Using the latest high-resolution microscopy, the researchers were able to trace the developmental stages of butterfly scales, trace their formation from caterpillar to butterfly, and figure out how they become so bright.
Their work showed that actin, a protein that is part of butterfly scales, controls the complex arrangement of colorful structures.
In a study at the University of Sheffield and the Central Laser Centre, the scientists noticed that the multi-coloured scales have much denser actin beams, creating more reflective ridges than the dull-coloured scales.
“Butterfly scale nanostructures are a powerful way to produce long-lasting, vibrant colors that don’t fade or discolor when exposed to the sun’s ultraviolet rays. Museums around the world have direct evidence of this,” he added.
By studying the mechanisms of butterfly wing coloration, the researchers hope to gain insight into broader areas of cell structure formation, including potential applications in sensing and diagnostics that could be important for a range of technologies, including medicine.
The research also opens up opportunities for the development of innovative technologies inspired by nature’s own creations.
