A group of Oxford University scientists have accidentally created a new display technology -- one that could enable a new era of smart glasses, bendable displays and even artificial retinas. The team refers to its discovery as 'nano-pixels;' it's a tiny sandwich of phase change material and transparent electrodes that change color when given a tiny jolt of current. These stacks can be used to draw tiny images, like the examples above, each one smaller than the width of a human hair. "We didn't set out to invent a new kind of display," explained research lead Harish Bhaskaran, his team was just exploring the relationship between the electrical and optical properties of phase change materials. Creating nano-pixels just sort of happened along the way.