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In Situ Accurate Analysis of Colloidal Nanoparticles via Four Wave Mixing

Published online by Cambridge University Press:  02 January 2018

Jian Wu
Affiliation:
University of Victoria, Canada
Dao Xiang
Affiliation:
University of Victoria, Canada
Ching-Chung Hsueh
Affiliation:
University of British Columbia, Canada
Jörg Rottler
Affiliation:
University of British Columbia, Canada
Reuven Gordon*
Affiliation:
University of Victoria, Canada
*
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Abstract

Four-wave mixing (FWM) is used to measure the vibrational modes of nanoparticles in solution. The vibrations give information about the particle size, material properties and shape. This method has been used for in-situ monitoring of the growth of nanoparticles with high accuracy, as confirmed by electron microscopy analysis. We observe a threshold in the FWM signal which we believe is from a cavity forming around the nanoparticles that reduces viscous damping. We have observed this effect in molecular dynamics simulations as well.

Type
Articles
Copyright
Copyright © Materials Research Society 2017 

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References

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