Metal foil paper is very common in our daily life, and everyone is not surprised. The foil paper introduced below looks nothing special, but when someone comes near and touches it, it will immediately curl up into a ball, like a shy little girl. As soon as you leave, it will slowly stretch out. This interesting interactive project was completed by a professor from the K?ln International School of Design. In fact, transparent threads are tied up and down the paper foil, and the "shy" curling function is achieved through programs and sensors.
