Shape, Vibrations, and Effective Surface Tension of Water Marbles

Bormashenko, Edward; Pogreb, Roman; Whyman, Gene; Musin, Albina; Bormashenko, Yelena; Barkay, Zahava

doi:10.1021/la8028484

Cited by 104 publications

(98 citation statements)

References 31 publications

(59 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1, is the non-stick droplet encapsulated with micro-or nano-scaled solid particles [5][6][7]. Since liquid marbles were introduced in the pioneering works of Quèrè et al, they have been exposed to the intensive theoretical and experimental research [8][9][10][11][12][13]. An interest in liquid marbles arises from both their very unusual physical properties and their promising applications.…”

Section: Introductionmentioning

confidence: 99%

Interpretation of elasticity of liquid marbles

Whyman

Bormashenko

2015

Journal of Colloid and Interface Science

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Interpretation of elasticity of liquid marbles

Whyman

Bormashenko

2015

Journal of Colloid and Interface Science

Self Cite

View full text Add to dashboard Cite

“…Liquid marbles are non-stick droplets encapsulated with micro-or nano-scaled solid particles (Mahadevan 2001;Aussillous and Quéré 2001, 2004, 2006 Since liquid marbles were introduced in the pioneering works of Aussillous and Quèrè (2001), they have been exposed to intensive theoretical and experimental research (McHale et al 2009;Arbatan and Shen 2011;Bormashenko et al 2009aBormashenko et al , 2011Bormashenko et al , 2013aPlanchette et al 2012Planchette et al , 2013Laborie et al 2013). An interest in liquid marbles arises from both their very unusual physical properties and their promising applications.…”

Section: Introductionmentioning

confidence: 99%

Liquid marbles containing petroleum and their properties

et al. 2015

Self Cite

View full text Add to dashboard Cite

Liquid marbles (non-stick droplets) containing crude petroleum are reported. Liquid marbles were obtained by use of fluorinated decyl polyhedral oligomeric silsequioxane (FD-POSS) powder. Marbles containing crude petroleum remained stable on a broad diversity of solid and liquid supports. The effective surface tension of marbles filled with petroleum was established. The mechanism of friction of the marbles is discussed. Actuation of liquid marbles containing crude petroleum with an electric field is presented.

show abstract

“…For powder with grain sizes finer than approximately 100 µm, the cohesive properties make it difficult to produce liquid marbles with just a monolayer. Previous studies (Aussillous and Quere 2006;Gao and McCarthy 2007;Bormashenko et al 2009;Arbatan and Shen 2011) have shown that water droplets coated with fine silica grains yield approximately the same surface tension as pure water (σ ≈ 72 mN/m).…”

Section: Discussion and Concluding Remarksmentioning

confidence: 94%

Laser-induced micro-jetting from armored droplets

Marston

Thoroddsen

2015

Exp Fluids

View full text Add to dashboard Cite

The issue of the buckling mechanism in droplets stabilized by solid particles (armored droplets) is tackled at a mesoscopic level using dissipative particle dynamics simulations. We consider spherical water droplet in a decane solvent coated with nanoparticle monolayers of two different types: Janus and homogeneous. The chosen particles yield comparable initial three-phase contact angles, chosen to maximize the adsorption energy at the interface. We study the interplay between the evolution of droplet shape, layering of the particles, and their distribution at the interface when the volume of the droplets is reduced. We show that Janus particles affect strongly the shape of the droplet with the formation of a crater-like depression. This evolution is actively controlled by a close-packed particle monolayer at the curved interface. On the contrary, homogeneous particles follow passively the volume reduction of the droplet, whose shape does not deviate too much from spherical, even when a nanoparticle monolayer/bilayer transition is detected at the interface. We discuss how these buckled armored droplets might be of relevance in various applications including potential drug delivery systems and biomimetic design of functional surfaces. Pickering emulsions [1], i.e. particle-stabilized emulsions , have been studied intensively in recent years owning to their wide range of applications including biofuel processing [2] and food preservation [3, 4]. They have also been developed as precursors to magnetic particles for imaging [5] and drug delivery systems [6]. Even with their widespread use, they remain, however, underuti-lized. In Pickering emulsions, particles and/or nanopar-ticles (NPs) with suitable surface chemistries adsorb at the droplet surfaces, with an adsorption energy of up to thousands of times the thermal energy. The characteristics of Pickering emulsions pose a number of intriguing fundamental physical questions including a thorough understanding of the perennial lack of detail about how particles arrange at the liquid/liquid interface. Other not completely answered questions include particle effects on interfacial tension [7], layering [8], buckling [9-11] and particle release [8, 12]. In some important processes that involve emulsions, it can be required to reduce the volume of the dispersed droplets [9, 13-15]. The interface may undergo large deformations that produce compressive stresses, causing localized mechanical instabilities. The proliferation of these localized instabilities may then result in a variety of collapse mechanisms [8, 10, 11]. Despite the vast interest in particle-laden interfaces, the key factors that determine the collapse of curved particle-laden interfaces are still subject of debate. Indeed, although linear elasticity describes successfully the morphology of buckled particle-laden droplets, it is still unclear whether the onset of buckling can be explained in terms of classic elastic buckling criteria [16, 17], capillary pressure-driven phase transition [9], or interfacial co...

show abstract

Shape, Vibrations, and Effective Surface Tension of Water Marbles

Cited by 104 publications

References 31 publications

Interpretation of elasticity of liquid marbles

Interpretation of elasticity of liquid marbles

Liquid marbles containing petroleum and their properties

Laser-induced micro-jetting from armored droplets

Contact Info

Product

Resources

About