A novel system for measuring liquid flow rates with nanoliter per minute resolution

K. J.A. Westin; C. H. Choi; K. S. Breuer

doi:10.1007/s00348-003-0610-4

A novel system for measuring liquid flow rates with nanoliter per minute resolution

K. J.A. Westin, C. H. Choi, K. S. Breuer

Department of Mechanical Engineering

Brown University

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	635-642
Number of pages	8
Journal	Experiments in Fluids
Volume	34
Issue number	5
DOIs	https://doi.org/10.1007/s00348-003-0610-4
State	Published - May 2003

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AB - 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.

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A novel system for measuring liquid flow rates with nanoliter per minute resolution

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