Imagine Sunglasses that Change Color Instantly
Polymers that use electrical current to change color now have a broader palette for potential uses, such as in sunglasses and window-tinting.
By developing electrochromic polymer materials in a range of primary and secondary colors and combining them in specific blends, the researchers have covered the color spectrum.
The materials could be used to make sunglasses that change from tinted to clear in a matter of seconds, at the press of a button. Even greeting cards could change color through the application of low-voltage electrical current.