Inside Cover: Robust Chirped Photonic Crystals Created by Controlled Colloidal Diffusion (Angew. Chem. Int. Ed. 49/2011)

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Abstract

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An on-chip spectrometer has been developed using chirped 3D photonic crystals mounted on a complementary metal-oxide-semiconductor sensor array. In their Communication on page 11 649 ff., S.-H. Kim, S.-M. Yang, and co-workers show that colloidal diffusion in a photocurable medium created gradual variations in the lattice constant of the colloidal crystals. The variations in the lattice constant resulted in a color gradient that spanned the entire visible range.

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