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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219036 | PMC |
| http://dx.doi.org/10.3390/s20082265 | DOI Listing |
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