Figure 1.
SEM images of the top view of the printed channels. Ca–C, Ca–H, and Ca–CH denote pastes containing CaCO3–CNF (95:5), CaCO3–HefCel (95:5), and CaCO3–CNF–HefCel (95:2.5:2.5), respectively. Additionally, CaP–C, CaP–H, and CaP–CH denote pastes containing CaCO3–perlite–CNF (85:10:5), CaCO3–perlite–HefCel (85:10:5), and CaCO3–perlite–CNF–HefCel (85:10:2.5:2.5), respectively. Scale bar: 40 μm.