The team of Prof. Lahann and Prof. Pena-Francesch have developed a flexible screen inspired by squids that can store and display encrypted images using magnetic fields instead of electronics. This innovative device allows images to be revealed publicly with a standard magnet or kept private using a complex magnetic array that acts as an encryption key. The screen’s design, influenced by the color-changing abilities of squids and octopi, enables multiple private images to be displayed from a single public image, enhancing security. Potential applications include clothing, stickers, and e-book readers.
The research is reported in Advanced Materials.
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