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Non-close-packed photonic crystal of TiO2 hollow spheres: Fabrication and photonic bandgap calculation

Zhu Yong-Zheng Yin Ji-Qiu Qiu Ming-Hui

Non-close-packed photonic crystal of TiO2 hollow spheres: Fabrication and photonic bandgap calculation

Zhu Yong-Zheng, Yin Ji-Qiu, Qiu Ming-Hui
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  • Received Date:  09 January 2008
  • Accepted Date:  19 August 2008
  • Published Online:  05 June 2008

Non-close-packed photonic crystal of TiO2 hollow spheres: Fabrication and photonic bandgap calculation

  • 1. 

Abstract: We have fabricated the non-close-packed photonic crystals of SiO2 microspheres with the help of the modified vertical method, the thermal sintering technology and etching. The face-centered cubic photonic crystals of TiO2 hollow spheres connected by TiO2 cylindrical tubes have been fabricated using silica template. The structure of the non-close-packed opals was characterized by scanning electron microscopy. We performed photonic band-structure calculations of this structure by a plane wave expansion method. The calculations indicate that the photonic bandgaps at all points of the Brillouin zone in non-close-packed structure were opened except point W.

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