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Typical tensile-strain curves of the DN hydrogel microfibers including controls without CB[n], with CB[7], and with a pure agar fiber, leading to nominal stress (a) and true stress (b) plots (deformation rate, 100 mm min–1). True strain is defined as σtrue = σnominal(1 + λ). (c) Summary of Young’s moduli, fracture stress and fracture strain for each hydrogel microfiber sample. (d) Manual stretching of an agar/CB[8] DN hydrogel microfiber sample (i) by 10× (ii).
