2020/06/04 by Bei Fan, Fan, B., Prabhakar R. Bandaru +1
Engineering · #Electrowetting and Microfluidic Technologies #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Materials Science (cond-mat.mtrl-sci) #Microfluidic and Bio-sensing Technologies #Microfluidic and Capillary Electrophoresis Applications #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.2006.02592
openalex publication_date 2020/06/04 · openalex created_date 2020/06/12 · openalex updated_date 2026/07/28
A methodology for substantially increasing the magnitude of the electrokinetic streaming potential (Vs) from ~ 0.02 V to as large as ~ 1.6 V is proposed. This is done through deploying textured, liquid-filled surfaces (LFS), filled with low viscosity oils, for electrolyte flow. The charge density at the electrolyte-oil interface as well as the enhanced slip may be responsible for enhancement of the Vs. It was found, through experimental analysis as well as computational simulations, that the fluid slip length was inversely proportional to the filling oil viscosity, and influences the Vs. The study provides new perspectives related to complex electrolyte flow conditions as may be relevant for energy harvesting applications.