Guwahati, Aug. 8 -- Researchers from the Indian Institute of Technology Guwahati, India, and Imperial College London, UK, have developed a tailored 'meta-grid' of nanoparticles that could make light-emitting diodes (LEDs) brighter, energy-efficient and durable. 'Meta-grid' or 'metamaterial grid' is a specifically patterned array (grid) of nanoparticles acting as metamaterials, capable of exhibiting extraordinary optical properties.

In today's world, LEDs are deployed almost everywhere - from traffic lights to backlighting for electronic displays, smartphones, large billboards, decorative lightings, water purification, and decontamination of infected surfaces. An increase in LED light output would significantly reduce energy needs on a la...