title: Bio-inspired photonic-crystal microchip for fluorescent ultratrace detection.
abstract: Ultratrace detection attracts great interest because it is still a challenge to the early diagnosis and drug testing. Enriching the targets from highly diluted solutions to the sensitive area is a promising method. Inspired by the fog-collecting structure on Stenocara beetle's back, a photonic-crystal (PC) microchip with hydrophilic-hydrophobic micropattern was fabricated by inkjet printing. This device was used to realize high-sensitive ultratrace detection of fluorescence analytes and fluorophore-based assays. Coupled with the fluorescence enhancement effect of a PC, detection down to 10(-16) mol L(-1) was achieved. This design can be combined with biophotonic devices for the detection of drugs, diseases, and pollutions of the ecosystem.
authors.affiliation: Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing (P. R. China) http://ylsong.iccas.ac.cn; University of Chinese Academy of Sciences, Beijing (P. R. China).
authors.forename: Jue
authors.initials: J
authors.lastname: Hou
authors.forename: Huacheng
authors.initials: H
authors.lastname: Zhang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yang
authors.forename: Mingzhu
authors.initials: M
authors.lastname: Li
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Song
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
mesh_terms: D003952:Diagnostic Imaging / Q000295:instrumentation*; D006801:Humans; D008856:Microscopy, Fluorescence / Q000295:instrumentation*; D017785:Photons
keywords: cocaine; enrichment; fluorescence enhancement; photonic crystals; ultratrace detection