When impinging on optical structures or passing in their vicinity, free electrons can
spontaneously emit electromagnetic radiation, a phenomenon generally known as …

Terahertz (THz) radiation has broad applications ranging from medical imaging to
spectroscopy. One viable source of high‐intensity THz radiation is the Smith–Purcell (SP) …

We construct the first-principles theory for the scattering of the Coulomb field of a fast
electron traveling along an array of nano-or microparticles. The electron's trajectory is …

Smith-Purcell radiation (SPR) is a kind of electromagnetic wave radiation that happens
when an energetic beam of electrons passes very closely parallel to the surface of a ruled …

In conventional materials, Cherenkov radiation (CR) due to a moving charged particle is
associated with a broad frequency range and velocity threshold. Here, we show that using a …

Moving electrons interacting with media can give rise to electromagnetic radiations and has
been emerged as a promising platform for particle detection, spectroscopies, and free …

The metasurface has recently emerged as a powerful platform to engineer wave packets of
free electron radiation at the mesoscale. Here, we propose that Airy beams can be …

We demonstrate that when a charged particle moves on top of a metal-slot metasurface
consisting of metallic slot resonators, strong Smith–Purcell electromagnetic (EM) radiation …

We present an intensive vertical orientation Smith–Purcell radiation with the 2D well-array
metasurface. It is shown that the moving electrons can induce three induced surface currents …

Transition radiation (TR) is widely used as a radiation source in a wide spectral range, from
terahertz to x rays. Conventional flat surfaces are usually used, but with the development of …