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Dielectric properties of single wall carbon nanotubes-based gelatin phantoms

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摘要 In this work,we report the dielectric properties of Single wall Carbon Nanotubes(SWCNTs)-based phantom that is mainly composed of gelatin and water.The fabricated gelatin-based phantom with desired dielectric properties was fabricated and doped with different concentrations of SWCNTs(e.g.,0%,0.05%,0.10%,0.15%,0.2%,0.4%and 0.6%).The dielectric constants(realε′ and imaginaryε′)were measured at different positions for each sample as a function of frequency(0.5-20 GHz)and concentrations of SWCNTs and their averages were found.The Cole–Cole plot(ε′ versusε′)was obtained for each concentration of SWCNTs and was used to obtain the static dielectric constantεs,the dielectric constant at the high limit of frequencyε∞ and the average relaxation timeτ.The measurements showed that the fabricated samples are in good homogeneity and the SWCNTs are dispersed well in the samples as an acceptable standard deviation is achieved.The study showed a linear increase in the static dielectric constantτ and invariance of the average relaxation time τ and the value ofε∞ at room temperature for the investigated concentrations of SWCNTs.
出处 《Journal of Advanced Dielectrics》 CAS 2018年第2期38-43,共6页 先进电介质学报(英文)
基金 funded by the Deanship of Scientific Research at Mutah University.
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