The integration of liquid metals into conductive hydrogels has long been hindered by particle instability and coalescence. Researchers from Fuzhou University have developed a novel stabilization strategy using gelatin to create a highly uniform, conductive, and stretchable hydrogel. This "electronic skin" not only monitors human motion with high sensitivity but also utilizes deep learning for real-time handwriting recognition and harvests solar energy via photothermal conversion.

Wearable electronics capable of sensing, processing, and storing information usually require multiple components, which increases size and complexity. Now, researchers from Korea have developed a stretchable organic electrochemical transistor that can be switched between distinct digital and analog memory operational modes by simply changing the electrolyte’s salt concentration. The transistor also changes color to visually reveal its operating state, opening new possibilities for adaptive wearable bioelectronics, advanced prosthetics, and neuromorphic devices.