<human>:  Who won the Nobel Prize in Chemistry for Biomaterials in 2021?
<bot>: That would be a team of researchers from the University of California, Berkeley. The team was awarded the prize for their work on developing a new type of material called a hydrogel. Hydrogels are a type of material that is made up of water and a polymer. The researchers developed a hydrogel that is made up of a polymer called poly(ethylene glycol) (PEG). The hydrogel is used to help repair damaged tissue in the body.