Abstract
Negative permittivity behavior has attracted extensive attention recently owing to its remarkable properties and potential for developing metamaterials. In this paper, the relative complex permittivity and ac conductivity of poly (p-phenylene sulfide)/multiwall carbon nanotube composites were investigated. Both the negative permittivity and ac conductivity behaviors could be explained by Drude model which was attributed to the low frequency plasmons. Small negative values of permittivity have been observed by controlling the multiwall carbon nanotubes contents, meanwhile the weakly negative permittivity possessing good frequency stability. This work provides an alternative to achieve tunable and weakly negative permittivity for the polymer based composites.
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