Color Rendering Plasmonic Aluminum Substrates with Angular Symmetry Breaking

Duempelmann, Luc; Casari, Daniele; Luu-Dinh, Angélique; Gallinet, Benjamin; Novotny, Lukas

doi:10.1021/acsnano.5b05710

Cited by 98 publications

(67 citation statements)

References 54 publications

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“…This analysis directly leads to the quantitative estimation of the temperature increase in the direct vicinity of an Al structure which is in excellent agreement with measured ∆T. For a moderate excitation power, the relative temperature increase for a specific excitation location can reach [15][16][17][18][19][20] • C at a vertical distance of 150 nm in the surrounding. The spectral overlapping of high order SP resonances with the interband transitions in such aluminum objects results in a controlled heat generation and corresponding on-demand temperature increase in the near field.…”

Section: Resultssupporting

confidence: 72%

Local field enhancement and thermoplasmonics in multimodal aluminum structures

et al. 2017

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Aluminum nanostructures have recently been at the focus of numerous studies due to their properties including oxidation stability and surface plasmon resonances covering the ultraviolet and visible spectral windows. In this article, we reveal a new facet of this metal relevant for both plasmonics purpose and photo-thermal conversion. The field distribution of high order plasmonic resonances existing in two-dimensional Al structures is studied by nonlinear photoluminescence (nPL) microscopy in a spectral region where electronic interband transitions occur. The polarization sensitivity of the field intensity maps shows that the electric field concentration can be addressed and controlled ondemand. We use a numerical tool based on the Green dyadic method to analyze our results and to simulate the absorbed energy that is locally converted into heat. The polarization-dependent temperature increase of the Al structures is experimentally quantitatively measured, and is in an excellent agreement with theoretical predictions. Our work highlights Al as a promising candidate for designing thermal nanosources integrated in coplanar geometries for thermally assisted nanomanipulation or biophysical applications.Metallic nanostructures sustain localized and delocalized Surface Plasmon (SP) resonances when they are excited under specific conditions. These resonances are giving rise to large enhancement of the electromagnetic field, subwalength confinement, and plasmon propagation in structures with low dimensionalities 1,2 . Owing to their remarkable optical properties, SP resonances have led to a large number of direct applications including high-precision biological sensing 3 , light manipulation by metasurfaces 4 , design of integrated devices for information processing 5 , and highly localized heat sources 6,7 . Due to the large negative real part of the dielectric function in the visible spectrum, gold or silver, either as lithographed patterns or as colloidal nanoparticles, represent the bulk of plasmonic devices so far. Although both metals exhibit complementary features that have fostered the fast development of plasmonics as a technology, these two noble metals also suffer from drawbacks; namely bulk oxidation for silver and an important interband absorption for gold at energies above 2.25 eV. Moreover, both are expensive materials limiting their systematic and massive use in commercial systems. These considerations triggered a rising interest for non-conventional plasmonic materials 8,9 . In this context, while discarded for a long time for plasmonic applications due to its high losses in the red part of the visible spectrum, aluminum has recently demonstrated its potential for applications in the blue-ultraviolet energy range 1,[10][11][12][13][14][15][17][18][19][20] . The main asset of Al over other noble metals stems mainly from a * Corresponding author: aurelien.cuche@cemes.fr plasma frequency ω p situated at a higher energy. In addition to its intrinsic electronic properties, the optical response of aluminum is ...

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Section: Resultssupporting

confidence: 72%

Local field enhancement and thermoplasmonics in multimodal aluminum structures

et al. 2017

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“…Fabrication techniques to render plasmonic colours include laser interference lithography9, electron beam lithography81011, ion beam lithography or milling12 and hot embossing or nanoimprint lithography912. Kumar et al 8.…”

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confidence: 99%

Laser-induced plasmonic colours on metals

et al. 2017

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Plasmonic resonances in metallic nanoparticles have been used since antiquity to colour glasses. The use of metal nanostructures for surface colourization has attracted considerable interest following recent developments in plasmonics. However, current top-down colourization methods are not ideally suited to large-scale industrial applications. Here we use a bottom-up approach where picosecond laser pulses can produce a full palette of non-iridescent colours on silver, gold, copper and aluminium. We demonstrate the process on silver coins weighing up to 5 kg and bearing large topographic variations (∼1.5 cm). We find that colours are related to a single parameter, the total accumulated fluence, making the process suitable for high-throughput industrial applications. Statistical image analyses of laser-irradiated surfaces reveal various nanoparticle size distributions. Large-scale finite-difference time-domain computations based on these nanoparticle distributions reproduce trends seen in reflectance measurements, and demonstrate the key role of plasmonic resonances in colour formation.

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“…6 are compared with the transmission spectra from the different microlenses, the enhanced transmissions and the suppressed transmissions are present at different wavelengths depending on the lattice spacing. According to previous reports [34], the selective spectral response was discovered to be stemming from the combined effect of the propagating surface plasmon resonance (PSPR) sustained at the metal/dielectric interface and the localized surface plasmon resonance (LSPR) around the nanoholes. As observed in Fig.…”

Section: Resultsmentioning

confidence: 99%

Batch Fabrication of Broadband Metallic Planar Microlenses and Their Arrays Combining Nanosphere Self-Assembly with Conventional Photolithography

Wang

Zhu

et al. 2017

Nanoscale Res Lett

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A novel low-cost, batch-fabrication method combining the spin-coating nanosphere lithography (NSL) with the conventional photolithographic technique is demonstrated to efficiently produce the metallic planar microlenses and their arrays. The developed microlenses are composed of subwavelength nanoholes and can focus light effectively in the entire visible spectrum, with the foci sizes close to the Rayleigh diffraction limit. By changing the spacing and diameter of nanoholes, the focusing efficiency can be tuned. Although the random defects commonly exist during the self-assembly of nanospheres, the main focusing performance, e.g., focal length, depth of focus (DOF), and full-width at half-maximum (FWHM), keeps almost invariable. This research provides a cheap way to realize the integrated nanophotonic devices on the wafer level.

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Color Rendering Plasmonic Aluminum Substrates with Angular Symmetry Breaking

Cited by 98 publications

References 54 publications

Local field enhancement and thermoplasmonics in multimodal aluminum structures

Local field enhancement and thermoplasmonics in multimodal aluminum structures

Laser-induced plasmonic colours on metals

Batch Fabrication of Broadband Metallic Planar Microlenses and Their Arrays Combining Nanosphere Self-Assembly with Conventional Photolithography

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