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Viscoelastic Flows in Simple Liquids Generated by Vibrating Nanostructures

Matthew Pelton, Debadi Chakraborty, Edward Malachosky, Philippe Guyot-Sionnest, and John E. Sader
Phys. Rev. Lett. 111, 244502 – Published 13 December 2013
Physics logo See Focus story: Water Doesn’t Always Go with the Flow
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Abstract

Newtonian fluid mechanics, in which the shear stress is proportional to the strain rate, is synonymous with the flow of simple liquids such as water. We report the measurement and theoretical verification of non-Newtonian, viscoelastic flow phenomena produced by the high-frequency (20 GHz) vibration of gold nanoparticles immersed in water-glycerol mixtures. The observed viscoelasticity is not due to molecular confinement, but is a bulk continuum effect arising from the short time scale of vibration. This represents the first direct mechanical measurement of the intrinsic viscoelastic properties of simple bulk liquids, and opens a new paradigm for understanding extremely high frequency fluid mechanics, nanoscale sensing technologies, and biophysical processes.

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  • Received 2 July 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.244502

© 2013 American Physical Society

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Water Doesn’t Always Go with the Flow

Published 13 December 2013

Experiments demonstrate that even simple fluids can spring back when deformed, if you push them fast enough.

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Authors & Affiliations

Matthew Pelton1,*, Debadi Chakraborty2, Edward Malachosky3, Philippe Guyot-Sionnest3, and John E. Sader2,4,†

  • 1Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 2Department of Mathematics and Statistics, The University of Melbourne, Victoria 3010, Australia
  • 3James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA
  • 4Kavli Nanoscience Institute and Department of Physics, California Institute of Technology, Pasadena, California 91125, USA

  • *Present address: Department of Physics, University of Maryland, Baltimore County, Baltimore, MD 21250, USA.
  • To whom all correspondence should be addressed. jsader@unimelb.edu.au

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Issue

Vol. 111, Iss. 24 — 13 December 2013

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