Abstract:
We have performed small angle neutron scattering experiments on the binary fluid mixture n-C6H14+n-C8F18 imbibed inside porous Vycor glass in the thermodynamic region corresponding to the bulk critical one. The resulting structure can be represented as the sum of a temperature dependent Lorentzian term and a term describing the interference between the porous matrix, a shell part richer in one component coating the glass surface, and a core part richer in the other component. We observe critical fluctuations extending over distances markedly larger than the mean pore size.
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Received 20 May 1999
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Formisano, F., Teixeira, J. Critical fluctuations of a binary fluid mixture confined in a porous medium. Eur. Phys. J. E 1, 1–4 (2000). https://doi.org/10.1007/s101890050001
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DOI: https://doi.org/10.1007/s101890050001