Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 4, 2015
Previous Article Next Article

Characterization of syringe-pump-driven induced pressure fluctuations in elastic microchannels

Author affiliations

Abstract

We study pressure and flow-rate fluctuations in microchannels, where the flow rate is supplied by a syringe pump. We demonstrate that the pressure fluctuations are induced by the flow-rate fluctuations coming from mechanical oscillations of the pump motor. Also, we provide a mathematical model of the effect of the frequency of the pump on the normalized amplitude of pressure fluctuations and introduce a dimensionless parameter incorporating pump frequency, channel geometry and mechanical properties that can be used to predict the performance of different microfluidic device configurations. The normalized amplitude of pressure fluctuations decreases as the frequency of the pump increases and the elasticity of the channel material decreases. The mathematical model is verified experimentally over a range of typical operating conditions and possible applications are discussed.

Graphical abstract: Characterization of syringe-pump-driven induced pressure fluctuations in elastic microchannels

Back to tab navigation

Publication details

The article was received on 12 Nov 2014, accepted on 17 Dec 2014 and first published on 24 Dec 2014


Article type: Paper
DOI: 10.1039/C4LC01347F
Author version
available:
Download author version (PDF)
Citation: Lab Chip, 2015,15, 1110-1115

  •   Request permissions

    Characterization of syringe-pump-driven induced pressure fluctuations in elastic microchannels

    W. Zeng, I. Jacobi, D. J. Beck, S. Li and H. A. Stone, Lab Chip, 2015, 15, 1110
    DOI: 10.1039/C4LC01347F

Search articles by author

Spotlight

Advertisements