Viscoelastic Flows in Simple Liquids Generated by Vibrating Nanostructures

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PhysRevLett.111.244502.pdf (1.51 MB)
Viscoelastic_Supplemental_Material_PRL_revised.pdf (4.46 MB)

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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.244502

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https://doi.org/10.1103/PhysRevLett.111.244502
 http://hdl.handle.net/11603/29230

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UMBC Physics Department
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0002-6370-8765

Date

2013-12-13

Type of Work

journal articles
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Citation of Original Publication

Pelton, Matthew, Debadi Chakraborty, Edward Malachosky, Philippe Guyot-Sionnest, and John E. Sader. “Viscoelastic Flows in Simple Liquids Generated by Vibrating Nanostructures.” Physical Review Letters 111, no. 24 (December 13, 2013): 244502. https://doi.org/10.1103/PhysRevLett.111.244502.

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© 2013 American Physical Society

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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.