title: Hydration forces at solid and fluid biointerfaces.
abstract: The authors review the different molecular mechanisms giving rise to the repulsive hydration force between biologically relevant surfaces such as lipid bilayers and bioceramics. As the authors will show, the hydration force manifests itself in very different and subtle ways depending on the substrates. Soft, mobile surfaces such as lipid bilayers tend to exhibit monotonic, decaying hydration force, originated from the entropic constriction of the lipid head groups. Solid surfaces, on the other hand, tend to exhibit a periodic oscillatory hydration force, originated from the surface induced polarization of water molecules. In this review, the authors will describe both subtle faces of this important interaction by first describing the early experiments performed on solid surfaces and their interpretation by recent simulation studies. Then, the authors will describe the hydration force between fluid interfaces such as bilayers and explain how experimentally researchers have unraveled the dominant role of the lipid head groups' conformation.
authors.affiliation: Canada Research Chair in Bio-Inspired Materials and Interfaces, Faculty of Pharmacy, Université de Montréal, P.O. Box 6128, Montréal, Quebec H3C 3J7, Canada.
authors.forename: Buddha Ratna
authors.initials: BR
authors.lastname: Shrestha
authors.affiliation: Canada Research Chair in Bio-Inspired Materials and Interfaces, Faculty of Pharmacy, Université de Montréal, P.O. Box 6128, Montréal, Quebec H3C 3J7, Canada.
authors.forename: Xavier
authors.initials: X
authors.lastname: Banquy
mesh_terms: D003102:Colloids / Q000737:chemistry*; D008051:Lipid Bilayers / Q000737:chemistry; D055672:Static Electricity; D014867:Water / Q000737:chemistry
chemical_list: D003102:Colloids; D008051:Lipid Bilayers; D014867:Water