We report here the design of an optically nonactive metamaterial by assembling metallic helices with different chiralities. With linearly polarized incident light, pure electric or magnetic resonance can be selectively realized, which accordingly leads to negative permittivity or negative permeability. Further, we show that pure electric or magnetic resonance can be interchanged at the same frequency band by merely changing the polarization of incident light for 90°. This design demonstrates a unique approach in constructing metamaterials.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)