Broadband characterization of carbon nanotube networks
作者： E Decrossas , Mahmoud A EL Sabbagh , V F Hanna , S M El-Ghazaly
DOI: 10.1109/ISEMC.2010.5711273
关键词:
摘要: In this paper, the complex permittivity of carbon nanotube networks is extracted over a broadband frequencies using non destructive, simple, and low-cost procedure. The structure holding material under test hollow circular waveguide shorted at one end connected through precision adapter to 1.85 mm-50-Ω coaxial cable performance network analyzer. testing configuration, discontinuities between different transmission lines are modeled based on full-wave mode matching technique. modeling, all higher-order modes propagating evanescent considered in computation which produces generalized scattering matrices (GSMs). A gradient-optimization method used solve inverse problem extract from measured magnitude phase reflection coefficient. technique general requires only small fraction can be liquid, pulverized or solid form.
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