Fig. 1 The dielectric response models for conventional dielectric materials and for metamaterials. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Fig. 1 The dielectric response models for conventional dielectric materials and for metamaterials.

Caption

Fig. 1 The dielectric response models for conventional dielectric materials and for metamaterials. For conventional dielectric materials, there are three types of polarization models: Drude model for collective oscillation of free electrons, Lorentz model for local resonance of electric dipoles, and Debye model for relaxation process of dipole orientation. In contrast, for metamaterials, there are only two models: Drude model for infinitely long wires, and Lorentz model for resonant structures (e.g., short metallic wires and split-ring resonators (SRRs)). Relaxation model is absent in metamaterial research.

Credit

by Xinmin Fu, Yajuan Han et al.

Usage Restrictions

Credit must be given to the creator.

License

CC BY

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.