The space between galaxies is not empty. In a new map of the early universe, those “blank” stretches take on a faint, hydrogen-blue glow that had mostly escaped surveys until now.

Electrical engineers at Duke University have demonstrated a pyroelectric photodetector operating at speeds far beyond those typically associated with thermal ...

Metasurfaces featuring tailored silver nanocubes could allow thermal photodetectors to approach speeds akin to traditional digital cameras.