Shear response of nanoconfined water on muscovite mica: role of cations |
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| Authors: | Ulcinas Arturas Valdre Giovanni Snitka Valentinas Miles Mervyn J Claesson Per M Antognozzi Massimo |
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| Affiliation: | Research Centre for Microsystems and Nanotechnologies, Kaunas University of Technology, LT-51369 Kaunas, Lithuania. aulcinas@gmail.com |
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| 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. |
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