In its earliest stages, and developed by graduate students from Keio University in Tokyo, the “biological microgrid” Raiki will aim to harvest electricity from trees by drawing from the “triboelectric” effect in foliage. This is a phenomenon of movement, much like static electricity, generated when positively charged leaves come into contact with negatively charged materials (like a tree trunk). Industrial designer Catalina Lotero explained this …
Technology + Ethics Behind Turning Trees into Power Generators