Fig. 5: Rheology experiments on PNIPAM-grafted rough particles.

a μ as a function of ϕm of the four PNIPAM-grafted rough systems (same legends as Fig. 4c) at 20 °C (blue) and 40 °C (red). μ at 20 °C was calculated from 10 to 30 nN applied load. Error bars in μ and ϕm represent the uncertainties in the calculated slope based on Eq. (1) and the standard deviations from four repeat measurements, respectively. b Rheological flow curves of RB_0.52_PNIPAM in various values of ϕ at 20 °C (blue) and 40 °C (red). c Rheological flow curves of the four PNIPAM-grafted rough systems with ϕ = 63% at 20 °C (blue) and ϕ = 46% at 40 °C (red).