Quasiperiodic Moiré Plasmonic Crystals

Lubin, Steven M.; Hryn, Alexander J.; Huntington, Mark D.; Engel, Clifford J.; Odom, Teri W.

doi:10.1021/nn404703z

Cited by 38 publications

(43 citation statements)

References 37 publications

(63 reference statements)

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“…The opening of these rotational-symmetric patterns scales with the hyperuniform correlation length parameter as predicted via the spectral function method.Coherent control of optical waves by scattering from 2D nanostructured surfaces is revolutionising the way we shape the wavefront of an incoming light beam, opening new avenues for miniaturised optical components for integrated optical circuits [1], flat display technology [2], and energy harvesting [3,4]. Metallic surfaces are in particular attractive due to the strong light-matter interaction associated with surface plasmons, enabling diffraction control through plasmonic crystals [5, 6] and metal nano-particle arrays [7,8], broadband operation and increase of the plasmon mode density [9], enhanced omnidirectional light extraction and coupling [10], broadband absorption [11], fluorescence enhancement [12] and lasing [13,14], and more recently the realisation of ultra thin lenses [15] and metasurface holograms [16].Whereas periodic geometries suffer from limited rotational symmetries, aperiodic and disordered topologies, with their richer symmetries and patterns, can lead to superior optical functionalities [8], as in omnidirectional absorption for solar applications [17,18], scattering-induced light localisation [19] and light extraction from LED/OLED [20]. Moreover, disordered metasurfaces are expected to be more resilient against fabrication imperfection and therefore more apt for technological implementation.…”

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confidence: 99%

“…Coherent control of optical waves by scattering from 2D nanostructured surfaces is revolutionising the way we shape the wavefront of an incoming light beam, opening new avenues for miniaturised optical components for integrated optical circuits [1], flat display technology [2], and energy harvesting [3,4]. Metallic surfaces are in particular attractive due to the strong light-matter interaction associated with surface plasmons, enabling diffraction control through plasmonic crystals [5,6] and metal nano-particle arrays [7,8], broadband operation and increase of the plasmon mode density [9], enhanced omnidirectional light extraction and coupling [10], broadband absorption [11], fluorescence enhancement [12] and lasing [13,14], and more recently the realisation of ultra thin lenses [15] and metasurface holograms [16].…”

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confidence: 99%

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Reciprocal space engineering with hyperuniform gold disordered surfaces

et al. 2017

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Hyperuniform geometries feature correlated disordered topologies which follow from a tailored k-space design. Here we study gold plasmonic hyperuniform metasurfaces and we report evidence of the effectiveness of k-space engineering on both light scattering and light emission experiments. The metasurfaces possess interesting directional emission properties which are revealed by momentum spectroscopy as diffraction and fluorescence emission rings at size-specific k-vectors. The opening of these rotational-symmetric patterns scales with the hyperuniform correlation length parameter as predicted via the spectral function method.Coherent control of optical waves by scattering from 2D nanostructured surfaces is revolutionising the way we shape the wavefront of an incoming light beam, opening new avenues for miniaturised optical components for integrated optical circuits [1], flat display technology [2], and energy harvesting [3,4]. Metallic surfaces are in particular attractive due to the strong light-matter interaction associated with surface plasmons, enabling diffraction control through plasmonic crystals [5, 6] and metal nano-particle arrays [7,8], broadband operation and increase of the plasmon mode density [9], enhanced omnidirectional light extraction and coupling [10], broadband absorption [11], fluorescence enhancement [12] and lasing [13,14], and more recently the realisation of ultra thin lenses [15] and metasurface holograms [16].Whereas periodic geometries suffer from limited rotational symmetries, aperiodic and disordered topologies, with their richer symmetries and patterns, can lead to superior optical functionalities [8], as in omnidirectional absorption for solar applications [17,18], scattering-induced light localisation [19] and light extraction from LED/OLED [20]. Moreover, disordered metasurfaces are expected to be more resilient against fabrication imperfection and therefore more apt for technological implementation. Given the vast possible designs of non-periodic topologies, ranging from random to correlated-disordered, their full potential is still to be fully explored.There exists a general class of disordered systems, called hyperuniform disordered (HuD) photonic structures, which are of particular interest because they exhibit wide and isotropic photonic band gaps [21], rotational symmetry and broadband k-space control, and can be systematically generated through a specific design rule via universal tessellation protocol [22,23]. Pioneering experiments on photonic HuD systems have explored IR light diffraction in 3D dielectric structures [24], microwave band-gaps formation [25], polarization filtering [26] and random quantum cascade lasers [27]. Theoretical proposals have been put forward for surface enhanced Raman scattering [28], transparency design [29], high-Q optical cavities and low-loss waveguides [30-32], and microwave photonic circuits [25]. HuD structures fabrication is improving quickly, reaching already the IR range [24] but not yet the visible.Here, we report visible light scatt...

