PhysicsThe invisibility cloak inventor now has better tricks up his sleeve John Pendry is known for creating an invisibility cloak. Twenty years on, he has used the same principles to fashion an even more powerful kind of metamaterial that can teach us about the wild frontiers of physics Features
TechnologyAI chip smaller than a grain of salt uses light to decode data A tiny chip on the tip of a fibre-optic cable can passively harness light to perform AI computations, dramatically reducing the amount of energy and computing power required News