Bioinspired, Rapidly Responsive Magnetically Tunable Stiffness Metamaterials.

ABSTRACT: Programmable mechanical materials often require dynamic stiffness adaptability, but existing solutions face challenges with slow response times and limited precision. This study introduces magnetically tunable stiffness metamaterials (MTSM) that utilize a bioinspired ternary programming framework to achieve rapid and precise stiffness modulation. Drawing inspiration from biological sarcomeres, which naturally adjust stiffness through structural changes, the MTSM design employs direct ink writing, a 4D printing method, to incorporate neodymium microparticles and a styrene-isoprene-styrene polymer matrix. This approach enables the metamaterial to transition between three distinct stiffness states-soft, moderate, and stiff-through structural deformation controlled by magnetic torque. Integrat

SUBMITTER: Chung G 

PROVIDER: S-EPMC12392855 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature