Steric Interactions in a Model Multimembrane System: A Synchrotron X-Ray Study

Safinya, Cyrus R.; Roux, D.; Smith, Gregory S.; Sinha, Sunil K.; Dimon, P.; Clark, Noel A.; Bellocq, A. M.

doi:10.1103/physrevlett.57.2718

Cited by 442 publications

(351 citation statements)

References 9 publications

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“…On scales larger than l 0 the deformation is controled by the harmonic potential while on smaller scales the behaviour of the membrane is ruled by curvature effects. In particular, for non-ionic L α phases where steric Helfrich interactions control the repulsion between the membranes [39,40], it is possible to show that the lenght l 0 is proportional to the average interlamellar spacing d…”

Section: Polymers Anchored On a Constrained Membranementioning

confidence: 99%

Local entropic effects of polymers grafted to soft interfaces

Bickel

Jeppesen

Marques

2001

The European Physical Journal E

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In this paper, we study the equilibrium properties of polymer chains end-tethered to a fluid membrane. The loss of conformational entropy of the polymer results in an inhomogeneous pressure field that we calculate for gaussian chains. We estimate the effects of excluded volume through a relation between pressure and concentration. Under the polymer pressure, a soft surface will deform. We calculate the deformation profile for a fluid membrane and show that close to the grafting point, this profile assumes a cone-like shape, independently of the boundary conditions. Interactions between different polymers are also mediated by the membrane deformation. This pair-additive potential is attractive for chains grafted on the same side of the membrane and repulsive otherwise.

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Section: Polymers Anchored On a Constrained Membranementioning

confidence: 99%

Local entropic effects of polymers grafted to soft interfaces

Bickel

Jeppesen

Marques

2001

The European Physical Journal E

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“…The [8,11] that the stability of the phase is mainly determined by the long range steric interaction which has been introduced and evaluated by Helfrich [12]. It figure 3.…”

mentioning

confidence: 99%

An X-ray study of brine swollen lyotropic lamellar phases

Bassereau¹,

Marignan²,

Porte³

1987

J. Phys. France

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“…In the ternary systems electrostatics is the dominant factor in producing stability and relative rigidity [121], whereas the quaternary systems are stabilized by Helfrich undulation forces which arise from thermal fluctuations of the flexible layers as an effect of dilution with 'oil' (dodecane) [122,123]. The detailed description of structural alignment of particular SDS mesophases has been given elsewhere [52,66,124].…”

Section: Ternary and Quaternary Systems Of Sdsmentioning

confidence: 99%

“…The partial triangular phase diagram of the quaternary SDS, water, pentanol, dodecane system at 25 °C [124], with corresponding textures of the SDS mesophases comprising phenyl alcohols in polarized light microscopy. The water-to-surfactant weight ratio (W/S = 1.552 ± 0.002) is kept constant.…”

Section: Figure 33mentioning

confidence: 99%