2005/04/30 by Shaun C. Hendy, S. C. Hendy, M. Jasperse +2
Engineering · Physics and Astronomy · #Fluid Dynamics and Thin Films #Microfluidic and Bio-sensing Technologies #Microfluidic and Capillary Electrophoresis Applications #physics.chem-ph #physics.flu-dyn
paper · pdf · doi:10.1103/physreve.72.016303
published as Phys. Rev. E 72, 016303 (2005) · 13 pages, 12 figures, final version for publication
openalex publication_date 2005/07/08 · arxiv created 2005/07/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the flow of a Newtonian fluid in a nano- or microchannel with walls that have patterned variations in slip length. We formulate a set of equations to describe the effects on an incompressible Newtonian flow of small variations in slip and solve these equations for slow flows. We test these equations using molecular dynamics simulations of flow between two walls which have patterned variations in wettability. Good qualitative agreement and a reasonable degree of quantitative agreement is found between the theory and molecular dynamics simulations. The results of both analyses show that patterned wettability can be used to induce complex variations in flow. Finally we discuss the implications of our results for the design of microfluidic mixers using slip.