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(a) Shear stress as a function of shear rate for 2.7 wt% sodium alginate cross-linked with 12.5 mM calcium chloride in the absence (red curve) and presence of 5.4 vol% HNTs (violet curve). (b) Log-log dependence of the yield stress on the concentration of cross-linker calcium chloride for 2.7 wt% sodium alginate in the absence of HNTs (cyan squares) and the presence of 5.4 vol% HNTs (red circles). Gray square on the y-axis denotes the yield stress without cross-linker.
