Objectif In recent years, as first established in some 6 papers in Science and Nature from the PI s group, a new paradigm has emerged. This reveals the remarkable and unsuspected - role of hydration layers in modulating frictional forces between sliding surfaces or molecular layers in aqueous media, termed hydration lubrication, in which the lubricating mode is completely different from the classic one of oils or surfactants. In this project we address the substantial challenges that have now arisen: what are the underlying mechanisms controlling this effect? what are the potential breakthroughs that it may lead to? We will answer these questions through several interrelated objectives designed to address both fundamental aspects, as well as limits of applicability. We will use surface force balance (SFB) experiments, for which we will develop new methodologies, to characterize normal and frictional forces between atomically smooth surfaces where the nature of the surfaces (hydrophilic, hydrophobic, metallic, polymeric), as well as their electric potential, may be independently varied. We will examine mono- and multivalent ions to establish the role of relaxation rates and hydration energies in controlling the hydration lubrication, will probe hydration interactions at both hydrophobic/hydrophilic surfaces and will monitor slip of hydrated ions past surfaces. We will also characterize the hydration lubrication properties of a wide range of novel surface systems, including surfactants, liposomes, polymer brushes and, importantly, liposomes, using also synchrotron X-ray reflectometry for structural information. Attainment of these objectives should lead to conceptual breakthroughs both in our understanding of this new paradigm, and for its practical implications. Champ scientifique engineering and technologymechanical engineeringtribologylubricationnatural scienceschemical sciencespolymer sciences Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-AG-PE4 - ERC Advanced Grant - Physical and Analytical Chemical sciences Appel à propositions ERC-2009-AdG Voir d’autres projets de cet appel Régime de financement ERC-AG - ERC Advanced Grant Institution d’accueil WEIZMANN INSTITUTE OF SCIENCE Contribution de l’UE € 1 980 689,21 Adresse HERZL STREET 234 7610001 Rehovot Israël Voir sur la carte Type d’activité Higher or Secondary Education Establishments Contact administratif Gabi Bernstein (Ms.) Chercheur principal Jacob Klein (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire WEIZMANN INSTITUTE OF SCIENCE Israël Contribution de l’UE € 1 980 689,21 Adresse HERZL STREET 234 7610001 Rehovot Voir sur la carte Type d’activité Higher or Secondary Education Establishments Contact administratif Gabi Bernstein (Ms.) Chercheur principal Jacob Klein (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée THE HEBREW UNIVERSITY OF JERUSALEM Participation terminée Israël Contribution de l’UE € 119 278,39 Adresse EDMOND J SAFRA CAMPUS GIVAT RAM 91904 Jerusalem Voir sur la carte Type d’activité Higher or Secondary Education Establishments Contact administratif Jane Turner (Ms.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée UNIVERSITY OF BRISTOL Royaume-Uni Contribution de l’UE € 204 212,40 Adresse BEACON HOUSE QUEENS ROAD BS8 1QU Bristol Voir sur la carte Région South West (England) Gloucestershire, Wiltshire and Bristol/Bath area Bristol, City of Type d’activité Higher or Secondary Education Establishments Contact administratif Vince Boyle (Mr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
