EFFECT OF NANOSTRUCTURES AND ELECTROSTATIC INTERACTIONS ON MENISCUS SHAPE AND DISJOINING PRESSURE OF THIN LIQUID FILMSHan Hu DOI: 10.1615/TFESC1.fnd.012778 键词 Disjoining pressure, meniscus shape, nanostructured surfaces, electrostatic interactions, molecular dynamics 摘要A general model of meniscus shape and disjoining pressure for thin liquid films on nanostructured surfaces with both van der Waals and electrostatic interactions accounted for is developed based on the minimization of free energy, the Derjaguin approximation and the DLVO theory. This model is then verified with molecular dynamics simulations for a water-alumina system with square nanostructures of varying depth and film thickness. Electrostatic interactions are shown to enhance the disjoining pressure effect. The meniscus shape becomes more conformal with increasing nanostructure depth and decreasing film thickness. The disjoining pressure effect is enhanced with nanostructure depth and this effect weakens as film thickness increases. |
主页 | 旧刊 | 有关人员 | 未来大会 | American Society of Thermal and Fluids Engineering |