Instability of a Lamellar Phase under Shear Flow: Formation of Multilamellar Vesicles

Courbin, Laurent; Delville, Jean‐Pierre; Rouch, J.; Panizza, Pascal

doi:10.1103/physrevlett.89.148305

Cited by 53 publications

(61 citation statements)

References 18 publications

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“…If inverse proportionality between the characteristic time and applied shear rate t ~ γ -1 is observed in this plot, the onion formation can be scaled by the applied strain. Several scientists confirmed that the scaling behavior with the strain successfully holds [8,31,33,34]. However, our results show no inverse proportionality against the shear rate.…”

Section: T 1 and T 2 In The Particle-containing Systemscontrasting

confidence: 54%

“…In fig. 2, transient viscosity at different γ are summarized as a function of the applied shear strain γ = γ t. Transient viscosity increases with double steps as already reported [9,19,31,33]. The double step behavior gradually softens and disappears as γ is increased.…”

Section: Shear-induced Onion Phase Formation In the Free-particle Systemmentioning

confidence: 69%

“…The linear increase of G' at low shear rates will be explained by the development of the oily streak defects. Increase in the defect density has been actually reported as a prerequisite phenomenon for the shear-induced onion phase formation [1,2,15,20,31,33].…”

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

“…Using this relation, the shear modulus of C 10 E 3 onion phase can be estimated to be G' ~ 10 2 Pa, which is also in the same range as observation. Additionally, by incorpolating the scaling law of the onion radius R ~ γ -0.5 [1,2,9,32,33], the shear modulus of the densely packed onion phase can be…”

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

See 3 more Smart Citations

Structural rheology of composite onion phase

Fujii

2015

J Biorheol

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We study the shear-induced composite onion phase formation behavior of the nonionic surfactant C 10 E 3 lamellar phases containing colloidal particles. Composite lamellar phase gives rise to the onion phase similar to the free-particle system. Depending on the particle size and concentration, the nonlinear rheology and shear modulus are significantly influenced, while the critical shear rate and onion formation kinetics remains unchanged from those of the free-particle system. Modification of the nonlinear rheology indicates that the colloidal particles assist the onion structure formation so that undulation instability is easily induced by anchoring of membranes on surface of particles. The shear modulus of the composite lamellar and onion phases is reasonably explained by considering the line tension of defects and the effect of polyhedral edge of the onion, respectively.

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Section: T 1 and T 2 In The Particle-containing Systemscontrasting

confidence: 54%

Section: Shear-induced Onion Phase Formation In the Free-particle Systemmentioning

confidence: 69%

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

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Structural rheology of composite onion phase

Fujii

2015

J Biorheol

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“…Diat and Roux first discovered 20 years ago closely-packed multilamellar vesicle (MLV) structures, so-called the onion phase, in nonionic surfactant-water mixtures under shear flow. [2][3][4] In the last two decades, this onion structure has been studied experimentally using light, 2,4-8 neutron, 2,4,9 and X-ray scattering, 7,8,10 and also by freeze-fracture electron microscopy, 5 and the rheo-NMR method. [11][12][13] Its rheology has been of large interest.…”

Section: Introductionmentioning

confidence: 99%

Structure formation of surfactant membranes under shear flow

Shiba

Noguchi

Gompper

2013

The Journal of Chemical Physics

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Shear-flow-induced structure formation in surfactant-water mixtures is investigated numerically using a meshless-membrane model in combination with a particle-based hydrodynamics simulation approach for the solvent. At low shear rates, uni-lamellar vesicles and planar lamellae structures are formed at small and large membrane volume fractions, respectively. At high shear rates, lamellar states exhibit an undulation instability, leading to rolled or cylindrical membrane shapes oriented in the flow direction. The spatial symmetry and structure factor of this rolled state agree with those of intermediate states during lamellar-to-onion transition measured by time-resolved scatting experiments. Structural evolution in time exhibits a moderate dependence on the initial condition.

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Reconfigurable Large‐Scale Pattern Formation Driven by Topological Defect Separation in Liquid Crystals

Aya

Szűcs

Éber

et al. 2020

Adv Materials Inter

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Large‐scale patterning of topological defects is vital and challenging from both fundamental and technological points of view in anisotropic fluids. However, this is usually difficult because of their unfavorably high‐energy states. Here, a simple but general pathway for topology engineering is presented: processing topological defects and shape large‐scale patterns in materials with liquid crystalline nature. Dragging field is created through flowing materials at liquid–liquid crystal phase transition temperature or designing electric‐field driven temperature gradient. The dragging fields coupled to a dense colony of topological defects with random spatial distribution form nontrivial periodic ordered topological patterns that are energetically unfavorable compared to the uniform ground state, but are stable in the stationary state. Topological polymeric films based on the strategy are also fabricated. The dragging speed and surface interactions are found to be dominant factors in generating and stabilizing the patterns. This strategy endows fluids with regular and large‐scale topological patterns, paving a new way for the development of fluids and gels with spatially modulated topological nature.

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Instability of a Lamellar Phase under Shear Flow: Formation of Multilamellar Vesicles

Cited by 53 publications

References 18 publications

Structural rheology of composite onion phase

Structural rheology of composite onion phase

Structure formation of surfactant membranes under shear flow

Reconfigurable Large‐Scale Pattern Formation Driven by Topological Defect Separation in Liquid Crystals

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