Scattering properties of meta-atoms

Rockstuhl, Carsten; Menzel, Christoph; Mühlig, Stefan; Petschulat, J.; Helgert, Christian; Etrich, C.; Chipouline, A.; Pertsch, Thomas; Lederer, F.

doi:10.1103/physrevb.83.245119

Cited by 60 publications

(46 citation statements)

References 26 publications

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“…Bottom-up fabrication technologies could alleviate part of this problem but suffer from limitations of their own, namely the absence of long-range order [8], even though they've made strides in recent years [9]. Therefore, to leverage bottom-up fabrication technologies and go towards three-dimensional, large-scale devices, it is necessary to develop novel tools for a thorough understanding of disordered metamaterials [10,11].…”

Section: Open Accessmentioning

confidence: 99%

Multipoles of Even/Odd Split-Ring Resonators

et al. 2015

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Abstract:The ultimate goal of metamaterial engineering is to have complete control over the electromagnetic constitutive parameters in three-dimensional space. This engineering can be done by considering either single meta-atoms or full meta-arrays. We follow the first route and perform numerical simulations of split-ring resonators, with different gap numbers and under varying illumination scenarios, to investigate their individual multipolar scattering response. For the fundamental resonance, we observe that odd-gap rings always exhibit overlapping electric and magnetic dipole responses while even-gap rings only exhibit that behavior accidentally. We expect our results to foster progress in the engineering of three-dimensional disordered metamaterials.

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Section: Open Accessmentioning

confidence: 99%

Multipoles of Even/Odd Split-Ring Resonators

et al. 2015

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“…Along with that, the possibility to control light propagation in structured arrays of nanoparticles was studied by theoretical and experimental means [25][26][27][28]. To describe light interactions with nanoparticles and their aggregates in this size range, various theoretical approaches have been employed including the discrete-dipole approximation (DDA) [29], the extended Mie theory [16,[30][31][32] and the finite-difference time-domain (FDTD) method [25,33,34].…”

Section: Introductionmentioning

confidence: 99%

First-principles simulation of light propagation and exciton dynamics in metal cluster nanostructures

2016

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“…In this paper we will focus on the functionality of such individual meta-atoms and discuss their properties in terms of a multipole analysis [19][20][21][22][23], which gained considerable interest recently for single-particle analysis as well as arrays of scatterers [24][25][26][27][28]. At the example of meta-atoms with an artificial magnetic response we will show that the multipole analysis is an appropriate tool to identify the desired metaatoms, which might eventually be used to build up local metamaterials [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Extreme coupling: A route towards local magnetic metamaterials

et al. 2014

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Genuinely homogeneous metamaterials, which may be characterized by local effective constitutive relations, are required for many spectacular metamaterial applications. Such metamaterials have to be made of meta-atoms, i.e., subwavelength resonators, which exhibit only electric and or magnetic dipole and negligible higher-order multipolar polarizabilities in the spectral range of interest. Here, we show that these desired meta-atoms can be designed by exploiting the extreme coupling regime. Appropriate meta-atoms are identified by performing a multipole analysis of the field scattered from the respective meta-atom. To design those particular meta-atoms it is important to disclose the frequency and angular-dependent polarizability of both dipole moments. We demonstrate the applicability of a purely analytical model to accurately calculate for a normally incident plane wave reflection and transmission from meta-surfaces made of periodically arranged meta-atoms. With our work we identify a possible route towards the engineering of artificial materials while only considering the response from its constituents. Our approach is generally applicable to all spectral domains and can be used to evaluate and design metamaterials made from different constituting materials, e.g., metals, dielectrics, or semiconductors.

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Scattering properties of meta-atoms

Cited by 60 publications

References 26 publications

Multipoles of Even/Odd Split-Ring Resonators

Multipoles of Even/Odd Split-Ring Resonators

First-principles simulation of light propagation and exciton dynamics in metal cluster nanostructures

Extreme coupling: A route towards local magnetic metamaterials

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