Thermally reconfigurable Fano resonance in water brick pair metamaterial

Abstract

We demonstrate thermally reconfigurable Fano resonance based on water metamaterial. A water brick pair metamaterial is proposed and prepared via injecting pure water inside dielectric template by 3D printing method. Magnetically induced Fano resonance is produced via interactions between dark and bright modes induced by the magnetic Mie resonance of water brick pair. Fano resonance is achieved experimentally and numerically by breaking either the size or temperature symmetry inside water brick pair. Furthermore, Fano resonance peak can be thermally modulated from 0.79 GHz to 0.87 GHz as the water temperature varies from 40 ℃ to 80 ℃.

Keywords

• Fano resonance
• Water-based metamaterial
• Thermal tunability