Molecular intermittent dynamics of interfacial water: probing adsorption and bulk confinement

摘要: Numerous natural and manufactured systems such as colloidal suspensions, geological pore networks, catalysts, nanofluidic devices develop a large sometimes complex interface strongly influencing the dynamics of fluid entrapped inside these materials. A coarse grain picture this molecular can be considered an intermittence adsorption steps bulk relocations from one point to another interface. Adsorption statistics time distribution its first moment reflect degree interaction molecule with Relocation depend on shape pore, surface forces confinement. In paper, theoretical analysis intermittent is presented. direct comparison simulations proposed in case liquid water confined hydrophilic substrate (silica slit hydroxylated surfaces) or hydrophobic (carbon nanotube). Analysis allows quantification level vicinal solid independent region exchange fluid. The possibility experimentally probing using NMR relaxometry emphasized.