Viscosity of a nanoconfined liquid during compression

Journal Article · Mon Jan 13 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4861856· OSTI ID:22275837

Khan, Shah H. ^[1]; Kramkowski, Edward L.; Ochs, Peter J.; Wilson, David M.

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1. Institute of Physics and Electronics, University of Peshawar, Peshawar 25120 (Pakistan)

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.

• OSTI ID: 22275837
• Journal Information: Applied Physics Letters, Vol. 104, Issue 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
ATOMIC FORCE MICROSCOPY
COMPRESSION
DAMPING
FLEXIBILITY
LIQUIDS
NANOSTRUCTURES
OSCILLATIONS
VISCOSITY