By monitoring the thermal noise of a vertically oriented micromechanical force sensor, we detect the viscoelastic response to shear for water in a subnanometer confinement. Measurements in pure water as well as under acidic and high-ionic-strength conditions relate this response to the effect of surface-adsorbed cations, which, because of their hydration, act as pinning centers restricting the mobility of the confined water molecules.
Shear response of nanoconfined water on muscovite mica: role of cations / Ulcinas A.; Valdre G.; Snitka V.; Miles M.J.; Claesson P.M.; Antognozzi M.. - In: LANGMUIR. - ISSN 0743-7463. - STAMPA. - 27:17(2011), pp. 10351-10355. [10.1021/la2021897]
Shear response of nanoconfined water on muscovite mica: role of cations
VALDRE', GIOVANNI;
2011
Abstract
By monitoring the thermal noise of a vertically oriented micromechanical force sensor, we detect the viscoelastic response to shear for water in a subnanometer confinement. Measurements in pure water as well as under acidic and high-ionic-strength conditions relate this response to the effect of surface-adsorbed cations, which, because of their hydration, act as pinning centers restricting the mobility of the confined water molecules.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
