A polymer-based functional pattern on one-dimensional photonic crystals for photon sorting of fluorescence radiation

被引：24

作者：

Ballarini, Mirko ^{[1
]}

Frascella, Francesca ^{[1
]}

De Leo, Natascia ^{[2
]}

Ricciardi, Serena ^{[1
]}

Rivolo, Paola ^{[1
]}

Mandracci, Pietro ^{[1
]}

Enrico, Emanuele ^{[2
]}

Giorgis, Fabrizio ^{[1
]}

Michelotti, Francesco ^{[3
]}

Descrovi, Emiliano ^{[1
]}

机构：

[1] Politecn Torino, Dept Appl Sci & Technol, I-10129 Turin, Italy

[2] Natl Inst Metrol Res, I-10135 Turin, Italy

[3] SAPIENZA Univ Roma, Dept Basic & Appl Sci Engn, I-00161 Rome, Italy

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 06期

关键词：

BLOCH SURFACE-WAVES; ENHANCED FLUORESCENCE; BINDING;

D O I：

10.1364/OE.20.006703

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work we introduce the use of a patterned polymer-based surface functionalization of a one-dimensional photonic crystal (1DPC) for controlling the emission direction of fluorescent proteins (ptA) via coupling to a set of two Bloch Surface Waves (BSW). Each BSW dispersion branch relates to a micrometric region on the patterned 1DPC, characterized by a well defined chemical characteristic. We report on the enhanced and spatially selective excitation of fluorescent ptA, and on the spatially-resolved detection of polarized emitted radiation coupled to specific BSW modes. As a result, we provide an optical multiplexing technique for the angular separation of fluorescence radiated from micrometric regions having different surface properties, even in the case the emitting labels are spectrally identical. This working principle can be advantageously extended to a multi-step nanometric relief structure for self-referencing biosensing or frequency-multiplexed fluorescence detection. (C) 2012 Optical Society of America

引用

页码：6703 / 6711

页数：9

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