Magnetic Displays Inspired by Squid Skin Reveal Encrypted Images
Magnetic pixels in this little screen are capable of encrypting imagesJeremy Little/Michigan EngineeringResearchers, inspired by the color-changing skin of squids and other cephalopods, have created a flexible screen that stores and displays encrypted images using only magnetic particles, without any electronics.Scientists have been experimenting with metamaterials—engineered materials with unusual properties not found in nature—for...