The vibrant blues of a morpho butterfly's wings, the iridescent hues of an opal, and the ever-changing colors of a chameleon's skin all share a common origin: structural color. Unlike pigments that absorb and reflect specific wavelengths of light, structural colors arise from the intricate nanoscale architecture of materials. This phenomenon, which has evolved in nature over millions of years, has long captivated scientists and engineers seeking to replicate and harness its potential.
