Table 2
Thermal diffusivity of gold nanofluids at different nanoparticle concentrations
Concentration	α55 nm(10−4 cm2·s−1) ± 0.04	α83nm(10−4 cm2·s−1)  ± 0.04
0.2 mg/ml	14.74	14.56
0.4 mg/ml	14.81	14.59
0.6 mg/ml	14.85	14.64
0.8 mg/ml	14.91	14.69
1 mg/ml	14.99	14.76

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