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confidence: 99%

Reciprocal space engineering with hyperuniform gold disordered surfaces

et al. 2017

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“…[48][49] Hence, the usage of Moiré patterns has proved to be a versatile technique for the formation of complex superlattices and plasmonic nanostructures. [37][38][50][51] With the ability to incorporate Moiré patterns in NSL, we have managed to generate complex nanopatterns in a high-throughput and low-cost way.…”

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Moiré Nanosphere Lithography

Chen

Rajeeva

et al. 2015

ACS Nano

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We have developed moiré nanosphere lithography (M-NSL), which incorporates in-plane rotation between neighboring monolayers, to extend the patterning capability of conventional nanosphere lithography (NSL). NSL, which uses self-assembled layers of monodisperse micro/nanospheres as masks, is a low-cost, scalable nanofabrication technique and has been widely employed to fabricate various nanoparticle arrays. Combination with dry etching and/or angled deposition has greatly enriched the family of nanoparticles NSL can yield. In this work, we introduce a variant of this technique, which uses sequential stacking of polystyrene nanosphere monolayers to form a bilayer crystal instead of conventional spontaneous self-assembly. Sequential stacking leads to the formation of moiré patterns other than the usually observed thermodynamically stable configurations. Subsequent O2 plasma etching results in a variety of complex nanostructures. Using the etched moiré patterns as masks, we have fabricated complementary gold nanostructures and studied their optical properties. We believe this facile technique provides a strategy to fabricate complex nanostructures or metasurfaces.

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“…Spectra of quasicrystals also include localized excitations concentrated in various parts of the self-similar structure, which is a characteristic feature of such aperiodic systems 13 . Previously, these properties have been widely studied in the context of photonics and phononics for one-dimensional (1D) quasicrystals designed by using the Fibonacci sequence [14][15][16] .…”

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confidence: 99%

Magnons in a Quasicrystal: Propagation, Extinction, and Localization of Spin Waves in Fibonacci Structures

et al. 2019

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Magnonic quasicrystals exceed the possibilities of spin wave (SW) manipulation offered by regular magnonic crystals, because of their more complex SW spectra with fractal characteristics. Here, we report the direct X-ray microscopic observation of propagating SWs in a magnonic quasicrystal, consisting of dipolar coupled permalloy nanowires arranged in a one-dimensional Fibonacci sequence. SWs from the first and second band as well as evanescent waves from the band gap between them are imaged. Moreover, additional mini-band gaps in the spectrum are demonstrated, directly indicating an influence of the quasiperiodicity of the system. Finally, the localization of SW modes within the Fibonacci crystal is shown. The experimental results are interpreted using numerical calculations and we deduce a simple model to estimate the frequency position of the magnonic gaps in quasiperiodic structures. The demonstrated features of SW spectra in one-dimensional magnonic quasicrystals allows utilizing this class of metamaterials for magnonics and makes them an ideal basis for future applications.

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Quasiperiodic Moiré Plasmonic Crystals

Cited by 38 publications

References 37 publications

Reciprocal space engineering with hyperuniform gold disordered surfaces

Reciprocal space engineering with hyperuniform gold disordered surfaces

Moiré Nanosphere Lithography

Magnons in a Quasicrystal: Propagation, Extinction, and Localization of Spin Waves in Fibonacci Structures

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