72 citations · 213 across the 9 of their papers we have counts for
9 papers
Membrane protein clustering from tension and multibody interactions
Jean-Baptiste Fournier
The point-curvature model for membrane protein inclusions is shown to capture multibody interactions very well. Using this model, we find that the interplay between membrane tensio…
Effective creases and contact angles between membrane domains with high spontaneous curvature
Jean-Baptiste Fournier, Martine Ben Amar
We show that the short-scale elastic distortions that are excited in the vicinity of the joint between different lipidic membrane domains (at a scale of \~10 nm) may produce a "cre…
Wormlike chain or tense string? A question of resolution
J. -B. Fournier
It is shown that a wormlike chain, i.e., a filament with a fixed contour-length S and a bending elasticity kappa, attached to a frame of length L, can be described--at low resoluti…
Effective Area-Elasticity and Tension of Micro-manipulated Membranes
J. -B. Fournier, A. Ajdari, L. Peliti
We evaluate the effective Hamiltonian governing, at the optically resolved scale, the elastic properties of micro-manipulated membranes. We identify floppy, entropic-tense and stre…
Casimir Torques between Anisotropic Boundaries in Nematic Liquid Crystals
R. Golestanian, A. Ajdari, J. -B. Fournier
Fluctuation-induced interactions between anisotropic objects immersed in a nematic liquid crystal are shown to depend on the relative orientation of these objects. The resulting lo…
Long-range Casimir interactions between impurities in nematic liquid crystals and the collapse of polymer chains in such solvents
D. Bartolo, D. Long, J. -B. Fournier
The elastic interactions between objects embedded in a nematic liquid crystal are usually caused by the average distorsion-rather than by the fluctuations-of the nematic orientatio…
Microscopic membrane elasticity and interactions among membrane inclusions: Interplay between the shape, dilation, tilt and tilt-difference modes
J. -B. Fournier
A phenomenological Landau elasticity for the shape, dilation, and lipid-tilt of bilayer membranes is developed. The shape mode couples with the sum of the monolayers' tilt, while t…
Coupling between membrane tilt-difference and dilation: a new ``ripple'' instability and multiple crystalline inclusions phases
J. -B. Fournier
A continuum Landau theory for the micro-elasticity of membranes is discussed, which incorporates a coupling between the bilayer thickness variation and the difference in the two mo…
Bi-defects of Nematic Surfactant Bilayers
J. -B. Fournier, L. Peliti
We consider the effects of the coupling between the orientational order of the two monolayers in flat nematic bilayers. We show that the presence of a topological defect on one bil…