Magneto-thermomechanically reprogrammable mechanical metamaterials

We developed a method enabling a single material system to transform with untethered, reversible, low-powered reprogrammable deformations and shape locking via the application of magneto-thermomechanically triggered prestress on the Shape Memory Polymers (SMPs) and structural instability with asymmetric magnetic torque. The mutual assistance of two physics concepts—magnetic control combined with the thermomechanical behavior of SMPs is demonstrated, without requiring new materials synthesis and high-power energy for reprogramming.

Advanced Materials:  https://doi.org/10.1002/adma.202207349