...Yingying Wang; Jiahui Yu; Huancheng Cao Purpose At low frequencies, energy no longer propagates in wave form, requiring distinct methodologies for studying metamaterials in the kHz band compared to high-frequency applications. To address the challenges in simulating low-frequency electromagnetic...

... used are often not accurate. Furthermore, a procedure for the termination of a metasurface, with application-driven goals, is given. Originality/value This paper investigates the distribution of the currents in a 2D metamaterial realized with magnetically coupled resonant coils. Different models...

... the Drude model and is described in equation (1) (Biabanifard et al., 2018a , 2018b ; Biabanifard, 2021): © Emerald Publishing Limited 2024 Emerald Publishing Limited Licensed re-use rights only Circuit analysis Metamaterials Equivalent circuit model Graphene modeling...

...Melanie Schiemer; Thomas Reum; Hannes Toepfer Purpose The purpose of this paper is to present an alternative modeling approach in terms of the determination of a physically equivalent circuit model for one-dimensional (1D) planar metamaterials in the high-frequency regime, without a postprocessing...

...Zhi Gong; Shiyou Yang; Chongxi Guan Purpose The purpose of this paper is to develop a modeling method for the analysis of low-frequency metamaterials (MTMs) and their near-field applications. Design/methodology/approach The Euler–Lagrange method is introduced. An MTM is modeled as a multi...

...Yiying Li; Dun Sun; Shiyou Yang Purpose The purpose of this paper is to develop a robust optimization methodology for metamaterial (MM) unit designs to minimize the effect of manufacturing and operational uncertainties. Design/methodology/approach A new robustness quantification function...

... charge; h = 6.62607015 × 10⁻³⁴ J.s is the Planck’s constant; Circuit analysis Finite element method Metamaterials Equivalent circuit model Graphene modeling Metasurfaces ℏ = h 2π = 1 .054571817×10 -34   J .s is the reduced Planck’s constant; ω...

...Ayoub Bellouch; Amine El Alami; Frederic Messine; Nathalie Raveu Purpose The purpose of this sudy is to provide a complete optimization-based methodology to design waveguides with metamaterial walls. The present methodology is based on optimization. Indeed, the inverse problems of design...

.../methodology/approach This paper uses finite element analysis to study, design and optimize arrays of resonating elements as beam steering devices. The first set of such devices involves metamaterial-based apertures fed by a waveguide, tunable via the permittivity of the host material. In the second approach...

...Yiying Li; Shiyou Yang Purpose The purpose of this paper is to develop a pertinent design optimization methodology for symmetric designs of a metamaterial (MM) unit. Design/methodology/approach A cell division mechanism is introduced and used to design a new selecting mechanism in the proposed...

... to take the next step and propose a new systematic technique for extracting the quadrupolarisability of planar metamaterial scatterers. Design/methodology/approach Firstly, it is assumed that the particle, under study, can be modelled as a set of dipole and quadrupole moments, and by utilising...

...Stanislaw Gratkowski and Marcin Ziolkowski; Antonios X. Lalas; Nikolaos V. Kantartzis; Theodoros D. Tsiboukis Purpose – Wireless power transfer (WPT) is deemed as an emerging technology with exciting applications, like wireless charging devices, and electric vehicles, whereas metamaterials...

... of a core/shell particle, arranged in a planar array configuration, with a polymethyl methacrylate (PMMA)-graphene core and gold thin shell. Findings – By exploiting the proposed analytical model the design of a metamaterial-based sensor, operating in the optical frequency range, for the detection...

...Kamil Boratay Alici; Mehmet Deniz Caliskan; Filiberto Bilotti; Alessandro Toscano; Lucio Vegni; Ekmel Ozbay Purpose – Metamaterial unit cells composed of deep subwavelength resonators brought up new aspects to the antenna miniaturization problem. The paper experimentally demonstrates...

... – The approach is based on the transformation optics framework, which allows systematic design and modelling of anisotropic, inhomogeneous metamaterials with inherent field-manipulation capabilities. Findings – The paper finds that a transformation-optics-based DPS slab can compensate the inherent...