title: Fluorescence enhancement by heterostructure colloidal photonic crystals with dual stopbands.
abstract: 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.
authors.affiliation: Key Laboratory of Micro-nano Measurement-Manipulation and Physics, Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing, China.
authors.forename: Heng
authors.initials: H
authors.lastname: Li
authors.forename: Jingxia
authors.initials: J
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Song
authors.forename: Rongming
authors.initials: R
authors.lastname: Wang
mesh_terms: D003102:Colloids / Q000737:chemistry; D005453:Fluorescence; D050866:Liquid Crystals / Q000737:chemistry* / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D015335:Molecular Probes / Q000737:chemistry; D015394:Molecular Structure; D017785:Photons; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D003102:Colloids; D015335:Molecular Probes