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Updated: Oct 22, 2025

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
[Experimental study on temperature dependence of dielectric properties of biological tissues at 2 450 MHz]
Hongxing Liu1, Yanyan Cheng1, Meng Zhang1
1College of Life Science and Chemistry, The Faculty of Environment and Life Science, Beijing University of Technology; Intelligent Physiological Measurement and Clinical Translation, Beijing International Base for Scientific and Technological Cooperation, Beijing 100124, P.R.China.
Abstract:
The temperature dependence of relative permittivity and conductivity of ex-vivo pig liver, lung and heart at 2 450 MHz was studied. The relative permittivity and conductivity of three kinds of biological tissues were measured by the open-end coaxial line method. The dielectric model was fitted according to the principle of least square method. The results showed that the relative permittivity and conductivity of pig liver, pig lung and pig heart decreased with the increase of tissue temperature from 20 to 80 ℃. The relative permittivity and conductivity models of pig liver, pig lung and pig heart were established to reflect the law of dielectric properties of biological tissue changing with temperature and provide a reference for the parameters setting of thermal ablation temperature field.
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