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Keywords:

  • Chemical vapor deposition, atmospheric pressure;
  • Crystal defects;
  • Microspheres;
  • Photonic crystals

A straightforward synthetic route to produce colloidal photonic crystals containing dielectric planar defects of controlled thickness (see Figure) is presented. Allowed states that arise within the stop band as a result of this doping greatly modify the reflectance properties of the crystals, in good agreement with theoretical predictions.