Is a hydrogel a smart polymer/stimuli-responsive polmer?​

Polymer scientists have been trying to mimic this behavior by creating so called smart polymers. ... One of the most important classes of stimuli-responsive polymers used for controlled drug delivery is crosslinked polymer networks, e.g., hydrogels and microgels.
Hopefully this helps if not I’ll try rewriting it

A1 a 2 a 3 ooh lol i think that's it