Negative Refraction of Chiral Metamaterial Based on Four Crank Resonators

Garcia-Collado, A.J.; Molina‐Cuberos, G. J.; Nunez, M.J.; Martin, E.; Margineda, J.

doi:10.1080/09205071.2012.710447

Cited by 7 publications

(8 citation statements)

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“…very low absorption. The observed negative refraction bandwidth for one of the circular polarised waves results in a factor of two, which is larger than that obtained using the three-cranks resonator [18].…”

Section: Resultscontrasting

confidence: 57%

“…In contrast to n − , the value of Table 1 Chirality parameters for chiral media based on fiveand three-segment cranks. The unit cell of the three-segment configuration can be formed by four [18] or eight [24] n + remains nearly constant, with an almost zero imaginary part, i.e. very low absorption.…”

Section: Resultsmentioning

confidence: 99%

“…Here, we present an evolution of the three-segment crank resonator, whose basic cell consists of two or four packed threedimensional metallic cranks, all with the same symmetry, forming a parallelepiped [18]. The new chiral material is composed of a two-dimensional lattice of five-segment cranks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Large electromagnetic activity metamaterial composed of five‐segment cranks

Garcia-Collado¹,

Molina‐Cuberos

Margineda

et al. 2019

IET Microwaves, Antennas & Propagation

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A new chiral material composed of a two-dimensional lattice of five-segment cranks, with the same handedness is experimentally and numerically studied. The sample, formed by a single layer of such structures, exhibits huge electromagnetic activity and a negative refraction index for linearly polarized waves. Both the chirality parameter and the bandwidth with the negative refraction index are larger than those observed in chiral media composed of three-segment cranks. The material also shows pronounced electromagnetic activity (larger than 500 • per wavelength). This observed behaviour is attributed to the fact that the five-segment configuration enhances the electromagnetic coupling compared with the three-segment configuration.

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Section: Resultscontrasting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Large electromagnetic activity metamaterial composed of five‐segment cranks

Garcia-Collado¹,

Molina‐Cuberos

Margineda

et al. 2019

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…At resonance, the chirality changes the sign and its imaginary part peaks. The frequency dependence of permittivity and permeability observed in the plot are the same as those in metamaterials with a negative refractive index [14,15,24,25]. The chirality parameter depends on frequency, which follows a Condon model for a homogeneous chiral medium [32].…”

Section: Resultsmentioning

confidence: 59%

“…The setup is based on a previous one for permittivity and permeability measurements [22], and adapted to measure electromagnetic activity [10]. This system has been used to characterize chiral materials based on random distribution of elements and periodical lattices [10][11][23][24][25].…”

Section: Figures 2 Andmentioning

confidence: 99%