title: Measurement of lipid forces by X-ray diffraction and osmotic stress.
abstract: Lipid suspensions in aqueous solutions most often form multilamellar vesicles of uniformly spaced bilayers. Interlamellar spacing is determined by the balance of attractive van der Waals (charge fluctuation) and repulsive forces. This balance of forces, as well as membrane elasticity, can be probed by applied osmotic stress. We describe how osmotic stress can be imposed on multilamellar lipid samples to study lipid interactions.
authors.affiliation: Department of Physics, Indiana University, Indianapolis, USA.
authors.forename: Horia I
authors.initials: HI
authors.lastname: Petrache
authors.forename: Daniel
authors.initials: D
authors.lastname: Harries
authors.forename: V Adrian
authors.initials: VA
authors.lastname: Parsegian
mesh_terms: D004548:Elasticity; D008051:Lipid Bilayers / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D009997:Osmotic Pressure; D014961:X-Ray Diffraction
chemical_list: D008051:Lipid Bilayers; D008055:Lipids