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A Photonic Crystal Explanation For a Butterfly Wing Color

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Abstract

We have theoretically explained the origin of the green/yellow colour emitted by the wings of the Teinopalpus Imperialis butterfly. In particular, starting from experimental observations of its structure revealing a periodic configuration, we have built a model to analyze both the photonic band structure and the transmission spectrum. The results well explain why the wings of this kind of butterfly reflect light in the green/yellow region of the optical spectrum.

© 2015 Optical Society of America

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