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首页> 外文期刊>The European physical journal, E. Soft matter >Anisotropic surface melting in lyotropic cubic crystals - Part 2: Facet-by-facet melting at Ia3d/vapor interfaces
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Anisotropic surface melting in lyotropic cubic crystals - Part 2: Facet-by-facet melting at Ia3d/vapor interfaces

机译：溶致立方晶体中的各向异性表面熔化-第2部分：Ia3d /蒸气界面处的逐面熔化

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摘要

From experiments with metal crystals, in the vicinity of their crystal/liquid/vapor triple points, it is known that melting of crystals starts on their surfaces and is anisotropic. Recently, we have shown that anisotropic surface melting occurs also in lyotropic systems. In our previous paper (Eur. Phys. J. E 19, 223 (2006)), we have focused on the case of poor faceting at the Pn3m/L1 interface in C12EO2/water binary mixtures. There anisotropic melting occurs in the vicinity of a Pn3m/L3/L1 triple point. In the present paper, we focus on the opposite case of a rich devil's-staircase-type faceting at Ia3d/vapor interfaces in monoolein/water and phytantriol/water mixtures. We show that anisotropic surface melting takes place in these systems in a narrow humidity range close to the Ia3d-L2 transition. As whole (hkl) sets of facets disappear one after another when the transition is approached, surface melting occurs in a facet-by-facet type.
机译：根据金属晶体的实验，在其晶体/液体/蒸气三点附近，已知晶体的熔化从其表面开始并且是各向异性的。最近，我们已经显示出各向异性表面熔化也发生在溶致体系中。在我们之前的论文（Eur。Phys。J. E 19，223（2006））中，我们集中讨论了C12EO2 /水二元混合物中Pn3m / L1界面刻面不良的情况。在Pn3m / L3 / L1三点附近发生各向异性熔化。在本文中，我们关注单油精/水和植物三醇/水混合物中Ia3d /蒸气界面处丰富的魔鬼-阶梯型刻面的相反情况。我们表明各向异性表面熔化发生在这些系统中，在接近Ia3d-L2转变的狭窄湿度范围内。当接近过渡时，随着整个（hkl）组小平面的相互消失，表面熔化会逐面进行。

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