Magnetic Kirigami by Laser Cutting

Magnetic kirigami with tunable configurations under magnetic actuation is of significant interest in various emerging fields. However, there remains a grand challenge to develop magnetic kirigami with a facile fabrication strategy, programmable magnetization, and functionality. In this work, we present a novel magnetic kirigami that is readily fabricated by the laser cutting technique. The magnetic kirigami consists of an array of magnetic microplates, each with a programmed magnetization. By applying an actuation magnetic field, each microplate can rotate and even flip, allowing for predesigned kirigami configurations. By further coating the surface of the microplate array, the magnetic kirigami can be programmed with functionality. We demonstrate a potential application of information encryption by engineering magnetic kirigami into a magneto-responsive QR code. Providing a simple fabrication strategy, our work paves the way for other applications of magnetic kirigami.