As the sun moves across the sky, sunflowers continually orient themselves to soak up the most light (SN: 8/4/16). Now a type of human-made material can do that, too. This is the first artificial ...

Photonic material in the shape of a flower can move in response to light, closely tracking the angle of maximum exposure. Credit: Fio Omenetto, Tufts University An artificial “sunflower” that ...