Tailoring Air Defects in Self-Assembled Photonic Bandgap Crystals


  • This work was supported by the National Science Foundation under Award Number CTS-0332484 and in part by the MRSEC Program of the National Science Foundation under Award Number DMR-0212302. Y. J. acknowledges a partial research fellowship from the Industrial Partnership for Research in Interfacial and Materials Engineering at the University of Minnesota. The authors are grateful for microscopy assistance from Jerry Sedgewick.


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Introducing structural defects into photonic crystals is a challenge that must be met for many photonic applications. Here, a method is demonstrated to tailor the local structure of silicon inverse opals, prepared from the self-assembly of colloidal microspheres, by combining multiphoton photopolymerization and silsesquioxanes (see Figure).