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Keywords:

  • Lithography, photo-;
  • Photonic crystals, collodial;
  • Self-assembly;
  • Waveguides
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Linear extrinsic defects can be embedded inside the lattice of a silica colloidal photonic-crystal film via a directed self-assembly strategy involving a combination of top–down photolithography and bottom–up colloidal assembly. High-spatial-resolution scanning micro-optical spectroscopy proves to be an effective means of characterizing the photonic crystal properties of the buried defects (see Figure) within the film.