“…Here we divide the biological materials into natural and artificial materials and biocompatible and biocompatible/biodegradable materials. The biocompatible natural materials refer to biocompatible materials that can be obtained from human, animal or plant such as silk, − chitosan, ,− cellulose, ,− plants, − gelatin, , polypeptide, , paper, − rice paper, wood, and alginate . Biocompatible artificial materials are materials that have been artificially processed through industrial processing such as polyvinylidene fluoride (PVDF), , polydimethylsiloxane (PDMS), ,,, poly(vinyl alcohol) (PVA), ,, poly(lactic- co -glycolic acid) (PLGA), ,, and polylactic acid (PLA), − poly caprolactone (PCL) .…”