Near-Field Intensity Correlations in Semicontinuous Metal-Dielectric Films

Seal, Katyayani; Sarychev, Andrey K.; Noh, Heeso; Genov, Dentcho A.; Yamilov, Alexey; Shalaev, Vladimir M.; Ying, Zhiliang; Cao, Hui

doi:10.1103/physrevlett.94.226101

Cited by 54 publications

(47 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Spatial correlations and distribution of EM field have been extensively investigated in the study of the nature of wave transport in nonlinear disordered systems [59]. Due to the LSPs and the lightning-rod effect, which are governed by structural inhomogeneities, the correlations of local EM enhanced effect existing in disordered metallic nanostructure have been widely studied, as reviewed by V. M. Shalaev [60,61].…”

Section: Pef From Nonperiodical Metallic Plasmonic Nanostructurementioning

confidence: 99%

“…[59] Due to the LSPs and the lightning-rod effect, which are governed by structural inhomogeneities, the correlations of local EM enhanced effect existing in disordered Figure 6: The SEM picture of the silver nanorods fabricated at A) room temperature (320 K) and B) low temperature (140 K), C) PEF spectra of R6G on silver nanorod array substrates with various nanorod lengths, and D) the relationship between EF and the length of nanorods [58].…”

Section: Pef From Nonperiodical Metallic Plasmonic Nanostructurementioning

confidence: 99%

See 1 more Smart Citation

Recent Progress on Plasmon-Enhanced Fluorescence

et al. 2015

View full text Add to dashboard Cite

Abstract:The optically generated collective electron density waves on metal-dielectric boundaries known as surface plasmons have been of great scientific interest since their discovery. Being electromagnetic waves on gold or silver nanoparticle's surface, localised surface plasmons (LSP) can strongly enhance the electromagnetic field. These strong electromagnetic fields near the metal surfaces have been used in various applications like surface enhanced spectroscopy (SES), plasmonic lithography, plasmonic trapping of particles, and plasmonic catalysis. Resonant coupling of LSPs to fluorophore can strongly enhance the emission intensity, the angular distribution, and the polarisation of the emitted radiation and even the speed of radiative decay, which is so-called plasmon enhanced fluorescence (PEF). As a result, more and more reports on surface-enhanced fluorescence have appeared, such as SPASER-s, plasmon assisted lasing, single molecule fluorescence measurements, surface plasmoncoupled emission (SPCE) in biological sensing, optical orbit designs etc. In this review, we focus on recent advanced reports on plasmon-enhanced fluorescence (PEF). First, the mechanism of PEF and early results of enhanced fluorescence observed by metal nanostructure will be introduced. Then, the enhanced substrates, including periodical and nonperiodical nanostructure, will be discussed and the most important factor of the spacer between molecule and surface and wavelength dependence on PEF is demonstrated. Finally, the recent progress of tipenhanced fluorescence and PEF from the rare-earth doped up-conversion (UC) and down-conversion (DC) nanoparticles (NPs) are also commented upon. This review provides an introduction to fundamentals of PEF, illustrates the current progress in the design of metallic nanostructures for efficient fluorescence signal amplification that utilises propagating and localised surface plasmons.

show abstract

Section: Pef From Nonperiodical Metallic Plasmonic Nanostructurementioning

confidence: 99%

Section: Pef From Nonperiodical Metallic Plasmonic Nanostructurementioning

confidence: 99%

Recent Progress on Plasmon-Enhanced Fluorescence

et al. 2015

View full text Add to dashboard Cite

show abstract

“…For nearly continuous metal films, this response has been attributed to propagating surface waves 32 . As a consequence, the NC monolayer resembles a metallic thin film, displaying a high reflectivity and a characteristic sheen (point d in Fig.…”

Section: Close-packed Nanocrystal Assembliesmentioning

confidence: 99%

Tunable plasmonic lattices of silver nanocrystals

2007

View full text Add to dashboard Cite

Silver nanocrystals are ideal building blocks for plasmonic materials that exhibit a wide range of unique and potentially useful optical phenomena. Individual nanocrystals display distinct optical scattering spectra and can be assembled into hierarchical structures that couple strongly to external electromagnetic fields. This coupling, which is mediated by surface plasmons, depends on their shape and arrangement. Here we demonstrate the bottom-up assembly of polyhedral silver nanocrystals into macroscopic two-dimensional superlattices using the Langmuir-Blodgett technique. Our ability to control interparticle spacing, density, and packing symmetry allows for tunability of the optical response over the entire visible range. This assembly strategy offers a new, practical approach to making novel plasmonic materials for application in spectroscopic sensors, sub-wavelength optics, and integrated devices that utilize field enhancement effects.

show abstract

“…The power-law dependence of the Probability Density Function (PDF) for the intensity enhancement has been identified as a fingerprint of the scale invariance of such systems [3]. The spatial intensity Auto-Correlation Function (ACF), a second-order correlation function representative of the coherence of the intensity statistical distribution [4,5], has been deduced from experimental and/or numerical data to determine the correlation length [6,7,8] and the influence of the incident polarization [9,10].…”

Section: Introductionmentioning

confidence: 99%

Near-field intensity correlations on nanoscaled random silver/dielectric films

2010

View full text Add to dashboard Cite

Abstract. Near-field intensity distributions in inhomogeneous silver nanostructures were investigated using near-field optical microscopy. By varying the metallic concentration and the excitation wavelength, different plasmon scattering regimes were addressed and identified using statistical analysis tools such as the probability density function and intensity autocorrelation function. The intensity correlation length was found to indicate an intermediate regime where both surface scattering and plasmon localization coexist on the same scale.

show abstract

Near-Field Intensity Correlations in Semicontinuous Metal-Dielectric Films

Cited by 54 publications

References 22 publications

Recent Progress on Plasmon-Enhanced Fluorescence

Recent Progress on Plasmon-Enhanced Fluorescence

Tunable plasmonic lattices of silver nanocrystals

Near-field intensity correlations on nanoscaled random silver/dielectric films

Contact Info

Product

Resources

About