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. 2015 Nov 24;5:17017. doi: 10.1038/srep17017

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(a) Variation in ΔP_max plotted as a function of microgel diameter D₀. d_c = 43 ± 2 μm. Microgels with Young’s modulus of 2.57 kPa (circle symbols), 8.26 kPa (square symbols), 12.54 kPa (diamond symbols) and 20.21 kPa (triangle symbols) (corresponding to agarose concentration in the microgel of 2, 3, 4 and 5 wt%, respectively) were tested in the constriction with the entrance angle α = 15°. (b) Log-log plot of the master curves describing the relationship between ΔP_max/E₀ and the degree of microgel confinement D₀/d_c in microchannels with different entrance angles α. Solid lines are the theoretical results obtained from equation (7) with a slope 14/3. Microgels with Young’s moduli (denoted as in (a)) were tested in constrictions with the entrance angles α of 15° (blue color), 45° (red color), and 60° (green color).