Eutectic gels: Presentation and prospect

The optimization of conductive hydrogels, pivotal components in wearable devices, has garnered significant attention from researchers worldwide. Utilizing deep eutectic solvents (DES), the emergence of novel soft materials known as conductive gels has gained traction due to their cost-effectiveness, non-volatility, non-toxicity, and exceptional biocompatibility. However, a comprehensive understanding of their characteristics, preparation methods, and application potential is needed to fully harness these benefits. This review begins by contrasting the technical specifications of eutectic gels and delineating key performance parameters to encapsulate their properties. Subsequently, it delves into the preparation methods and structural design classifications of eutectic gels, evaluating the advantages and drawbacks of various structural types. Finally, it outlines the primary application domains and scenarios of eutectic gels, highlighting certain deficiencies while envisioning their future developmental prospects.