Nieto Simavilla David, Huang Weide, Housmans Caroline, Sferrazza Michele, Napolitano Simone
Laboratory of Polymer and Soft Matter Dynamics, Faculté des Sciences, Université libre de Bruxelles (ULB), CP223, Boulevard du Triomphe, Bruxelles 1050, Belgium.
Department of Physics, Faculté des Sciences, Université libre de Bruxelles (ULB), Boulevard du Triomphe, Bruxelles 1050, Belgium.
ACS Cent Sci. 2018 Jun 27;4(6):755-759. doi: 10.1021/acscentsci.8b00240. Epub 2018 Jun 5.
The interaction between two immiscible materials is related to the number of contacts per unit area formed by the two materials. For practical reasons, this information is often parametrized by the interfacial free energy, which is commonly derived via rather cumbersome approaches, where properties of the interface are described by combining surface parameters of the single materials. These , however, neglect any effect that geometry might have on the strength of the interfacial interaction. In this Article, we demonstrate that the number of contacts at the interface between a thin polymer coating and its supporting substrate is altered upon confinement at the nanoscale level. We show that explicitly considering the effect of nanoconfinement on the interfacial potential allows a quantitative prediction of how sample geometry affects the number of contacts formed at the interface between two materials.
两种互不相溶材料之间的相互作用与这两种材料形成的单位面积接触数有关。出于实际原因，此信息通常由界面自由能参数化，而界面自由能通常通过相当繁琐的方法得出，在这些方法中，界面的性质是通过组合单一材料的表面参数来描述的。然而，这些方法忽略了几何形状可能对界面相互作用强度产生的任何影响。在本文中，我们证明了薄聚合物涂层与其支撑基板之间界面处的接触数在纳米尺度受限情况下会发生改变。我们表明，明确考虑纳米限域对界面势的影响，可以定量预测样品几何形状如何影响两种材料之间界面处形成的接触数。
