Interferential colour and fluorescence in nature

Photonic structures found in natural organisms consist in very sophisticated materials, developed during millions of years through natural evolution. When they interact with light, they display astonishing visual effects. Beetles' elytra as well as butterflies' wings are among the most striking examples. In addition, some organisms exhibit fluorescence emission from fluorophores naturally embedded within their biological tissues.

Investigating these optical effects occurring in nature allows to understand the physical mechanisms at their origins and the biological functions behind these effects. Moreover it provides inspiration for the design and development of novel photonic materials through a bioinspiration approach.

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