Fudan University

A computer hidden inside a single strand of fabric sounds like sci-fi, but it isn't. Researchers have built a “fiber chip” thinner than hair, which could be turned into everyday clothing or used to treat neurological diseases and aid robotic surgery.

​Even though road signs already tend to be highly reflective, some night-time drivers still don't notice the things. New technology could help, as it causes signs to reflect in an attention-getting rainbow of changing colors.