期刊
OPTICS COMMUNICATIONS
卷 283, 期 2, 页码 313-317出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2009.10.016
关键词
Mode-matched thermal lens; Metallic-dye nanocluster; Thermal diffusivity
类别
资金
- UGC, India
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. (C) 2009 Elsevier B.V. All rights reserved.
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