Fast Liquid Transfer between Surfaces: Breakup of Stretched Liquid Bridges

Chen, H.; Tang, Tian; Amirfazli, Alidad

doi:10.1021/acs.langmuir.5b03292

Cited by 40 publications

(27 citation statements)

References 22 publications

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“…here V . 2 mm s 21 ), the liquid gets evenly distributed between the plates [46]. As seen in figure 19, all the motions involved in detachment have a corresponding Ca .…”

Section: Discussionmentioning

confidence: 93%

Multi-scale tarsal adhesion kinematics of freely-walking dock beetles

Gernay

Labousse

Lambert

et al. 2017

J. R. Soc. Interface.

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In this experimental study, living dock beetles are observed during their free upside-down walk on a smooth horizontal substrate. Their weight is balanced by the adhesion of hairy structures present on their tarsomeres. The motions involved in the attachment and detachment of these structures were characterized by simultaneously imaging the beetle from the side at the body scale, and from the top at the scale of a single tarsal chain. The observed multi-scale three-dimensional kinematics of the tarsi is qualitatively described, then quantified by image processing and physically modelled. A strong asymmetry is systematically observed between attachment and detachment kinematics, in terms of both timing and directionality.

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“…here V . 2 mm s 21 ), the liquid gets evenly distributed between the plates [46]. As seen in figure 19, all the motions involved in detachment have a corresponding Ca .…”

Section: Discussionmentioning

confidence: 93%

Multi-scale tarsal adhesion kinematics of freely-walking dock beetles

Gernay

Labousse

Lambert

et al. 2017

J. R. Soc. Interface.

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“…This restriction limits the minimum dispensed-drop size that can be achieved by increasing the retraction speed. In contrast, the dispensed-drop size monotonically decreased with increasing U n in the range of Ca and Re studied by Chen et al 38 . Nevertheless, CAH effects on the stability and dynamics of liquid bridges in contact-drop dispensing have not been fully understood in the literature.…”

mentioning

confidence: 80%

“…Dodds et al 20 , Chen et al 37 and Chen et al 38 have studied the breakup of liquid bridges with free contact lines between two supports with respect to U n . Depending on the magnitude of U n , two distinct regimes were identified: (i) Ca O(1), Re ≪ 1 and (ii) Ca, Re O(1).…”

mentioning

confidence: 99%

Liquid-bridge stability and breakup on surfaces with contact-angle hysteresis

Akbari

Hill

2016

Soft Matter

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We study the stability and breakup of liquid bridges with a free contact line on surfaces with contact-angle hysteresis (CAH) under zero-gravity conditions. Non-ideal surfaces exhibit CAH because of surface imperfections, by which the constraints on three-phase contact lines are influenced. Given that interfacial instabilities are constraintsensitive, understanding how CAH affects the stability and breakup of liquid bridges is crucial for predicting the drop size in contact-drop dispensing. Unlike ideal surfaces on which contact lines are always free irrespective of surface wettability, contact lines may undergo transitions from pinned to free and vice-versa during drop deposition on non-ideal surfaces. Here, we experimentally and theoretically examine how stability and breakup are affected by CAH, highlighting cases where stability is lost during a transition from a pinned-pinned (more constrained) to pinned-free (less constrained) interface-rather than a critical state. This provides a practical means of expediting or delaying stability loss. We also demonstrate how the dynamic contact angle can control the contact-line radius following stability loss. *

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“…The second regime is the dynamic regime where viscous and inertial forces dominate so the liquid is equally partitioned, independently of the respective contact angles. [20][21][22] The geometry of the gripper also influences the liquid bridge rupture. Several studies therefore considered the liquid bridge between a cone and a plane.…”

Section: Introductionmentioning

confidence: 99%

Rupture of a Liquid Bridge between a Cone and a Plane

2019

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In this work, a systematic experimental study of the rupture of an axially symmetric liquid bridge between a cone and a plane was performed, with focus on the volume distribution after break up. A model based on the Young-Laplace equation is presented and its solutions are compared to experimental data. Cones and conical cavities with different aperture angles were used in our experiments. We found that this aperture influences the potential pinning of the contact line, the meniscus shape and therefore the liquid transfer. For half aperture angles α < 70°, where no pinning was observed, the liquid bridge slips off from the cone and almost no transfer to the cone is observed. However, at α > 70°, contact line pinning on the cone induces a net liquid transfer to the cone at rupture. In the case of conical cavities, a maximum of liquid transfer is observed for at α =110°. The distance at which the rupture of the liquid bridge occurs is also discussed. The model can fairly predict the transfer ratio and the rupture height of the liquid bridge.

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Fast Liquid Transfer between Surfaces: Breakup of Stretched Liquid Bridges

Cited by 40 publications

References 22 publications

Multi-scale tarsal adhesion kinematics of freely-walking dock beetles

Multi-scale tarsal adhesion kinematics of freely-walking dock beetles

Liquid-bridge stability and breakup on surfaces with contact-angle hysteresis

Rupture of a Liquid Bridge between a Cone and a Plane

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