Japan's mastery of nanomaterials culminated in 2016 with the invention of the electroencephalograph (EEG) patch, a revolutionary new medical device made possible with the technology. EEGs once required major equipment, time and costs, but the EEG patch makes a quick brainwave scan possible just by placing it on the patient's forehead. It can even be used in other fields, such as scanning for building infrastructure issues. In this episode, we examine the nanomaterial that is poised to bring about a new future.