Light scattering was used to study the influence of a shear S on the critical fluctuations (lifetime τ) of a binary fluid (cyclohexane-aniline). For the first time we experimentally show that in the region Sτ > 1 (i) the critical temperature is actually changed ΔT c(S) ∝ S0.53±0.03 and (ii) the susceptibility measured in the flow direction crosses over to a mean-field behavior. These points confirm both the reduction and the anisotropy of the fluctuations induced by the shear.
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Beysens et al. (1979) studied this question.
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