Determination of Microwave Conductivity of Electrolyte Solutions from Debye-Drude Model
The solvation of ions in aqueous media is a fundamental process in biology and chemistry,and the characterization of dielectric constant of aqueous electrolyte solutions at microwave frequencies composes a powerful way to understand the dynamical process in aqueous media.In this work,we have combined the classical Debye and Drude models to determine the microwave conductivity of the salt(NaCl)solution by measuring its dielectric constant.We assume the permittivity of the electrolyte solution has a compound dielectric constant model which is the sum of the Debye model contributed by the water background and the Drude model accounting for the conductive ions in the solution.As a justification of the Drude model,the damping coefficient,γ,for the conductive ions need be far greater than the angular frequency,ω.From the DC conductivity measurement,we derive the damping coefficient of the conductive ions and prove the applicability of the Drude model in our experimental microwave regime from 0.1-20 GHz.
Shuo Li Sucheng Li Shahzad Anwar Fa Tian Weixin Lu Bo Hou
School of Physical Science and Technology,Soochow University 1 Shizi Street,Suzhou 215006,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
670-673
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）