Lippmann Milena, Seeck Oliver H, Ehnes Anita, Nygård Kim, Bertram Florian, Ciobanu Anca
Deutsches Elektronen-Synchrotron DESY , Notkestraße 85 , 22607 Hamburg , Germany.
MAX IV Laboratory , Lund University , Fontongatan 2 , 22484 Lund , Sweden.
J Phys Chem Lett. 2019 Apr 4;10(7):1634-1638. doi: 10.1021/acs.jpclett.9b00331. Epub 2019 Mar 26.
Films of carbon tetrachloride (CCl) confined in slit geometry between two flat diamond substrates down to a few tens of Angstroms are studied by combining X-ray reflectivity with in-plane and out-of-plane X-ray scattering. The confined films form a heterogeneous structure with coexisting regions of liquid and crystalline phases. The liquid phase shows short-range ordering normal to the surfaces of the substrates. The experiments directly show the ability of the confinement to induce crystal objects, which is a long-discussed issue in the literature. The surface structure and morphology of the substrates may influence the actual realization of the crystalline phase in confinement.
通过将X射线反射率与面内和面外X射线散射相结合，研究了在两个平面金刚石基板之间的狭缝几何结构中限制在几十埃以下的四氯化碳（CCl）薄膜。受限薄膜形成了具有液相和结晶相共存区域的非均匀结构。液相在垂直于基板表面的方向上表现出短程有序。实验直接表明了限制诱导晶体物体的能力，这是文献中长期讨论的一个问题。基板的表面结构和形态可能会影响受限条件下结晶相的实际形成。
