Physical Chemistry, Chemnitz University of Technology, Chemnitz 09111, Germany.
Adv Mater. 2013 Jan 11;25(2):278-83. doi: 10.1002/adma.201201812. Epub 2012 Oct 11.
Mixtures of suitable small particles, large particles and an "oil", spontaneously form mixed layers on a water surface. In these layers the small particles adhere to the upper interface while the large particles adhere to the lower interface. Solidification of the "oil" by photopolymerization, followed by removal of the particles yields asymmetric, hierarchical membranes with microsieve-like parts.
合适的小颗粒、大颗粒和“油”的混合物会在水面上自发形成混合层。在这些层中，小颗粒附着在上界面，而大颗粒附着在下界面。通过光聚合使“油”固化，然后去除颗粒，得到具有微筛状部分的不对称分级膜。
