Interactions between light and matter play an instrumental role in spectroscopy, sensing,
quantum information processing and lasers. In most of these applications, light is considered …

This review discusses how low-energy valence excitations created by swift electrons can
render information on the optical response of structured materials with unmatched spatial …

Developing high-efficiency microwave absorbers remains challenging in the broadband
range, particularly in the low-frequency range containing the L band and even lower. To …

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

Acoustic metamaterial science is an emerging field at the frontier of modern acoustics. It
provides a prominent platform for acoustic wave control in subwavelength-sized …

The characteristic blue glow of Cerenkov luminescence (CL) arises from the interaction
between a charged particle travelling faster than the phase velocity of light and a dielectric …

Nanophotonic devices, composed of metals, dielectrics, or semiconductors, enable precise
and high-spatial-resolution manipulation of electromagnetic waves by leveraging diverse …

Cherenkov radiation (CR) excited by fast charges can serve as on-chip light sources with a
nanoscale footprint and broad frequency range. The reversed CR, which usually occurs in …

For over 80 years of research, the conventional description of free-electron radiation
phenomena, such as Cherenkov radiation, has remained unchanged: classical three …

Cherenkov radiation,,, has played a key role in the discovery of some fundamental particles
and physical phenomena, including anti-protons, J particles and neutrino oscillations. The …