Liquid metal controlled by low voltage reversibly switches color and infrared response in nanoscale surfaces, enabling low power reflective displays, sensors, and optical security features.

Magnetic graphene oxide sheets fold, move, sense motion, and switch function by swapping magnetic layers, offering a fast, reprogrammable platform for soft robots and other morphable structures.

From editable PDFs to automatic translations, Google Docs has a long list of features many people have never used.