Greenwood Taylor E, Elder Brian, Hasan Md Nahid, Anklam Jared, Lee Saebom, Teng Jian, Wang Pai, Kong Yong Lin
Department of Mechanical Engineering, Rice University, Houston, TX 77005, USA.
Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
Sci Adv. 2025 Jul 18;11(29):eadu3749. doi: 10.1126/sciadv.adu3749. Epub 2025 Jul 16.
The wireless actuation of magnetic soft architectures can enable complex functionalities important in biomedicine and soft robotics. However, transforming and maintaining a device's desired geometry without a sustained energy input remains challenging, especially where environmental stresses can be unpredictable. Here, we create a soft multistable magnetic-responsive metamaterial with programmable energy barriers enabled by a bistable geometry made entirely from soft material. The multistability and magnetic programming enable the soft metamaterials to reversibly transform between stable states, even under mechanical and thermal stresses that far exceed physiological conditions. In addition, the metamaterials can sustain compressive loads more than 10 times their mass, achieve shape reconfiguration in remote and confined spaces, and wirelessly deliver fluids against pressure, suggesting a broad range of future biomedical and soft robot applications.
磁性软结构的无线驱动能够实现生物医学和软机器人领域中重要的复杂功能。然而，在没有持续能量输入的情况下，转变并维持设备所需的几何形状仍然具有挑战性，尤其是在环境应力可能不可预测的情况下。在此，我们创建了一种软多稳态磁响应超材料，其具有可编程的能量势垒，该能量势垒由完全由软材料制成的双稳态几何结构实现。这种多稳态性和磁编程使软超材料能够在稳定状态之间可逆地转变，即使在远远超过生理条件的机械和热应力下也是如此。此外，这些超材料能够承受超过其质量10倍以上的压缩载荷，在远程和受限空间中实现形状重构，并在有压力的情况下无线输送流体，这表明其在未来生物医学和软机器人领域具有广泛的应用前景。
