Porous-Silicon/Polymer Nanocomposite Photonic Crystals Formed by Microdroplet Patterning


  • This project has been funded in part with Federal funds from the National Cancer Institute, National Institutes of Health, under Contract No. N01-CO-37117 and from the Air Force Office of Scientific Research under Grant No. F49620-02-1-0288. The authors thank Evelyn York of the Scripps Institution of Oceanography for assistance with the electron microscopy and Prof. Gordon Miskelly of the University of Auckland, New Zealand for helpful discussions. Supporting Information is available online from Wiley InterScience or from the author.


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A simple method to construct composite microparticles consisting of porous-silicon one-dimensional photonic crystals infused with a polymer is described. The particles (see Figure) are generated by spray-coating a fine mist of polymer solution onto a photonic crystal layer and then removing the uncoated material by chemical dissolution.