biostudies-literatureKondaveeti SMinistry of Trade, Industry and EnergyNational Research Foundation of Korea12https://www.ebi.ac.uk/biostudies/studies/S-EPMC10957857biostudies-literatureUnknown11(1)Stretchable and self-adhesive conductive hydrogels hold significant importance across a wide spectrum of applications, including human-machine interfaces, wearable devices, and soft robotics. However, integrating multiple properties, such as high stretchability, strong interfacial adhesion, self-healing capability, and sensitivity, into a single material poses significant technical challenges. Herein, we present a multifunctional conductive hydrogel based on poly(acrylic acid) (PAA), dopamine-functionalized pectin (PT-DA), polydopamine-coated reduction graphene oxide (rGO-PDA), and Fe³⁺ as an ionic cross-linker. This hydrogel exhibits a combination of high stretchability (2000%), rapid self-healing (~ 94% recovery in 5 s), and robust self-adhesion to various substrates. Notably,Nano convergenceMussel-inspired resilient hydrogels with strong skin adhesion and high-sensitivity for wearable device.PMC1095785700144157NRF-2021R1A2C3006297Kim SJeong HEChoi GRalph PJKondaveeti SYeo JKuzhiumparambil UKim JLee HJVeerla SCfalseMussel-inspired resilient hydrogels with strong skin adhesion and high-sensitivity for wearable device.Stretchable and self-adhesive conductive hydrogels hold significant importance across a wide spectrum of applications, including human-machine interfaces, wearable devices, and soft robotics. However, integrating multiple properties, such as high stretchability, strong interfacial adhesion, self-healing capability, and sensitivity, into a single material poses significant technical challenges. Herein, we present a multifunctional conductive hydrogel based on poly(acrylic acid) (PAA), dopamine-functionalized pectin (PT-DA), polydopamine-coated reduction graphene oxide (rGO-PDA), and Fe³⁺ as an ionic cross-linker. This hydrogel exhibits a combination of high stretchability (2000%), rapid self-healing (~ 94% recovery in 5 s), and robust self-adhesion to various substrates. Notably,2024-01-01T00:00:00Z2024 Mar2025-04-04T20:07:36.082Z2025-04-04T20:07:36.082ZS-EPMC109578573851258710.1186/s40580-024-00419-4