scholarly journals Adsorption of soft particles at fluid interfaces

Soft Matter ◽  
2015 ◽  
Vol 11 (37) ◽  
pp. 7412-7419 ◽  
Author(s):  
Robert W. Style ◽  
Lucio Isa ◽  
Eric R. Dufresne
Keyword(s):  
Fluid Interfaces ◽  
Fluid Interface ◽  
Soft Particles

We explain why soft particles make good emulsifiers by analysing their deformations at a fluid–fluid interface.

scholarly journals Soft particles at a fluid interface

Soft Matter ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1062-1073 ◽  
Author(s):  
Hadi Mehrabian ◽  
Jens Harting ◽  
Jacco H. Snoeijer
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Young’S Modulus ◽  
Fluid Interfaces ◽  
Liquid Droplets ◽  
Fluid Interface ◽  
Rigid Particles ◽  
Soft Particles ◽  
Dynamics Simulations ◽  
Elastic Particles

Soft particles can be used as an alternative to rigid particles, to stabilise fluid interfaces in the oil, food, and cosmetic industries. Using molecular dynamics simulations and continuum calculations, it is shown that the shape of soft elastic particles at a fluid interface is not only affected by their Young's modulus, but also strongly depends on their wettability, analogous to liquid droplets.

scholarly journals In situ assessment of the contact angles of nanoparticles adsorbed at fluid interfaces by multiple angle of incidence ellipsometry

Soft Matter ◽  
2014 ◽  
Vol 10 (36) ◽  
pp. 6999-7007 ◽  
Author(s):  
Antonio Stocco ◽  
Ge Su ◽  
Maurizio Nobili ◽  
Martin In ◽  
Dayang Wang
Keyword(s):  
Surface Coverage ◽  
Contact Angles ◽  
Fluid Interfaces ◽  
Angle Of Incidence ◽  
Fluid Interface ◽  
Colloidal Interactions ◽  
In Situ Assessment

Contact angles and surface coverage of nanoparticles adsorbing at the fluid interface are assessed by ellipsometry. Results reveal the competition between wetting and colloidal interactions.

Continuum and Molecular Dynamics Studies of the Hydrodynamics of Colloids Straddling a Fluid Interface

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Charles Maldarelli ◽  
Nicole T. Donovan ◽  
Subramaniam Chembai Ganesh ◽  
Subhabrata Das ◽  
Joel Koplik
Keyword(s):  
Molecular Dynamics ◽  
Characteristic Size ◽  
Two Dimensions ◽  
Annual Review ◽  
Publication Date ◽  
Fluid Interfaces ◽  
Particle Interactions ◽  
Fluid Interface ◽  
Interfacial Energies ◽  
Multiple Particle

Colloid-sized particles (10 nm–10 μm in characteristic size) adsorb onto fluid interfaces, where they minimize their interfacial energy by straddling the surface, immersing themselves partly in each phase bounding the interface. The energy minimum achieved by relocation to the surface can be orders of magnitude greater than the thermal energy, effectively trapping the particles into monolayers, allowing them freedom only to translate and rotate along the surface. Particles adsorbed at interfaces are models for the understanding of the dynamics and assembly of particles in two dimensions and have broad technological applications, importantly in foam and emulsion science and in the bottom-up fabrication of new materials based on their monolayer assemblies. In this review, the hydrodynamics of the colloid motion along the surface is examined from both continuum and molecular dynamics frameworks. The interfacial energies of adsorbed particles is discussed first, followed by the hydrodynamics, starting with isolated particles followed by pairwise and multiple particle interactions. The effect of particle shape is emphasized, and the role played by the immersion depth and the surface rheology is discussed; experiments illustrating the applicability of the hydrodynamic studies are also examined. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals Interface deformations affect the orientation transition of magnetic ellipsoidal particles adsorbed at fluid–fluid interfaces

Soft Matter ◽  
2014 ◽  
Vol 10 (35) ◽  
pp. 6742-6748 ◽  
Author(s):  
Gary B. Davies ◽  
Timm Krüger ◽  
Peter V. Coveney ◽  
Jens Harting ◽  
Fernando Bresme
Keyword(s):  
Magnetic Field ◽  
Fluid Interfaces ◽  
Fluid Interface ◽  
Ellipsoidal Particles ◽  
Particle Monolayer

Magnetic ellipsoidal particles adsorbed at a fluid–fluid interface create dipolar interface deformations in response to a magnetic field, which affects their orientation and may lead to novel particle monolayer structures.

scholarly journals Particle and Particle-Surfactant Mixtures at Fluid Interfaces: Assembly, Morphology, and Rheological Description

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Armando Maestro ◽  
Eva Santini ◽  
Dominika Zabiegaj ◽  
Sara Llamas ◽  
Francesca Ravera ◽  
...  
Keyword(s):  
Contact Angle ◽  
Equations Of State ◽  
Fluid Interfaces ◽  
Interfacial Behavior ◽  
Fluid Interface ◽  
Surfactant Mixtures ◽  
Interfacial Assembly ◽  
Shear Rheology ◽  
Properties Of Materials ◽  
Definition Of

