Intelligent metasurfaces have gained significant importance in recent years due to their
ability to dynamically manipulate electromagnetic (EM) waves. Their multifunctional …

Metasurfaces, the ultrathin, 2D version of metamaterials, have recently attracted a surge of
attention for their capability to manipulate electromagnetic waves. Recent advances in …

Fano resonances offer exciting features in enhancing the non-linearity and sensing
capabilities in metamaterial systems. An active photoswitching of Fano resonances in a …

The terahertz spectral regime, ranging from about 0.1–15 THz, is one of the least explored
yet most technologically transformative spectral regions. One current challenge is to develop …

Graphene is a new material with a single-layer two-dimensional (2D) honeycomb lattice
structure. It has excellent optical, electrical and mechanical properties, and it is closely …

Metasurfaces, ultrathin and planar electromagnetic devices with sub-wavelength unit cells,
have recently attracted enormous attention for their powerful control over electromagnetic …

How photoexcitations evolve into Coulomb-bound electron and hole pairs, called excitons,
and unbound charge carriers is a key cross-cutting issue in photovoltaics and …

We present optically tunable metamaterials (MMs) on flexible polymer sheets operating at
terahertz (THz) frequencies. The flexible MMs, consisting of electric split-ring resonators …

Ultrafast terahertz spectroscopy accesses the dark excitonic ground state in resonantly
excited (6, 5) single-walled carbon nanotubes via internal, direct dipole-allowed transitions …

Ultrafast terahertz (THz) pump-probe spectroscopy reveals an unusual out-of-equilibrium
Cooper pair nonlinear dynamics and a nonequilibrium state driven by femtosecond (fs) …