中国物理B ›› 2010, Vol. 19 ›› Issue (2): 24213-024213.doi: 10.1088/1674-1056/19/2/024213

• • 上一篇    下一篇

Photonic band structure of three-dimensional colloidal crystals with field-induced lattice structure transformation

张利锋, 黄吉平   

  1. Department of Physics and Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China
  • 收稿日期:2009-03-14 修回日期:2009-04-01 出版日期:2010-02-15 发布日期:2010-02-15
  • 基金资助:
    Project supported by the National Key Basic Research Special Fund (Grant No.~2006CB921706), and the National Natural Science Foundation of China (Grant Nos. 10604014 and 10874025).

Photonic band structure of three-dimensional colloidal crystals with field-induced lattice structure transformation

Zhang Li-Feng(张利锋) and Huang Ji-Ping(黄吉平)   

  1. Department of Physics and Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China
  • Received:2009-03-14 Revised:2009-04-01 Online:2010-02-15 Published:2010-02-15
  • Supported by:
    Project supported by the National Key Basic Research Special Fund (Grant No. 2006CB921706), and the National Natural Science Foundation of China (Grant Nos. 10604014 and 10874025).

摘要: By utilizing the electrorheological effect, three-dimensional colloidal crystals can be produced, whose lattice structure can be changed from the body-centered-tetragonal lattice to other lattices under the application of electric fields. This paper calculates photonic band structures of such crystals with lattice structure transformation, and demonstrates the existence of complete band gaps for some intermediate lattices. Thus, it becomes possible to use the electrorheological effect to achieve photonic crystals with desired photonic gap properties resulting from tunable structures.

Abstract: By utilizing the electrorheological effect, three-dimensional colloidal crystals can be produced, whose lattice structure can be changed from the body-centered-tetragonal lattice to other lattices under the application of electric fields. This paper calculates photonic band structures of such crystals with lattice structure transformation, and demonstrates the existence of complete band gaps for some intermediate lattices. Thus, it becomes possible to use the electrorheological effect to achieve photonic crystals with desired photonic gap properties resulting from tunable structures.

Key words: photonic crystals, electrorheological effects, band gaps

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
82.70.Dd (Colloids) 83.80.Gv (Electro- and magnetorheological fluids)