Printable, Soft and Stretchable Conductor-Based Sensors for Human Body Interface

Soft and stretchable electronics have garnered significant attention owing to its wide range of applicability. The versatility of this technology has resulted in its utilization across multiple fields, such as soft robotics, skin-integrated electronics, biomedical devices, flexible displays, and human-machine interfaces. Here we present a hybrid material based on hydrogel and metal particles that simultaneously possesses high conductivity, stretchability, tissue-level modulus (<10 kPa), as well as 3D printability. This novel material was further applied to develop devices that can interact with the human body for motion sensor and EMG signal acquisition device, demonstrating huge potential for sensors and biomedical devices.