<p>➀ Researchers from the University of Science and Technology of China (USTC) have developed a lightweight prosthetic hand with 19 degrees of freedom (DOF), mimicking human hand functions.</p><p>➁ The prosthetic hand uses shape-memory alloys (SMA) with high power-to-weight ratios as artificial muscle actuators and includes 23 sensor units for precise joint control.</p><p>➂ The prosthetic hand also features integrated voice recognition technology, supporting 60 languages and 20 dialects with a recognition accuracy of 95% and a response time in milliseconds.</p>