Mie resonance-based dielectric metamaterials

Zhao, Qian; Zhou, Ji; Zhang, Fuli; Lippens, D.

doi:10.1016/s1369-7021(09)70318-9

Cited by 774 publications

(487 citation statements)

References 86 publications

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“…Efficient anti-reflection coatings (AR) have been intensively studied with many different approaches having been explored for this purpose [1][2][3] , such as multi-layered thinfilms 4,5 , graded index matching via surface texturing with micro-and nano-structures [6][7][8][9][10][11] , plasmonic metasurfaces [12][13][14] and more recently, metasurfaces [15][16][17][18][19][20][21] based on ordered arrays of sub-micrometric dielectric antennas (dielectric Mie resonators [22][23][24][25][26][27][28] ). Depending on the application of the AR different aspects (lowest value of the total reflectance, broad spectral range, broad acceptance angle, transparency or light trapping) determine the optimal features and fabrication method.…”

Section: Introductionmentioning

confidence: 99%

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Bouabdellaoui

Checcucci

Wood

et al. 2018

Phys. Rev. Materials

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We demonstrate a simple self-assembly method based on solid state dewetting of ultra-thin silicon films and germanium deposition for the fabrication of efficient anti reflection coatings on silicon for light trapping. Via solid state dewetting of ultra-thin silicon on insulator and epitaxial deposition of Ge we fabricate SiGe islands with a high surface density, randomly positioned and broadly varied in size. This allows to reduce the reflectance to low values in a broad spectral range (from 500 nm to 2500 nm) and a broad angle (up to 55 degrees) and to trap within the wafer a large portion of the impinging light (∼40%) also below the band-gap, where the Si substrate is non-absorbing. Theoretical simulations agree with the experimental results showing that the efficient light coupling into the substrate mediated by Mie resonances formed within the SiGe islands. This lithography-free method can be implemented on arbitrarily thick or thin SiO2 layers and its duration only depends on the sample thickness and on the annealing temperature.

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Section: Introductionmentioning

confidence: 99%

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Bouabdellaoui

Checcucci

Wood

et al. 2018

Phys. Rev. Materials

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“…The main drawback of using plasmonic particles in the visible frequency range is their intrinsic losses, which strongly affect their overall performance and limits their scalability to dimensions for practical use. One of the possible ways to avoid such limitation and still have similar resonant properties is to use high-refractive index dielectric nanoparticles 15,16 . Recently, visible-range nanoantennas based on spherical silicon nanoparticles have been theoretically analysed demonstrating higher efficiency compared with their metallic analogues [17][18][19] .…”

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confidence: 99%

Directional visible light scattering by silicon nanoparticles

et al. 2013

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Directional light scattering by spherical silicon nanoparticles in the visible spectral range is experimentally demonstrated for the first time. These unique optical properties arise because of simultaneous excitation and mutual interference of magnetic and electric dipole resonances inside a single nanosphere. Such behaviour is similar to Kerker's-type scattering by hypothetic magneto-dielectric particles predicted theoretically three decades ago. Here we show that directivity of the far-field radiation pattern of single silicon spheres can be strongly dependent on the light wavelength and the nanoparticle size. For nanoparticles with sizes ranging from 100 to 200 nm, forward-to-backward scattering ratio above six can be experimentally obtained, making them similar to 'Huygens' sources. Unique optical properties of silicon nanoparticles make them promising for design of novel low-loss visible-and telecom-range metamaterials and nanoantenna devices.

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“…The quality factors of these Mie resonances and their lightscattering efficiency stongly depend on the material refractive index. Owing to the resonant properties of high refractive index dielectric spherical particles, they were suggested as novel building blocks of dielectric metamaterials with negative effective permeability and permittivity 9,10 . The first experimental demonstrations of dielectric metamaterials with strong magnetic and electric responses in different spectral ranges from microwave to mid-infrared frequencies have been recently reported 9,11 .…”

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confidence: 99%

Laser printing of silicon nanoparticles with resonant optical electric and magnetic responses

et al. 2014

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Silicon nanoparticles with sizes of a few hundred nanometres exhibit unique optical properties due to their strong electric and magnetic dipole responses in the visible range. Here we demonstrate a novel laser printing technique for the controlled fabrication and precise deposition of silicon nanoparticles. Using femtosecond laser pulses it is possible to vary the size of Si nanoparticles and their crystallographic phase. Si nanoparticles produced by femtosecond laser printing are initially in an amorphous phase (a-Si). They can be converted into the crystalline phase (c-Si) by irradiating them with a second femtosecond laser pulse. The resonance-scattering spectrum of c-Si nanoparticles, compared with that of a-Si nanoparticles, is blue shifted and its peak intensity is about three times higher. Resonant optical responses of dielectric nanoparticles are characterized by accumulation of electromagnetic energy in the excited modes, which can be used for the realization of nanoantennas, nanolasers and metamaterials.

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Mie resonance-based dielectric metamaterials

Cited by 774 publications

References 86 publications

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Self-assembled antireflection coatings for light trapping based on SiGe random metasurfaces

Directional visible light scattering by silicon nanoparticles

Laser printing of silicon nanoparticles with resonant optical electric and magnetic responses

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