Artist’s impression of silica–gold nanoparticles acting as “light concentrators”, focusing energy into tiny hotspots to boost terahertz emission. The effect was studied using ultrafast laser pulses. Image generated by Dr Vittorio Cecconi using Adobe Firefly.

Tiny ‘light-concentrating’ particles boost terahertz technology, study shows

Scientists have found a way to boost terahertz technology using particles thousands of times smaller than a grain of sand.