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Digital Mechanical Metamaterial

We have developed a digital mechanical metamaterial capable of encoding mechanical information with graphical stiffness pattern. Our prototype, known as the "Pixelated In Situ Programmable Mechanical Metamaterial (PPMM)", leverages graphical stiffness patterns to program and reprogram an unprecedented level of versatile mechanical capabilities without requiring additional infrastructure. These capabilities include shape-shifting, shape-memory, stress-strain response, and Poisson's ratio, as well as application-oriented functionalities such as tunable and reusable energy absorption and pressure delivery, all of which can be quantitatively adjusted as needed. For more details about this project, please check out our paper: https://doi.org/10.1002/adma.202304302 Video Credit: Jun Kyu Choe, Ulsan National Institute of Science and Technology (UNIST)