Reply to the comment from Ikeda, Berthier, and Sollich (IBS)

Abstract

We thank IBS for their comments which question our interpretation of the universal viscosity divergence near the flow-arrest transition in constant stress and pressure rheology of hard-sphere colloidal suspensions [2]. IBS introduced two Péclet numbers: Pe_0 = ẏ_ɑ^2=d0 and Pe = ẏ_ɑ^2/d(φ), with ẏ the strain rate, ɑ the particle size, d0 the isolated single-particle diffusivity and d_0 the long- time at-rest self-diffusivity, and considered three regimes: (i) Pe_0 < Pe ≪ 1, (ii) Pe_0 ≪ 1 ≪ Pe, and (iii) 1 ≪ Pe_0 < Pe.

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