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Phase separation of binary mixtures induced by soft centrifugal fields

Zemb, Thomas ; Rosenberg, Rose ; Marčelja, Stjepan ; Haffke, Dirk ; Dufrêche, Jean-François ; Kunz, Werner ; Horinek, Dominik ; Cölfen, Helmut


We use the model system ethanol-dodecane to demonstrate that giant critical fluctuations induced by easily accessible weak centrifugal fields as low as 2000g can be observed above the miscibility gap of a binary liquid mixture. Moreover, several degrees above the phase transition, i.e. in the one-phase region, strong gradients of ethanol concentration occur upon centrifugation. In this case, the ...


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