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physics.optics2026
Additive and Subtractive Color Filters Based on Birefringent Dielectric Metasurfaces
OndÅej Äervinka, Filip Ligmajer, OndÅej Brunn +3
Dielectric metasurfaces offer a path to high-efficiency optical components at the sub-wavelength scale. In this work, we utilize the wavelength-dependent birefringence of TiO2 nano…
physics.optics2026
Reconfigurable plasmonic hot spots enabled by composite VO2-gold plasmonic antennas
Rostislav Åepa, JiÅà Kabát, Tomáš Å ikola +1
We theoretically investigate the formation of electric and magnetic hot spots with reconfigurable plasmonic antennas. We consider three material systems offering different levels o…
physics.optics2024
Plasmonic lightning-rod effect
Vlastimil KÅápek, Rostislav Åepa, Michael Foltýn +2
The plasmonic lightning-rod effect refers to the formation of a strong electric near field of localized surface plasmons at the sharp features of plasmonic antennas. While this eff…