Sharp Trapped-Mode Resonances in Planar Metamaterials with a Broken Structural Symmetry
Sharp Trapped-Mode Resonances in Planar Metamaterials with a Broken Structural Symmetry
We report that a resonance response with a very high quality factor can be achieved in a planar metamaterial by introducing symmetry breaking in the shape of its structural elements, which enables excitation of trapped modes, i.e., modes that are weakly coupled to free space.