Red-light devices are all over social feeds and make enormous promises. From the many, we find the few that are actually worth your commitment, time, and money.

Permanent lights like these used to require professional installation. Enbrighten Eternity Lights are a DIY job, and they're ...

A novel red LED using Eu-doped GaN is a promising component for next-generation micro-LED display with ultrasmall-size, full-color, and high-resolution. The LED exhibits narrow-band red emission and ...