Journal article

When Can the Elastic Properties of Simple Liquids Be Probed Using High-Frequency Nanoparticle Vibrations?

Debadi Chakraborty, Gregory V Hartland, Matthew Pelton, John E Sader

JOURNAL OF PHYSICAL CHEMISTRY C | AMER CHEMICAL SOC | Published : 2018

Abstract

Recent measurements on the gigahertz vibration of nanoparticles immersed in simple liquids, such as glycerol, show that the liquid's viscoelastic properties can significantly affect the nanoparticle's mechanical response. Here, we theoretically explore the high-frequency (elastic) limit of this phenomenon where the characteristic time scale for molecular relaxation in the liquid far exceeds the nanoparticle's vibration period. Paradoxically, we find that the effects of liquid elasticity (and viscosity) may not be visible in the nanoparticle's dynamic response in this high-frequency elastic limit - the response being identical to that of a macroscopic resonator in an inviscid fluid. A compreh..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council Centre of Excellence in Exciton Science


Awarded by US National Science Foundation


Awarded by Division Of Materials Research


Funding Acknowledgements

This research was supported by the Australian Research Council Centre of Excellence in Exciton Science (CE170100026) and the Australian Research Council Grants Scheme. GVH acknowledges support from the US National Science Foundation through grant CHE-1502848. MP acknowledges support from the US National Science Foundation under grant DMR-1554895.