Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, Department of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China.
Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, Department of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China.
Adv Colloid Interface Sci. 2015 Nov;225:88-97. doi: 10.1016/j.cis.2015.08.005. Epub 2015 Aug 20.
The applications of Atomic Force Microscopy (AFM) on the study of dynamic interactions and film drainage between deformable bodies dispersed in aqueous solutions are reviewed in this article. Novel experimental designs and recent advances in experimental methodologies are presented, which show the advantage of using AFM as a tool for probing colloidal interactions. The effects of both DLVO and non-DLVO forces on the colloid stabilization mechanism are discussed. Good agreement is found between the force - drop/bubble deformation behaviour revealed by AFM measurements and the theoretical modeling of film drainage process, giving a convincing explanation of the occurrence of certain phenomenon. However, the behaviour and shape of deformable drops as they approach or retract is still not well resolved. In addition, when surfactants are present further research is needed on the absorption of surfactant molecules into the interfaces, their mobility and the effects on interfacial film properties.
本文综述了原子力显微镜（AFM）在研究水溶液中可变形体之间的动态相互作用和膜排水的应用。介绍了新颖的实验设计和最新的实验方法进展，展示了将 AFM 用作探测胶体相互作用的工具的优势。讨论了 DLVO 和非-DLVO 力对胶体稳定机制的影响。AFM 测量揭示的力-滴/气泡变形行为与膜排水过程的理论模型之间存在良好的一致性，对某些现象的发生给出了令人信服的解释。然而，当可变形液滴接近或缩回时的行为和形状仍未得到很好的解决。此外，当存在表面活性剂时，需要进一步研究表面活性剂分子进入界面的吸收、它们的迁移性以及对界面膜性质的影响。
