The soft matter mechanics team at Beijing Institute of Technology (BIT) has recently made a significant advancement in the realm of mechanical metamaterials. Their groundbreaking research, titled "Stability-Enhanced Variable Stiffness Metamaterial with Controllable Force-Transferring Path," has been published in the prestigious international journal Advanced Functional Materials and has been featured as the cover article for the current issue. The primary author of this paper is Yi Jixuan, a 2020 master's degree candidate from BIT's School of Aeronautics and Astronautics.

This research addresses critical issues such as structural irregularity, eccentricity, and manufacturing defects commonly encountered in traditional metamaterials. The team has introduced a metamaterial with an innovative eccentric unit design, which offers stable stiffness variation and remarkable load-bearing capacity. Under varying load conditions, the stiffness variation range can extend to approximately 110 times, with a load-bearing capacity exceeding 1500N.

Furthermore, this metamaterial holds promise for diverse applications. It can be tailored for mechanical protection of human joints and facilitate information conversion functions for remote adjustment of mechanical input signals. These attributes present promising solutions for potential use in aerospace engineering, medical devices, and robotics technology.