TABLE 1.

Recently developed nanocomposite hydrogels.

Classification	Components	Features	Applications
Magnetic	Fe3O4	Superparamagnetic Low toxicity Biocompatibility Biodegradability	Tissue regenerative Ghuman et al. (2018) Antimicrobial therapy Abenojar et al. (2018) Drug delivery Amini-Fazl et al. (2019)
Conductive	Gold nanoparticle Silver nanoparticles Graphene dots Carbon nanotubes Conductive Polymers	High electrical conductivity High viscoelasticity Electrochemical redox	3D cell cultures Xu Y. et al. (2019) Biosensors Uluturk and Alemdar (2018) Neurogenesis Wu C. et al. (2019) Drug delivery An et al. (2020)
Light emitting	Carbon dots Riboflavin Rhodamine B	Optical tenability High sensitivity Dynamic detection	Tissue regeneration Chichiricco et al. (2018) Drug delivery Javanbakht and Namazi (2018)