Photonic band structure of three-dimensional colloidal crystals with field-induced lattice structure transformation |
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Authors: | Zhang Li-Feng and Huang Ji-Ping |
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Institution: | Department of Physics and Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China |
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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. |
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Keywords: | photonic crystals electrorheological effects band
gaps |
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