An experimental system for liquid flow-rate measurements of pressure-driven flow through micro-channels is described. The displacement of a meniscus is tracked in a precision borehole using a laser distance meter mounted on a feed-back controlled traversing stage. Successful measurements of flow rates as small as 30 pl/s are reported when using non-evaporative hexadecane, and evaporative fluids such as ethanol are measured at flow rates of 0.1 nl/s. The set-up can also be used for measurements in time-dependent flows. Finally, a discussion of the influence of dissolved nitrogen on the measured flow rates is given.
CITATION STYLE
Westin, K. J. A., Choi, C. H., & Breuer, K. S. (2003). A novel system for measuring liquid flow rates with nanoliter per minute resolution. Experiments in Fluids, 34(5), 635–642. https://doi.org/10.1007/s00348-003-0610-4
Mendeley helps you to discover research relevant for your work.