Molecular Typing of PVL-Positive Staphylococcus aureus Isolates from Lithuania and Genome Sequencing of a Local Outbreak Strain
in: Scientific Reports (2026)
The optical resonances of plasmonic meta surfaces can have a significant impact on the ability to control the light properties. In particular, resonant plasmonic meta surfaces exhibit photonic topological transitions, leading to sharp transformations in the topology of the is frequency contours in reciprocal lattice space. For instance, elliptical contours can transform into hyperbolic ones, and vice versa, significantly altering the wavefront and properties of the propagating light. This transition is accompanied by the flat is frequency contours corresponding to the canalization regime, which means the divergence less and high-directional wave propagation. In this work, we investigate the formation and engineering of the photonic topological transitions and the related effects in the plasmonic meta surfaces based on gold nano patches via the continuous transformation from isotropic to anisotropic cases. We study the impact of the induced anisotropy on the spectral positions and amplitudes of the surface conductivity resonances describing the meta surfaces leading to the emergence of hyperbolicity, near-field hot-spots and plasmon canalization. Particular attention is paid to a comparative analysis of the two anisotropy-inducing strategies, stretching the meta-atoms and stretching the lattice, in terms of functionality and fabrication of plasmonic resonant meta surfaces. Our findings emphasize the importance of using anisotropic resonant nanostructures for a plethora of photonic applications, especially in the area of the in-plane light management.