LundBranched nanowires let trapped LED light escape.

Lighting uses a fifth of global electricity, so cheaper efficient LEDs matter widely.

Conventional LEDs trap photons deep inside via total internal reflection, but this design generates light near the surface.

The Lund team has not yet built a commercial device, only tested one.

How each outlet framed it
Phys.org
describes nanowire branch design—light emission below wavelength threshold avoids total internal reflection, improving LED efficiency

Sources: Phys.org