👉 Hydrogels are a type of polymer that exhibits excellent mechanical and thermal properties. They consist of a continuous network of water molecules, which can be in various shapes and sizes depending on their molecular weight and structure. The hydrogel is often used as a substitute for biological tissue or cells in medical applications due to its biocompatibility and potential for tissue engineering. Hydrogels are typically characterized by their ability to stretch, swell, and contract under the action of water, which makes them useful