Thermal Percolation in Stable Graphite Suspensions
作者： Ruiting Zheng , Jinwei Gao , Jianjian Wang , Shien-Ping Feng , Hiroko Ohtani
DOI: 10.1021/NL203276Y
关键词:
摘要: Different from the electrical conductivity of conductive composites, thermal usually does not have distinctive percolation characteristics. Here we report that graphite suspensions show distinct behavior in at threshold, including a sharp kink below which increases rapidly while above rate increase is smaller, contrary to behavior. Based on microstructural and alternating current impedance spectroscopy studies, interpret this as result change interaction forces between flakes when isolated clusters form percolated structures. Our results shed light enhancement mechanisms nanofluids potential applications energy systems.
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