Presentation Information
[24p-1BC-13]A Dual-Sensor System for Comprehensive Direction and Strain Recognitions
〇(DC)Yue Qin1, Yan Xuan1, Kuniharu Takei1 (1.Hokkaido Univ.)
Keywords:
strain sensor,direction detection
The development of high-accuracy, direction-sensitive strain sensors is essential for precisely monitoring intricate movements across body parts. Conventional sensor materials often lack the capacity to discern force direction, necessitating complex structures for comprehensive detection. Here, a simplified directional strain sensor using laser-induced graphene (LIG) sensor materials, stretchable silver electrodes, and thermoplastic polyurethane (TPU) substrates was demonstrated. The LIG's wrinkled structures induced by laser scribing enable sensitive electrical responses under diverse stretching directions and strains.The LIG and the stretchable electrodes were embedded into the TPU substrates to form a dual-sensor system, achieving direction recognition from 0° to 180° (in 30° increments) at a 30% strain ratio. A 45° laser scanning direction further enhances LIG's directional sensitivity. Meanwhile, stretchable silver electrodes exhibit stability up to a 200% strain, minimizing electrical interference during stretching. This stable sensor is used to investigate angle dependencies for distinguishing stretching direction and strain. In summary, our structurally simple dual-sensor system, combining LIG with stretchable silver electrodes, achieves accurate direction and strain recognition. This sensor holds promise for assessing physical exercise in sports and health monitoring, including evaluating cervical vertebra diseases.