Research on robotic fingers based on flexible humanoid skin array sensors

With the rapid advancements in artificial intelligence and flexible electronics, the demand for high-performance sensors in robotics, electronic skin, and intelligent healthcare is escalating. Traditional rigid sensors face limitations in adaptability, softness, and multi-modal perception, making them unsuitable for dynamic and complex environments. Additionally, flexible sensors made from novel composite materials often struggle with issues like high manufacturing costs, complex production processes, and challenges in balancing sensitivity with a wide measurement range. To overcome these barriers, this study proposes an array-type flexible tactile sensor that combines a low-cost, reliable, and scalable design. By incorporating a cross-arranged conductive rubber structure and a high-sensitivity interval relay strategy, the sensor achieves a balanced performance across low-pressure and medium-to-high-pressure ranges. Furthermore, the integration of an intermediate support layer and flexible circuit boards enables a zero-power standby mode, enhancing durability, reducing costs, and supporting scalability for mass production. This research presents a significant step forward in the development of flexible tactile sensors for advanced robotics and intelligent systems.