Terahertz Biosensing All-Dielectric Metasurface for Bacillus Thuringiensis Cry1Ac Protein Sensing

A biosensor based on all-dielectric terahertz metasurface for bacillus thuringiensis (Bt) Cry1Ac protein sensing was proposed and experimentally demonstrated. The resonance frequency and resonance amplitude of the devices treated with different concentrations of Bt protein solution satified a linear relationship with the concentration, which is promised to have wide application prospect in biosensing and thereby, has attracted increasing attention.