Smart gel is a type of smart material.
Smart gel is a functional material that actively changes its volume and properties (hydrophilicity/hydrophobicity) in response to changes in external environments such as temperature, pH, light, and electric fields. They have been suggested for applications such as temperature-responsive recovery of moisture from the air as water, drug delivery systems, and medical biocompatible patches.
See also Smart polymer Programmable matter Sensors Actuators Artificial muscles Thermally induced shape-memory effect (polymers) Covalent adaptable networks / Vitrimers
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