Drop propulsion in tapered tubes
Name
Bush Drop Propulsion.pdf
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611.93 KB
Format
Adobe PDF
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Author(s)
Renvoise, P.
Bush, John W. M.
Prakash, Manu
Quere, D.
Date Issued
July 2009
Journal
Europhysics Letters
Publisher
European Physical Society by EDP Sciences, IOP Publishing and Società Italiana di Fisica
Citation
P. Renvoisé et al. "Drop propulsion in tapered tubes." Europhysics Letters (2009 )86.6 64003. © 2009 EPLA.
Version
Final published version
Abstract
We present the results of a combined experimental and theoretical investigation of the motion of wetting droplets in tapered capillary tubes. We demonstrate that drops may move spontaneously towards the tapered end owing to the Laplace pressure gradient established along their length. The influence of gravity on this spontaneous motion is examined by studying drop motion along a tilted tube with its tapered end pointing upwards. Provided the tube taper varies, an equilibrium height may be achieved in which the capillary force is balanced by the drop's weight. We deduce the family of tube shapes that support a stable equilibrium.
Description
An Erratum for this article has been published in 2009 EPL 87 39901
MIT Department
Massachusetts Institute of Technology. Center for Bits and Atoms
Massachusetts Institute of Technology. Department of Mathematics
Massachusetts Institute of Technology. Media Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1209/0295-5075/86/64003
