Title: Environmentally Robust Ionic Hydrogel for Pressure-Temperature Bimodal Tactile Perception

 (1) Journal: 

Advanced Functional Materials

 (2) Manuscript Title: 

A High Environmentally Stable Ionic Hydrogel for Pressure-Temperature Bimodal Passive Flexible Tactile Sensor 

(3) Research Concept: 

Targeting the poor environmental stability and mutual coupling of multi-sensing signals of ionic hydrogel-based flexible tactile sensors, this work constructs a multi-component synergistic ionic hydrogel system to achieve freeze resistance, water retention, and passive pressure-temperature bimodal perception.

 (4) Material Development:

 1) Material: PPGIL-TCPs ionic hydrogel consisting of PVA/PEG network, ionic liquid, glycerol and thermochromic microcapsules; 

 2) Functions: Outstanding environmental stability, passive simultaneous pressure and temperature detection, and tactile trajectory recognition via sensor arrays for flexible interactive devices.

Flexible Tactile Sensor｜Bimodal Perception of Ionic Hydrogel Flexible electronic skin serves as a key component for soft robotics and human-machine interaction. Conventional ionic hydrogel sensors suffer from limited environmental tolerance and signal crosstalk. This work develops a multi-component synergistic ionic hydrogel integrating freeze resistance, water retention and passive pressure-temperature bimodal response. Pressure is readout via electrical signals while temperature is visualized by thermochromism. 

The sensor array can recognize pressing trajectories, showing promise for intelligent prostheses, humanoid robots and human-machine interfaces.

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17768014569 (Dr.Gao)

17761925168 (Dr. Zhang)

18013729810 (Dr. Yang)