Nanocomposite conductive tough hydrogel based on metal coordination reinforced covalent Pluronic F-127 micelle network for human motion sensing

Recent progress of antibacterial hydrogels in wound dressings

“…Inorganic metal ions (Ag, Zn, Au, Cu, Mg) and their metal oxide nanoparticles exhibit a broad spectrum of antibacterial properties. Although the cytotoxicity and long-term retention of metal-based biomaterials in the body are pending a comprehensive solution, metal-based composite antibacterial hydrogels are still a hot topic for antibacterial biomaterials research [ [189] , [190] , [191] , [192] ]. Metal or metal oxide particles can combine with active enzymes in bacteria to directly attack active substances such as DNA and proteins in bacterial cells and the reactive oxygen species produced cause oxidative stress to bacteria, eventually leading to bacterial death.…”

Conductive hydrogels for tissue repair

“…Due to the excellent performance of CHs in biosensors, some CHs with real-time detection of the wound physiological state have also been developed. An obvious example is that the resistance of the CHs applied to the human body changes with tissue movement 25,122,[170][171][172] or temperature changes. 16,36,173 For example, in a small pressure strain range, the pressure sensitivity of a hydrogel based on a polyvinyl alcohol/acrylamideionic liquid is as high as 9.18 kPa −1 .…”

A stretchable, environmentally stable, and mechanically robust nanocomposite polyurethane organohydrogel with anti-freezing, anti-dehydration, and electromagnetic shielding properties for strain sensors and magnetic actuators

“…1,2 However, conventional hydrogels usually suffer from poor mechanical performance due to the in-homogeneous cross-linking structure, severely restricting their stable operation under sudden external force impacts. 3,4 Furthermore, when the ambient temperature drops below the freezing point, the water in the hydrogel matrix would inevitably be frozen. Therefore, the ion transport ability, exibility, and stretchability of the hydrogels will degenerate, seriously impeding their further practical applications at extremely low temperatures.…”