Free-Standing Complementary Asymmetric Metasurface for Terahertz Sensing Applications
Fatima Taleb, Ibraheem Al‐Naib, Martín Koch
Abstract
We designed and tested a highly sensitive metasurface device based on free-standing complementary asymmetric split-ring resonators at terahertz frequencies. It is utilized for sensing a galactose film. We characterized the device using the induced red shift of a Fano resonance observed in the THz transmission. The sensor has a high sensitivity of 91.7 GHz/RIU due to a significant interaction between the galactose overlayer and the metasurface.
Topics & Concepts
Terahertz radiationFano resonanceSplit-ring resonatorOptoelectronicsMaterials scienceResonatorOverlayerTransmission (telecommunications)Resonance (particle physics)OpticsPlasmonPhysicsComputer scienceTelecommunicationsParticle physicsCondensed matter physicsMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface TechnologiesAntenna Design and Analysis