Figure 2. Metamaterial sensing of penicillia.

(a) THz transmission amplitudes, for transmission through a plain Si substrate, with (red solid line) and without (black dashed line) deposition of penicillia. (inset) A microscopic image of penicillia deposited on the Si substrate. (b) Two microscope images of metamaterials patterns on Si substrate, with the deposition of penicillia a (left) and after fungicide treatments (right). (c) THz transmission amplitudes measured before (gray solid line) and after (red solid line) the deposition. Transmission after the fungicide treatment is shown as blue dashed line.