Plasmonic resonances in optomagnetic metamaterials based on double dot arrays

Kravets, V. G.; Schedin, F.; Taylor, Shaun; Viita, David; Григоренко, А. Н.

doi:10.1364/oe.18.009780

Cited by 23 publications

(27 citation statements)

References 37 publications

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“…the basis has two metallic nanoparticles rather than the more usual one-particle basis. Dimer arrays have been investigated before, but predominantly for out-of-plane dipole moments [19,27,28], here our focus is on in-plane dipole moments. Whilst out-of-plane SLRs can be supported by arrays of plasmonic nanoparticles in an asymmetric environment (i.e.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic surface lattice resonances in arrays of metallic nanoparticle dimers

Humphrey

Barnes

2016

J. Opt.

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Abstract. We investigate the optical response of square arrays of metallic nanoparticles where each lattice site is occupied by two particles, a dimer. In particular we examine the surface lattice resonances arising in these structures when the inplane dipole moments associated with the plasmon modes of the nanoparticles couple together. The addition of a second particle to the basis leads to a more complex optical response, one that is anisotropic in the plane of the array. Extinction spectra are recorded at normal incidence for different orientations of the incident electric field. We compare our experimentally derived data with those from a coupled-dipole model. We show how the separation between the particles that comprise the dimer helps determine the overall response of the system.

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Section: Introductionmentioning

confidence: 99%

Plasmonic surface lattice resonances in arrays of metallic nanoparticle dimers

Humphrey

Barnes

2016

J. Opt.

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“…Kravets et al recently indicated that ''holes in the fishnet structures are not actually necessary to produce negative index of refraction using MSM''. 62) Therefore, the negative refraction as observed in this work will not be attributed to magnetic phenomena at optical frequencies. …”

Section: The Goos-hänchen and Optical Magnetism Effectsmentioning

confidence: 62%

Study of Positive and Negative Refraction of Visible Light at the Cu/Air Interface

et al. 2011

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Light transmission at the Cu/air interface was measured in the visible region for a series of wedge-shaped Cu film samples. It is found that light refraction at the Cu/air interface changes from negative in the Drude region, passing through zero at about E g , to positive in the interband-transition region. Detailed discussion is given to exclude those mechanisms which have been arguably assigned as the cause of negative refraction at a metal/dielectric interface. Based on the spectra of the measured refractive index and modeled in the Drude region, the positive and negative refraction analyzed in this work are qualitatively in agreement with dispersion of the group refractive index, and may aid in understanding light transmission at the metal/dielectric interface as characterized by the law of refraction.

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“…Array dimensions were confirmed using scanning electron microscopy (SEM). Sample fabrication was discussed in depth in previous works 30, 56, 57 .…”

Section: Methodsmentioning

confidence: 99%

Plasmon-induced nanoscale quantised conductance filaments

Kravets

Marshall

Schedin

et al. 2017

Sci Rep

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Plasmon-induced phenomena have recently attracted considerable attention. At the same time, relatively little research has been conducted on electrochemistry mediated by plasmon excitations. Here we report plasmon-induced formation of nanoscale quantized conductance filaments within metal-insulator-metal heterostructures. Plasmon-enhanced electromagnetic fields in an array of gold nanodots provide a straightforward means of forming conductive CrOx bridges across a thin native chromium oxide barrier between the nanodots and an underlying metallic Cr layer. The existence of these nanoscale conducting filaments is verified by transmission electron microscopy and contact resistance measurements. Their conductance was interrogated optically, revealing quantised relative transmission of light through the heterostructures across a wavelength range of 1–12 μm. Such plasmon-induced electrochemical processes open up new possibilities for the development of scalable devices governed by light.

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Plasmonic resonances in optomagnetic metamaterials based on double dot arrays

Cited by 23 publications

References 37 publications

Plasmonic surface lattice resonances in arrays of metallic nanoparticle dimers

Plasmonic surface lattice resonances in arrays of metallic nanoparticle dimers

Study of Positive and Negative Refraction of Visible Light at the Cu/Air Interface

Plasmon-induced nanoscale quantised conductance filaments

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