High-sensitive terahertz biosensor from a thin metamaterial

We demonstrate a high-sensitive and multi-frequency THz measurement on the biomolecules based on a flexible metamaterial. The sensitivity of our proposed biosensor is finally achieved to be around 0.132 GHz/nm that is much higher than other reported results. The tumor molecules are coated on the metamaterial, and a very large frequency shift is observed, which implies its application in disease detection.