Increasing The Sensitivity Of Terahertz Metamaterials For Dielectric Sensing By Substrate Etching
2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)(2020)
Abstract
We investigate the effect of the effective substrate refractive index on the sensitivity of terahertz (THz) metamaterials for dielectric sensing by substrate etching. We found the effective refractive index near the metamaterials can be actively controlled by etching, allowing optimization of the sensitivity. Our experimental findings are in good agreement with finite element method (FEM) simulation results.
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Key words
terahertz metamaterials,dielectric sensing,substrate etching,effective substrate refractive index,finite element method simulation
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