Ningning Xu

TL;DR: By combining the freedom of both the structural design and the orientation of split ring resonator antennas, this work demonstrates terahertz metasurfaces that are capable of controlling both the phase and amplitude profiles over a very broad bandwidth.

TL;DR: In this article, a high efficiency, broadband, tunable and flexible quarter-wave plate based on a multilayer metamaterial is presented, with excellent achromatic π/2 phase retardance with high transmission.

TL;DR: This work investigates parity time symmetry breaking in polarization space using a metasurface with anisotropic absorption, whose building blocks consist of two orthogonally orientated meta-atoms with the same resonant frequency but different loss coefficients.

TL;DR: A toroidal dipole in metasurfaces provides an alternate approach for the excitation of high-Q resonances by exploiting tightly confined loops of oscillating magnetic field that curl around the fictitious arrow of the toroid dipole vector.