Structural coloring with low-index polymer meta-pixels by multipole-based design

Structural color arises from lightwave’s interaction with physical structures. It is gathering popularity rapidly for its durability and convenience. Conventional structural coloring schemes, however, rely heavily on high-index, nanoscale structures that are difficult and costly to realize. We demonstrate a new, multipole-based design which enables facilely tunable structural coloring in microscale meta-pixels made of low-index, soft lithography-compatible polymers, and verify the design with experiments and simulations.