Terahertz Metamaterials with Simultaneously Negative Electric and Magnetic Resonance Responses based on Bimaterial Pop Up Structures

In this paper, we present a metamaterial with simultaneously negative electric and magnetic resonance responses in the terahertz (THz) frequency range. The structure is composed of in-plane split resonator rings (SRRs) for desired electric response and out-of-plane SRRs realized by bimaterial pop up structures for magnetic response. Experimental results conducted using THz Time Domain Spectroscopy (THz-TDS) show that the presented metamaterial has both electric and magnetic resonance peaks at 0.5 THz. The performance of the metamaterial can be further improved by optimization of the structure's geometry and the operating frequency of the metamaterial can be tuned by scaling dimensions.