Scientists create color-changing materials for smart technologies

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