Synergistic double‐doped elastic composites for durable, ultra‐flexible sign language translation sensors

Abstract People with hearing disabilities often struggle to benefit from technological advancements, finding themselves confined to isolated circles of sign language communication. To address this issue, we have developed a wearable device that translates sign language into speech, facilitating communication between deaf individuals and the wider community. We employed a special treatment and dispersion method to uniformly double‐dope Super‐P (SP) and graphene in styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene (SEBS), constructing a three‐dimensional conductive network akin to nerve cells and glial cells through their synergistic effect. This ultra‐flexible elastic stress sensor exhibits high sensitivity and responsiveness, along with excellent cyclic stability due to uniform doping. It demonstrated no significant signal shift after more than 2000 cycles of tensile release at 60% strain. Thanks to the material's exceptional performance, the device can recognize and reproduce movements in less than a second, simultaneously converting sign language input into corresponding speech. Designed with cost‐effectiveness in mind, the prototype utilizes affordable materials, electronic components, and manufacturing processes, making it suitable for mass production. Highlights Uniform double‐doping of SP and graphene in SEBS creates a 3D conductive network. Unique treatment and dispersion methods enhance composite elastomer performance. Ultra‐flexible sensor shows high sensitivity and stability over 2000 cycles at 60% strain. Device translates sign language to speech in under one second. Cost‐effective design using affordable materials suitable for mass production.