Bioinspired Sinusoidal Corrugation for High‐Performance Motion Sensing in Wearable Human‐Machine Interfaces

Nature employs corrugated architectures to redistribute strain and maintain mechanical compliance during large deformations, an attractive approach for robust sensing in wearable and human‐robot interactive systems. Here, we report a bioinspired sinewave‐corrugated‐structure (SCS) flexible sensor that uses a sinusoidal geometry to homogenize strain along the active layer, thereby improving elasticity and mitigating localized stress concentration. Benefiting from this structural design, the SCS sensor achieves a balanced sensing profile, combining high strain sensitivity (a maximum gauge factor of 3.41, 40%–60% strain range), rapid response (0.475 s), low hysteresis (0.05), and long‐term cycling stability (over 12 000 cycles). We further demonstrate its utility for intelligent‐interface scenarios, including continuous body‐motion monitoring, real‐time Morse‐code input, and human‐robot interaction, illustrating reliable signal acquisition across diverse deformation modes. These results underscore how bioinspired corrugation geometries can serve as an effective structural route toward durable, high‐performance motion sensors for next‐generation intelligent wearable and robotic systems.