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Selected Works of Peter M. Hoffmann
Article
NaCl-dependent ordering and dynamic mechanical response in nanoconfined water
Langmuir (2016)
  • Peter M. Hoffmann
  • Shah H. Khan
  • Edward L. Kramkowski
Link
Abstract
Understanding the dynamics of water under nanoscale confinement is important for biology, geology, tribology, and nanotechnology. In many naturally occurring situations, ions are present in water at various concentrations. Here we report on how the addition of sodium ions alters the squeeze-out behavior of water nanoconfined between a mica surface and silicon oxide tip. We find that Na+ ions enhance molecular ordering and lead to longer mechanical relaxation times. We also observed a critical ion concentration, above which the confined water switches from a viscous to an elastic (solid-like) response at very slow, quasistatic compression speeds.
Disciplines
Publication Date
2016
DOI
https://doi.org/10.1021/acs.langmuir.6b02535
Citation Information
Peter M. Hoffmann, Shah H. Khan and Edward L. Kramkowski. "NaCl-dependent ordering and dynamic mechanical response in nanoconfined water" Langmuir (2016)
Available at: http://works.bepress.com/peter_m_hoffmann/11/