Bloch surface waves-controlled fluorescence emission: Coupling into nanometer-sized polymeric waveguides

Ballarini, Mirko; Frascella, Francesca; Enrico, E.; Mandracci, Pietro; Leo, Natascia De; Michelotti, Francesco; Giorgis, Fabrizio; Descrovi, Emiliano

doi:10.1063/1.3684272

Cited by 44 publications

(38 citation statements)

References 16 publications

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“…40-42 Recently, Angelini et al have fabricated grating structures on 1DPCs, in analogy to plasmonic bull’s–eye structures, to obtain more control over emission directionality. 43 It is expected that future methodologies will take advantage of 1DPC–assisted directional and wavelength–resolved emission for developing novel near–field fluorescence techniques.…”

Section: Dielectric Substrates: 1-dimensional Photonic Crystals (1dpcs)mentioning

confidence: 99%

Directing Fluorescence with Plasmonic and Photonic Structures

2015

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Fluorescence technology pervades all areas of chemical and biological sciences. In recent years, it is being realized that traditional fluorescence can be enriched in many ways by harnessing the power of plasmonic or photonic structures that have remarkable abilities to mold the flow of optical energy. Conventional fluorescence is omnidirectional in nature, which makes it difficult to capture the entire emission. Suitably designed emission directivity can improve collection efficiency and is desirable for many fluorescence-based applications like sensing, imaging, single molecule spectroscopy, and optical communication. By incorporating fluorophores in plasmonic or photonic substrates, it is possible to tailor the optical environment surrounding the fluorophores and to modify the spatial distribution of emission. This promising approach works on the principle of near-field interaction of fluorescence with spectrally overlapping optical modes present in the substrates.In this Account, we present our studies on directional emission with different kinds of planar metallic, dielectric, and hybrid structures. In metal−dielectric substrates, the coupling of fluorescence with surface plasmons leads to directional surfaceplasmon-coupled emission with characteristic dispersion and polarization properties. In one-dimensional photonic crystals (1DPC), fluorophores can interact with Bloch surface waves, giving rise to sharply directional Bloch surface wave-coupled emission. The interaction of fluorescence with Fabry−Peŕot-like modes in metal−dielectric−metal substrates and with Tamm states in plasmonic−photonic hybrid substrates provides beaming emission normal to the substrate surface. These interesting features are explained in the context of reflectivity dispersion diagrams, which provide a complete picture of the mode profiles and the corresponding coupled emission patterns. Other than planar substrates, specially fabricated plasmonic nanoantennas also have tremendous potential in controlling and steering fluorescence beams. Some representative studies by other research groups with various nanoantenna structures are described. While there are complexities to near-field interactions of fluorescence with plasmonic and photonic structures, there are also many exciting possibilities. The routing of each emission wavelength along a specific direction with a given angular width and polarization will allow spatial and spectral multiplexing. Directional emission close to surface normal will be particularly useful for microscopy and array-based studies. Application-specific angular emission patterns can be obtained by varying the design parameters of the plasmonic/photonic substrates in a flexible manner. We anticipate that the ability to control the flow of emitted light in the nanoscale will lead to the development of a new generation of fluorescence-based assays, instrumentation, portable diagnostics, and emissive devices.

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Section: Dielectric Substrates: 1-dimensional Photonic Crystals (1dpcs)mentioning

confidence: 99%

Directing Fluorescence with Plasmonic and Photonic Structures

2015

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“…[31] The manipulation of BSW [33,42] on a surface has been demonstrated. For example, a planar lens was implemented using a shaped polymer layer on a 12-layer dielectric multilayer operating at a wavelength of 1500 nm.…”

Section: Bsw For Planar Optical Circuitsmentioning

confidence: 99%

Bloch surface wave structures for high sensitivity detection and compact waveguiding

Khan

Corbett

2016

Science and Technology of Advanced Materials

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Resonant propagating waves created on the surface of a dielectric multilayer stack, called Bloch surface waves (BSW), can be designed for high sensitivity monitoring of the adjacent refractive index as an alternative platform to the metal-based surface plasmon resonance (SPR) sensing. The resonant wavelength and polarization can be designed by engineering of the dielectric layers unlike the fixed resonance of SPR, while the wide bandwidth low loss of dielectrics permits sharper resonances, longer propagation lengths and thus their use in waveguiding devices. The transparency of the dielectrics allows the excitation and monitoring of surface-bound fluorescent molecules. We review the recent developments in this technology. We show the advantages that can be obtained by using high index contrast layered structures. Operating at 1550 nm wavelengths will allow the BSW sensors to be implemented in the silicon photonics platform where active waveguiding can be used in the realization of compact planar integrated circuits for multi-parameter sensing.

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“…BSW have also demonstrated their potential in fluorescence enhancement [7][8][9] , surface enhanced Raman scattering 10,11 , and long range guided propagation of surface waves 12,13 .…”

Section: Introductionmentioning

confidence: 98%

Exploiting the phase properties of Bloch surface waves on photonic crystals for efficient optical sensing

Sinibaldi

Rizzo

Anopchenko³

et al. 2014

SPIE Proceedings

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Optical sensors exploiting Bloch surface waves at the truncation edge of one dimensional photonic crystals are used here as a valid alternative to surface plasmon resonance operating in the Kretschmann-Raether configuration, and commonly adopted for label-free optical biosensing. In order to reduce the Bloch surface waves resonance width and increase the resolution it is desirable to work with one dimensional photonic crystals with as small losses as possible. However this makes that the resonances observed in a single polarization reflection scheme are shallow and difficult to track in a sensing experiment. Here we report on the practical implementation of an angularly resolved ellipsometric optical sensing scheme based on Bloch surface waves sustained by tantalia/silica multilayers. The angular resolution is obtained by a focused illumination at fixed wavelength and detecting the angular reflectance spectrum by means of a CMOS array detector. The experimental results, obtained by using one tantalia/silica multilayer with a defined structure, show that the limit of detection can be pushed below 2.1x10-7RIU/Hz1/2. © 2014 SPIE

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Bloch surface waves-controlled fluorescence emission: Coupling into nanometer-sized polymeric waveguides

Cited by 44 publications

References 16 publications

Directing Fluorescence with Plasmonic and Photonic Structures

Directing Fluorescence with Plasmonic and Photonic Structures

Bloch surface wave structures for high sensitivity detection and compact waveguiding

Exploiting the phase properties of Bloch surface waves on photonic crystals for efficient optical sensing

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