Cherenkov radiation provides a valuable way to identify high-energy particles in a wide
momentum range, through the relation between the particle velocity and the Cherenkov …

Tunable sources of X-ray radiation are widely used for imaging and spectroscopy in
fundamental science, medicine and industry. The growing demand for highly tunable, high …

Extracting light from silicon is a longstanding challenge in modern engineering and physics.
While silicon has underpinned the past 70 years of electronics advancement, a facile …

Metasurfaces constitute a powerful approach to generate and control light by engineering
optical material properties at the subwavelength scale. Recently, this concept was applied to …

On August 22, 1879, in a lecture to the British Association for the Advancement of Science, 1
Sir William Crookes announced that “radiant matter”(his term for the electrons emerging from …

Free‐electron radiation phenomena facilitate enticing potential to create light emission with
highly tunable spectra, covering hard‐to‐reach frequencies ranging from microwave to X …

As one of leading technologies in detecting relativistic particles, Cherenkov radiation plays
an essential role in modern high‐energy and particle physics. However, the limited photon …

The exponentially decaying nature of evanescent waves renders it difficult to capture, extract
and engineer the wealth of energy and information that they can carry. Utilizing the out‐of …

Smith-Purcell radiation results from charged particles that move closely to a periodic
structure. In this work, we report the on-demand control of Smith-Purcell radiation by …

Transition radiation is a fundamental process of light emission and occurs whenever a
charged particle moves across an inhomogeneous region. One feature of transition radiation …