Virginia TechMurad, SohailPuri, Ishwar K.2014-04-242014-04-242007-12-01Murad, Sohail; Puri, Ishwar K., "dynamics of nanoscale jet formation and impingement on flat surfaces," Phys. Fluids 19, 128102 (2007); http://dx.doi.org/10.1063/1.27739991070-6631http://hdl.handle.net/10919/47619Molecular-dynamics simulations are used to investigate the formation of water nanojets. The fluid is forced through a nano-orifice to establish a nanojet, which then impinges on a flat surface. The simulations show that to produce jets in the 1 nm diameter range, the orifice surface must be hydrophobic, otherwise the nanojet kinetic energy/inertia may never be able to overcome the attractive forces of the surface to form a jet. In addition, for the nanojet to form a stable liquid film on the surface of impingement, the surface cannot be either hydrophobic or too hydrophilic. Finally the stability/formation of the nanojet is not sensitive to the orifice surface temperature. The same physical laws that govern flows at the micro- and macroscales adequately describe nanojet flows in the absence of strong interfacial forces.application/pdfen-USIn CopyrightMembranesWaterArticle - Refereedhttp://scitation.aip.org/content/aip/journal/pof2/19/12/10.1063/1.2773999https://doi.org/10.1063/1.2773999