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(a) 3D printed GO structure, (b) “a” dried 24 h in air; (c) Comparison of structures obtained after treatment at 1200 °C from GNP, GO and mix compositions; (d) Storage (G′) and loss (G″) moduli versus shear stress for the three inks: GO, GNP and mix. Reproduced from [211], with permission from Elsevier, 2019.
