Wei Cao

TL;DR: In this paper, a planar terahertz metamaterial was used for ultra-sensitive sensing in the fingerprint region of the tera-hertz regime, where the low-loss quadrupole and Fano resonances with extremely narrow linewidths were used to measure the minute spectral shift caused due to the smallest change in the refractive index of the surrounding media.

TL;DR: In this article, a planar terahertz metamaterial has been used for ultra-sensitive sensing with high quality factor resonances in order to measure the minute spectral shift caused by the smallest change in the refractive index of the surrounding media.

TL;DR: In this paper, a unique approach to efficiently rotate the linear polarization of terahertz wave in a broadband configuration with tri-layer metasurfaces was proposed, where the Fabry-Perot cavity effect was attributed to the underlying mechanism of high transmittance and polarization rotation.

TL;DR: These high-Q metamaterials can be used in ultrasensitive label-free terahertz sensing, dense photonic integration, and narrowband filtering and are experimentally demonstrated with an ultrahigh quality (Q) factor of 227.5.

TL;DR: In this paper, a split ring resonator with two gaps on opposite sides is used to induce a narrow-band transparency window centred directly at the dipole resonance in terahertz signals for delay, storage, and nonlinear applications.