Advanced Functional Materials, 2026; 36:e76284

Keywords:eutectogels, flexible Sensors, self-strengthening, stress-triggered rearrangement, ultra-robustness

High-performance conductive gels possess exceptional mechanical robustness yet exhibit compromised ductility, conductivity, and self- reinforcement capability, owing to the impeded ion transport and restricted dynamic reconstruction within dense networksThis dilemma is overcome here by a stress-triggered ionic rearrangement strategy that exploits the dynamic reorganization ofmobile ions to decouple ionic conductivity from structural rigidiy. This strategy engineers a network saturated with dispersedfree ions to guarantee superior conductivity independent of structural density, triggers in situ aggregation of these ions intohigh- density ionic cross linking domains upon deformation, and consequently activates a potent self strengthening mechanismthat reaches a maximum of 185% of the initial value. Consequently, this structural evolution translates into an unprecedented convergence of mechanical robustness and functional agility, yielding a tensile strength of 34.58 MPa, an elastic modulus of 77.38 MPa, and a volumetric toughness of 177.3 MJ/m³. Crucially, such extreme mechanical reinforcement is achieved without compromising the dynamic nature, preserving a high extensibility of 644.5% alongside efficient ionic conductivity. Leveraging thisunique material platform, we develop a flexible sensor with a detection limit of 10 µm. The sensor demonstrates precise recognition of diverse physiological activities, from large-scale limb movements to subtle signals such as swallowing, pulse, and respiration.

Yongzhi Liang, Lulu Yin, Zengbai Ouyang, Lingyu Zhao, Jinsong Leng

Stress-Triggered Ionic Rearrangement Produces Self-Strengthening Eutectogels With Decoupled Mechanical Rigidity and Ionic Conductivity.pdf