Serebryannikov, A. E.Mutlu, M.Özbay, Ekmel2016-02-082016-02-0820150003-6951http://hdl.handle.net/11693/26374It is shown that the scaling of subwavelength resonances in open ultrathin chiral structures can be obtained by varying only the permittivity of dielectric spacers, while multiband one-way polarization conversion and related asymmetric transmission remain possible. These features are quite general and obtainable in a wide range of parameter variation. Surprisingly, the difference in the power of ε for the classical ε-1/2 scaling rule and the empirical rules obtained in the present letter does not exceed 22%, giving an important entry point for future theoretical studies and design strategies. Both spectral scaling and conservation of the polarization characteristics can be achieved by using either tunneling or real-index impedance matching. The scaled structures with strong polarization and directional selectivity may have thickness of λ/100 and smaller. © 2015 AIP Publishing LLC.EnglishPhysical propertiesAsymmetric transmissionsChiral structuresDesign strategiesDielectric spacersDirectional selectivityPolarization characteristicsPolarization conversionTheoretical studyPolarizationArticle10.1063/1.4936603