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Title: Viscosity of a nanoconfined liquid during compression

The viscous behavior of liquids under nanoconfinement is not well understood. Using a small-amplitude atomic force microscope, we found bulk-like viscosity in a nanoconfined, weakly interacting liquid. A further decrease in viscosity was observed at confinement sizes of a just few molecular layers. Overlaid over the continuum viscous behavior, we measured non-continuum stiffness and damping oscillations. The average stiffness of the confined liquid was found to scale linearly with the size of the confining tip, while the damping scales with the radius of curvature of the tip end.
Authors:
 [1] ; ; ; ;  [2]
  1. Institute of Physics and Electronics, University of Peshawar, Peshawar 25120 (Pakistan)
  2. Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201 (United States)
Publication Date:
OSTI Identifier:
22275837
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; ATOMIC FORCE MICROSCOPY; COMPRESSION; DAMPING; FLEXIBILITY; LIQUIDS; NANOSTRUCTURES; OSCILLATIONS; VISCOSITY