We report here a review of particle-laden interfaces. We discuss the importance of the particle’s wettability, accounted for by the definition of a contact angle, on the attachment of particles to the fluid interface and how the contact angle is strongly affected by several physicochemical parameters. The different mechanisms of interfacial assembly are also addressed, being the adsorption and spreading the most widely used processes leading to the well-known adsorbed and spread layers, respectively. The different steps involved in the adsorption of the particles and the particle-surfactant mixtures from bulk to the interface are also discussed. We also include here the different equations of state provided so far to explain the interfacial behavior of the nanoparticles. Finally, we discuss the mechanical properties of the interfacial particle layers via dilatational and shear rheology. We emphasize along that section the importance of the shear rheology to know the intrinsic morphology of such particulate system and to understand how the flow-field-dependent evolution of the interfacial morphology might eventually affect some properties of materials such as foams and emulsions. We dedicated the last section to explaining the importance of the particulate interfacial systems in the stabilization of foams and emulsions.

Dynamics and Wetting Behavior of Core–Shell Soft Particles at a Fluid–Fluid Interface

Langmuir ◽  
2018 ◽  
Vol 34 (50) ◽  
pp. 15370-15382 ◽  
Author(s):  
Siddarth A. Vasudevan ◽  
Astrid Rauh ◽  
Martin Kröger ◽  
Matthias Karg ◽  
Lucio Isa
Keyword(s):  
Core Shell ◽  
Fluid Interface ◽  
Wetting Behavior ◽  
Soft Particles

scholarly journals Desorption energy of soft particles from a fluid interface

Soft Matter ◽  
2020 ◽  
Vol 16 (37) ◽  
pp. 8655-8666
Author(s):  
Hadi Mehrabian ◽  
Jacco H. Snoeijer ◽  
Jens Harting
Keyword(s):  
Free Energy ◽  
Mechanical Work ◽  
Fluid Interface ◽  
Desorption Energy ◽  
Soft Particles

The efficiency of soft particles to stabilize emulsions is examined by measuring their desorption free energy, i.e., the mechanical work required to detach the particle from a fluid interface.

scholarly journals Curvature dynamics and long-range effects on fluid–fluid interfaces with colloids

Soft Matter ◽  
2019 ◽  
Vol 15 (13) ◽  
pp. 2848-2862 ◽  
Author(s):  
A. Tiribocchi ◽  
F. Bonaccorso ◽  
M. Lauricella ◽  
S. Melchionna ◽  
A. Montessori ◽  
...  
Keyword(s):  
Long Range ◽  
Colloidal Particles ◽  
Fluid Interfaces ◽  
Fluid Interface ◽  
Fluid Mixture ◽  
Binary Fluid ◽  
Interface Curvature

The fluid–fluid interface curvature can provide new insights into local inhomogeneities of a binary fluid mixture containing colloidal particles.

scholarly journals Mechanically driven accumulation of microscale material at coupled solid–fluid interfaces in biological channels

2014 ◽  
Vol 11 (91) ◽  
pp. 20130922 ◽  
Author(s):  
T. I. Zohdi
Keyword(s):  
Shear Stress ◽  
Accumulation Rate ◽  
Critical Value ◽  
Rate Equations ◽  
Fluid Interfaces ◽  
Sectional Area ◽  
Fluid Interface ◽  
Cross Sectional ◽  
Initial Stage ◽  
Biological Channels

The accumulation of microscale materials at solid–fluid interfaces in biological channels is often the initial stage of certain growth processes, which are present in some forms of atherosclerosis. The objective of this work is to develop a relatively simple model for such accumulation, which researchers can use to qualitatively guide their analyses. Specifically, the approach is to construct rate equations for the accumulation at the solid–fluid interface as a function of the intensity of the shear stress. The accumulation of material subsequently reduces the cross-sectional area of the channel until the fluid-induced shear stress at the solid–fluid interface reaches a critical value, which terminates the accumulation rate. Characteristics of the model are explored analytically and numerically.

scholarly journals Self-diffusiophoresis induced by fluid interfaces

Soft Matter ◽  
2018 ◽  
Vol 14 (8) ◽  
pp. 1375-1388 ◽  
Author(s):  
P. Malgaretti ◽  
M. N. Popescu ◽  
S. Dietrich
Keyword(s):  
Physical Properties ◽  
The Self ◽  
Fluid Interfaces ◽  
Axially Symmetric ◽  
Fluid Interface ◽  
Two Fluid ◽  
Fluid Phases

The influence of a fluid–fluid interface on the self-phoresis of chemically active spherical colloids is analyzed for axially symmetric configurations. Distinct from the case of hard walls, motion of the particle either towards or away from the interface can be induced by tuning the physical properties of one of the two fluid phases.

Sign in / Sign up

Export Citation Format

Share Document