ARTICLE
Liquid bridge in slit pore geometry
| 1 | College of Physics Science and Technology, Guangxi Normal University, Guilin, China |
CORRESPONDING AUTHOR
Submission date: 2020-05-21
Final revision date: 2020-09-20
Acceptance date: 2020-10-18
Online publication date: 2020-12-02
Publication date: 2021-01-15
Journal of Theoretical and Applied Mechanics 2021;59(1):135–142
KEYWORDS
TOPICS
ABSTRACT
In this work, the morphology of a liquid bridge in a slit pore geometry was investigated as a
function of both the bridge height and aspect ratio (height/width). The end contour interface
of the liquid bridge was modeled by using a saddle shape, and the liquid-air interface was
described via an arc of a circle. By employing the free energy approach, a simple formula was
obtained to predict variation of the pinning angle as a function of the distance between the
slits. The pinning angle depended on the liquid volume and on both the wetting properties
and the geometry of the system (height and width). The critical aspect ratio at which the
liquid bridge meniscus transitioned from concave to convex was determined. The calculations
were in good agreement with the experimental data. The morphology of the liquid bridges
in a slit pore geometry can be used in various fields such as the packaging of electronic and
micro-electromechanical systems.
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