Motion dynamics of liquid drops and powder-encapsulated liquid marbles on an inclined solid surface

Liquid marbles are hydrophilic liquid drops encapsulated with hydrophobic powder materials. The liquid marbles have potential applications in drug delivery, water purification, ferrofluidic device and sensor microfabrication. In this work, a new type of polytetrafluoroethylene nanoparticle (PTFE-NP) liquid marbles were fabricated successfully using mixing method. The morphology of the formed liquid marbles was characterized under different conditions, and novel properties of the PTFE-NP liquid marbles were investigated and demonstrated.

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Properties of liquid marbles

Proceedings of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rspa.2005.1581 ◽

2006 ◽

Vol 462 (2067) ◽

pp. 973-999 ◽

Cited By ~ 302

Author(s):

Pascale Aussillous ◽

David Quéré

Keyword(s):

Contact Line ◽

Liquid Drops ◽

Liquid Marbles ◽

Liquid Marble

Liquid marbles are liquid drops made non-wetting by the use of a powder which coats them. Because of the absence of a contact line, quick motions without leakage of small amounts of liquid are allowed, which can be of interest in microfluidic applications. After characterizing the static liquid marble, we focus on its properties and study experimentally the viscous motion of liquid marbles. Then, we describe qualitatively possible ways for putting marbles into motion and quantify the robustness of this object.

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Predictive Framework for the Spreading of Liquid Drops and the Formation of Liquid Marbles on Hydrophobic Particle Bed

Langmuir ◽

10.1021/acs.langmuir.9b00698 ◽

2019 ◽

Author(s):

Arul Mozhi Devan Padmanathan ◽

Apoorva Sneha Ravi ◽

Hema Choudhary ◽

Subramanyan Namboodiri Varanakkottu ◽

Sameer V. Dalvi

Keyword(s):

Liquid Drops ◽

Liquid Marbles ◽

Particle Bed ◽

Hydrophobic Particle

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Rebound of Liquid Drops from a Solid Surface

AIHAJ ◽

10.1080/00028896509342777 ◽

1965 ◽

Vol 26 (6) ◽

pp. 579-584

Author(s):

Albert Pfeiffer

Keyword(s):

Solid Surface ◽

Liquid Drops

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A refraction system for studying evaporation of liquid drops from a solid surface

Measurement Techniques ◽

10.1007/s11018-011-9662-7 ◽

2011 ◽

Vol 53 (12) ◽

pp. 1337-1341 ◽

Cited By ~ 1

Author(s):

A. S. Mikhalev ◽

N. M. Skornyakova

Keyword(s):

Solid Surface ◽

Liquid Drops

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Numerical Modeling of Liquid Drop Spreading Behavior on Inclined Surfaces

Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer ◽

10.1115/ht2009-88353 ◽

2009 ◽

Cited By ~ 1

Author(s):

Young-Gil Park ◽

Anthony M. Jacobi

Keyword(s):

Solid Surface ◽

Liquid Drop ◽

Numerical Study ◽

Contact Angle Hysteresis ◽

Contact Angles ◽

Quasi Equilibrium ◽

Liquid Drops ◽

Spreading Behavior ◽

Inclined Surfaces ◽

Liquid Vapor

A numerical study was conducted on the spreading behavior of liquid drops on flat solid surfaces. The model predicts the shape of liquid-vapor interface under static equilibrium using an unstructured surface grid composed of triangular elements. Incremental movement of base contour, i.e. solid-liquid-vapor contact line, is also captured such that the constrained boundary conditions, i.e. advancing and receding contact angles, can be satisfied. The numerical model is applied to a common experiment that studies the behavior of liquid drops on inclined surfaces, where the shape of the drops change in response to an alteration of total volume or gravitational direction. On a heterogeneous surface that has contact angle hysteresis, the shape of the base contour on the solid surface is not determined uniquely but rather dependent upon history. This study demonstrates such dependence by comparing the spreading of a liquid drop on a solid surface with different quasi-equilibrium paths.

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