Single Whispering-Gallery-Mode Resonator With Microfluidic Chip as a Basis for Multifrequency Microwave Permittivity Measurement of Liquids

  title={Single Whispering-Gallery-Mode Resonator With Microfluidic Chip as a Basis for Multifrequency Microwave Permittivity Measurement of Liquids},
  author={Alexey I. Gubin and Irina A. Protsenko and Alexander A. Barannik and Nickolay T. Cherpak and Svetlana A. Vitusevich},
  journal={IEEE Transactions on Microwave Theory and Techniques},
The accurate measurement of complex liquid permittivity in a frequency range provides important information on liquid properties in comparison with single frequency permittivity investigations. The multifrequency microwave characterization technique based on a single quartz whispering-gallery-mode (WGM) resonator with a microfluidic chip is proposed, developed, and demonstrated. This technique allows the complex permittivity of small volumes of liquid to be measured at six resonant frequencies… 

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