Related Experiment Video
Updated: Jan 25, 2026

Method Development for Contactless Resonant Cavity Dielectric Spectroscopic Studies of Cellulosic Paper
Published on: October 4, 2019
An Open-Resonator Sensor for Measuring the Dielectric Properties of Antarctic Ice
Roberto Olmi1, Saverio Priori2, Alberto Toccafondi3
1IFAC-CNR, 50019 Sesto Fiorentino, Italy. r.olmi@ifac.cnr.it.
Abstract:
In this paper, the theory behind the design of a microwave sensor for the accurate measurement of firn complex permittivity is presented. This class of microwave sensors, based on the open-coaxial re-entrant cavity method, is specifically designed to measure, by means of a simple and quick procedure, the complex permittivity profile of low loss materials. A calibration procedure is introduced to derive the complex permittivity of the material under measurement (MUM). Two specimens of this class of microwave sensors have been realized to sample the complex permittivity profile of a 106-m long ice core drilled from the Antarctic plateau at Concordia Station. The preliminary results of the on site measurement campaign are reported, showing very good agreement with theoretical models available in the literature.
Related Concept Videos
Capacitor With A Dielectric
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Resonance
Gauss's Law in Dielectrics
Dielectric Polarization in a Capacitor
Physical and Chemical Properties of Matter
Susceptibility, Permittivity and Dielectric Constant

