A Multifunctional Skin-Like Sensor Based on a Printable and Thermo-Responsive Hydrogel
Zhouyue Lei, Quankang Wang, and Peiyi Wu*. A Multifunctional Skin-Like Sensor Based on a Printable and Thermo-Responsive Hydrogel. Mater. Horiz. 2017, 4, 694-700.
This work was highlighted by Materials Horizons Blog, "A skin-like sensor based on a stimuli-responsive hydrogel".
An effective and general strategy is developed to prepare a multifunctional and mechanically compliant skin-like sensor by incorporating a 3D printed thermo-responsive hydrogel into a capacitor circuit. The prepared intelligent skin shows a sensitive and stable capacitance–temperature response, and also exhibits very high pressure sensitivity within 1 kPa, allowing it to sense body temperature, gentle finger touches and finger bending motion. This work not only demonstrates that stimuli-responsive hydrogels are promising candidates for artificially intelligent skins, but might also enrich the design of skin-like sensors for future artificial intelligence, wearable devices and human/machine interaction applications.