Study of the thermal conductivity of ZnO nanowires/PMMA composites
Kh. T. IgamberdievQuantum-functional Semiconductor Research Center, Dongguk University, Seoul, 100-715, KoreaSh. U. YuldashevQuantum-functional Semiconductor Research Center, Dongguk University, Seoul, 100-715, KoreaHak Dong ChoQuantum-functional Semiconductor Research Center, Dongguk University, Seoul, 100-715, KoreaTae-Won KangQuantum-functional Semiconductor Research Center, Dongguk University, Seoul, 100-715, KoreaSh. M. RakhimovaDepartment of Thermophysics, Academy of Sciences, Tashkent, 700135, UzbekistanT. Kh. AkhmedovDepartment of Thermophysics, Academy of Sciences, Tashkent, 700135, Uzbekistan
ABI
Аннотация
From thermal conductivity measurements on ZnO nanowires (NWs)/poly(methyl methacrylate) PMMA composites, the thermal conductivities of the ZnO nanowires were determined. The thermal conductivity of a ZnO NW decreases considerably with decreasing nanowire diameter, and for a ZnO nanowire with a diameter of 250 nm, the thermal conductivity at room temperature is approximately two times lower than that of bulk ZnO at the same temperature. The results of this study show that the thermal conductivity of a ZnO NW is mainly determined by increased phonon-surface boundary scattering. These results could be useful for the design of ZnO-nanowire-based devices.
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