Figure 1.

Nanofluid synthesis. (a) A mixture of molten salt powder and alumina nanoparticles was prepared in a beaker; (b) The same weight of DI water was added into the beaker; (c) The solution was mixed up in an ultrasonic for 100 min; (d) The DI water was evaporated via heating the solution on a hot plate at 90°C for 12 h; (e) The solution was melted at 300°C in a high-temperature oven.

Lu and Huang Nanoscale Research Letters 2013 8:292   doi:10.1186/1556-276X-8-292
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