People are buying helmets, face masks, vests and beds that emit long-wavelength light. Beneath the hype, there is some interesting biology.

Human bodies are not quite as dark as they look. A growing body of research suggests that living tissue constantly releases an ultraweak glow, a stream of photons that appears to switch off when life ...

A new LED design uses a built-in nanoscale metasurface to emit circularly polarized light directly, eliminating bulky optics ...

A new one-step process miniaturises OLEDs to smaller than their emitted wavelength, enabling precise control of light direction and polarisation for displays, sensors and optical uses. (Nanowerk News) ...

You’ve probably seen or heard at least once in your lifetime about fireflies – the famous light-emitting insects! They form the Lampyridae family and are sometimes called glowworms or lightning bugs.