AR Glass Prototype and Experimental Results Based on Metagrating. Credit: POSTECH Augmented-reality (AR) technology is rapidly finding its way into everyday life, from education and health care to gaming and entertainment. However, the core AR device remains bulky and heavy, making prolonged wear uncomfortable. A breakthrough from POSTECH now promises to change that. The study is published in the journal Nature Nanotechnology. One of the main hurdles to the commercialization of AR glasses has be...