Core-Shell Particles as Building Blocks for Systems with High Duality Symmetry

@article{Rahimzadegan2018CoreShellPA,
  title={Core-Shell Particles as Building Blocks for Systems with High Duality Symmetry},
  author={Aso Rahimzadegan and Carsten Rockstuhl and Ivan Fernandez‐Corbaton},
  journal={Physical Review Applied},
  year={2018}
}
Material electromagnetic duality symmetry requires a system to have equal electric and magnetic responses. Electromagnetic duality enables technologically important effects like artificial optical activity and zero back-scattering, is a requirement for metamaterials in transformation optics, Huygens wave-front control, and maximal electromagnetic chirality, and appears in topological photonic systems. Intrinsically dual materials that meet the duality conditions at the level of the constitutive… 

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References

SHOWING 1-10 OF 58 REFERENCES

Role of duality symmetry in transformation optics

Maxwell's equations in curved space-time are invariant under electromagnetic duality transformations. We exploit this property to constraint the design parameters of metamaterials used for

Objects of maximum electromagnetic chirality

Theoretical requirements for objects of maximum electromagnetic chirality are provided and a twofold resonantly enhanced and background-free circular dichroism measurement setup, and angle-independent helicity filtering glasses are outlined.

Photonic topological insulators.

It is shown that metacrystals-superlattices of metamaterials with judiciously designed properties-provide a platform for designing topologically non-trivial photonic states, similar to those identified for condensed-matter topological insulators.

Dual and Chiral Objects for Optical Activity in General Scattering Directions

Optically active artificial structures have attracted tremendous research attention. Such structures must meet two requirements: Lack of spatial inversion symmetries and, a condition usually not

Broadband suppression of backscattering at optical frequencies using low permittivity dielectric spheres

Wavelength-sized spheres made from low permittivity materials are put forward, which occur in a parameter regime where approximate duality is met for all multipolar order an ≈ bn, in a weakly wavelength dependence fashion.

Optical force and torque on dipolar dual chiral particles

On the one hand, electromagnetic dual particles preserve the helicity of light upon interaction. On the other hand, chiral particles respond differently to light of opposite helicity. These two

P·T·Dsymmetry-protected scattering anomaly in optics

In time-reversal invariant electronic systems the scattering matrix is anti-symmetric. This property enables an effect, designated here as "scattering anomaly", such that the electron transport does

Dual and anti-dual modes in dielectric spheres.

We present how the angular momentum of light can play an important role to induce a dual or anti-dual behaviour on a dielectric particle. Although the material the particle is made of is not dual,

Bottom-up fabrication and optical characterization of dense films of meta-atoms made of core-shell plasmonic nanoparticles.

An attempt to fabricate low index metamaterials by a bottom-up approach, meta-atoms constituted of silica-coated silver nanoparticles are assembled by a Langmuir-Schaefer technique and may constitute a good model for numerical simulations.

Duality symmetry and Kerker conditions.

These conditions can be applied to any particle with cylindrical symmetry, not only to spherical particles as the original Kerker conditions were derived for, and find applications in the field of metamaterials, where new materials with directional scattering are being explored.
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