Critical fluctuations of a binary fluid mixture confined in a porous medium
Critical fluctuations of a binary fluid mixture confined in a porous medium
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多孔介质中二元流体混合物的临界波动
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
J. Teixeira
中科院分区：
文献类型：
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作者：
F. Formisano;J. Teixeira
翻译后摘要：我们已经进行了小角中子散射实验的二元流体混合物n-C6 H14 + n-C8 F18吸胀内多孔Vycor玻璃在热力学区域对应的散装临界。所得到的结构可以表示为温度依赖性洛伦兹项和描述多孔基质之间的干涉的项的总和，所述多孔基质是富含涂覆玻璃表面的一种组分的壳部分和富含另一种组分的芯部分。我们观察到的临界波动延伸的距离明显大于平均孔径。
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.