Abstract
We introduce artificial periodic defects with required size in colloidal photonic crystals by a simple and inexpensive photolithography. The morphology of colloidal photonic crystals with defects is observed by field emission scanning electron microscope (SEM) and optical properties by UV-VIS spectra. We find that the periodic photoresist strips will cause a blue shift and the shift value depends on the the size of periodic photoresist strips.
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