Negative refractive index due to chirality

By Jiangfeng Zhou, Jianfeng Dong, Thomas Koschny, Maria Kafesaki, Costas M. Soukoulis. 2009

390 citations recorded by the source corpus.

We demonstrate experimentally and numerically that metamaterials based on bilayer cross wires give giant optical activity, circular dichroism, and negative refractive index. The presented chiral design offers a much simpler geometry and more efficient way to realize negative refractive index at any frequency. We also developed a retrieval procedure for chiral materials which works successfully for circularly polarized waves.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/869f9d8baed7768f526d33736524f3ac192b287a

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In Aerospace Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Topological design and additive manufacturing of porous metals for bone scaffolds and orthopaedic implants: A review. (2016, background): “Thereafter, great achievements were obtained in the design of exceptional material properties including negative thermal expansion coefficient [94] and negative refraction index [95].”
Chiral metamaterials: simulations and experiments (2009, background): “Zhou et al [55] recently demonstrated strong rotation of polarization azimuth and negative refraction on a bi-layer structure composed of non-chiral cross-wires.”
Past Achievements and Future Challenges in 3D Photonic Metamaterials (2011, background): “(b) The experimentally fabricated cross-wires chiral metamaterials that give n<0 at GHz frequencies [41].”
Chiral metamaterials: from optical activity and negative refractive index to asymmetric transmission (2013, background): “refractive index due to chirality have been demonstrated for the microwave and terahertz regimes [18, 19, 29, 31].”
Past achievements and future challenges in the development of three-dimensional photonic metamaterials (2011, background): “rimentally fabricated rosette chiral metamaterials that give negative n at GHz frequencies [40]. (b) The experimentally fabricated cross-wires chiral metamaterials that give n<0 at GHz frequencies [41]. (c) Scheme of the chiral structure composed of right-handed twisted gold crosses. Oblique-view”