Spectral and Directional Reshaping of Fluorescence in Large Area Self-Assembled Plasmonic–Photonic Crystals

Ding, Boyang; Hrelescu, Calin; Arnold, N.; Isić, Goran; Klar, Thomas A.

doi:10.1021/nl3035114

Cited by 80 publications

(70 citation statements)

References 53 publications

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“…This assumption is valid for concentrated colloidal suspensions. For an fcc crystal of spheres with diameter σ the volume fraction is given by φ = 2πσ 3 /3a 3 , where a is the lattice constant. Thus, the lattice constant is calculated by a = (2π/3φ) Let us estimate the interparticle spacing from the height profile [ Fig.…”

Section: Discussion Interparticle Spacing In Fcc {111}mentioning

confidence: 99%

“…On the other hand, Ag nanoparticles/nanostructure were employed in some studies 1, 2, 5, 3 because of their high performance of the electric field enhancement. For the photonic crystal material, polystyrene (a regular array of particles or a regular pattern) was selected in some studies, 2,4,3,6 while poly(methyl methacrylate) was used by Xu et al 5 and silica was used by Kim et al 1 An advantage of polystyrene is narrow particle size dispersity. Polystyrene suspensions with the dispersity less than few percent in the coefficient of variation can be synthesized by a soap-free emulsion polymerization.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Kawakami

Mori

Nagashima

et al. 2015

Bulletin of the Chemical Society of Japan

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Aiming at fabrication of hybrid plasmonic-photonic crystals, gel-immobilized colloidal crystals made of a polystyrene colloidal suspension and an N -(Hydroxy methyl)acrylamidbased gel were immersed into an aqueous dispersion of gold nanoparticles. Atomic force microscope (AFM) observations have been performed for the gel-immobilized colloidal crystals with gold nanoparticles deposited on their surfaces. In the present study, the diameter of a colloidal sphere was c.a. 190 nm. The diameter of a gold nanoparticle was the same as in a preliminary study, c.a. 40 nm. Various immersion times up to two hours were tested. Surface of a sample of 2 hr immersion has been observed. Prior to the AFM observation, the sample was dried in a desiccator for 18 hrs. We have identified a facecentered cubic {111} structure of a colloidal crystal of nearly close packing. Nanoparticles isolated with one another have been observed on the surface of gel-immobilized crystal, which can be regarded as gold nanoparticles from their sizes.2

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Section: Discussion Interparticle Spacing In Fcc {111}mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Kawakami

Mori

Nagashima

et al. 2015

Bulletin of the Chemical Society of Japan

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“…In addition, our study also shows alternative measures to effectively improve the functionality of nanophotonic structures, e.g. reshaping radiative properties of plasmonic resonators by inducing quantum emitters but not merely modifying physical structures [44].…”

mentioning

confidence: 83%

Mode Modification of Plasmonic Gap Resonances Induced by Strong Coupling with Molecular Excitons

Chen

Qin

et al. 2017

Nano Lett.

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Plasmonic cavities can be used to control the atom-photon coupling process at the nanoscale, since they provide ultrahigh density of optical states in an exceptionally small mode volume. Here we demonstrate strong coupling between molecular excitons and plasmonic resonances (so-called plexcitonic coupling) in a film-coupled nanocube cavity, which can induce profound and significant spectral and spatial modifications to the plasmonic gap modes. Within the spectral span of a single gap mode in the nanotube-film cavity with a 3-nm wide gap, the introduction of narrow-band J-aggregate dye molecules not only enables an anti-crossing behavior in the spectral response, but also splits the single spatial mode into two distinct modes that are easily identified by their far-field scattering profiles. Simulation results confirm the experimental findings and the sensitivity of the plexcitonic coupling is explored using digital control of the gap spacing. Our work opens up a new perspective to study the strong coupling process, greatly extending the functionality of nanophotonic systems, with the potential to be applied in cavity quantum electrodynamic systems. † These authors contributed equally to this work 2 Strong light-matter interactions build upon fast energy exchange [1] between excitonic quantum emitters and electromagnetic (EM) modes in a cavity, which leads to cavity-exciton mode hybridization, manifesting as a split in the cavity spectral response, known as vacuum Rabi splitting.Understanding these phenomena is very important for cavity quantum electrodynamics applications [2,3]; for example, quantum computing requires repeated manipulation of excitonic states with photons before atomic or molecular excitons lose their coherence. On the other hand, once strongly coupled to a resonant cavity, electronic states of molecules can be greatly reshaped [4] from those in free space, enabling a variety of extraordinary effects, such as modification of molecular thermodynamics [5] and chemical landscape [6], mediation of energy transfer between multiple molecules [7] and even alternation of photosynthetic processes in bacteria [8].Strong coupling (SC) requires a high atomic cooperativity (, where g is the coupling strength, γ and κ are the spectral width of the excitonic transition of emitters and EM modes respectively. To achieve high C, traditional investigations [9][10][11][12] have used cavities with high Q performance (quality factor κ ω / = Q , where ω is the oscillation frequency of the cavity).Another solution is to reduce the cavity mode volume V, sincewhere N is the number of excitons contributing to the coupling process. In this context, plasmonic cavities have been proposed to investigate strong coupling, because these cavities can concentrate light energy within deep subwavelength volumes, and thus are capable of providing high cooperativity by compensating their moderate Q values with ultra-small V [13][14][15]. Specifically, plasmonic cavities are specially designed metallic nanostructures, in w...

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“…[ 18,[23][24][25][26][27] On the other hand, photonic crystal, as a kind of material with a periodically varying index, can be used to effectively modulate localized electric fi elds and has been successfully explored to enhance the luminescent intensity of UCNPs. [28][29][30] It is expected that through the combination of surface plasmon and photonic crystal effects, the luminescent intensity of UCNPs can be improved more effectively. In this work, we present a novel device and signifi cant modulation of gold nanorods (AuNRs)/Polymethylmethacrylate (PMMA) opal photonic crystals (OPCs) surface plasmon photonic crystal (SPPC) on UCL of NaYF 4 :Yb 3+ , Er 3+ NPs, which has perfectly combined surface plasmon effect of AuNRs and PC effects of 3D PMMA opals.…”

mentioning

confidence: 99%

Local Field Modulation Induced Three‐Order Upconversion Enhancement: Combining Surface Plasmon Effect and Photonic Crystal Effect

et al. 2016

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A 2D surface plasmon photonic crystal (SPPC) is achieved by implanting gold nanorods onto the periodic surface apertures of the poly(methyl methacrylate) (PMMA) opal photonic crystals. On the surface of the SPPC, the overall upconversion luminescence intensity of NaYF4 :Yb(3+) , Er(3+) under 980 nm excitation is improved more than 10(3) fold. The device is easily shifted to a transparent flexible substrate, applied to flexible displays.

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Spectral and Directional Reshaping of Fluorescence in Large Area Self-Assembled Plasmonic–Photonic Crystals

Cited by 80 publications

References 53 publications

Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Mode Modification of Plasmonic Gap Resonances Induced by Strong Coupling with Molecular Excitons

Local Field Modulation Induced Three‐Order Upconversion Enhancement: Combining Surface Plasmon Effect and Photonic Crystal Effect

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