Inorganic chemistry Chemistry 997 QD1-999 992 General. Including alchemy 986 Q 986 QD1-65 986 QD146-197 986 more ... Science 986 hydrogel 130 hydrogels 93 drug delivery 43 chitosan 42 rheology 38 tissue engineering 32 gel 29 alginate 24 self-assembly 23 n/a 21 3D printing 19 gels 19 nanoparticles 19 swelling 19 adsorption 17 mechanical properties 17 aerogel 16 wound healing 16 sodium alginate 15 biomaterials 14 organogel 14 sol-gel 14 less ...