We report the first light-scattering study of a critical mixture (aniline-cyclohexane) under shear flow S which affects critical fluctuations with relaxation time τ only in the region Sτ>1. All anomalies can be expressed as a function of Sτ only and can be interpreted by a lowering of the critical temperature ΔT₀(S)=T₁S^13ν, where T₁ is a constant. In addition the scattered light is found to exhibit a noticeable anisotropy with respect to the flow direction.
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Beysens et al. (1979) studied this question.