4 papers
Reconfigurable topological valley-Hall interfaces: Asymptotics of arrays of Dirichlet and Neumann inclusions for multiple scattering in metamaterials
Richard Wiltshaw, Henry J. Putley, Christelle Bou Dagher +1
We study two-dimensional periodic metamaterials in which idealised cylindrical inclusions are modelled by boundary conditions. In the scalar time-harmonic setting, the background f…
Polarisation conversion and optical meron topologies in anisotropic epsilon-near-zero metamaterials
Vittorio Aita, Anastasiia Zaleska, Henry J. Putley +1
Plasmonic metamaterials provide a flexible platform for light manipulation and polarisation management, thanks to their engineered optical properties with exotic dispersion regimes…
Mixing Skyrmions and Merons in Topological Quasicrystals of Evanescent Optical Field
Henry J. Putley, Bryn Davies, Francisco J. Rodríguez-Fortuño +2
Photonic skyrmion and meron lattices are structured light fields with topologically protected textures, analogous to magnetic skyrmions and merons. Here, we report the theoretical…
On the problem of comparing graded metamaterials
Bryn Davies, Lili Fehértói-Nagy, Henry J. Putley
We use a simple effective model, obtained through the application of high-frequency homogenisation, to tackle the fundamental question of how the choice of gradient function affect…