Figure 7.

Viscosity (η) vs. shear (<a onClick="popup('','MathML',630,470);return false;" target="_blank" href="">View MathML</a>) rate of EG/TiO2 nanofluids at different temperatures. Flow curves for (a) A-TiO2/EG and (b) R-TiO2/EG at 25 wt.% mass concentration and at different temperatures: square, 283.15 K; circle, 293.15 K; triangle, 303.15 K; diamond, 313.15 K; cross mark, 323.15 K. (c) Energy of activation to fluid flow (Ea) vs. shear rate for A-TiO2/EG (filled diamond) and R-TiO2/EG (empty diamond) 25 wt.% nanofluids.

Cabaleiro et al. Nanoscale Research Letters 2013 8:286   doi:10.1186/1556-276X-8-286
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