Building Tunable Planar Defects into Photonic Crystals Using Polyelectrolyte Multilayers


  • G. A. O. is Government of Canada Research Chair in Materials Chemistry. He is indebted to the Natural Sciences and Engineering Research Council of Canada for support of this research. H. M. thanks the Spanish Ministry of Science and Technology for the funding provided under grant MAT2003-04993-C04-01, as well as Fundación Ramón Areces. A. M. thanks Universidad Politecnica de Valencia for a scholarship. N. T. is grateful for financial support of his research in the form of an Ontario Graduate Scholarship. A. A. thanks NSERC for a post-graduate scholarship. A. M. acknowledges UPV for a post-graduate scholarship. N. T. and A. C. A. contributed equally to this manuscript.


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Chemically active polyelectrolyte planar defects (see Figure) are embedded into colloidal photonic crystals using both direct-coating and transfer-printing techniques. These planar defects introduce a transmitting state within the photonic stop band, which is dynamically adjusted with nanometer precision by pressure-controlled selective vapor sorption.