2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142963Some novel quasi-planar chiral inclusions, feasible from standard photo-etching techniques, are proposed. It is shown that such inclusions can be designed in order to present balanced electric, magnetic and magneto-electric polarizabilities. Using these inclusions, random and periodic bi-isotropic artificial metamaterials exhibiting a balanced positive/negative refractive index can be build up. These metamaterials would exhibit reasonable bandwidths and excellent matching to free space.4 pages, 2 figures, Metamaterials 2007, Rome 22-24 October 2007Opticstext