Off-Critical Quenched Phase Separation Dynamics of Vacancy-Mediated Water-Oil-Amphiphile Systems : Condensed Matter: Structure, etc.

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概要

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• We introduce vacancy-mediated diffusion mechanism to consider the effect on the phase separation kinetics of water-in-oil microemulsions. It is found that the vacancy plays different roles at low and high quench temperatures, due to the competition between the vacancy-mediated segregation dynamics and the reduction of driving force for the phase separation. For deep quench case, vacancies prefer to locate at interfaces and speed up the phase separation by increasing the atomic diffusions at interfaces. As the quenched temperature is increased, vacancy-mediated diffusion process is gradually balanced by the reduction of interfacial tension because a large amount of vacancies immigrates inside the bulk of phase. On the contrary, all the amphiphile molecules are still adsorbed onto interfaces and is not sensitive to the temperature change be-cause the entropy change is small compared with the strong interface energy change induced by the chain properties of the amphiphiles.

• 社団法人日本物理学会の論文
• 2000-08-15

著者

• Ma Yu-qiang

  National Laboratory Of Solid State Microstructures Nanjing University

• Liu Ji-wen

  National Laboratory Of Solid State Microstructures Nanjing University

関連論文

• Exchange Coupling Effect in Magnetic Trilayer Systems with Perpendicular Anisotropic Interlayer : Magnetism
• Phase Separation in Ternary Mixtures : Condensed Matter: Structure, etc.
• Off-Critical Quenched Phase Separation Dynamics of Vacancy-Mediated Water-Oil-Amphiphile Systems : Condensed Matter: Structure, etc.

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