Fig. 2 | Scientific Reports

Fig. 2

From: Electrostatic enhanced terahertz metamaterial biosensing via gold nanoparticles integrated with biomolecules

Fig. 2

Simulation and experimental results of the two-EIT metamaterial under y-orientation polarized incident radiation. (a) Periodic unit. (b) Simulated transmission spectra under different scaling factors (k = 0.9, 1, 1.1). (c) Experimental (Exp.) and simulated (Sim.) transmission spectra at k = 1.1. The inset is the optical microscope images of the fabricated metamaterial. Scale bar: 60 μm. (d–f) 3D E-field enhancement maps at the frequencies of Dip1, Dip2 and Dip3. Geometrical parameters at k = 1.1 are P = 99 μm, L1 = 92.4 μm, L2 = 61.6 μm, L3 = 69.3 μm, L4 = 26.4 μm.

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