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Thermal Effects of Colloidal Suspensions of Au Nanoparticles

Published online by Cambridge University Press:  31 January 2011

Michael T. Carlson ,
Tyler S. Barton ,
Peter J. Tandler ,
Hugh H. Richardson  and
Alexander O. Govorov
Michael T. Carlson
Affiliation:
mc105600@ohio.edu, Ohio University, Chemistry and Biochemistry, 132 Clippinger Laboratories, Athens, Ohio, 45701, United States
Tyler S. Barton
Affiliation:
tb138407@ohio.edu, Ohio University, Chemistry and Biochemistry, Athens, Ohio, United States
Peter J. Tandler
Affiliation:
ptandler@walsh.edu, Walsh, Math and Science, North Canton, Ohio, United States
Hugh H. Richardson
Affiliation:
richards@helios.phy.ohiou.edu, Ohio University, Chemistry and Biochemistry, Athens, Ohio, United States
Alexander O. Govorov
Affiliation:
govorov@helios.phy.ohiou.edu, Ohio University, Physics and Astronomy, Athens, Ohio, United States
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Abstract

The thermo-optical properties of gold nanoparticles suspended in liquid water droplets have been explored. A water droplet containing suspended gold nanoparticles was irradiated with a laser beam and the efficiency of light-to-heat conversion (η) was determined. Heat generated by the optically stimulated nanoparticles was found to dissipate through several mechanisms. Convection currents were observed visually inside the droplet by the addition of silica beads (˜3-10 micrometers). This was determined to be the dominant mechanism of stirring within the droplet.

Keywords

nanoscalethermal conductivityliquid
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1172: Symposium T – Nanoscale Heat Transport–From Fundamentals to Devices , 2009 , 1172-T05-08
Copyright
Copyright © Materials Research Society 2009

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References

1 Richardson, H. H. Carlson, M. T. Tandler, P. J. Hernandez, P. and Govorov, A. O. Nano Letters 9, 1139–1146 (2009).Google Scholar
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