Angular plasmon response of gold nanoparticles arrays: approaching the Rayleigh limit

Djouda, Joseph Marae; Caputo, Roberto; Mahi, Nabil; Lévêque, Gaëtan; Akjouj, Abdellatif; Adam, Pierre‐Michel; Maurer, Thomas

doi:10.1515/nanoph-2016-0112

Cited by 30 publications

(28 citation statements)

References 33 publications

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“…Most of the numerical and theoretical studies of CLRs deal with infinitely large arrays of NPs under a normal incidence; however, it can be easily anticipated that, under oblique incidence, all-dielectric arrays may exhibit a plethora of properties overlooked in the literature. Our expectations are well justified by the reported results for plasmonic arrays [63,64] (with only ED response), which imply that, for all-dielectric NPs with ED and MD resonances, one may expect to observe even more effects. Thus, in this work, we address this problem and study electromagnetic properties of 2D arrays of all-dielectric NPs under oblique illumination.…”

Section: Introductionsupporting

confidence: 85%

Collective Lattice Resonances in All-Dielectric Nanostructures under Oblique Incidence

et al. 2020

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Collective lattice resonances (CLRs) emerging under oblique incidence in 2D finite-size arrays of Si nanospheres have been studied with the coupled dipole model. We show that hybridization between the Mie resonances localized on a single nanoparticle and angle-dependent grating Wood–Rayleigh anomalies allows for the efficient tuning of CLRs across the visible spectrum. Complex nature of CLRs in arrays of dielectric particles with both electric dipole (ED) and magnetic dipole (MD) resonances paves a way for a selective and flexible tuning of either ED or MD CLR by an appropriate variation of the angle of incidence. The importance of the finite-size effects, which are especially pronounced for CLRs emerging for high diffraction orders under an oblique incidence has been also discussed.

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Section: Introductionsupporting

confidence: 85%

Collective Lattice Resonances in All-Dielectric Nanostructures under Oblique Incidence

et al. 2020

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“…As a result, the coupling energy of the GSP mode decreases for higher incident angles and thus, the resonant wavelength redshifts. [ 37 ] Increasing the amount of stacked layers in this structure would enhance the coupling between MIM cells, with an eventual bulk behavior and smaller angular dispersion. In contrast, the sample with the smallest periodicity ( L = 200 nm) presents a weak dispersion, outlining the robustness of this structure with the angle and, therefore, its close convergence to a bulk metamaterial.…”

Section: Resultsmentioning

confidence: 99%

Electrodeposited Negative Index Metamaterials with Visible and Near Infrared Response

Gómez‐Castaño

Garcia‐Pomar

Pérez

et al. 2020

Advanced Optical Materials

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by the geometry rather than the constituent materials, which led to the field of metamaterials. Over the last decades, metamaterials research has grown exponentially due to the exceptional possibilities that they offer to manipulate light. Examples of extraordinary properties include artificial chirality, [1] super absorption, [2] extraordinary optical transmission, [3] optical magnetism, [4] or negative refraction. [5] From the several reported structures for achieving negative index metamaterials (NIMs) at optical frequencies, the multilayer fishnet design stands out as the most promising architecture in terms of tunability, figure of merit (FOM), and strong negative values. [6] Its design lies on metal-insulator-metal (MIM) stacks drilled with a 2D periodic array of holes. When the metallic layers are close enough, the propagating surface plasmon polaritons (SPPs) at the internal interfaces overlap, leading to the excitation of so-called gap surface plasmons (GSPs). [7] In this situation, out-of-phase currents are generated in the metallic strips, inducing a magnetic dipole in the insulator layer. This artificial magnetism along with the electric response arising from the metallic layers are the source of the negative refractive index (RI). [8] In the recent years, there has been an increasing interest in the commercial applications of metamaterials. However, the implementation of these architectures in an actual device is not an easy task. Recent advances in nanofabrication have enabled the high-throughput and up scalable production of NIMs using patterning methods such as self-assembly [9-11] or nanoimprint lithography (NIL), [12,13] where the proper arrangement gave rise to negative index at optical frequencies. In particular, the inspiring works by Gao et al. [13] demonstrated large area metamaterials operating at visible and telecommunication frequencies using a subtractive lift-off process combined with metal evaporation and reactive ion etching. Despite the scalability of the patterning techniques used in these works, most of them involve several steps, make use of top-down expensive methods such as electron beam evaporation or implies transferring steps that can damage the structures. In terms of the absolute values achieved, there is still room for improvement for large area NIMs. A record value of −0.73 at 710 nm being the lowest negative refractive index achieved in the visible range with an scalable technique so far. [13] It is also worth noting that obtaining NIMs with a negligible angular Negative index metamaterials have revolutionized the field of photonics because of their unconventional electromagnetic properties absent in naturally occurring materials. It remains a challenge however, to achieve strong negative refractive index at optical frequencies over large areas in a device compatible fashion. In this work, a scalable method for the straightforward production of fishnet-like negative index metamaterials combining soft nanoimprinting and electrodeposition is reported. In four simple steps...

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“…This effect was predicted as early as 1985 in the context of rough surfaces for surface-enhanced Raman scattering [15,16], before being rediscovered almost 20 years later for one-dimensional arrays of silver nanoparticles [17]. Later, lattice modes in two-dimensional gold nanoparticles arrays were shown to significantly improve the finesse of the resonance [14,[18][19][20][21][22][23][24], finding applications in metal-enhanced fluorescence [25], non-linear optics [26] and the realization of plasmon-based lasers [27]. Aluminum nanoparticle arrays have been shown to enhance and redirect the emission of nearby dye molecules, with potential applications including solid-state lighting [28,29].…”

Section: Introductionmentioning

confidence: 98%

Lattice modes and plasmonic linewidth engineering in gold and aluminum nanoparticle arrays

Khlopin¹,

Laux²,

Wardley³

et al. 2017

J. Opt. Soc. Am. B

174

143

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Angular plasmon response of gold nanoparticles arrays: approaching the Rayleigh limit

Cited by 30 publications

References 33 publications

Collective Lattice Resonances in All-Dielectric Nanostructures under Oblique Incidence

Collective Lattice Resonances in All-Dielectric Nanostructures under Oblique Incidence

Electrodeposited Negative Index Metamaterials with Visible and Near Infrared Response

Lattice modes and plasmonic linewidth engineering in gold and aluminum nanoparticle arrays

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