Figure 4.

Thermal diffusivity decrease ratio with gold nanoparticle size. The nanoparticle concentration was 0.1 mg/ml. The inset shows (left to right) the different size nanofluids of 16 (seeds), 55, 63, 83, 99 and 125 nm.

López-Muñoz et al. Nanoscale Research Letters 2012 7:423   doi:10.1186/1556-276X-7-423
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