Robust chirped photonic crystals created by controlled colloidal diffusion

Shin Hyun Kim, Woong Chan Jeong, Hyerim Hwang, Seung Man Yang

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


An on-chip spectrometer: Chirped 3D photonic crystals have been created using colloidal particle diffusion in a photocurable medium. The variations in the lattice constant created a color gradient that spanned the entire visible range. By combining the functionality of chirped photonic crystals with a complementary metal-oxide-semiconductor sensor array, a miniaturized spectrometer system is developed (see picture).

Original languageEnglish
Pages (from-to)11649-11653
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number49
StatePublished - 2 Dec 2011


  • colloidal crystals
  • diffusion
  • photonic crystals


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