Controlling refractionusing sub-wavelength resonators
We construct metamaterials from sub-wavelength nonmagnetic resonators and consider the refraction of incoming signals traveling from free space into the metamaterial. We show that the direction of the transmitted signal is a function of its center frequency and bandwidth. The directionality of the transmitted signal and its frequency dependence is shown to be explicitly controlled by sub-wavelength resonances that can be calculated from the geometry of the sub-wavelength scatters. We outline how to construct a medium with both positive and negative index properties across different frequency bands in the near infrared and optical regime.
Publication Source (Journal or Book title)
Applied Sciences (Switzerland)
Chen, Y., & Lipton, R. (2018). Controlling refractionusing sub-wavelength resonators. Applied Sciences (Switzerland), 8 (10) https://doi.org/10.3390/app8101942