Thermal diffusivity of rhodamine 6G incorporated in silver nanofluid measured using mode-matched thermal lens technique

Santhi Ani Joseph*, Misha Hari, S. Mathew, Gaurav Sharma, Soumya, V. M. Hadiya, P. Radhakrishnan, V. P N Nampoori

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Dual beam mode-matched thermal lens method has been employed to measure the heat diffusion in nanofluid of silver with various volumes of rhodamine 6G, both dispersed in water. The important observation is an indication of temperature dependent diffusivity and that the overall heat diffusion is slower in the chemically prepared Ag sol compared to that of water. The experimental results can be explained assuming that Brownian motion is the main mechanism of heat transfer under the present experimental conditions. Light induced aggregation of the nanoparticles can also result in an anomalous diffusion behavior.

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalOptics Communications
Volume283
Issue number2
DOIs
Publication statusPublished - 15 Jan 2010
Externally publishedYes

Keywords

  • Metallic-dye nanocluster
  • Mode-matched thermal lens
  • Thermal diffusivity

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