论文标题

使用实验室来源用于X射线反映液体表面上薄膜的X射线反映的前景

Prospects for the Use of Laboratory Sources for X-ray Reflectometry of Thin Films on a Liquid Surface

论文作者

Asadchikov, Viktor E., Volkov, Yuri O., Nuzhdin, Alexander D., Roshchin, Boris S., Tikhonov, Aleksey M.

论文摘要

作者介绍了对空气界面(水,碱溶液和二氧化硅水合物)宏观平面薄膜结构的系统研究。被考虑的作品的一个共同特征是将独立的方法应用于X射线反射测定数据的分析,该方法不需要对所研究对象的结构进行先验假设。结果表明,在某些情况下,用实验室来源获得的实验结果与使用同步加速器辐射源获得的结果相当。证明了在二氧化硅纳米颗粒胶体溶液表面上自发排序在两亲性有机分子(磷脂)膜中的可重复性。还讨论了通过用碱金属离子富集液体底物来影响磷脂膜原位形成动力学的可能性。

The authors present a review of the systematic studies of the structure of macroscopically planar thin films at the air-liquid interface (water, alkali solution and silica hydrosol). A common feature of the considered works is the application of a model-independent approach to the analysis of X-ray reflectometry data, which does not require a priori assumptions about the structure of the object under study. It is shown that the experimental results obtained with the laboratory source in some cases are qualitatively on par with the results of those obtained with the use of synchrotron radiation source. The reproducibility of the effect of spontaneous ordering in films of amphiphilic organic molecules (phospholipids) at the surface of the colloidal solution of silica nanoparticles is demonstrated. The possibility of influencing the kinetics of the in situ formation of a phospholipid film by enriching the liquid substrate with alkali metal ions is also discussed.

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