Figure 2.

Thermal conductivity enhancement varying with the tested temperatures. (a) Oxide nanofluids: MgO-EG [38]; ZnO-EG [39]; Graphene-EG [41]; (b) Nonoxide nanofluids: Cu-EG [42]; CNT-EG [8]; DNP-EG [40].

Xie et al. Nanoscale Research Letters 2011 6:124   doi:10.1186/1556-276X-6-124
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