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J Colloid Interface Sci. 2011 Apr 1;356(1):63-8. doi: 10.1016/j.jcis.2010.12.078. Epub 2011 Jan 3.

Fluorescence enhancement by heterostructure colloidal photonic crystals with dual stopbands.

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  • 1Key Laboratory of Micro-nano Measurement-Manipulation and Physics, Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing, China.


In this work, we present a facile approach on the remarkable enhancement of fluorescent signal by heterostructure colloidal photonic crystals (PCs) with dual stopbands. The intensity of fluorescent medium on heterostructure PCs with dual stopbands overlapping the excitation wavelength and the emission wavelength of fluorescent medium can be up to 162-fold enhancement in comparison to that on the control sample. Otherwise, parameters of heterostructure PC films such as film thickness or stacking order have important effects on fluorescent signals. The method will be of great significance for developing the highly sensitive fluorescence-based detection.

Copyright © 2010 Elsevier Inc. All rights reserved.

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