Photothermal Characterization of Nanogold Under Conditions of Resonant Excitation and Energy Transfer

We have performed thermal diffusion measurements of nanofluid containing gold and rhodamine 6G dye in various ratios. At certain concentrations, gold is nearly four times more efficient than water in dissipating small temperature fluctuations in a medium, and therefore it will find applications as h...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2010-03, Vol.5 (1), p.63-68
Main Authors: Ani Joseph, Santhi, Mathew, S., Sharma, Gaurav, Hari, Misha, Kurian, Achamma, Radhakrishnan, P., Nampoori, V. P. N.
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Nanotechnology
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Summary:We have performed thermal diffusion measurements of nanofluid containing gold and rhodamine 6G dye in various ratios. At certain concentrations, gold is nearly four times more efficient than water in dissipating small temperature fluctuations in a medium, and therefore it will find applications as heat transfer fluids. We have employed dual-beam mode-matched thermal lens technique for the present investigation. It is a sensitive technique in measuring photothermal parameters because of the use of a low-power, stabilized laser source as the probe. We also present the results of fluorescence measurements of the dye in the nanogold environment.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-009-9116-0